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Journal articles on the topic 'Extraction of V'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Baharin, A. N., N. Mohd Thani, and S. M. Mustapa Kamal. "Enhancing the extraction of bioactive compounds from Morinda citrifolia leaves through citric acid-catalyzed ultrasonic processing." Food Research 9, Supplementary 1 (2025): 87–93. https://doi.org/10.26656/fr.2017.9(s1).040.

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Citric acid-catalyzed ultrasonic extraction is one of the emerging methods of extracting bioactive compounds in plants including Morinda citrifolia leaves. The ultrasonic extraction method offers a shorter operating time, reduces solvent consumption, and is environmentally friendly. This study was conducted to determine the effect of processing parameters citric acid concentration (0.1% w/v, 0.55% w/v, and 1.0% w/v), extraction time (1 min, 6 mins, and 11 mins), and power of extraction (1%, 38%, 75%) which affects the citric acid-catalyzed ultrasonic extraction and to study the effectiveness o

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Sofi’i, Imam, Zainal Arifin, and Oktafrina. "Energy Consumption for Patchouli Oil Extraction Using Ohmic Heating." IOP Conference Series: Earth and Environmental Science 1012, no. 1 (2022): 012062. http://dx.doi.org/10.1088/1755-1315/1012/1/012062.

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Abstract Currently, the process of releasing patchouli oil is carried out by extraction, water-steam distillation, and hydrodistillation. A new method for extracting patchouli by hydro distillation using electric voltage by ohmic heating has not been widely used. This paper aims to determine the energy requirements for extraction using ohmic heating. The method used is to make an extraction tool using electricity and extract the dried patchouli leaves. The electricity used for extraction is AC electricity with voltages of 90 V, 100 V, and 110 V. The ratio of patchouli to water is 1:12. Observa

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Cho, In-Ho, Eberhard Hohaus, Axel Lehnen, and Harro Lentz. "Extraktionen von Ginsenosiden aus Ginseng-Wurzeln mit flüssigem Ammoniak, Methanol-Wasser oder Wasser/ Extractions of Ginsenosidesj from Ginseng Roots with Liquid Ammonia, Methanol-Water or Water." Zeitschrift für Naturforschung B 55, no. 3-4 (2000): 326–32. http://dx.doi.org/10.1515/znb-2000-3-415.

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Abstract Extractions of ginsenosides from ginseng roots with liquid ammonia, methanol/water (60:40; v/v) or water were carried out. The extracts have been analyzed qualitatively and quantitatively to valuate yield and selectivity of extractions of ginsenosides. Water supplied the lowest yield. The yields of extracts with liquid ammonia were higher than those with m ethanol-water (60%). Yields of the ginsenosides Rb1, Rb2, Rc and Rd by extracting with liquid ammonia are about twice as much as those of the extraction with methanol-water (60%). It was proved by HPLC that malonyl-ginsenosides m -R

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Ngo, Dat Trinh Tac, Ngoc Hieu Tran, and Kim Anh Hoang. "Study of microwave-assisted extraction of polyphenol from Phyllanthus urinaria." Jurnal Gizi Indonesia (The Indonesian Journal of Nutrition) 13, no. 1 (2024): 88–98. https://doi.org/10.14710/jgi.13.1.88-98.

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ABSTRACTBackground: Phyllanthus urinaria, found extensively in tropical Asian countries, possesses numerous biological activities attributed to its polyphenol compounds.Objective: This study aims to optimize polyphenol extraction from Phyllanthus urinaria using microwave assistance.Materials and Methods: First, the effects of parameters including ethanol concentration (used as the solvent) (40–80% v/v), material-to-solvent ratio (1:10–1:50 w/v), extraction time (30–150 minutes), and extraction temperature (30–70°C) on conventional extraction were investigated. Subsequently, the effects of micr

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Chen, An Hui, Shang Long Chen, En Qi Liu, et al. "Ultrasonic-Assisted Extraction of Total Flavonoids from Cassia Seeds." Applied Mechanics and Materials 707 (December 2014): 121–25. http://dx.doi.org/10.4028/www.scientific.net/amm.707.121.

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The ethanol concentration, solid-to-solvent ratio, extraction temperature and extraction time were optimized by using orthogonal array design, an ultrasonic-assisted extraction (UAE) method was formed for extracting total flavonoids from Cassia Seeds. The optimal conditions for total flavonoids preparation were found to be extracted at 55 °C for 40 min with 75% (v/v) ethanol and a solid-to-liquid ratio of 1:30 (g/mL). The UAE was proven more efficient than the conventional extraction (CE) technique, which could be considered a time-saving method. Therefore, the UAE could be a promising candida

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Ondrejovič, M., F. Kraic, H. Benkovičová, and S. Šilhár. "Optimisation of antioxidant extraction from lemon balm (Melissa officinalis)." Czech Journal of Food Sciences 30, No. 4 (2012): 385–93. http://dx.doi.org/10.17221/436/2010-cjfs.

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The effects of the propan-2-ol proportion in the extraction solvent (PPES), solid to liquid ratio (SLR), and extraction temperature on the extraction yield of antioxidants measured by 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical-scavenging activity and &beta;-carotene-linoleic acid bleaching inhibition activity (BCLM) were evaluated. Secondly, total polyphenol and flavonoid contents were determined to find possible relations of these parameters with antioxidant activity. The optimal conditions for the extraction were determined using response surface methodology (RSM). The optimal conditio

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Mayorov, V. G., and A. I. Nikolaev. "Tantalum (V) and niobium (V) extraction by octanol." Hydrometallurgy 66, no. 1-3 (2002): 77–83. http://dx.doi.org/10.1016/s0304-386x(02)00091-9.

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Li, Hong, and Rui Liu. "Study on Extraction of Natural Dyestuff from Lawsonia inermis." Advanced Materials Research 550-553 (July 2012): 1807–10. http://dx.doi.org/10.4028/www.scientific.net/amr.550-553.1807.

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The optimal process of extracting the natural dyestuff from Lawsonia inermis were studied. Results showed that the optimum extraction conditions are as follows: extraction solvent is 60% ethanol, the ratio between material and solvent is 1:20 (W/V), extraction temperature is 75°Cand extraction time is 120min.

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Wang, Ya Qi, Zhen Feng Wu, Ji Ping Lan, and Ming Yang. "Vacuum Assisted Extraction of Indirubin from Radix isatidis through Orthogonal Test Method." Advanced Materials Research 941-944 (June 2014): 1174–77. http://dx.doi.org/10.4028/www.scientific.net/amr.941-944.1174.

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A new vacuum assisted extraction (VAE) method was established and applied for the extraction of indirubin from Radix Isatidis. The major factors of VAE process such as boiling temperature, ethanol level, extraction time and extraction cycles, which have influence on the extraction yield of indirubin were tested by an orthogonal array L9 (34).The results show that the optimum extraction conditions are ethanol level 40% (v/v), boiling temperature 60 °C, extraction time 3 h and extraction 3 cycles. Under these conditions the extraction efficiency of indirubin reaches 1.091 mg/g, which is 30% high

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10

Gomes, G. L. G. C., C. A. Carbonari, E. D. Velini, M. L. B. Trindade, and J. R. M. Silva. "Extraction and Simultaneous Determination of Glyphosate, AMPA and Compounds of the Shikimic Acid Pathway in Plants." Planta Daninha 33, no. 2 (2015): 295–304. http://dx.doi.org/10.1590/0100-83582015000200015.

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This study has aimed to develop a method for simultaneous extraction and determination by liquid chromatography and mass spectrometry (LC-MS/MS) of glyphosate, aminomethylphosphonic acid (AMPA), shikimic acid, quinic acid, phenylalanine, tyrosine and tryptophan. For the joint analysis of these compounds the best conditions of ionization in mass spectrometry and for chromatographic separation of the compounds were selected. Calibration curves and linearity ranges were also determined for each compound. Different extraction systems of the compounds were tested from plant tissues collected from s

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Palleros, Daniel R. "Liquid-Liquid Extraction: Are n Extractions with V/n mL of Solvent Really More Effective Than One Extraction with V mL?" Journal of Chemical Education 72, no. 4 (1995): 319. http://dx.doi.org/10.1021/ed072p319.

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12

Doerr, S. H., C. T. Llewellyn, P. Douglas, et al. "Extraction of compounds associated with water repellency in sandy soils of different origin." Soil Research 43, no. 3 (2005): 225. http://dx.doi.org/10.1071/sr04091.

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After an initial evaluation of several solvents, the efficiency of Soxhlet extractions with isopropanol/ammonia (s.g. 0.88) (70 : 30 v : v; 24 h) in extracting compounds associated with water repellency in sandy soils was examined using a range of repellent and wettable control soils (n = 15 and 4) from Australia, Greece, Portugal, The Netherlands, and the UK. Extraction efficiency and the role of the extracts in causing soil water repellency was examined by determining extract mass, sample organic carbon content and water repellency (after drying at 20°C and 105°C) pre- and post-extraction, a

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Sorita, Guilherme Dallarmi, Wilson Daniel Caicedo Chacon, Monique Martins Strieder, et al. "Biorefining Brazilian Green Propolis: An Eco-Friendly Approach Based on a Sequential High-Pressure Extraction for Recovering High-Added-Value Compounds." Molecules 30, no. 1 (2025): 189. https://doi.org/10.3390/molecules30010189.

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Propolis is a valuable natural resource for extracting various beneficial compounds. This study explores a sustainable extraction approach for Brazilian green propolis. First, supercritical fluid extraction (SFE) process parameters were optimized (co-solvent: 21.11% v/v CPME, and temperature: 60 °C) to maximize yield, total phenolic content (TPC), antioxidant capacity, and LOX (lipoxygenase) inhibitory activity. GC–MS analysis identified 40 metabolites in SFE extracts, including fatty acids, terpenoids, phenolics, and sterols. After selecting the optimum SFE process parameters, a sequential hi

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Amabile, Claudia, Teresa Abate, Simeone Chianese, Dino Musmarra, and Raul Muñoz. "Exploring 1,3-Dioxolane Extraction of Poly(3-hydroxybutyrate) and Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) from Methylocystis hirsuta and Mixed Methanotrophic Strain: Effect of Biomass-to-Solvent Ratio and Extraction Time." Polymers 16, no. 13 (2024): 1910. http://dx.doi.org/10.3390/polym16131910.

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The increasing need for biodegradable polymers demands efficient and environmentally friendly extraction methods. In this study, a simple and sustainable method for extracting polyhydroxybutyrate (PHB) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate (PHB-co-HV) from Methylocystis hirsuta and a mixed methanotrophic consortium with different biopolymer contents was presented. The extraction of biopolymers with 1,3-dioxolane was initially investigated by varying the biomass-to-solvent ratio (i.e., 1:2 w v−1, 1:4 w v−1, 1:6 w v−1, 1:8 w v−1 and 1:10 w v−1) and extraction time (6, 8 and 10 h) at th

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Le, Tien X., Thanh N. Nguyen, Tuyen B. T. Nguyen, et al. "Optimization of Piperine Extraction Process from Vietnamese White Pepper." IOP Conference Series: Earth and Environmental Science 1340, no. 1 (2024): 012020. http://dx.doi.org/10.1088/1755-1315/1340/1/012020.

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Abstract The primary theme of this research was to consider and examine the piperine extraction process conditions from white pepper Piper nigrum L. The extraction method was carried out using a solvent cyclic extraction system with the same operating principle as the industrial apparatus and widely used in actual production. First, the one-factor-at-a-time method was used to determine the effects of the parameters on each process. The extraction conditions such as the ethanol concentration (90% v/v), solvent/solid ratio (3:1 mL/g), 3 times extraction per batch, each time at 70 °C for 60 minut

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Bai, Xin Peng, Xiao Lei Zhao, Zhi Yong Guo, and Xiao Qin Liu. "Optimization of Processing Parameters for the Blitzkrieg Extraction of Noni (Morinda citrifolia L) Seed Oil." Advanced Materials Research 361-363 (October 2011): 785–88. http://dx.doi.org/10.4028/www.scientific.net/amr.361-363.785.

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A simple and rapid blitzkrieg extraction procedure has been developed and optimized for hexane extraction yield from the noni (Morinda citrifolia L) seed. Several variables that could potentially affect the extraction efficiency, namely, solid: liquid ratio (g /mL), blitzkrieg extraction voltage (V), extracting time (s) have been optimized by means of response surface methodology (RSM). The optimum conditions were the ratio of material to liquid 95g/500mL, blitzkrieg extraction voltage 148V and extracting time 79s. Under the optimum operating conditions, the extraction yield was 10.42 %, a dra

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17

N., AGNIHOTRI, DASS R., and R. MEHTA J. "Extraction Spectrophotometric Determination of Vanadium(v) using 2'-Hydroxyacetophenonebenzoylhydrazone." Journal of Indian Chemical Society Vol. 75, Aug 1998 (1998): 486–87. https://doi.org/10.5281/zenodo.5936301.

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Department of Chemistry, Kurukshetra University, Kurukshetra-136 119 <em>Manuscript received 5 May 1997, revised 22 December 1997, accepted 20 March 1998</em> A light brown 1: 1 complex of vanadium(v) with 2'-hydroxyacetophenone benzoylhydrazone (HABH) is extracted into chloroform from 0.0--0.5 <em>M</em> CH<sub>3</sub>COOH medium containing 0.6-1.1 ml of 0.1% HABH solution. It obeys Beer's law over the concentration range 0.0-3.5 <em>µ</em>g V ml<sup>-1</sup> having molar absorptivity and Sandell's sensitivity as 8.93 x 10<sup>3</sup> dm<sup>3</sup> mol<sup>-1</sup> cm<sup>-

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KEARNS, KATE. "Extraction from make the claim constructions." Journal of Linguistics 34, no. 1 (1998): 53–72. http://dx.doi.org/10.1017/s002222679700683x.

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The sequence make the claim that S has certain syntactic properties which indicate the presence of some sort of complex predicate, previously suggested to be a Light Verb Construction (LVC) or a reanalysis of N and V to a complex V. I consider and reject both these proposals, and propose an alternative structure which is still a type of complex predicate. Adopting the Locality framework of Manzini (1992, 1994), I show that a syntactic account of extractions from make the claim follows straightforwardly. I also show that extraction from make the claim is distinct from extraction from indefinite

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Heal, Hussein Hamed, Zainab Tuama Al-Dallee, and Enas J. Khadim. "Extraction, Isolation and Identification of Luteolin Flavonoid from Vitex pseudonegundo leaves." IOP Conference Series: Earth and Environmental Science 1262, no. 5 (2023): 052016. http://dx.doi.org/10.1088/1755-1315/1262/5/052016.

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Abstract Objective: Using HPLC as a quantitative estimate technique, the optimal extraction solvent for luteolin from Vitex pseudo-negundo was identified. Methods: leaves V. pseudonegundo were gathered, washed, and dried. employeing methanol and ethanol as the extraction solvents (both with varied strengths), as well as the extraction techniques of maceration, reflux, and Soxhlet. The amount of luteolin in each sample extract was measured using a preparative HPLC technique Results: Methanol was the best solvent, and the best extraction method was the reflex extraction method, based on HPLC res

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Alara, Oluwaseun Ruth, Nour Hamid Abdurahman, and John Adewole Alara. "TWO LEVEL FACTORIAL SCREENING OF MICROWAVE-ASSISTED EXTRACTION PARAMETERS FOR THE RECOVERY OF PHENOLIC COMPOUNDS FROM VERNONIA CINEREA LEAF." Journal of Chemical Engineering and Industrial Biotechnology 5, no. 1 (2019): 16–28. http://dx.doi.org/10.15282/jceib.v5i1.3887.

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Vernonia cinerea is one of the medicinal plants with several potentials for treating different ailments. In the present study, Microwave-assisted extraction (MAE) was employed in extracting phenolics compounds from this plant. However, different factors that affect this extraction method in the recovery of phenolics compounds abound, these factors need to be screened to determine actual contributing factor in order to minimize cost. Irradiation time (1-5 min), ethanol concentration (20-60% v/v), microwave power (40-80 W), extraction temperature (40-80 oC), and feed/solvent (1:10 - 1:18 g/mL) h

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Begum, Syeda Nurunnesa, Mobarok Hossain, Md Adnan, Chowdhury Habibur Rahaman, and Arif Reza. "Optimization and Characterization of Phenolic Extraction Conditions and Antioxidant Activity Evaluation of Adenanthera pavonina L. Bark." Plants 12, no. 22 (2023): 3902. http://dx.doi.org/10.3390/plants12223902.

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The presence of high levels of secondary metabolites in medicinal plants can significantly influence the progress of drug development. Here, we aimed to maximize phenolic extraction from Adenanthera pavonina L. stem bark using various solvents such as ethyl acetate, methanol, petroleum ether, and chloroform. A response surface method (RSM) with a central composite design (CCD) statistical technique was applied to optimize the extraction process, employing three important extracting parameters such as extraction time (h), temperature (°C), and solvent composition (% v/v of methanol/water) to ob

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Merzic, Sabina, Ajla Sehanovic, Amila Music, et al. "Influence of solvents on polyphenol content and antioxidant activity of fig leaf extracts obtained by maceration and ultrasonic extraction." International Journal of Advanced Chemistry 9, no. 2 (2021): 70. http://dx.doi.org/10.14419/ijac.v9i2.31590.

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In this paper, the polyphenol content and antioxidant activity of fig leaf extracts were analyzed. Extraction was performed with methanol, ethanol, acetone and their aqueous mixtures (50:50 v/v). Extractions were performed with stirring at 300 rpm on a vibromix and ultrasonic bath for 15 minutes. The polyphenol content was determined spectrophotometrically using the Folin-Ciocalteu test. Antioxidant capacity was tested using the FRAP and DPPH methods. The results showed a significant effect of extraction of bioactive components using an organic solvent:water mixture in relation to the organic

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Shin, Yerim, Byeongryeol Ryu, Minji Kang, Minjun Kim, and Jungdae Lim. "Enhanced Extraction of Tanshinones from Salvia miltiorrhiza Using Natural-Surfactant-Based Cloud Point Extraction." Processes 12, no. 10 (2024): 2227. http://dx.doi.org/10.3390/pr12102227.

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Salvia miltiorrhiza (SM) contains the tanshinones, a compound with various pharmacological effects, and has been extensively studied as a pharmaceutical material. However, conventional methods for extracting tanshinones face challenges such as environmental hazards and high cost. In this study, we aimed to effectively extract tanshinones from SM using cloud point extraction (CPE) with lecithin, a natural surfactant. By optimizing various extraction conditions including the solid-to-liquid ratio, lecithin concentration, NaCl concentration, pH, and equilibrium temperature, the optimal extraction

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Fouad, Elsayed Ali. "Optimizing Emulsion Liquid Membrane Process for Extraction of Nickel from Wastewater Using Taguchi Method." International Journal of Research in Science 3, no. 1 (2017): 1. http://dx.doi.org/10.24178/ijrs.2017.3.1.01.

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Abstract--The main objectives of this research were focused on extracting nickel ions from waste water using emulsion liquid membrane as well as determining the optimal conditions for the extraction process. Taguchi experimental design method was applied to determine the optimum extraction conditions. The controllable factors of the emulsion liquid membrane process were carrier; surfactant; and internal phase concentration, treating ratio, stirring time, and feed phase acidity were optimized. The contribution of each controllable factor was also explored. The results indicated the greatest eff

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Li, Lingyi, Shanbo Zhang, Bin Yu, Shao Quan Liu, and Yancai Xiong. "Fractionating the Flavonoids in Lonicerae japonicae Flos and Lonicerae flos via Solvent Extraction Coupled with Automated Solid-Phase Extraction." Foods 13, no. 23 (2024): 3861. http://dx.doi.org/10.3390/foods13233861.

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Due to the structural diversity of flavonoids in functional plant foods and the inherent limitations of existing techniques, it is important to develop a simple and green (environmentally friendly) method of extracting flavonoids from plant foods. In this study, a method involving solvent extraction followed by automated solid-phase extraction was developed for extracting flavonoids from Lonicerae japonicae flos (JYH) and Lonicerae flos (SYH), both of which are widely used functional plant-based foods in Asian countries. For the optimisation of the solvent extraction method, solvent concentrat

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Makrygiannis, Ioannis, Vassilis Athanasiadis, Eleni Bozinou, Theodoros Chatzimitakos, Dimitris P. Makris, and Stavros I. Lalas. "An Investigation into Apricot Pulp Waste as a Source of Antioxidant Polyphenols and Carotenoid Pigments." Biomass 2, no. 4 (2022): 334–47. http://dx.doi.org/10.3390/biomass2040022.

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The interest in extracting bioactive compounds from food processing waste is growing unabated. Apricots are widely consumed worldwide, and many tons of waste are produced annually. Therefore, apricot pulp waste (APW) may serve as a rich source of bioactive compounds. In the present study, we investigated the extraction of antioxidant polyphenols and carotenoid pigments from APW. In both cases, a response surface methodology was employed, so as to optimize the extraction parameters. As regards polyphenols, it was found that optimum extraction yield (i.e., 28.6 mg gallic acid equivalents per g o

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Tang, Xiu Hua, and Feng Zhen Zhang. "Study on Ultrasonic Extraction of Oligomeric Proantho Cyanidin from Chestnut Shell." Advanced Materials Research 955-959 (June 2014): 2880–84. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.2880.

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In this paper, the ultrasonic extraction method of Oligomeric Proantho Cyanidin with chestnut shells as raw materials is studied. Using single factor method we study the effects of different extraction time, extraction reagent, extracting agent concentration and ultrasonic power on the extraction rate of Oligomeric Proantho Cyanidin. After analyzing these various factors, we make the orthogonal experiment with the factors including extraction time, extraction agent concentration, extraction temperature, solid-liquid ration, and get the optimal conditions. The experimental results show that the

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Ilano, M. C. R., J. P. Tamayo, and J. P. Rivadeneira. "Optimization parameters for the extraction of anthocyanins from lipote (Syzygium curranii (C.B. Robinson Merr.)) using acidified ethanol solvent system." Food Research 7, no. 2 (2023): 236–40. http://dx.doi.org/10.26656/fr.2017.7(2).803.

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Lipote is one of the underutilized fruits in the Philippines that is a potential source of anthocyanins. In this study, various solvent mixing ratios were screened. Upon obtaining the best solvent system, the parameters (temperature, solid-liquid ratio (SLR), and extraction time) for extracting anthocyanins from lipote were optimized using Response Surface Methodology (RSM). The response considered for both the screening and optimization studies was the mean total anthocyanins content (TAC). Results showed that the best solvent ratio is 50:50:1 (v/v/v) of ethanol, water, and acetic acid, while

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Casazza, Alessandro Alberto, Michela Capraro, Marco Pedrazzi, et al. "Temperature-Dependent Olive Pomace Extraction for Obtaining Bioactive Compounds Preventing the Death of Murine Cortical Neurons." International Journal of Molecular Sciences 25, no. 2 (2024): 907. http://dx.doi.org/10.3390/ijms25020907.

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High-pressure and temperature extraction (HPTE) can effectively recover bioactive compounds from olive pomace (OP). HPTE extract obtained by extracting OP with ethanol and water (50:50 v/v) at 180 °C for 90 min demonstrated a pronounced ability to preserve intracellular calcium homeostasis, shielding neurons from the harmful effects induced by N-methyl-d-aspartate (NMDA) receptor (NMDAR) overactivation, such as aberrant calpain activation. In this study, the extraction temperature was changed from 37 to 180 °C, and the extracts were evaluated for their antioxidant potency and ability to preser

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Zhu, Shuqiang, Dongling Liu, Xinyue Zhu, Along Su, and Haixia Zhang. "Extraction of Illegal Dyes from Red Chili Peppers with Cholinium-Based Deep Eutectic Solvents." Journal of Analytical Methods in Chemistry 2017 (2017): 1–6. http://dx.doi.org/10.1155/2017/2753752.

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Deep eutectic solvents (DESs) as a new kind of green solvents have been used to extract bioactive compounds but there are few applications in extracting chrysoidine dyes. In this study, we developed an ultrasonic-assisted extraction method with choline chloride/hydrogen bond donor (ChCl/HBD) DES for the extraction of chrysoidine G (COG), astrazon orange G (AOG), and astrazon orange R (AOR) in food samples. Some experimental parameters, such as extraction time, raw material/solvent ratio, and temperature, were evaluated and optimized as follows: the ratio of ChCl/HBD, 1 : 2 (v/v); the ratio of

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Ren, Xiao Feng, and Wen Jing Zhu. "Optimal Conditions for Extraction of Oil from Fenugreek (Trigonella foenum - graecum L.) by Supercritical CO₂ Fluids (SFE-CO₂)." Advanced Materials Research 236-238 (May 2011): 2980–83. http://dx.doi.org/10.4028/www.scientific.net/amr.236-238.2980.

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The optimal conditions for extracting of fenugreek oil from material with supercritical CO2 fluids：extraction temperature 40°C,extraction pressure 25MPa，separation temperature 60°C, separation pressure one atmosphere pressure. Adding 50%(V/W) absolute alcohol as modifier, the highest extraction ratio is 8.95mg/g dry fenugreek seeds.

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Carretero-Peña, Selena, M. Rosario Palomo-Marín, Fernando Rueda-Holgado, Lorenzo Calvo, and Eduardo Pinilla-Gil. "Determination of Trace Elements in Atmospheric Samples by Ultrasonic Probe Microextraction and ICP-MS." Proceedings 2, no. 20 (2018): 1295. http://dx.doi.org/10.3390/proceedings2201295.

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Pb is a relevant atmospheric pollutant, mainly associated to particulate matter (PM). In this work, an ultrasound probe-assisted microextraction (UAME) pretreatment methodology has been optimized and validated for the extraction of Pb from atmospheric particulate matter samples before determination by ICP-MS. Factors that influence the ultrasonic extraction procedure were evaluated and optimized using a Box-Behnken design in conjunction with a response surface methodology, by assaying a PM certified reference material. The optimum conditions obtained for the Pb extraction are 62.5% of sonicati

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Saw, Nay Min Min Thaw, Pipob Suwanchaikasem, Rogelio Zuniga-Montanez, et al. "Influence of Extraction Solvent on Nontargeted Metabolomics Analysis of Enrichment Reactor Cultures Performing Enhanced Biological Phosphorus Removal (EBPR)." Metabolites 11, no. 5 (2021): 269. http://dx.doi.org/10.3390/metabo11050269.

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Metabolome profiling is becoming more commonly used in the study of complex microbial communities and microbiomes; however, to date, little information is available concerning appropriate extraction procedures. We studied the influence of different extraction solvent mixtures on untargeted metabolomics analysis of two continuous culture enrichment communities performing enhanced biological phosphate removal (EBPR), with each enrichment targeting distinct populations of polyphosphate-accumulating organisms (PAOs). We employed one non-polar solvent and up to four polar solvents for extracting me

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Wu, Yuan Feng, Jian Wei Mao, Shi Wang Liu, and Huang Jun. "Studies on Total Flavonoids Extraction from Perilla using Ultrasonic-Assisted Extraction." Advanced Materials Research 236-238 (May 2011): 2945–50. http://dx.doi.org/10.4028/www.scientific.net/amr.236-238.2945.

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The extraction of total flavonoids from Perilla, using ultrasonic-assisted method, was investigated in this work. Various extraction conditions, such as ethanol concentraction (V/V), volume-weight ratio between the extraction solution and the weight of Perilla (V/W), the extraction time (t), pH, temperature (T), agent concentration (c) have been investigated for their influences. With the help of orthogonal analysis, the optimum extraction conditions have been identified, an extraction rate of 0.97% could be achieved at an ethanol concentration of 60%, an extraction temperature of 50 °C, a vol

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Yang, Dongmei, Chunmiao Tao, and Xingyi Zhu. "Extraction and separation of tea polyphenols and caffeine from tea leaves by mechanochemical pretreatment." Boletin Latinoamericano y del Caribe de Plantas Medicinales y Aromaticas 24, no. 1 (2025): 101–10. https://doi.org/10.37360/blacpma.25.24.1.7.

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Mechanochemical pretreatment (MCPT) was applied to the extraction and separation of tea polyphenols (TP) and caffeine from tea leaves. Tea leaves were treated by mechanical activation with presence of Na2CO3(MC) for 75 s. One gram of obtained powder was taken for extraction and separation to obtain the sample of MC (A) fraction and MC (B) fraction. According to caffeine and epigallocatechin gallate (EGCG) (a representative component of TP) yields in the sample, the optimum MCPT extraction conditions were as follows: 15% (w/w) Na2CO3during milling, extracting caffeine with 40 mL75% (v/v) ethano

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García-Martín, Juan F., Chao-Hui Feng, Nelson-Manuel Domínguez-Fernández, and Paloma Álvarez-Mateos. "Microwave-Assisted Extraction of Polyphenols from Bitter Orange Industrial Waste and Identification of the Main Compounds." Life 13, no. 9 (2023): 1864. http://dx.doi.org/10.3390/life13091864.

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In this work, the extraction of phenolic compounds from orange waste (OW) obtained after the industrial extraction of neohesperidin from bitter oranges (Seville oranges) was assayed by microwave-assisted extraction (MAE) and Soxhlet extraction (SE). The extraction agents were ethanol and acetone. For SE, aqueous solutions of both extraction agents were used at 50%, 75%, and 100% (v/v). For MAE, a design of experiments was applied to determine the conditions that maximize the extraction yield. The independent variables were temperature (from 20 to 75 °C), process time (between 10 and 20 min), a

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Costa, Rui Dias, Raúl Domínguez-Perles, Ana Abraão, Véronique Gomes, Irene Gouvinhas, and Ana Novo Barros. "Exploring the Antioxidant Potential of Phenolic Compounds from Winery By-Products by Hydroethanolic Extraction." Molecules 28, no. 18 (2023): 6660. http://dx.doi.org/10.3390/molecules28186660.

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The residues generated in the wine industry (pomace, stems, seeds, wine lees, and grapevine shoots) are a potential source of bioactive compounds that can be used in other industries despite being sometimes underestimated. Different extraction methods using various solvents and extraction conditions are currently being investigated. Due to its natural occurrence in wines, safe behavior, and low toxicity when compared to other organic solvents, ethanol is used as an extracting agent. The aim of this study was to identify the winery by-product from the Região Demarcada do Douro and its correspon

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Hosseinkhani, Farideh, Anne-Charlotte Dubbelman, Naama Karu, Amy C. Harms, and Thomas Hankemeier. "Towards Standards for Human Fecal Sample Preparation in Targeted and Untargeted LC-HRMS Studies." Metabolites 11, no. 6 (2021): 364. http://dx.doi.org/10.3390/metabo11060364.

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Gut microbiota and their metabolic products are increasingly being recognized as important modulators of human health. The fecal metabolome provides a functional readout of the interactions between human metabolism and the gut microbiota in health and disease. Due to the high complexity of the fecal matrix, sample preparation often introduces technical variation, which must be minimized to accurately detect and quantify gut bacterial metabolites. Here, we tested six different representative extraction methods (single-phase and liquid–liquid extractions) and compared differences due to fecal am

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Savic Gajic, Ivana, Ivan Savic, Ivana Boskov, Stanko Žerajić, Ivana Markovic, and Dragoljub Gajic. "Optimization of Ultrasound-Assisted Extraction of Phenolic Compounds from Black Locust (Robiniae Pseudoacaciae) Flowers and Comparison with Conventional Methods." Antioxidants 8, no. 8 (2019): 248. http://dx.doi.org/10.3390/antiox8080248.

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The aim of this study was to optimize the ultrasound-assisted extraction of phenolic compounds from black locust (Robiniae pseudoacaciae) flowers using central composite design. The ethanol concentration (33–67%), extraction temperature (33–67 °C), and extraction time (17–33 min) were analyzed as the factors that impact the total phenolic content. The liquid-to-solid ratio of 10 cm3 g−1 was the same during extractions. The optimal conditions were found to be 59 °C, 60% (v/v) ethanol, and extraction time of 30 min. The total phenolic content (TPC = 3.12 gGAE 100 g−1 dry plant material) and anti

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Gómez-Cruz, Irene, María del Mar Contreras, Florbela Carvalheiro, et al. "Recovery of Bioactive Compounds from Industrial Exhausted Olive Pomace through Ultrasound-Assisted Extraction." Biology 10, no. 6 (2021): 514. http://dx.doi.org/10.3390/biology10060514.

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Exhausted olive pomace (EOP) is the main agro-industrial waste of the olive pomace extracting industries. It contains phenolic compounds and mannitol, so the extraction of these bioactive compounds should be considered as a first valorization step, especially if EOP is used as biofuel. Therefore, EOP was subjected to bath-type ultrasound-assisted extraction (UAE), and the effects of the acetone concentration (20–80%, v/v), solid load (2–15%, w/v), and extraction time (10–60 min) on the extraction of antioxidant compounds were evaluated according to a Box–Behnken experimental design. By means o

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Malasari, Nur, RTM Sutamihardja, and Amry Syawaalz. "UJI SIFAT FISIKA-KIMIA DAN IDENTIFIKASI FENIL ETIL ALKOHOL MINYAK ATSIRI BUNGA MAWAR HASIL EKSTRAKSI PELARUT." JURNAL SAINS NATURAL 7, no. 2 (2019): 91. http://dx.doi.org/10.31938/jsn.v7i2.258.

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Test of Physical and chemical Properties and Identification of Phenyl Ethyl Alcohol of Essential Oil Roses from Solvent ExtractionThe technology of extraction of roses oil currently is developed in small scale industries through distillation. However, this technology has many disadvantages. To overcome these obstacles, it is necessary to do research by using solvent extraction vapor (solvent extraction).This study was conducted to determine the type of solvent and the right ratio of solvent to obtain the highest "concrete" and "absolute" yields on the extraction of roses. The solvents chosen i

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Nazlić, Marija, Valerija Dunkić, Mia Dželalija, et al. "Evaluation of Antiphytoviral and Antibacterial Activity of Essential Oil and Hydrosol Extracts from Five Veronica Species." Agriculture 13, no. 8 (2023): 1517. http://dx.doi.org/10.3390/agriculture13081517.

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Agricultural production without pollution is possible using bioactive plant compounds, which include essential oils as important substances of plant origin. The aim of this study was to evaluate the antiphytoviral and antibacterial potentials of lipid (essential oil, EO) and water (hydrosol, HY) extracts from five Veronica species (Plantaginaceae) obtained by Clevenger hydrodistillation (HD) and microwave-assisted extraction (MAE), with analysis by gas chromatography coupled with mass spectrometry. The antiphytoviral activities of both extracts were tested on local host plants infected with to

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Krishnamoorthy, Rambabu, Abdul Hai, and Fawzi Banat. "Subcritical Water Extraction of Mango Seed Kernels and Its Application for Cow Ghee Preservation." Processes 11, no. 5 (2023): 1379. http://dx.doi.org/10.3390/pr11051379.

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Mango seed kernel (MSK) extract contains phytochemicals, bioactives, and fatty acids that are of interest to food and nutritional scientists. The subcritical water extraction process (SCWE) can be effective in extracting valuable bioactives from MSK. In this study, SCWE was investigated and optimized for the extraction of bioactives from MSK using Box–Behnken experimental design. The extract yield was examined as a function of various process variables, namely, solvent-to-feed (L/S) ratio, extraction temperature (T), and extraction time (t). Analysis of variance (ANOVA) for experimental result

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Cho, Ha Seong, Gwang Deok Park, Ibukunoluwa Fola Olawuyi, Jong Jin Park, and Won Young Lee. "Kinetic modeling of ultrasound-assisted extraction of dieckol from Ecklonia cava using a choline chloride-based natural deep eutectic solvent." Food Science and Preservation 31, no. 5 (2024): 735–44. http://dx.doi.org/10.11002/fsp.2024.31.5.735.

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Natural deep eutectic solvents (NADES) are promising green and sustainable solvents for efficient extraction of bioactive compounds. We employed ultrasound-assisted extraction (UAE) to extract dieckol from Ecklonia cava (EC) using choline chloride-based NADES. Eight different NADES (comprising sugars, alcohols, and organic acids) and a conventional solvent were screened to select the best eutectic solvent for dieckol extraction. Among the organic acid-based NADES, choline chloride–acetic acid (CCAC; 1:1 molar ratio with a 50% [v/v] water content) exhibited a higher dieckol content (31.45 mg/g)

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Dejkajorn, Chanatip, Panawan Suttiarporn, Hussanai Sukkathanyawat, Kittisak Wichianwat, Saichon Sriphan, and Thanarak Srisurat. "Optimization of Microwave-Assisted Extraction of Residual Soybean Oil from Spent Bleaching Earth." E3S Web of Conferences 302 (2021): 01009. http://dx.doi.org/10.1051/e3sconf/202130201009.

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Spent bleaching earth (SBE) which is generated from bleaching process is a valuable industrial waste of edible vegetable oil production because of residual edible vegetable oil absorbed. The residual oil in spent bleaching earth can be recovered and reused for application in the industries such as the production of biodiesel and lubricant. Currently, microwave-assisted extraction (MAE) technique is widely used because this method has a shorter extraction time and less solvent consumption when compared with traditional methods. In this study, MAE combined with solvent reflux was optimized using

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Polanowska, Katarzyna, Rafal Łukasik, Maciej Kuligowski, and Jacek Nowak. "Development of a Sustainable, Simple, and Robust Method for Efficient l-DOPA Extraction." Molecules 24, no. 12 (2019): 2325. http://dx.doi.org/10.3390/molecules24122325.

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l-3,4-dihydroxyphenylalanine (l-DOPA) is a medically relevant compound in Parkinson’s disease therapy. Several extraction methods of l-DOPA from beans, including velvet and faba beans, have been described in the literature. However, these methods require the use of strong acids, long extraction times, or complex downstream processing, which makes the extraction of l-DOPA expensive and energy-demanding, limiting its industrial application. In addition, the stability of l-DOPA during the extraction process is critical, further complicating the extraction of adequate amounts of this amino acid. T

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Ibrahim, Salis, Regina Santos, and Steve Bowra. "Optimisation of Organic Solvent Mediated Solubilisation of Apple Pomace Polyphenolic Compounds Using Response Surface Methodologies." International Journal of Chemistry 11, no. 2 (2019): 1. http://dx.doi.org/10.5539/ijc.v11n2p1.

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Polyphenolic compounds extraction from industrial apple pomace was optimised by applying design of experiments (DoE) and surface response methodology using the Central Composite Rotatable Design (CCRD). The degree solubilisation and the yield of total phenolic content from the apple pomace using organic solvents was shown to be influenced by process parameters including solvent type, solvent concentration, temperature, apple pomace to solvent ratio, and extraction time (residency time). Optimal conditions of extracting phenolic compounds were as follows: acetone concentration, 65 % (v/v); soli

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Belghith, Yosra, Imen Kallel, Maxence Rosa, et al. "Intensification of Biophenols Extraction Yield from Olive Pomace Using Innovative Green Technologies." Biomolecules 13, no. 1 (2022): 65. http://dx.doi.org/10.3390/biom13010065.

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Olive pomace is the main by-product generated by the olive oil production process. Although toxic to the environment, olive pomace is an important source of natural antioxidants due to its high content of phenolic compounds. The aim of the current study is to maximize the extraction yields of the main phenolic compounds present in olive pomace using innovative green technologies. For this purpose, the present work is divided into two parts. The first part is based on a solubility study of targeted phenolic compounds in various ethanol/water ratios at two different temperatures (20 °C and 50 °C

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Patel, Sanjaykumar J. "Solar Cell Parameters Extraction Using Rao-3 algorithm." International Scientific Journal of Engineering and Management 04, no. 06 (2025): 1–9. https://doi.org/10.55041/isjem04689.

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The extraction of solar cell parameters is a subject of significant interest, as it plays a crucial role in predicting the performance and behavior of solar cells, as well as in evaluating their efficiency. This paper presents a simple, efficient, and reliable metaheuristic optimization technique, i.e. the Rao-3 algorithm, for extracting five key electrical parameters of a solar cell from a single illuminated current–voltage (I–V) characteristic. An interactive numerical simulation has been developed using LabVIEW as the programming platform to implement the algorithm. The consistency and accu

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Utama, Niko, Erryana Martati, and Harijono Harijono. "Ultrasonic assisted extraction modelling and phytochemicals profiling of bangle rhizome (Zingiber cassumunar Roxb.)." Advances in Food Science, Sustainable Agriculture and Agroindustrial Engineering 8, no. 1 (2025): 474–91. https://doi.org/10.21776/ub.afssaae.2025.008.01.9.

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Zingiber Cassumunar Roxb., locally known as bangle, has pharmacological activities as an antioxidant, anti-inflammatory, anticancer, neuroprotective, and antibacterial. Green technology extractions have more advantages than conventional extraction. Therefore, this study aims to model the extraction conditions of ultrasound-assisted extraction (UAE) using the Box-Behnken design (BBD) response surface method. Extraction of the bangle was performed using an ultrasonic bath with various bangle-to-ethanol ratios (1:15, 1:30, and 1:45 w/v), ethanol concentrations (60, 70, and 80%), and extraction ti

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