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1
Kovalev, Rodion, and Andrey Nikitin. "Properties of semi-coking tar pitches." From Chemistry Towards Technology Step-By-Step 6, no. 2 (2025): 153–61. https://doi.org/10.52957/2782-1900-2025-6-2-153-161.
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This paper compares previously produced pitches derived from medium-rank coal semi-coking tars. The study considers methods for obtaining semi-coking tars in different atmospheres. We measured pitch softening temperatures and compared how these values depend on both the original coal grade and tar extraction technology. We produced pitch by extracting tar from Zh-grade coal processed in an inert atmosphere. The carbonization experiments compared semi-coking tar pitch with grade B electrode pitch.
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Frioui, Mohamed, Getnet Yimer, Mark Shamtsyan, et al. "Isolation of bioactive beta-glucans from mycelium of <i>Pleurotus ostreatus</i> mushroom." Bioactive Compounds in Health and Disease - Online ISSN: 2574-0334; Print ISSN: 2769-2426 7, no. 12 (2024): 649–58. https://doi.org/10.31989/bchd.v7i12.1511.
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Background: Beta-glucan, a compound found in higher fungi, possesses significant properties important for the human body, including immunomodulatory effects. Developing efficient extraction technology is crucial to ensure a high yield of beta-glucan component while preserving its bioactive properties. Context and purpose of this study: This study aimed to evaluate the extraction efficiency of beta-glucans from Pleurotus ostreatus mycelium powder using microwave-assisted extraction and to compare its performance with traditional extraction methods—specifically water and ethyl alcohol-based extractions. Objective: The aim of this study is to increase the yield of the aqueous extract of beta-glucan from the mycelium of the fungus Pleurotus ostreatus, while ensuring its biological activity is preserved for subsequent use in the fortifying food products. To achieve this, various extraction methods were employed. Results: Traditional methods of beta-glucan extraction, including water and ethyl alcohol-based processes, yielded the largest amount of beta-glucan of 1.45 ± 0.02 g of beta-glucan. The stimulation index, a measure of beta-glucans on the human phagocytosis system, reached 1.28 under optimal conditions — double treatment with ethanol followed by a double extraction with water, each extraction lasting three hours. When extracting beta-glucan using microwave radiation, 2.97 g of beta-glucan was obtained—2.05 times greater than traditional methods. The simulation index also improved by 13%, reaching 1.47% while reducing the extraction time. Conclusions: Based on the conducted research, it has been found that the extraction of beta-glucan from the mycelium of the Pleurotus ostreatus fungus is advisable to carry out using microwave processing, which significantly reduces the extraction time while maintaining the biological activity of beta-glucan. Keywords: Basidiomycetes, Pleurotus ostreatus, beta-glucan, water extraction, ethyl alcohol extraction, microwave radiation, immunomodulatory properties.
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Ibragimova, M. J., S. A. Seidova, S. G. Alieva, H. J. Huseynov, Kh A. Abdullaeva, and F. Yu Yusifzade. "IONIC LIQUIDS AS EXTRAGENTS OF COMPOUNDS NEGATIVELY AFFECTING THE ENVIRONMENTAL PROPERTIES OF DIESEL FUEL." Azerbaijan Chemical Journal, no. 3 (August 21, 2024): 20–28. http://dx.doi.org/10.32737/0005-2531-2024-3-20-28.
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The results of scientific research in the field of liquid-liquid extraction purification of diesel distillates differing in the content of undesirable aromatic and sulfur compounds using various ionic liquids as a selective, environmentally friendly solvent are presented. Different extracting ability of ionic liquids (dipropylammonium, dibutylammonium and N-methylpyrrolidinium acetate, morpholinium formate) in relation to the extracted components of diesel distillate is shown. In particular, a high degree of purification of the hydrotreated diesel fraction was established when using N-methylpyrrolidinium acetate ionic liquid in the extraction process. The influence of the staged process of extraction purifica-tion of mixed diesel distillate based on straight-run diesel fraction (70% vol.) and secondary oil processing products - light gas oil coking and light gas oil catalytic cracking (30% vol.) on the degree of dearomatization and desulfurization of the fuel has been determined. A relatively high yield and degree of purification of diesel fuel were revealed when carrying out the process of extraction purification of the mixed diesel distillate with N-methylpyrrolidinium acetate ionic liquid in three stages. The extraction purification process was studied using IR and UV spectral analysis methods and the possibility of purifying three- and fourcyclic aromatic hydrocarbons from the mixture of straight-run diesel fraction and secondary petroleum products was established when carrying out the extraction process with N-methylpyrrolidinium acetate ionic liquid
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Junior, Mário Roberto Maróstica, Alice Vieira Leite, and Nathalia Romanelli Vicente Dragano. "Supercritical Fluid Extraction and Stabilization of Phenolic Compounds From Natural Sources – Review (Supercritical Extraction and Stabilization of Phenolic Compounds)." Open Chemical Engineering Journal 4, no. 1 (2010): 51–60. http://dx.doi.org/10.2174/1874123101004010051.
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Phenolic compounds are components commonly found in fruits and vegetables. Recently, they have been subject of considerable scientific and therapeutic interest mainly due to their antioxidant properties and related healthpromoting benefits, as confirmed by the numerous papers devoted to various properties of these compounds. Thus, the extractions of phenolic compounds with functional properties from natural sources have attracted special interests. Supercritical fluid extraction offers a number of advantages over conventional extraction methods above all in relation to the conditions employed during the extraction process that ensures minimal alteration of the active phenolics and the healing properties could be more easily preserved. This work provides an updated overview on the principal applications of Supercritical fluid extraction in recovery of bioactive phenolics emphasizing the effects of temperature, pressure, addition of co-solvents and time on the extraction yield of these compounds and their antioxidant activities for a possible applications in food, cosmetic or pharmaceutical industries.
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Alwi, Habsah, Ku Halim Ku Hamid, Nadira Ikhsan, Suhaiza Hanim Hanipah, and Hanafiah Zainal Abidin. "Extraction of Antipyretic Properties from Planted AquilariaSubintegra Spp. Dried Leaves." International Journal of Chemical Engineering and Applications 7, no. 5 (2016): 319–22. http://dx.doi.org/10.18178/ijcea.2016.7.5.597.
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Obeid, Mohammed T., Waleed A. Hussain, and Wisam A. Radhi. "Linear Optical properties of Pheomelanine pigment extraction from red wool." Journal of Zankoy Sulaimani - Part A 17, no. 1 (2015): 177–84. http://dx.doi.org/10.17656/jzs.10371.
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Kozhevnikova, Arina V., Ekaterina S. Uvarova, Varvara E. Maltseva, et al. "Design of Eutectic Solvents with Specified Extraction Properties Based on Intermolecular Interaction Energy." Molecules 29, no. 21 (2024): 5022. http://dx.doi.org/10.3390/molecules29215022.
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A new approach to managing the extraction properties of eutectic solvents based on aliphatic alcohols is proposed. Aliphatic alcohols, when functioning as hydrogen bond donors within a eutectic solvent, significantly enhance the solvent’s efficiency in extracting metal ions. Conversely, when the alcohol acts as a hydrogen bond acceptor, its extraction properties diminish. Molecular modelling reveals that the extraction efficiency of these alcohols is directly proportional to the intermolecular interaction energy between the components of the eutectic solvent.
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Wróblewska, Agnieszka, Katarzyna Janda, Edyta Makuch, Marika Walasek, Piotr Miądlicki, and Karolina Jakubczyk. "Effect of extraction method on the antioxidative activity of ground elder (Aegopodium podagraria L.)." Polish Journal of Chemical Technology 21, no. 3 (2019): 13–18. http://dx.doi.org/10.2478/pjct-2019-0024.
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Abstract In this work the studies on the antioxidative properties of extracts from various morphotic parts of the ground elder (leaves, rhizomes, seeds and flowers) were presented. Moreover, the effect of different extraction methods (ultrasonic assisted extractions, extraction in a Soxhlet apparatus, extraction at the boiling point of the solvent used), solvent and its amount, and extraction time on the antioxidative properties of the obtained extracts were tested. The studies showed that all parts of ground elder can show radical scavenging activity, and it depends mainly on the method of extraction and extraction time. But the most beneficial is ultrasonic assisted extraction which used lower amount of solvent (ethanol). In case of all parts of the ground elder (leaves, rhizomes, seeds and flowers) it allows to obtain very high values of the antioxidant capacity (above 90%) for very short extraction time amounted to 20–40 minutes.
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Melnykov, Andrii, Denis Miroshnichenko, Pavlo P. Karnozhytskyi, and Pavlo V. Karnozhytskyi. "Sorption Properties of Brown Coal Processing Product." Chemistry & Chemical Technology 18, no. 4 (2024): 493–501. https://doi.org/10.23939/chcht18.04.493.
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The paper is devoted to the study of the sorption properties of residual coal formed after hydrocavitation treatment of brown coal of the Olexandria deposit. The study aims to investigate the possibility of more efficient usage of brown coal processing products that have undergone cavitation treatment. Hydrocavitation of earthy brown coal provides complete and fast extraction of humus acids during extraction with the sodium hydroxide solution. At the same time, the residual coal is pulverized to the size of 10-20 µm. It was shown that the residual carbon has a high sorption capacity (the degree of extraction of methylene blue from the solution is more than 95%).
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Sun, Li-Hui, Feng Yu, Yu-Ying Wang, Shi-Wen Lv, and Lei-Yu He. "Effects of ultrasound extraction on the physicochemical and emulsifying properties of rice bran protein." International Journal of Food Engineering 17, no. 5 (2021): 327–35. http://dx.doi.org/10.1515/ijfe-2019-0115.
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Abstract In this study, rice bran protein was prepared by ultrasound-assisted extraction, and its physicochemical and emulsifying properties were also evaluated. Results demonstrated that a significant increase in protein yield was observed when ultrasound-assisted method was employed for extracting protein. Noticeably, obtained rice bran protein possessed excellent physicochemical properties, such as oil absorption capacity, protein solubility and foaming property. More hydrophobic groups were exposed in the process of ultrasound-assisted extraction, which led to the increase of surface hydrophobicity. More importantly, the ultrasound-assisted extraction could improve emulsifying properties of rice bran protein, and the emulsions prepared using protein samples exhibited the great stability. Besides, it was also found that emulsifying properties of protein samples presented a decrease trend with increasing ultrasound power and time. All in all, ultrasound-assisted extraction is a suitable alternative process for preparing rice bran protein.
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Gao, D. L., Ya Fei Guo, Xiao Ping Yu, Shi Qiang Wang, and Tian Long Deng. "Ionic Liquid Extraction Methods for Alkali and Alkaline Earth Metal Ions." Advanced Materials Research 791-793 (September 2013): 224–27. http://dx.doi.org/10.4028/www.scientific.net/amr.791-793.224.
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Ionic liquids (ILs) have been considered as successful alternative extraction solvents, especially, they have become potential replacements of volatile organic compound in the extraction of metal ions for the properties of negligible vapor pressure, nonflammability, high thermostability, etc. In this paper, ILs as environmental friendly solvents in liquid-liquid extractions of alkali and alkaline earth metal ions were summarized, the part of extraction phase compositions, extraction conditions and back extraction method were discussed, and the potency of applications of ILs in extraction and separation of metal ions were also commented.
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Auvinen, J., J. E. Bernhard, and S. A. Bass. "Systematic Extraction of QGP Properties." Acta Physica Polonica B Proceedings Supplement 10, no. 3 (2017): 455. http://dx.doi.org/10.5506/aphyspolbsupp.10.455.
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Kozin, V. G., and A. V. Sharifullin. "Extraction properties of mixed solvents." Chemistry and Technology of Fuels and Oils 33, no. 2 (1997): 104–6. http://dx.doi.org/10.1007/bf02767007.
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Bayadilova, A., G. Abdilova, K. Bekbayev, A. Toleugazykyzy, and Sh Amirkhanov. "METHODS OF EXTRACTION OF VALUABLE COMPONENTS FROM GRAPE POMACE." Bulletin of Shakarim University. Technical Sciences, no. 2(18) (July 8, 2025): 177–85. https://doi.org/10.53360/2788-7995-2025-2(18)-21.
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This article discusses various methods of extracting valuable components from grape pomace, a byproduct of winemaking. Special attention is given to the effectiveness of traditional and innovative extraction methods, including solvent extraction, as well as new technologies such as solid-liquid extraction, supercritical fluid extraction, ultrasound-assisted extraction, accelerated solvent extraction, and pressurized liquid extraction. For example, supercritical fluid extraction is a relatively new technique for extracting target analytes from solid matrices. Ultrasound-Assisted Extraction is based on the phenomenon of cavitation, where pressure ultrasound waves propagate, and the transfer of extractants is enhanced by high shear forces. Pressurized Liquid Extraction involves using 100% water as the solvent. The research results confirm the high potential of using grape pomace as a raw material for obtaining functional products with antioxidant and anti-inflammatory properties. The process of extracting bioactive compounds, such as polyphenols, proteins, lignin, pectins, and oils, from food waste and by-products of winemaking is becoming an important alternative strategy. The most promising, efficient, sustainable, and environmentally friendly methods are supercritical extraction and ultrasound-assisted extraction.
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Beata Łabowska, Magdalena, Izabela Michalak, and Jerzy Detyna. "Methods of extraction, physicochemical properties of alginates and their applications in biomedical field – a review." Open Chemistry 17, no. 1 (2019): 738–62. http://dx.doi.org/10.1515/chem-2019-0077.
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AbstractIn this paper, the current state-of-art of extraction of alginates and the determination of their physico-chemical properties as well as their overall applications focussing on biomedical purposes has been presented. The quality and quantity of the alginate obtained with a variable yield prepared from brown seaweeds as a result of many factors, such as type of algae, extraction methods, chemical modification and others. Alginates are mainly extracted by using conventional alkaline extraction. However, novel extraction techniques such as microwave and ultrasound assisted extractions have gained a lot of interest. The extraction parameters (e.g., temperature and time of extraction) have critical impact on the alginate physiochemical and mechanical properties and thus, their potential applications. By controlling a chemical process makes it possible get various forms of alginates, such as fibres, films, hydrogels or foams. It is important to characterise the obtained alginates in order to their proper applications. This article presents several techniques used for the analysis of alginate properties. These natural polysaccharides are widely used in the commercial production, as a food ingredient, in the pharmaceutical industry due to their antibacterial, anticancer and probiotic properties. Their gelling characteristic and absorbable properties enable using alginates as a wound management material. Moreover, they are also biocompatible, non-toxic and biodegradable, therefore adequate in other biomedical applications.
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Getachew, Bezuayehu, Kemal Ahmed, Mahmud Endris, et al. "Determination of Oil Content and Physicochemical Properties of Oil Extracted from Niger Seed Oil Grown in Gamo Gofa, Southern Ethiopia." International Letters of Chemistry, Physics and Astronomy 63 (January 2016): 141–44. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.63.141.
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The Niger seed oil was collected from gamo-gofa, southern part of Ethiopia for oil extraction. The collected seed were oven dried and crushed in to powder by mortar and pestle. A soxhlet and maceration extractions were used for extraction of the oil. The solvents used for both extractions were n-hexane and ethyl acetate. The main reason two different types of solvents and two different type of extraction methods used in this project were to check which type of solvent and extraction method were effective for extraction of oil from Niger seed. From both extraction methods the extracted oil was separated from the solvents by simple distillation. The oil content and the physico-chemical parameters of the oil were determined and an oil content of 23.45% and 21.35% were obtained by maceration and 33.02% and 22.7% by soxhlet extraction method from n-hexane and ethyl acetate respectively. The physico-chemical parameters of the seed and oil were determined and the result shows that moisture content of the seed was (8.3%) and acid value of the oil (1.7391), saponification value (6.0308), Kinematic viscosity (0.561 m2/s), Density of oil (0.9788 g/ml) and Specific gravity of (0.9947). From the result obtained we conclude that n-hexane is an effective solvent and soxhlet extraction is an effective extraction method for extraction of oil from Niger seed.
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Likittrakulwong, Wirot, Pisit Poolprasert, and Khongsak Srikaeo. "Effects of extraction methods on protein properties obtained from paddy rice and germinated paddy rice." PeerJ 9 (May 4, 2021): e11365. http://dx.doi.org/10.7717/peerj.11365.
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Rice protein has attracted considerable attention recently due to its physiological effects. This study extracted the proteins from paddy rice (PR) and germinated paddy rice (GPR) using three methods i.e., alkaline, sodium dodecyl sulfate (SDS) reagent and enzymatic extractions. The extracted proteins or protein fractions were assessed for their properties using various techniques. Data were analyzed by 2′3 factorial design experiment. It was found that germination and extraction methods significantly affected the concentration of protein fractions when analyzed by Bradford assay. Average protein fraction concentration of the GPR was lower than that of PR. SDS-PAGE patterns of protein fractions obtained from PR and GPR using any extraction method displayed similar protein profiles. Three major protein bands at about 13 kDa (prolamin), 22–23 kDa (basic glutelin) and 37–39 kDa (acidic glutelin) with small amount of 57 kDa proglutelin were observed. For amino acid profile, germination increased the content of most amino acids, resulting in the higher content of amino acids in GPR, excepted for some amino acids. When processed with in vitro digestion, protein fractions from GPR exhibited a higher level of digestibility than those from PR as evidenced by the less intensity of the protein bands obtained from SDS-PAGE. Alkaline and SDS reagent extractions provided more digestible protein fractions than enzymatic extraction. Extraction methods also influenced phase transition of protein fractions as investigated by a DSC. Alkaline extraction resulted in protein fractions with higher phase transition temperature than the other methods. For antioxidant capacity, extraction methods as well as germination significantly affected antioxidant capacity of the protein fractions. Enzymatic extraction provided protein fractions with the best antioxidant capacity.
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Leccese, Annamaria, Raffaella Viti, and Susanna Bartolini. "The effect of solvent extraction on antioxidant properties of apricot fruit." Open Life Sciences 6, no. 2 (2011): 199–204. http://dx.doi.org/10.2478/s11535-010-0113-2.
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AbstractTwo solvent extraction procedures were used to investigate the extraction efficiency in terms of total antioxidant capacity and total phenols in apricot fruit. Samples were either sequentially extracted with aqueous ethanol (ethanol/water 80% v/v) and tetrahydrofuran or directly extracted with tetrahydrofuran. Each extract was analyzed for total antioxidant capacity by the Trolox Equivalent Antioxidant Capacity (TEAC) assay and total phenols by the Folin-Ciocalteu assay. The results showed that using sequential solvent extraction, the majority (85%) of the total antioxidant capacity and total phenols was due to hydrophilic compounds. In tetrahydrofuran direct extractions, the total antioxidant capacity and total phenols were higher than values obtained with aqueous ethanol and the sum of results obtained from sequential extracts for either total antioxidant capacity or total phenols was similar to the tetrahydrofuran-extract antioxidant values. A linear correlation between total antioxidant capacity and total phenols was found and was independent of the solvent extraction method. In conclusion, the choice of solvent is related to the antioxidant potential of fruit and depends on the food hydrophilic/lipophilic composition.
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Dulanlebit, Yeanchon Henry, and Hernani Hernani. "Overview of Extraction Methods for Extracting Seaweed and its Applications." Jurnal Penelitian Pendidikan IPA 9, no. 2 (2023): 817–24. http://dx.doi.org/10.29303/jppipa.v9i2.3053.
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Seaweed is a carbohydrate polymer of alginate, agar, and carrageenan which can be extracted and purified as hydrocolloids. Each carbohydrate has different physicochemical properties and hydrocolloids can form gels when dispersed in water. To achieve targeted hydrocolloids according to specific purposes and functions, conventional extraction methods, and several green extraction methods for extracting seaweed have been proposed and discussed. The conventional extraction method is in the form of solvent extraction (SLE), while the green extraction includes: microwave-assisted extraction (MAE), ultrasound-assisted extraction (UAE), supercritical fluid extraction (SFE), pressurized solvent extraction (PSE), and reactive extrusion which automatically selectively presented as a promising method for extracting hydrocolloids in seaweed. These methods have been applied by taking into account the recovery rate, time, volume, temperature, pH, ratio, and type of solvent, as well as the type of method. This study discusses extraction methods that can extract bioactive compounds from seaweed with high yields and are economical and environmentally friendly
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Öncü Glaue, Şelale, Tolga Akcan, and Şebnem Tavman. "Thermal Properties of Ultrasound-Extracted Okra Mucilage." Applied Sciences 13, no. 11 (2023): 6762. http://dx.doi.org/10.3390/app13116762.
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Utilizing chemical and physicochemical techniques, the mucilage part of okra was extracted with the use of ultrasound, and the polysaccharide extract’s structural and thermal characteristics were assessed. Analysis of the extraction yield revealed that there was no discernible impact of time and that the yield increased with a decreasing okra to distilled water ratio (mean 8%). Differential scanning calorimetry was employed to determine the phase change enthalpy by examining the glass transition temperature and enthalpy. The glass transition temperatures of the samples were found to be about 50 °C and the melting temperatures were in the range of 166–170 °C for varied solid/solvent ratios (1:10, 1:25, 1:30, and 1:50) and extraction durations of 5 and 30 min. Using thermogravimetry (TG) and differential thermogravimetry (DTG) techniques, it was discovered that the okra polysaccharides were thermally stable with considerable weight loss above 240 °C. For the purpose of illuminating the bonds of the polysaccharides, FTIR analysis was used to characterize the polysaccharides obtained by the varying extraction times and rates of solid/solvent. This analysis provides detailed information about the composition of the extracts. It was found that the molecular structure of the mucilage from okra was unaffected by the varying ratios and times. The study’s findings indicated that the use of ultrasound could be a promising approach for extracting polysaccharides that possess strong thermal stability, making them suitable for use in various industrial applications. The study noted that variations in ultrasound application time and solid/solvent ratios did not appear to impact the thermal stability of the extracted polysaccharides. The important parameters for the extraction conditions such as the time and low amount of sample used are preferred for applications. The findings obtained indicate that ultrasonic extraction application at a 1/50 solid/solvent ratio for 5 min is statistically significant in terms of thermal properties and yield. These findings could have important implications for the energy costs associated with the industrial use of ultrasound extraction.
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Theeraraksakul, Kanyanat, Kittitat Jaengwang, Kiattawee Choowongkomon, and Lueacha Tabtimmai. "Exploring the Biological Functions and Anti-Melanogenesis of Phallus indusiatus for Mushroom-Based Cosmetic Applications." Cosmetics 10, no. 5 (2023): 121. http://dx.doi.org/10.3390/cosmetics10050121.
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Phallus indusiatus, or bamboo mushroom, has been reported for its nutraceutical properties, while its cosmeceutical properties remain unclear. In this study, we conducted extractions of whole, fresh P. indusiatus using both aqueous and ethanolic methods. Among the extracts, ultrasonic-assisted extraction method with DI showed the highest antioxidant activity compared to the others. For cosmeceutical assessment, we evaluated the extracts’ inhibitory effects against ECM-degrading enzymes and found that they exhibited a modest inhibitory effect of approximately 50%. Remarkably, ultrasonic-assisted extraction with DI demonstrated promising cosmeceutical properties. Additionally, pressure-assisted extraction with DI showed a potentially protective effect against H2O2-induced DNA damage. To investigate the anti-melanogenic effect on MNT-1 cells, we treated them with the extracts and observed a significant decrease in cellular tyrosinase activity under α-MSH stimulation. This resulted in a relative reduction in melanin content. Notably, autoclaving extraction exhibited a significantly greater anti-melanogenic effect than the other extracts at the lowest concentration tested. Furthermore, the extracts demonstrated a reduction in NO production under LPS-induced inflammation. Hot water extraction with DI and ethanol exhibited a stronger anti-inflammatory effect compared to diclofenac, without any cytotoxicity. These findings highlight the hidden cosmeceutical properties of P. indusiatus and suggest its potential use as a bioactive ingredient in cosmetic formulations.
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Wang, Mingming, Chuangchuang Zhang, Yuting Xu, Mengting Ma, Tianming Yao, and Zhongquan Sui. "Impact of Six Extraction Methods on Molecular Composition and Antioxidant Activity of Polysaccharides from Young Hulless Barley Leaves." Foods 12, no. 18 (2023): 3381. http://dx.doi.org/10.3390/foods12183381.
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Young hulless barley leaves are gaining recognition for potential health benefits, and the method of extracting polysaccharides from them is critical for potential food industry applications. This study delves into a comparative analysis of six distinct fiber extraction techniques: hot water extraction; high-pressure steam extraction; alkaline extraction; xylanase extraction; cellulase extraction; and combined xylanase and cellulase extraction. This analysis included a thorough comparison of polysaccharide–monosaccharide composition, structural properties, antioxidant activities (DPPH, ABTS, and FRAP), and rheological properties among fibers extracted using these methods. The results underscore that the combined enzymatic extraction method yielded the highest extraction yield (22.63%), while the rest of the methods yielded reasonable yields (~20%), except for hot water extraction (4.11%). Monosaccharide composition exhibited divergence across methods; alkaline extraction yielded a high abundance of xylose residues, whereas the three enzymatic methods demonstrated elevated galactose components. The extracted crude polysaccharides exhibited relatively low molecular weights, ranging from 5.919 × 104 Da to 3.773 × 105 Da across different extraction methods. Regarding antioxidant activities, alkaline extraction yielded the highest value in the ABTS assay, whereas enzymatically extracted polysaccharides, despite higher yield, demonstrated lower antioxidant capacity. In addition, enzymatically extracted polysaccharides exerted stronger shear thinning behavior and higher initial viscosity.
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Nguyen, K.H. Nguyen. "Black Bean: Composition, Protein Extraction and Functional Properties." INTERNATIONAL JOURNAL OF MULTIDISCIPLINARY RESEARCH AND ANALYSIS 06, no. 08 (2023): 3717–22. https://doi.org/10.5281/zenodo.8277306.
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Black beans play an essential part in the human diet due to their high protein content and nutritional value. Black beans are high in energy, dietary fiber, protein, minerals, and vitamins, and they have well-balanced essential amino acid profiles. The production of black bean protein concentrates or isolates is of growing interest to food industry because of their functional properties and ability to improve the nutritional quality of food products. Various procedures are used to obtain protein concentrates / isolates with varying properties. Because of desired functional features such as gelling and emulsifying properties, black bean proteins have grown in popularity and could be presented as a potential supplement in a wide range of food applications. This review provides an overview of the chemical composition of black bean, current and emerging techniques for producing their protein concentrates / isolates, and major functional properties.
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Getachew, Bezuayehu, Kemal Ahmed, Mahmud Endris, et al. "<i></i>Determination of Oil Content and Physicochemical Properties of Oil Extracted from Niger Seed Oil Grown in Gamo Gofa, Southern Ethiopia." International Letters of Chemistry, Physics and Astronomy 63 (January 4, 2016): 141–44. http://dx.doi.org/10.56431/p-86byam.
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The Niger seed oil was collected from gamo-gofa, southern part of Ethiopia for oil extraction. The collected seed were oven dried and crushed in to powder by mortar and pestle. A soxhlet and maceration extractions were used for extraction of the oil. The solvents used for both extractions were n-hexane and ethyl acetate. The main reason two different types of solvents and two different type of extraction methods used in this project were to check which type of solvent and extraction method were effective for extraction of oil from Niger seed. From both extraction methods the extracted oil was separated from the solvents by simple distillation. The oil content and the physico-chemical parameters of the oil were determined and an oil content of 23.45% and 21.35% were obtained by maceration and 33.02% and 22.7% by soxhlet extraction method from n-hexane and ethyl acetate respectively. The physico-chemical parameters of the seed and oil were determined and the result shows that moisture content of the seed was (8.3%) and acid value of the oil (1.7391), saponification value (6.0308), Kinematic viscosity (0.561 m2/s), Density of oil (0.9788 g/ml) and Specific gravity of (0.9947). From the result obtained we conclude that n-hexane is an effective solvent and soxhlet extraction is an effective extraction method for extraction of oil from Niger seed.
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Rostaman, Tia, L. Anggria, and A. Kasno. "CALIBRATION OF SOIL NUTRIENT MEASUREMENTS WITH MULTIPLE EXTRACTIONS USING INDUCTIVELY COUPLED PLASMA (ICP)." Agric 34, no. 2 (2022): 183–96. http://dx.doi.org/10.24246/agric.2022.v34.i2.p183-196.
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Inductively Coupled Plasma (ICP) instrument is a tool used to measure nutrients in the soil, plants, fertilizers, and water, good measurement requires a specific extraction. This study was conducted from March to November 2013 at the Soil Testing and Research Laboratory, Indonesian Soil Research Institute. The soils were collected from the Banten, West Java, and Central Java. The experiment was carried out by the statistical method of two means. The soil used was 100 g of wind-dried soil, which was analyzed by extracting Morgan Venema, Wet Ashing HNO3 and HClO4, Morgan Wolf. The observation was made on the chemical properties of the soil with various concentrations and several extracts. The best extraction was determined based on the value of R2 and the significance of the regression equation between the results of soil analysis of several extractions with the percent yield and nutrient uptake as measured by ICP and AAS tools. The experimental results showed that the ICP-OES and AAS tools could be used with some extractions. This was indicated by the significant regression coefficient data on various extraction. The parameters K, Ca, Mg, Fe, Mn, Cu, and Zn were obtained in the HNO3 and HClO4 extraction, which could be said to be the best extractions used in ICP and AAS equipment. Morgan Wolf extract obtained insignificant results on Cu measurements. This showed that the Cu parameters in the Morgan Wolf extract were not suitable for analysis with ICP.
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Yuvanatemiya, Vasin, Pao Srean, Wiyada Kwanhian Klangbud, et al. "A Review of the Influence of Various Extraction Techniques and the Biological Effects of the Xanthones from Mangosteen (Garcinia mangostana L.) Pericarps." Molecules 27, no. 24 (2022): 8775. http://dx.doi.org/10.3390/molecules27248775.
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Xanthones are significant bioactive compounds and secondary metabolites in mangosteen pericarps. A xanthone is a phenolic compound and versatile scaffold that consists of a tricyclic xanthene-9-one structure. A xanthone may exist in glycosides, aglycones, monomers or polymers. It is well known that xanthones possess a multitude of beneficial properties, including antioxidant activity, anti-inflammatory activity, and antimicrobial properties. Additionally, xanthones can be used as raw material and/or an ingredient in many food, pharmaceutical, and cosmetic applications. Although xanthones can be used in various therapeutic and functional applications, their properties and stability are determined by their extraction procedures. Extracting high-quality xanthones from mangosteen with effective therapeutic effects could be challenging if the extraction method is insufficient. Although several extraction processes are in use today, their efficiency has not yet been rigorously evaluated. Therefore, selecting an appropriate extraction procedure is imperative to recover substantial yields of xanthones with enhanced functionality from mangosteens. Hence, the present review will assist in establishing a precise scenario for finding the most appropriate extraction method for xanthones from mangosteen pericarp by critically analyzing various conventional and unconventional extraction methods and their ability to preserve the stability and biological effects of xanthones.
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Kulkarni, Aloknath A., Prachi P. Gujar, Ashok A. Hajare, and Chandrakant S. Magdum. "Development and Optimization of Advanced Microwave assisted extraction for Cucurbita pepo oil: A Phytochemical and Physico-chemical screening perspectiv." Journal of Ayurvedic and Herbal Medicine 3, no. 2 (2017): 78–82. http://dx.doi.org/10.31254/jahm.2017.3205.
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The objective of this study is to optimize the operational conditions of the microwave-assisted extraction (MWE) of seeds of Cucurbita pepo (C. pepo) and phytochemical, physicochemical screening of extract (fixed oil) which is responsible for the medicinal properties of the plant. Optimal conditions for microwave extractions proposed were 700 Watt microwave power, 70 ml solvent volume and 10 min extraction time. Total 14.57% extract was yielded using microwave assisted extraction method compared to 8.1% by traditional Soxhlet extraction method. The solvent selection was based on the extraction values. Extracted oil was subjected to characterization by using thin layer chromatography, phyto-chemical and physicochemical screening. The microwave assisted extraction was more advantageous, effective and economical to that of traditional extraction method.
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Gbashi, M. Samuel, T. Emmauel Yanshio, and N. Nwankwo Kingsley. "Effect of Oil Extraction Method on the Functional Properties of Biodiesels of Selected Oilseeds." International Journal of Trend in Scientific Research and Development 3, no. 6 (2019): 393–97. https://doi.org/10.5281/zenodo.3587905.
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Owing to the rise in demand for petroleum and environmental concerns, the search for alternative fuels has gained prominence. This study examined the effect of the method of extraction of the base oil on the functional properties of biodiesel produced from Jatropha, Yellow oleander and Castor oilseeds. The study revealed that the method of extraction had significant effect on the properties of the oil extracted and hence the biodiesel produced from the oil. Hydrogenation during oven heating after solvent extraction affected the unsaturation of the base oils and the biodiesels produced from them. The kinematic viscosities of the biodiesel samples obtained from the oil samples extracted by solvent extraction were generally higher than those obtained from the oil samples extracted by mechanical extraction. The flash and fire points of the biodiesel samples obtained from the oil samples extracted by solvent extraction were higher than that obtained from the oil samples extracted by mechanical extraction. The pour points of the biodiesels produced from the oils extracted by mechanical extraction were lower than those produced from the oils extracted by solvent extraction. Gbashi M. Samuel | Yanshio T. Emmauel | Kingsley N. Nwankwo "Effect of Oil Extraction Method on the Functional Properties of Biodiesels of Selected Oilseeds" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-6 , October 2019, URL: https://www.ijtsrd.com/papers/ijtsrd25252.pdf
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Lu, Zhao, Ho, Ma, Xie, and Chen. "Biorefining and the Functional Properties of Proteins from Lipid and Pigment Extract Residue of Chlorella pyrenoidosa." Marine Drugs 17, no. 8 (2019): 454. http://dx.doi.org/10.3390/md17080454.
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Microalgae are considered as excellent candidates for bioactive compounds, yet microalgal residues remaining after the extraction of one or two compounds are usually discarded, which is not economical. This study demonstrates the alkaline extraction of proteins from Chlorella pyrenoidosa residue after lipid and pigment extractions, and their functional properties. Single-factor experiments and response surface methodology were used to obtain the optimal conditions for protein extraction. Based on our results, a maximum protein yield of 722.70 mg/g, was obtained under the following extraction conditions: sodium hydroxide concentration 7.90%, extraction temperature 70.00 °C, extraction time 34.80 min, and microalgal residue concentration 8.20 mg/mL. The molecular weight of microalgal residue protein isolate (MRPI) was mainly distributed at the regions of 0.18–0.50 kDa, 0.50–1.50 kDa, and 1.50–5.00 kDa. The essential amino acid content was greater than the values recommended by FAO/WHO standards; a high essential amino acid index value (1.49) was another good indication that MRPI is suitable for human consumption. Moreover, MRPI exhibited excellent emulsifying properties and antioxidant activity, which suggests it may be useful as an emulsifying agent and antioxidant. These findings could improve the extraction methods of functional protein from microalgal residue and add value to microalgae-based bioactive compound production processes.
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Long, Xiaoyan, Quan Yan, Linwei Peng, Xinyue Liu, and Xuegang Luo. "Effect of Various Temperatures on Bletillae Rhizoma Polysaccharide Extraction and Physicochemical Properties." Applied Sciences 9, no. 1 (2018): 116. http://dx.doi.org/10.3390/app9010116.
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Six fractional polysaccharides were prepared by water extraction and alcohol precipitation under controlled temperature from bletillae rhizoma, a traditional Chinese medicine. Based on this, yields of bletillae rhizome polysaccharides (RBPs) were obtained. The extracting temperature impacted the characteristics of the fractional polysaccharides. The fractional polysaccharides were characterized by glucomannan (GM) content, thermal stability, scanning electron microscopy (SEM), Fourier-transform infrared (FTIR) spectroscopy, gel permeation chromatography (GPC), and x-ray diffraction (XRD). For the analysis, 2.0% w/v dispersions of the six fractional polysaccharides were prepared and their flow behaviors were evaluated using a rotational rheometer. The results showed that increased extraction temperature led to increased GM extraction yields and extraction rate, but GM content was relative stable (over 90%). The average molecular weight (Mw) of fractional polysaccharides obtained at 30, 40, 50, 60, 70, and 80 °C was 3.598 × 104, 4.188 × 104, 8.632 × 104, 8.850 × 104, 2.372 × 105, and 3.081 × 105 g/mol, respectively. SEM revealed that fractional polysaccharides had a porous structure of different sizes and densities. Thermal analysis, FTIR, and XRD results indicated that extraction temperature affects the structure and moisture content of fractional polysaccharides. All results showed that the extraction temperature has an obvious impact on the morphology, molecular weight, and polydispersity of the RBPs. This simple process is a promising method for the preparation of fractional polysaccharides.
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Kennedy Neth, Nicole L., and Olya S. Keen. "Using size-exclusion for improved extraction of trace organic compounds from landfill leachate." Waste Management & Research: The Journal for a Sustainable Circular Economy 37, no. 6 (2019): 651–55. http://dx.doi.org/10.1177/0734242x19842929.
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Pharmaceuticals, plasticisers and other trace organic contaminants have been reported in landfill leachates, with most methods using hydrophilic–lipophilic balance cartridges for solid phase extraction. However, leachate has a high organic load and can quickly coat the cartridge media and prevent target compounds from being extracted. There are several solid phase extraction cartridges that offer size exclusion in addition to adsorption, where only small molecules are allowed to diffuse into the resin pores where adsorption in happening. Three cartridges with size exclusion properties were evaluated in comparison with hydrophilic–lipophilic balance cartridges for extraction of several trace organic contaminants spiked into landfill leachate. All three cartridges with size exclusion properties showed some improvement in extraction compared with hydrophilic–lipophilic balance, although the differences were not statistically significant at 95% confidence interval. Nevertheless, media with size-exclusion properties offers a viable alternative to hydrophilic–lipophilic balance for extracting small molecules of trace organics from complex environmental matrices.
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Drużyńska, Beata, Jakub Łukasiewicz, Ewa Majewska, and Rafał Wołosiak. "Optimization of the Extraction Conditions of Polyphenols from Red Clover (Trifolium pratense L.) Flowers and Evaluation of the Antiradical Activity of the Resulting Extracts." Antioxidants 13, no. 4 (2024): 414. http://dx.doi.org/10.3390/antiox13040414.
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The purpose of this study was to analyze the effect of the type of extraction solution (water, different concentrations of ethanol), temperature and time on the polyphenol content and antioxidant properties of red clover extracts and the effect of the addition of selected extracts on the antioxidant properties of enriched blackcurrant beverages. In both the extractions carried out under different conditions and in the enriched beverages, the content of selected polyphenols was determined by HPLC. This study confirmed the significant effect of the alcohol content of the extract, extraction time and temperature on the antioxidant properties of clover extracts. Ethanolic extracts had better antioxidant properties than aqueous extracts. The addition of ethanol extracts had a significant effect on the antioxidant properties of the fortified beverages. Increasing the temperature, time or ethanol content in the extracts mostly resulted in an increase in the total polyphenol content in the obtained extracts. Based on the analysis of the response surface, it was found that for the DPPH radical, the best activity was obtained by extraction for 20 min with a solution of approximately 65% at low temperatures. In the case of the ABTS radical, the best antiradical activity was obtained after extraction for 60 min at 80 °C with a solution of approximately 50% ethanol. It was also found that the use of a solution of approximately 60% ethanol after extraction for 60 min at 80 °C would provide an extract with high antiradical activity against both radicals.
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Dewi, Swastika, Wiwid Rizqi Maryati, Oktavia Winda Dewi, Agung Dewantoro Mulyono, and Yoga Pratama. "Valorizing Waste: The Effects of Ultrasonic Extraction Time on Jackfruit Rind Pectin Properties." IOP Conference Series: Earth and Environmental Science 1460, no. 1 (2025): 012050. https://doi.org/10.1088/1755-1315/1460/1/012050.
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Abstract The waste from jackfruit (Artocarpus heterophyllus) processing is estimated between 65-80% from the total weight, in which, about 30% comes from the rind. Pectin, a natural biopolymer and widely used gelling agent, has been the focus of several jackfruit rind valorization studies. The current work aims to evaluate if ultrasonic treatment is effective in improving the jackfruit rind pectin extraction, both in yield and its physical-chemical properties. Ultrasonic-assisted extractions (40 kHz) were carried out with time variables of 20 to 35 minutes. The yield increases significantly with the increasing extraction time, with the range of 7.84 - 11.02%; moisture content 10.04-10.1%; equivalent weight 333.55-656.02; methoxyl content 1.34-5.65; and viscosity 5.08-12.76 cP. Extraction time treatments showed significant differences (p ≤ 0.05) to yield, equivalent weight, methoxyl content, and viscosity but not to moisture content (p ≥0.05). According to SEM data, ultrasound caused observable alterations in the pectin’s microstructure. The best pectin was obtained by 20 minutes extraction time according to the best yield and less impurities.
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Hamdi, Amel, Miguel Angel Córdoba-Rojano, Jose Manuel Monje-Moreno, et al. "Harnessing the Potential of Walnut Leaves from Nerpio: Unveiling Extraction Techniques and Bioactivity Through Caenorhabditis elegans Studies." Foods 14, no. 6 (2025): 1048. https://doi.org/10.3390/foods14061048.
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This study used Juglans regia leaves from the Gran Jefe variety; this indigenous cultivar from Nerpio is highly valued for its quality and distinct characteristics. This type of walnut is traditionally cultivated in the region and is noted for its organoleptic properties and adaptation to local climatic conditions. Two solvents were tested to determine the optimal extraction conditions for phenolic compounds: 80% ethanol and water. Direct homogenization with an Ultra-Turrax, direct ultrasound, and indirect ultrasound treatments were compared for ethanol extraction. Water extractions were conducted using direct and indirect ultrasound, infusion, and decoction. Compared to water extraction, 80% ethanol proved to be more efficient. Extracting phenolic compounds from ’Gran Jefe’ walnut leaves was most effective when using direct extraction methods without either ultrasound assistance or indirect ultrasound treatment. The main compounds identified were trans-3-caffeoylquinic acid and quercetin-3-hexoside isomer 1. The ethanolic extract obtained through direct extraction was selected to study further the bioactivities of ’Gran Jefe’ walnut leaves using C. elegans as an in vivo model. Results indicated that the leaf extract enhanced thermal and oxidative stress resistance, promoted fertility, and exhibited neuroprotective effects in models of Alzheimer’s and Parkinson’s diseases. The observed bioactivities were attributed to the free phenolics present in the ethanolic extract.
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Mileti, Olga, Noemi Baldino, Francesco Filice, Francesca R. Lupi, Maria Stefania Sinicropi, and Domenico Gabriele. "Formulation Study on Edible Film from Waste Grape and Red Cabbage." Foods 12, no. 14 (2023): 2804. http://dx.doi.org/10.3390/foods12142804.
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(1) Background: Recent research on the valorization of agro-industrial waste has attempted to obtain new products. Grape residue is a waste product used in the grape wine industry that is rich in anthocyanins, as well as leaves and waste parts from red cabbage processing. Anthocyanins, thanks to their various functionalities, can be recovered and used as active and intelligent agents in food packaging. Anthocyanins have antioxidant properties that help to prevent cardiovascular disease. (2) Methods: In this study, the process of extracting waste was studied using solvent and supercritical CO2 extraction. The obtained anthocyanins were used in starch-based food film formulations. Several formulations were studied using rheometric techniques and the effect of adding anthocyanins on optimal film formulation was investigated. (3) Results: Solvent extractions resulted in a maximum extraction yield. The extracts obtained were used for the preparation of coating and edible films, optimized in the formulation. (4) Conclusions: The addition of anthocyanins to films resulted in increased sample structuring and mechanical properties that are valid for applications, like dipping using coverage methods. The packaging is also attractive and pH-sensitive.
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Santzouk, G., S. Santzouk, I. Gerodimou, D. Tsaoulidis, and M. Dormousoglou. "Opuntia ficus indica (Prickly pear): extraction and characterization of products with anti-age and antioxidant activity." Bulgarian Chemical Communications 51, Special Issue B (2019): 52–55. https://doi.org/10.34049/bcc.51.B.011.
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The use and application of natural products in Food and Pharmaceutical industry is of great interest, since the beginning of human history and are the basis of modern medicine. In the present study the ethanolic extraction of Opuntia ficus indica is investigated. This plant has been used in traditional medicine because of its role in treating a number of diseases and conditions, including anti-inflammatory effects [1]. Specifically, in this study, the plants were collected and split in two parts. One was consisted of the seeds and the other of the leaves and fruits. Subsequently, was held dry of the different parts of the plant. The method of the extraction process involved maceration followed by percolation and in the end of the process a strict protocol of quality control was applied as also an HPLC analysis. The extracts obtained via the specific extraction can be used either as individual medicinal formulations or in combination with other natural extracts to reestablish the healthy natural functions of the body. The current study, aims to production of pharmaceutical products such as capsules, tablets, drops, powder and elixirs from Opuntia ficus indica. The most important feature of these productions that all materials and products are non-toxic, natural and friendly to the environment.
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Zheng, Mingfeng, Junsheng Fu, Xin Liu, et al. "Physicochemical properties and the extraction process of natural melanin from Auricularia polytricha." SDRP Journal of Food Science & Technology 4, no. 1 (2019): 1–12. http://dx.doi.org/10.25177/jfst.4.1.2.
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Smerea, Olga, and Viorica Bulgaru. "Anthocyanins – methods of extraction and stabilization." Journal of Engineering Science 31, no. 3 (2024): 179–95. https://doi.org/10.52326/jes.utm.2024.31(3).13.
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Anthocyanins, natural pigments present in plants which are of interest among researchers due to their antioxidant qualities and potential therapeutic advantages in certain contexts. Their occurrence in fruits, vegetables, and blossoms attributes to their unique hues. Once obtained, the dyes extracted from berries can serve as natural coloring agents in a variety of food items, displacing artificial dyes. Moreover, the antioxidative characteristics of anthocyanins position berry dyes as potential sources of functional components for creating healthier food alternatives. Overall, the extraction of pigments from berries shows considerable promise for both the food sector and health-conscious consumers. In this context, emphasis is placed on the identification of advantageous extraction methods from the point of view of the quality of the biologically active compounds obtained, the extraction yield and the impact of the respective methods on the environment. Directing the technological parameters for obtaining storage-stable phytochemical compounds is also important. The purpose of this paper is to deepen the methods of anthocyanin extraction, their advantages and disadvantages together with the condition of the berries subjected to the extraction processes. Moreover, it analyzes the stabilization methods of phytochemical compounds during storage and their use in the food industry.
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Konovalenko, Ilona, and Anna Kriukova. "Study of the pharmacotechnological parameters of ginger rhizomes for developing the conditions of biologically active substances extracting." Annals of Mechnikov Institute, no. 4 (December 4, 2023): 79–83. https://doi.org/10.5281/zenodo.10256701.
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<strong>Introduction. </strong>Phytotherapy is a form of medicinal auxiliary therapy that meets all these requirements. The goal of phytotherapy is to influence the self-regulation processes of the human body. Typically, treatment with herbal preparations excludes side effects, and their high therapeutic activity has been substantiated by the results of fundamental research conducted by Ukrainian and international pharmacologists. <strong>Purpose of the study. </strong>Research on the pharmacotechnological properties of ginger rhizomes, including physicochemical investigations and extraction methods aiming to efficiently extract biologically active substances, has been conducted. <strong>Materials and methods.</strong> The objects of the study are ginger rhizomes (manufacturer "Medagroprom", Dnipro). Research methods: information–search, information–analytical, physico–chemical, pharmacotechnological (specific weight, bulk density, apparent density, porosity, heterogeneity of the material, free volume of the layer, angle of repose, water absorption coefficient). <strong>Results & Discussion. </strong>The conducted technological studies confirmed that the studied raw material is characterized by a high value of bulk mass and high diversity. Volumetric weight in the studied raw material had a value within 0.195 g/cm3. Free volume of the layer for ginger rhizomes had high values, which shows the need to use larger volumes of the extractant to wet the MPM and compact it when loading it into the extraction device. The difference between the specific and volumetric weight shows that the raw material occupies a large volume, as a result of which it is necessary to take into account when calculating the ratio of MPM and the finished product, choosing the size of the extractor, the features of loading the raw materials, etc. The water absorption coefficient was 1.55. This indicator is an important characteristic when calculating the amount of extractant in the subsequent production of liquid extract. The maximum level of extractives is ensured when obtaining a liquid extract with a raw material particle size of 1–3 mm, a ratio of raw materials and extractant – 1:10, extraction for 60–180 min at a temperature of 90 ± 5 °C, infusion until cooling – 30 min. Maceration is not an efficient, cost-effective method, and at the same time it is time-consuming, and the percolation method requires industrial capacities. At the same time, ethanol, as an extractant, is not an economically beneficial solvent compared to purified water. <strong>Conclusions. </strong>The main technological parameters of the medicinal plant raw material were determined, which confirmed that the ginger rhizomes are characterized by high values of porosity, free volume of the layer, bulk mass and low porosity of the raw material. On the basis of pharmacotechnological studies, the influence of extraction parameters was studied. It was determined that the optimal mode of extraction of the aqueous extract is infusion in a water bath (water temperature – 90 °C) for 60 minutes, infusion at room temperature until cooling - 30 minutes at a ratio of raw materials: extractant 1:10.<strong>Keywords: </strong>ginger rhizomes, pharmacotechnological properties, extraction.
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Cherkasov, Rafael A., Airat R. Garifzjanov, Svetlana V. Leont'eva, Elena B. Bazanova, and Olga B. Bazanova. "Extraction Properties of New Aminophosphinoxide Compounds." Phosphorus, Sulfur, and Silicon and the Related Elements 186, no. 4 (2011): 999–1000. http://dx.doi.org/10.1080/10426507.2010.514672.
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Khongthaw, Banlambhabok, P. K. Chauhan, Kanika Dulta, Vinod Kumar, and Joshua O. Ighalo. "Lycopene: Extraction, microencapsulation, and therapeutic properties." Bioresource Technology Reports 25 (February 2024): 101787. http://dx.doi.org/10.1016/j.biteb.2024.101787.
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Albe-Slabi, Sara, Odile Mesieres, Christelle Mathé, Mbalo Ndiaye, Olivier Galet, and Romain Kapel. "Combined Effect of Extraction and Purification Conditions on Yield, Composition and Functional and Structural Properties of Lupin Proteins." Foods 11, no. 11 (2022): 1646. http://dx.doi.org/10.3390/foods11111646.
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Lupin meal presents great potential as an alternative plant-based source of proteins for human nutrition. In the present work, different conditions of extraction and purification were evaluated for production of lupin protein isolates. The results showed that the protein extraction yield was comparable at acidic and conventionally used alkaline extraction pH (37% vs. 40–45%, respectively). Proteins extracted were principally composed of globulins. The ionic strength negatively impacted the protein extractability at pH 2, whereas no significant differences were observed between extractions at 20 to 50 °C. The selected extraction conditions (pH 2 and 7) combined with purification by isoelectric precipitation or ultrafiltration process generated the isolate-grade products. Interestingly, further characterization revealed a partial denaturation of proteins extracted at pH 2 resulting in loss of protein solubility at pH 6 and 7 (10–50%), modifications in secondary structure, lower thermal stability, and formation of protein aggregates. However, foaming and emulsifying properties were generally similar for almost all lupin isolates. Further investigation might be of interest with regard to the extraction behaviours and structural and functional properties of specific lupin protein fractions.
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Rosyida, V. T., S. N. Hayati, T. Wiyono, C. Darsih, and D. Ratih. "Effect of aqueous extraction method on total water-soluble polysaccharides content and phytochemical properties of white oyster mushroom (Pleurotus ostreatus)." IOP Conference Series: Earth and Environmental Science 1377, no. 1 (2024): 012064. http://dx.doi.org/10.1088/1755-1315/1377/1/012064.
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Abstract White oyster mushroom (Pleurotus ostreatus) is an important raw material for nutraceuticals because it contains various bioactive substances, including polysaccharides, vitamins, phenolic acids, terpenoids, and sterols. P. ostreatus mushroom polysaccharides possess diverse biological activities (antioxidant, hyperglycemic effects, and immunomodulatory). The extraction process impacts the yield, affecting the biological function of natural active ingredients. In this study, aqueous extraction methods, i.e., ultrasonic-assisted extraction (UAE), microwave-assisted extraction (MAE), and kinetic-assisted hot extraction (KAHE), were applied to investigate the impact of extraction methods on polysaccharides crude extract from the fruiting bodies of P. ostreatus mushroom and their phytochemical properties. Water-soluble polysaccharides content, total polyphenolic content, total terpenoid content, and antioxidant level were analyzed using the spectrophotometric method by phenol-sulfuric acid, Follin-Ciocalteau’s reagent, vanillin-perchloric acid, and 1,2-diphenyl-2-picrylhydrazyl (DPPH) scavenging assay, respectively. After the extraction process, the morphological alterations on the surface of mushroom residues were observed using Scanning Electron Microscopy (SEM). The investigation has shown that aqueous extraction methods significantly affect the yields of polysaccharides crude extract and other phytochemical properties, i.e., total phenolic content, terpenoid content, and the DPPH free radical scavenging activity. The sample from MAE had the highest total water-soluble polysaccharide content (61,73±1,35% w/w DW) and the highest total phenolic content (3,44±0,75 %w/w DW). MAE method has the best potential and efficiency compared to UAE and KAHE for extracting polysaccharides while maintaining their phytochemical properties.
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García-Villegas, Abigail, Alejandro Rojas-García, María del Carmen Villegas-Aguilar, et al. "Cosmeceutical Potential of Major Tropical and Subtropical Fruit By-Products for a Sustainable Revalorization." Antioxidants 11, no. 2 (2022): 203. http://dx.doi.org/10.3390/antiox11020203.
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The increasing production of tropical fruits followed by their processing results in tons of waste, such as skins or seeds. However, these by-products have been reported to be rich in bioactive compounds (BACs) with excellent properties of interest in the cosmeceutical industry: antioxidant, anti-aging, anti-inflammatory, antimicrobial and photoprotective properties. This review summarizes the tropical fruits most produced worldwide, their bioactive composition and the most important and studied therapeutic properties that their by-products can contribute to skin health, as well as the different approaches for obtaining these compounds using techniques by conventional (Soxhlet, liquid-liquid extraction or maceration) and non-conventional extractions (supercritical fluid extraction (SFE), ultrasound-assisted extraction (UAE), microwave-assisted extraction (MAE), pressurized liquid extraction (PLE) and two-phase aqueous system), followed by their identification by HPLC-MS or GC-MS analysis. Moreover, this work encompasses several studies that may prove the effects of seeds and skins from tropical fruits against oxidative stress, hyperpigmentation, acne, aging or UV radiation. Therefore, the investigation of functional components present in tropical fruit by-products under a circular bioeconomy model could be of great interest for the cosmeceutical industry and a very promising option for obtaining new cosmeceutical formulations.
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Chang, Tanran, Hang Li, Hongning Lv, et al. "Extraction, Physicochemical Properties, Anti-Aging, and Antioxidant Activities of Polysaccharides from Industrial Hemp Residues." Molecules 27, no. 18 (2022): 5746. http://dx.doi.org/10.3390/molecules27185746.
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A large amount of hemp polysaccharides remain in industrial hemp residues (IHR) after cannabidiol extraction, resulting in the waste of resources. Therefore, the systematic study of hemp polysaccharides is beneficial to the development of IHR in the future. In this study, the extraction of industrial hemp residues polysaccharide (IHRPs) was optimized by single-factor experiment and orthogonal experimental design. The optimum heating extraction conditions were extraction temperature 98 °C, solid–liquid ratio 1:10, extraction time 1 h, number of successive extractions 2, and pH at 4. The extraction ratio and the polysaccharide content were 20.12 ± 0.55% and 12.35 ± 0.26% at the conditions, respectively. Besides, the best alcohol precipitation conditions were pumping with 2 L/h, stirring continuously, and ice-water bath for 4 h. The crude IHRPs was further purified by column chromatography and the polysaccharide/protein contents of purified IHRPs were 34.44% and 1.61%. IHRPs was mainly made up of ten monosaccharides and some non-sugar components including organic acids, flavonoids, steroids, and glycoside. The FT-IR demonstrated the polysaccharide skeleton of IHRPs. Moreover, the DPPH and ABTS scavenging rate of IHRPs were 76.00% and 99.05% at the concentrations of 1 mg/mL. IHRPs could promote the epidermal cells proliferation and healing of cell scratches. Meanwhile, IHRPs could promoted the expression of anti-aging-related genes. Overall, IHRPs could be a desirable natural source of antioxidants and anti-aging products in many aspects.
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Liu, Yong, Congfu Xu, Qiong Zhang, and Yunhe Pan. "Rough Rule Extracting From Various Conditions: Incremental and Approximate Approaches for Inconsistent Data." Fundamenta Informaticae 84, no. 3-4 (2008): 403–27. https://doi.org/10.3233/fun-2008-843-408.
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Rough rule extraction refers to the rule induction method by using rough set theory. Although rough set theory is a powerful mathematical tool in dealing with vagueness and uncertainty in data sets, it is lack of effective rule extracting approach under complex conditions. This paper proposes several algorithms to perform rough rule extraction from data sets with different properties. Firstly, in order to obtain uncertainty rules from inconsistent data, we introduce the concept of confidence factor into the rule extracting process. Then, an improved incremental rule extracting algorithm is proposed based on the analysis of the incremental data categories. Finally, above algorithms are further extended to perform approximate rule extraction from huge data sets. Preliminary experiment results are encouraging.
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Afonso, Tiago Barros, Sara Marçal, Pedro Vale, Ana Sofia Sousa, João Nunes, and Manuela Pintado. "Exploring the Bioactive Potential of Mushroom Aqueous Extracts: Antimicrobial, Antioxidant, and Prebiotic Properties." Applied Sciences 15, no. 3 (2025): 1551. https://doi.org/10.3390/app15031551.
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Mushrooms provide essential nutrients and bioactive compounds, namely glucans, protein, and phenolic compounds. In this study, two aqueous extractions were performed (M1 and M2) using Pleurotus ostreatus, Pleurotus eryngii, and Agrocybe cylindracea. In M1, a hot extraction (extract M1) (90 °C, 700 rpm, 1 h) was performed. In M2, a room-temperature extraction (extract M2A) followed by a hot extraction (extract M2B) (90 °C, 700 rpm, 1 h) of the extract M2A residue was performed. The M2B extracts showed the lowest extraction yields (12.58–21.78%), while the other yields ranged between 30.91% and 46.03%. All extracts had high protein (12.09–32.97 g/100 g of dry extract), glucan (12.69–48.57 g/100 g of dry extract), and phenolic contents (7.90–16.65 mg GAEs/g of dry extract) and high antioxidant (ABTS and ORAC assays), antimicrobial, antibiofilm, and prebiotic activities. So, they have potential to be used as functional ingredients or natural preservatives. Extracts from A. cylindracea stood out since they had higher protein content, antioxidant activity, and prebiotic activity (extract M1) and inhibited a higher number of foodborne bacteria (only extract M2A). However, unlike extracts from P. ostreatus and P. eryngii, at 40 mg/mL, they had cytotoxic effects.
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Mojica, Elmer-Riko, Jozlyn Charland, Custer Deocaris, and Jose Micor. "Potential and Performance of Accelerated Solvent Extraction (ASE) in Obtaining Bioactive Compounds from Bee Propolis: Comparison with Soaking, Ultrasonication, and Microwave-Assisted Methods." Journal of Tropical Life Science 11, no. 2 (2021): 187–92. http://dx.doi.org/10.11594/jtls.11.02.08.
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Propolis is a natural resinous substance collected by honeybees from buds and exudates of trees. The material has attracted much attention in recent years as a functional food component since it possesses various biological properties, including antimicrobial, antioxidative, and anti-ulcer properties. In this study, the performance of accelerated solvent extraction (ASE) was assessed and compared with varying methods of extraction: soaking (maceration), ultrasonication, and microwave-assisted methods. Gas chromatography-mass spectrometry (GC-MS) and other spectroscopic techniques, such as absorbance and fluorescence, were employed to assess the efficiency in the extraction of natural products. The antioxidant activity and phenolic content of the different extracts were also determined. Results showed samples obtained from the microwave method showed the highest yield in the extraction of bioactive compounds. Although microwave showed the best method in this study, some issues and recommendations on ASE application for extracting natural products from bee propolis were discussed. Given the ease in controlling extraction temperature with ASE, this technique has a great potential to be a better method for extraction of heat-labile natural products from propolis should optimization of conditions for extraction were further performed.
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Nguyen, V. P. Thinh, Jon D. Stewart, Florent Allais, and Irina Ioannou. "Optimization of the Recovery of Secondary Metabolites from Defatted Brassica carinata Meal and Its Effects on the Extractability and Functional Properties of Proteins." Foods 11, no. 3 (2022): 429. http://dx.doi.org/10.3390/foods11030429.
Full textAbstract:
The sustainable extraction of secondary metabolites from Brassica agro-industrial by-products often involves the use of high concentrations of ethanol, and/or high temperatures, which tends to decrease the efficiency of protein extraction (yield, profile, etc.). To understand the limits of the combination of these two extraction processes, aqueous ethanol extraction of secondary metabolites (e.g., phenolic compounds and glucosinolates) from Brassica carinata defatted meal was optimized using Response Surface Methodology. The validated models predicted that aqueous ethanol extraction of defatted Carinata meal, with a low aqueous EtOH concentration (22% EtOH) at moderate Te (50 °C), enables the efficient recovery of secondary metabolites (sinapine = 9.12 ± 0.05 mg/gDM, sinigrin = 86.54 ± 3.18 µmol/gDM) while maintaining good protein extractability (59.8 ± 2.1%) from successive alkaline extractions. The evaluation of functional properties of the resulting protein isolates revealed that aqueous extraction, under optimized conditions, improves foaming activity while preserving emulsion ability.
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Latifasari, Nurul, Faizah Faizah, and Ajeng Dyah Kurniawati. "Effect of Time Extraction Cardamom Seeds in Aquos Solvent on Physical, Total Phenol, and Flavonoid Properties." Journal of Applied Food Technology 11, no. 1 (2023): 1–7. http://dx.doi.org/10.17728/jaft.21051.
Full textAbstract:
Cardamom seed spice is a plant that has bioactive components which are thought to be able to act as a natural antioxidant, so it has the potential to be a natural food additive in functional food products. These bioactive components can be obtained by extraction method using distilled water as a solvent. However, there have not been many studies regarding the effect of the extraction time used. Therefore, this research aims to determine the effect of the extraction time of cardamom seeds in simplicia and powder form on the physical properties, total phenols and total flavonoids. The extraction method used is maceration with extraction time levels of 5 minutes, 7 minutes and 9 minutes using distilled water as a solvent. The extract obtained will be tested for physical, qualitative and quantitative properties of total phenols and total flavonoids. The research results show that cardamom seed extract contains phenolics and flavonoids compound with different strengths and the extract color is brownish yellow. The resulting yield was 27.14% with the highest of total phenols 168,796 µg/mL and total flavonoids 38,564 µg/mL in the treatment of cardamom seed powder extraction time of 9 minutes. Cardamom seed powder extract prepared with an extraction time of 9 minutes is more capable of extracting bioactive components compared to other time levels and simplicia form.