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Journal articles on the topic 'Extraction comparison'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Zhang, Xiaoqi, Paul L. Bishop, and Brian K. Kinkle. "Comparison of extraction methods for quantifying extracellular polymers in biofilms." Water Science and Technology 39, no. 7 (1999): 211–18. http://dx.doi.org/10.2166/wst.1999.0361.

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Five commonly used extraction methods - regular centrifugation, EDTA extraction, ultracentrifugation, steaming extraction and regular centrifugation with formaldehyde (RCF) - were selected to study their effectiveness and repeatability in extracting extracellular polymeric substances (EPS) from aerobic/sulfate reducing and nitrifying/denitrifying biofilm samples. Biofilm EPS extraction yields were represented by carbohydrate and protein concentrations; the amount of cell lysis during the extractions was indicated by DNA concentration. The results showed that analyzing wash waters is essential

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2

Chenchev, Lyubomir I., Vasilena V. Ivanova, Ivan L. Chenchev, and Hristo I. Daskalov. "Minimally invasive extractions with physics forceps – clinical evaluation and comparison." Folia Medica 66, no. 2 (2024): 235–42. http://dx.doi.org/10.3897/folmed.66.e122678.

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Introduction: Tooth extraction is still one of the most common dental procedures, routinely performed for a variety of reasons. Tooth extraction forceps and elevators are well-known extraction instruments which have been the standard in tooth extraction procedures for well over a hundred years. Physics forceps are one possible alternative, aiming to perform less traumatic and more predictable extractions. Aim: The aim of study was to compare the effectiveness of physics forceps as an alternative, less traumatic, tool to the conventional extraction forceps. Materials and methods: All patients i

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Chenchev, Lyubomir, Vasilena Ivanova, Krikor Giragosyan, Tasho Gavrailov, and Ivan Chenchev. "Minimally Invasive Extraction System Benex—Clinical Evaluation and Comparison." Dentistry Journal 12, no. 8 (2024): 234. http://dx.doi.org/10.3390/dj12080234.

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Tooth extraction is one of the oldest and most well-known surgical procedures in dental medicine. It is still routinely performed by general practitioners and dental undergraduates. The Benex extraction system allows for the extraction of teeth in a vertical direction, which avoids most trauma against surrounding alveolar bone and soft tissues. The study included 56 patients who were recruited from the Department of Oral Surgery, Medical University—Plovdiv. The patients were split into two groups of 28 patients—Group I (control group) and Group II (study group). For each group, the success of

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Sheu, Hwey-Lin, Shui-Ping Chang, and Yi-Chao Lee. "Comparison of EPS Extraction Efficiences from Cladophora Glomerata by Two Chemical Extraction Methods." International Journal of Chemical Engineering and Applications 10, no. 4 (2019): 126–29. http://dx.doi.org/10.18178/ijcea.2019.10.4.754.

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Zhang, Leiyan, Hongqiang Ren, and Lili Ding. "Comparison of extracellular polymeric substances (EPS) extraction from two different activated sludges." Water Science and Technology 66, no. 7 (2012): 1558–64. http://dx.doi.org/10.2166/wst.2012.295.

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The characteristics of extracellular polymeric substances (EPS) extracted with five different extraction protocols from two different activated sludges were studied. The results showed that the major EPS constituent extracted by centrifugation was protein for the sludge in sequencing batch reactor treating chemical wastewater, and nucleic acid for the sludge in moving bed biofilm reactor treating synthetic urban wastewater. The order of EPS extraction amounting from the two sludges was formaldehyde + NaOH &gt; formaldehyde + heating &gt; EDTA &gt; heating &gt; centrifugation. T

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Han, Yan Xia, Gong Nan Wang, Zhao Zhong Shi, and Fang Wang. "Comparison of Microwave Method with Traditional Method to Extract Tea Polyphenols." Advanced Materials Research 933 (May 2014): 183–86. http://dx.doi.org/10.4028/www.scientific.net/amr.933.183.

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In this research, the primary study in extracting technologies of Tea polyphends was finished. On the basis of the water lixiviation by orthogonal optimization method, extraction process of TP by microwave extraction was optimized. The best combined condition of the water lixiviation as follows: liquid-lolid ratio 25:1, extraction temperature 95°C , extraction time 20min,Under this conditions, the yield of TP is 13.993 %.And the best combined condition by microwave extraction: liquid-lolid ratio 35:1, microwave power 750 W, extraction time 18min, and the yield of TP is 20.3023 % through duplic

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Takahashi, Eri, Jérôme Ledauphin, Didier Goux, and Francis Orvain. "Optimising extraction of extracellular polymeric substances (EPS) from benthic diatoms: comparison of the efficiency of six EPS extraction methods." Marine and Freshwater Research 60, no. 12 (2009): 1201. http://dx.doi.org/10.1071/mf08258.

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There is no universal method that can be applied to extract bound extracellular polymeric substances (EPS) from benthic diatoms of intertidal sediments without causing cell lysis. Six extraction methods were tested on a diatom culture of Navicula jeffreyi to establish the best compromise between high yields of carbohydrate extraction and minimum cell lysis. Extraction with distilled water provoked cell lysis (as already known). The five other extraction methods (dowex resin, artificial seawater of half salinity and extractions after pretreatment with gluteraldehyde by three methods: water, dow

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LUZ, ANNY CAROLYNE DA, IRANY RODRIGUES PRETTI, and MARIA DO CARMO PIMENTEL BATITUCCI. "COMPARISON OF RNA EXTRACTION METHODS FOR Passiflora edulis SIMS LEAVES." Revista Brasileira de Fruticultura 38, no. 1 (2016): 226–32. http://dx.doi.org/10.1590/0100-2945-278/15.

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ABSTRACT Functional genomic analyses require intact RNA; however, Passiflora edulis leaves are rich in secondary metabolites that interfere with RNA extraction primarily by promoting oxidative processes and by precipitating with nucleic acids. This study aimed to analyse three RNA extraction methods, Concert™ Plant RNA Reagent (Invitrogen, Carlsbad, CA, USA), TRIzol® Reagent (Invitrogen) and TRIzol® Reagent (Invitrogen)/ice -commercial products specifically designed to extract RNA, and to determine which method is the most effective for extracting RNA from the leaves of passion fruit plants. I

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HARNELLY, ESSY, NITA TAUHIDA, and ISKANDAR ZULKARNAIN SIREGAR. "Comparison of two DNA extraction methods for dry Leaf Dipterocarpaceae." Jurnal Natural 22, no. 3 (2022): 168–72. http://dx.doi.org/10.24815/jn.v22i3.26588.

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DNA extraction is the first step in obtaining high-concentration and high-purity DNA that can use in the subsequent steps. Because the leaf structure is challenging and contains several secondary metabolites that can affect DNA extraction results, DNA extraction on dry leaves of Dipterocarpaceae is considered problematic. This research aims to find a suitable method for extracting DNA from the preserved Dipterocarpaceae leaves. Preserved leaves of Dipterocarpaceae in silica gel will dry up, making them tough to destroy. Perform DNA extraction is generally using CTAB buffers or extraction kits.

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Siregar, A. N., J. A. Ghani, C. H. C. Haron, M. Rizal, Z. Yaakob, and S. K. Kamarudin. "Comparison of oil press for jatropha oil – a review." Research in Agricultural Engineering 61, No. 1 (2016): 1–13. http://dx.doi.org/10.17221/22/2013-rae.

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As petrol will soon be exhausted in the near future, Jatropha is going to be one of the substitute candidates for future biodiesel production. Countries of South-East Asia, such as Malaysia, they are going to start the establishment of Jatropha plantations assuming that Jatropha will be the main resource for biodiesel production. A press is commonly used to extract oils from Jatropha. An oil press can be manually driven or engine-powered. In this paper, we will review some available advances focused on mechanical extraction techniques, covering three types of press for Jatropha oil extraction.

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Sokolnikova, Lidiya, Evgenia Egorova, and Daria Bulmakova. "Comparison of DNA extraction methods from soil samples." BIO Web of Conferences 113 (2024): 04007. http://dx.doi.org/10.1051/bioconf/202411304007.

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This paper reviews and compares various methods of extracting total DNA from soil samples using laboratory materials and reagents. The methods of DNA extraction were analyzed in different modifications and combinations with each other and with pretreatment of soil samples. It is shown that for effective DNA extraction, pretreatment of samples with calcium salts is necessary, in particular, the addition of CaCl2 to the extraction buffer to precipitate humic acids. DNA was extracted from the soil by all the methods, but the greatest amount of DNA was observed using a technique based on ethylened

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Dunn, Jodie L., Johanna D. Turnbull, and Sharon A. Robinson. "Comparison of solvent regimes for the extraction of photosynthetic pigments from leaves of higher plants." Functional Plant Biology 31, no. 2 (2004): 195. http://dx.doi.org/10.1071/fp03162.

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The relative efficiency of methanol- and acetone-based solvents for the extraction of pigments from photosynthetic tissues of plant was compared, together with the advantages of multiple versus single extractions. The two commonly employed triple acetone extractions (100 : 80 : 80% and 85 : 100 : 100%) performed comparably for most pigments and for all plant species tested. Single extractions with either 96% methanol or 85% acetone failed to extract the more hydrophobic pigments, especially β-carotene. We conclude that multiple extractions that combine pure and aqueous (80–85%) acetone are pre

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MCGARRY, KENNETH, STEFAN WERMTER, and JOHN MACINTYRE. "THE EXTRACTION AND COMPARISON OF KNOWLEDGE FROM LOCAL FUNCTION NETWORKS." International Journal of Computational Intelligence and Applications 01, no. 04 (2001): 369–82. http://dx.doi.org/10.1142/s1469026801000305.

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Extracting rules from RBFs is not a trivial task because of nonlinear functions or high input dimensionality. In such cases, some of the hidden units of the RBF network have a tendency to be "shared" across several output classes or even may not contribute to any output class. To address this we have developed an algorithm called LREX (for Local Rule EXtraction) which tackles these issues by extracting rules at two levels: hREX extracts rules by examining the hidden unit to class assignments while mREX extracts rules based on the input space to output space mappings. The rules extracted by our

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14

Rukiah, Bunga Ayub, Amalia Oeripto, and Nurhayati Harahap. "A Comparison of class I malocclusion treatment outcomes with and without extractions using an ABO grading system for dental casts and radiographs." Dental Journal (Majalah Kedokteran Gigi) 50, no. 3 (2018): 144. http://dx.doi.org/10.20473/j.djmkg.v50.i3.p144-148.

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Background: Class I malocclusion can be treated with or without resort to extraction. However, despite the indications, a controversy is still ongoing as to whether one option is preferable to another. One of the most frequent controversies centers on whether treatment involving extractions will produce superior results than treatment not culminating in extraction. Purpose: This study aimed to compare the results of treating class I malocclusion with extractions and those without extraction using an ABO grading system. Methods: Comparing ABO scores in patients’ dental casts and radiographs wit

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15

Marchi, Giuliano, Luiz Roberto Guimarães Guilherme, Andrew C. Chang, and Clístenes Williams Araújo do Nascimento. "Heavy metals extractability in a soil amended with sewage sludge." Scientia Agricola 66, no. 5 (2009): 643–49. http://dx.doi.org/10.1590/s0103-90162009000500009.

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Few investigations have been carried out about the comparison of desorption rate and amount of heavy metals extracted successively by organic acid mixtures mimicking the rhizosphere and routine extractants in sewage sludge-amended soils. Extractions of Zn, Cd, Ni, Cr, and Cu were performed in samples of a sewage sludge-amended soil using seven extractants: four organic acid mixtures and three routine extractants (DTPA, Mehlich-I, and ammonium acetate). Results from single pass extractions, in which the extractable metal contents were determined by simply extracting the soil a single time, as w

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16

Vaise Malekshahi, Ziba, Latif Mousavi Gargari Seyed, and Hassan Shirazi Mohamad. "Comparison of IgY extraction methods." Clinical Biochemistry 44, no. 13 (2011): S138. http://dx.doi.org/10.1016/j.clinbiochem.2011.08.334.

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17

Cheng, Shouyun, Kaavya Rathnakumar, and Sergio I. Martínez-Monteagudo. "Extraction of Dairy Phospholipids Using Switchable Solvents: A Feasibility Study." Foods 8, no. 7 (2019): 265. http://dx.doi.org/10.3390/foods8070265.

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A tertiary amine (N,N-dimethylcyclohexylamine, CyNMe2) was used as a switchable hydrophilicity solvent (SHS) for extracting phospholipids (PLs) from raw cream (RC), buttermilk (BM), concentrated buttermilk (CBM), and beta-serum (BS). The SHS extractions were performed with varying solvent–sample weight ratio at room temperature. The extracted PLs using CyNMe2 were recovered by bubbling CO2 at atmospheric pressure, switching the CyNMe2 into its respective salt. For comparison, the PLs were also extracted using Folch (FE) and Mojonnier (ME) extraction. The extraction efficiency of SHS varied fro

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18

Chen, Zhi Ling, Jian Ping Chao, Bing Kun Wang, Hui Lin Cao, Song Wang, and Chi Lin. "Study on Extraction Technology of the Pigment from Spinach." Advanced Materials Research 518-523 (May 2012): 3931–37. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.3931.

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spinach contains a variety of plant pigments, high lutein content, which makes the research of spinach pigment extracting research special significance. Supercritical CO2fluid extraction food industry is a new extraction and isolation technique; microwave assisted extraction technology has the potential to become future food industrialization production of the leading. The UV-vis spectrophotometric analysis, parallel experimental method to determine the optimum process conditions of extracting pigment from spinach. For supercritical CO2extraction: ethanol (as extractant) is 250ml, extraction p

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Zou, Wei, Chris Lusk, Dale Messer, and Ralph Lane. "Fat Contents of Cereal Foods: Comparison of Classical with Recently Developed Extraction Techniques." Journal of AOAC INTERNATIONAL 82, no. 1 (1999): 141–50. http://dx.doi.org/10.1093/jaoac/82.1.141.

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Abstract Eight cereal products ranging from a fat-free ready- to-eat (RTE) cereal (frosted flakes) to a full-fat high- ratio cake mix were subjected to analyte separation by anhydrous diethyl ether extraction (EE), acid hydrolysis/mixed ether extraction (AH), solid-phase extraction (SPE), and supercritical fluid extraction (SFE) with CO2 and with CO2 modified with 15% ethanol (SFEmod). Gravimetric analyses of extracts indicated higher (P ≤ 0.05) crude fat values by AH than by EE, SFE, or SFEmod. Extractions followed by fatty acid methyl ester analysis also produced higher (P ≤ 0.05) triglyceri

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Xu, Huan, Zhanhao Zhang, Xiaodong Yu, et al. "Targeted Training Data Extraction—Neighborhood Comparison-Based Membership Inference Attacks in Large Language Models." Applied Sciences 14, no. 16 (2024): 7118. http://dx.doi.org/10.3390/app14167118.

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A large language model refers to a deep learning model characterized by extensive parameters and pretraining on a large-scale corpus, utilized for processing natural language text and generating high-quality text output. The increasing deployment of large language models has brought significant attention to their associated privacy and security issues. Recent experiments have demonstrated that training data can be extracted from these models due to their memory effect. Initially, research on large language model training data extraction focused primarily on non-targeted methods. However, follo

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Wulandari, Yustina Wuri, Supriyadi Supriyadi, and Chairil Anwar. "Comparison between Hydrodistillation with Steam Explosion and Conventional Hydrodistillation in Kaffir Lime Oil Extraction." agriTECH 39, no. 4 (2019): 306. http://dx.doi.org/10.22146/agritech.38497.

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Steam explosion was proposed as a pretreatment method to accelerate the hydrodistillation (SE-HD) of kaffir lime leaves. This research aimed to compare SE-HD and conventional hydrodistillation (HD) in terms of extraction yield, extraction time, chemical composition, and essential oil quality. The extraction of kaffir lime oil with SE-HD was superior to HD with regard to extraction time (35 min. vs 120 min.) and extraction yield (1.386% vs 1.182%). The chemical composition and the quality of the extracted essential oil from both methods were quite similar, indicating the absence of adverse infl

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Bajer, Tomáš, Petra Bajerová, Daniel Kremr, Aleš Eisner, Martin Adam, and Karel Ventura. "Comparison of Two Ultrasonic Systems with Different Settings for Extraction of Capsaicinoids from Chili Peppers." International Journal of Food Engineering 12, no. 6 (2016): 567–76. http://dx.doi.org/10.1515/ijfe-2015-0347.

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Abstract Two ultrasonic systems were compared with different settings for extraction of capsaicinoids (capsaicin, dihydrocapsaicin and nordihydrocapsaicin) from chili peppers. The first system was ultrasonic homogenizer using an ultrasonic probe operating at a working frequency of 20 kHz, with variable setting of power output. The second one was ultrasonic cleaner operating at a working frequency of 35 kHz, with fixed power output of 50 W. Determination of the optimum extraction procedures was performed by comparison of the extraction yields. Content of capsaicinoids was determined by high-per

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Müller, Frank-Michael C., Katherine E. Werner, Miki Kasai, Andrea Francesconi, Stephen J. Chanock, and Thomas J. Walsh. "Rapid Extraction of Genomic DNA from Medically Important Yeasts and Filamentous Fungi by High-Speed Cell Disruption." Journal of Clinical Microbiology 36, no. 6 (1998): 1625–29. http://dx.doi.org/10.1128/jcm.36.6.1625-1629.1998.

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Current methods of DNA extraction from different fungal pathogens are often time-consuming and require the use of toxic chemicals. DNA isolation from some fungal organisms is difficult due to cell walls or capsules that are not readily susceptible to lysis. We therefore investigated a new and rapid DNA isolation method using high-speed cell disruption (HSCD) incorporating chaotropic reagents and lysing matrices in comparison to standard phenol-chloroform (PC) extraction protocols for isolation of DNA from three medically important yeasts (Candida albicans, Cryptococcus neoformans, andTrichospo

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Ji, Yu Bin, and Bo Yang. "Preliminary Study on Extracting Technique and Biological Activity of Fucoidin in Undaria pinnatifida." Advanced Materials Research 183-185 (January 2011): 887–90. http://dx.doi.org/10.4028/www.scientific.net/amr.183-185.887.

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To investigate extracting technique and potential biological activity of fucoidin in Undaria pinnatifid, a kind of marine organisms. Factors such as solid-liquid ratio (times), time of extraction (min) and temperature of extraction (°C) were chosen to be investigated to examine the best extracting technique. 50 mice were randomed to negative comparison group, positive comparison group and experiment groups. Mice were inoculated tumor stock S180. The negative comparison group were administrated with physiological saline, positive comparison group administrated with astragalus polyose(50mg/(kg•d

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Orlowski, Natalie, Lutz Breuer, Nicolas Angeli, et al. "Inter-laboratory comparison of cryogenic water extraction systems for stable isotope analysis of soil water." Hydrology and Earth System Sciences 22, no. 7 (2018): 3619–37. http://dx.doi.org/10.5194/hess-22-3619-2018.

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Abstract. For more than two decades, research groups in hydrology, ecology, soil science, and biogeochemistry have performed cryogenic water extractions (CWEs) for the analysis of δ2H and δ18O of soil water. Recent studies have shown that extraction conditions (time, temperature, and vacuum) along with physicochemical soil properties may affect extracted soil water isotope composition. Here we present results from the first worldwide round robin laboratory intercomparison. We test the null hypothesis that, with identical soils, standards, extraction protocols, and isotope analyses, cryogenic e

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Zhi, Keke, Jinwang Duan, Jiarui Zhang, Lianting Huang, Lianghui Guo, and Lulu Wang. "Progress and Prospect of Ion Imprinting Technology in Targeted Extraction of Lithium." Polymers 16, no. 6 (2024): 833. http://dx.doi.org/10.3390/polym16060833.

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Ion Imprinting Technology (IIT) is an innovative technique that produces Ion-Imprinted polymers (IIPs) capable of selectively extracting ions. IIPs exhibit strong specificity, excellent stability, and high practicality. Due to their superior characteristics, the application of IIPs for lithium resource extraction has garnered significant attention. This paper discusses the following aspects based on existing conventional processes for lithium extraction and the latest research progress in lithium IIPs: (1) a detailed exposition of existing lithium extraction processes, including comparisons an

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Guo, Jie Zhi, Hao Guo Tang, Hong Juan Yao, and Yan Mei Zhang. "Research on the Extraction and Purification of Dihydromyricetin from Ampelopsis grossedentata." Advanced Materials Research 1033-1034 (October 2014): 738–43. http://dx.doi.org/10.4028/www.scientific.net/amr.1033-1034.738.

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Extracting dihydromyricetin from Ampelopsis grossedentata by water extraction method. The orthogonal test and single factor experiment were used to optimize the best extraction condition. The ratio of liquid and material is 20:1, extraction time is 90min, extraction temperature is 90°C,holding time is 1d. The results of comparison between two purification methods show: Purify with acetone and recrystallization with water is better. The purity of dihydromyricetin is high to 98%, recovery rate was 59.2%.

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Dundas, Nicola, N. Kristine Leos, Midori Mitui, Paula Revell, and Beverly Barton Rogers. "Comparison of Automated Nucleic Acid Extraction Methods with Manual Extraction." Journal of Molecular Diagnostics 10, no. 4 (2008): 311–16. http://dx.doi.org/10.2353/jmoldx.2008.070149.

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Dilek Tepe, Hafize, and Fatma Doyuk. "Comparison of Microwave, Ultrasonic Bath and Homogenizer Extraction Methods on the Bioactive Molecules Content of Green Tea (Camellia Sinensis) Plant." Celal Bayar Üniversitesi Fen Bilimleri Dergisi 19, no. 1 (2023): 87–95. https://doi.org/10.18466/cbayarfbe.1169751.

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In this study, the effects of three different extraction methods on the antioxidant capacity, phenolic component, volatile organic molecule and amino acid contents of green tea (Camellia sinensis) leaves were compared. Microwave digestion assisted extraction (MDAE), ultrasonic bath assisted extraction (UBAE) and homogenizer assisted extraction (HAE) methods were used as extraction methods. When the MDAE, UBAE and HAE extraction methods were compared according to the ferric reducing antioxidant power (FRAP) antioxidant activity results, 51.95, 50.9 and 13.8 TE/g dry weight (DW) results were obt

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Lu, Meng-Shan, Long-Li Lai, and Yung-Pin Tsai. "COMPARISON OF OPTIMUM CONDITIONS WHEN EXTRACTING PHAS FROM DIFFERENT WASTE SLUDGE SOURCES." Journal of Environmental Engineering and Landscape Management 26, no. 3 (2018): 190–94. http://dx.doi.org/10.3846/16486897.2017.1411271.

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Biological wastewater treatment plants produce great amounts of sludge daily. It is a very big loading (cost) for treating the waste sludge. Polyhydroxyalkanoates are a family of polyhydroxyesters. The technologies of extracting PHAs from wasted sewage sludges of municipal wastewater, fermentation industry and husbandry were developed in the study. In the NaOCl/SDS extraction technology, the concentration of NaOCl and liquid-solid ratio are two essential factors directly influencing extraction efficiency. The experimental results verified under the optimal conditions for extracting PHAs, the c

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Rodrigues, Vítor H., Marcelo M. R. de Melo, Inês Portugal, and Carlos M. Silva. "Extraction of Added-Value Triterpenoids from Acacia dealbata Leaves Using Supercritical Fluid Extraction." Processes 9, no. 7 (2021): 1159. http://dx.doi.org/10.3390/pr9071159.

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Forestry biomass is a by-product which commonly ends up being burnt for energy generation, despite comprising valuable bioactive compounds with valorisation potential. Leaves of Acacia dealbata were extracted for the first time by supercritical fluid extraction (SFE) using different conditions of pressure, temperature and cosolvents. Total extraction yield, individual triterpenoids extraction yields and concentrations were assessed and contrasted with Soxhlet extractions using solvents of distinct polarity. The extracts were characterized by gas chromatography coupled to mass spectrometry (GC-

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Tasic, Aleksandra, Ivana Sredovic-Ignjatovic, Ljubisa Ignjatovic, Marija Ilic, and Malisa Antic. "Comparison of sequential and single extraction in order to estimate environmental impact of metals from fly ash." Journal of the Serbian Chemical Society 81, no. 9 (2016): 1081–96. http://dx.doi.org/10.2298/jsc160307038t.

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The aim of this paper was to simulate leaching of metals from fly ash in different environmental conditions using ultrasound and microwave-assisted extraction techniques. Single-agent extraction and sequential extraction procedures were used to determine the levels of different metals leaching. The concentration of metals (Al, Fe, Mn, Cd, Co, Cr, Ni, Pb, Cu, As, Be) in fly ash extracts were measured by Inductively Coupled Plasma-Atomic Emission Spectrometry. Single-agent extractions of metals were conducted during sonication times of 10, 20, 30, 40 and 50 min. Single-agent extraction with deio

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Oliveira, Rosilene Dos Santos, Juliana Da Silva Rocha, Keren Hapuque Pinheiro, Matheus Mendonça Pereira, and Carlos Eduardo Barão. "Application of an ultrasound process to extract catechins from green tea wastes." Brazilian Journal of Food Research 7, no. 3 (2016): 29. http://dx.doi.org/10.3895/rebrapa.v7n3.3724.

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There is increasing need for industries to develop innovative technologies that in addition to being low cost, are also fast and provide high yields and efficiency, while at the same time avoiding adverse effects in the environment. One technique that conforms to these requirements is the use of ultrasound, which also offers ease of application and can be used in the extraction of compounds from leaves. The aim of the present work was to evaluate the efficiency of ultrasound in extracting catechins from green tea wastes, employing solvents with different polarities: water, acetone, ethanol, me

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NSANGOU, ABDOURAMANE, DOINA SIBIESCU, PIERRE MARCEL ANICET NOAH, et al. "Benchmarking on Aloe vera Gel Extraction." Buletinul Institutului Politehnic din Iași, Secția Chimie și Inginerie Chimică 69, no. 1 (2023): 83–91. https://doi.org/10.5281/zenodo.7767181.

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<em>Aloe vera</em> gel is composed of more than 70% saccharide and polysaccharides is the transparent mucilage contained in the parenchymal cells of the fresh <em>Aloe vera</em> leaf. This study objective was to produce a comparison of a set of extraction methods of <em>Aloe vera</em> in the literature. The methodology used is the synthesis of a set of scientific articles, theses, dissertations dealing with the issue of <em>Aloe vera</em> gel extraction. The databases used are (Science Direct, Google Scholar, and ResearchGate). This work studied 6 types of extractions (traditional extraction,

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Zhang, Fan, Xiaohua Qi, Mingqiang Zou, and Jinfeng Li. "Analysis of Rutin fromLespedeza virgata(Thunb.) DC. by Microwave-Assisted Extraction and Capillary Electrophoresis." Journal of Chemistry 2013 (2013): 1–5. http://dx.doi.org/10.1155/2013/324294.

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A simple and rapid microwave-assisted extraction (MAE) technique was developed for the extraction of rutin fromLespedeza virgata(Thunb.) DC. The influence of four extraction variables on extraction of rutin was discussed. The optimum extraction conditions found were 75% aqueous ethanol, solvent volume to sample weight ratio at 90 : 1, extracting temperature at75°C, and extraction time for 15 min. A comparison was made among MAE, classical maceration, and ultrasonic-assisted extraction (UAE). Yields were determined by high-performance capillary electrophoresis (HPCE). The whole analysis process

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Sukumaran, Aparna, R. Jael Fiona, Beninah Monisha, Noorazleen Zulkifli, Sathyabama Vijayarangan, and P. D. Madan Kumar. "Comparison of perception of pain following orthodontic extraction with oral analgesics over adjuvant herbal patch." Journal of Global Oral Health 3 (June 23, 2020): 18–22. http://dx.doi.org/10.25259/jgoh_5_2020.

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Objectives: Pain that follows extraction of any tooth is an acute, short-lasting (2 h–3 days) pain that reaches its maximum intensity during the early (first 4 h) post-extraction period (Kaur et al., 2016). Pain management postoperatively is essential as it helps to minimize discomfort to the patient, reducing the risk of infection, speeding the recovery period. Although several methods have been used for pain management, no study has been conducted on the efficacy of herbal patch as pain relief method in dental extractions. This present study was conducted to evaluate the effectiveness of her

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Aydinalp, C., and A. V. Katkat. "The comparison of extraction methods for evaluating some heavy metals in polluted soils." Plant, Soil and Environment 50, No. 5 (2011): 212–17. http://dx.doi.org/10.17221/4024-pse.

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The extractability of Cd, Co, Cr, Ni and Pb was evaluated using ammonium chloride, calcium chloride, strontium chloride and DTPA extractants in this research. The eight surface soils were used to assess plant available metals with different extraction methods. The amounts of metal extracted were related to pseudototal contents, determined after microwave digestion using HNO<sub>3</sub>. Quantification of dissolved metals was used by ICP-MS matrix-matched standards. The obtained results indicated a high variability of metal extraction depending on extraction procedure, source of pol

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Zaini, Ahmad Syahmi, Nicky Rahmana Putra, Zuhaili Idham, et al. "Comparison of Alliin Recovery from Allium sativum L. Using Soxhlet Extraction and Subcritical Water Extraction." ChemEngineering 6, no. 5 (2022): 73. http://dx.doi.org/10.3390/chemengineering6050073.

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Garlic (Allium sativum L.) is an herbaceous plant and is recognised for its numerous medicinal and culinary properties, and it is used in diverse food preparations for its characteristic flavour and aroma. High alliin content increases the formation of allicin, a bioactive compound of garlic. Therefore, this research aimed to compare different extraction methods for garlic (Allium sativum L.) between subcritical water extraction (SWE) and Soxhlet extraction to obtain a high extraction yield and alliin content. The SWE conditions were 120 °C and 180 °C temperatures and 2 mL/min and 6 mL/min flo

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Vandenberghe, S., D. M. M. P. Schreurs, G. Carchon, B. K. J. C. Nauwelaers, and W. De Raedt. "Characteristic impedance extraction using calibration comparison." IEEE Transactions on Microwave Theory and Techniques 49, no. 12 (2001): 2573–79. http://dx.doi.org/10.1109/22.971652.

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Wu, Jee-cheng, and Gwo-chyang Tsuei. "Comparison of hyperspectral endmember extraction algorithms." Journal of Applied Remote Sensing 7, no. 1 (2013): 073525. http://dx.doi.org/10.1117/1.jrs.7.073525.

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Stanišić, Svetlana, Ljubiša Ignjatović, Dragan Manojlović, and Biljana Dojčinović. "The comparison of sample extraction procedures for the determination of cations in soil by IC and ICP-AES." Open Chemistry 9, no. 3 (2011): 481–91. http://dx.doi.org/10.2478/s11532-011-0031-9.

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AbstractThis paper presents the extraction of cations from a soil sample, type ranker on serpentinite, in deionized water, by use of three different extraction techniques. The first extraction technique included the use of a rotary mixer, the second technique involved the use of a microwave digestion system with different extraction temperatures, and the third technique employed an ultrasonic bath with different extraction times. Ion chromatography was used for determining the concentration of Li, Na, K, Ca, Mg and ammonium ions in soil extracts with subsequent determination of concentrations

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Ramadan, K., S. Nader, and L. Mokrani. "COMPARISON OF SEVERAL EXTRACTION METHODS OF BIOMATERIALS (BY WATER) FROM SIX CITRUS SPECIES PEELS." Azerbaijan Chemical Journal, no. 3 (August 21, 2024): 102–13. http://dx.doi.org/10.32737/0005-2531-2024-3-102-113.

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Citrus species have interest from many researchers for a long time, due to their wide distribution and the diversity in of their chemical composition. On the other hand, it is very important to study and to consistently improve extraction methods in order to increase their efficiency. Several extraction methods based on six citrus species peels have been studied by comparing total yields and concentrations of some bio-compounds (phenols, carbohydrates, proteins and pigments), as well as the antioxidant activity. Extraction methods significantly differed in their results, due to the differences

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Cid-Ortega, Sandro, José Alberto Monroy-Rivera, and Óscar González-Ríos. "Extraction of Kaempferitrin and Astragalin from Justicia Spicigera by Supercritical Fluid Extraction and Its Comparison with Conventional Extraction." Journal of Food Engineering and Technology 10, no. 2 (2021): 35–44. http://dx.doi.org/10.32732/jfet.2021.10.2.35.

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A study of supercritical fluid CO2 extraction of kaempferitrin (KM) and astragalin (KG) from Justicia spicigera (muicle) was conducted. A 33 Box-Behnken design was used to analyze the effects of pressure (200-300 bar), temperature (40-60° C), and co-solvent flow rate (0.5-1.0 mL/min). The highest KM and KG concentration were achieved at a pressure of 300 bar, a temperature of 60° C, and co-solvent flow rate of 1.0 mL/min (ethanol 99.5 %), with a constant CO2 flow rate of 5 mL/min and extraction time of 180 min. Under these conditions, the experimental values for KM and KG (115.08±2.81 and 56.6

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Begum, Dr R. Mangai, and J. S. Baruni. "Comparative Analysis on Automatic Keyphrase Extraction (AKPE) Techniques." INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 08, no. 07 (2024): 1–6. http://dx.doi.org/10.55041/ijsrem36466.

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Abstract— Extracting Keyphrase from the large corpus manually is a tedious task. To overcome this challenging task Automatic Keyphrase Extraction (AKPE) techniques have been used for Keyphrase extraction. Keyphrase extraction is the task of automatically selecting a small set of phrases that best describe a given free text document. Keyphrase constitutes a succinct conceptual summary of a document, which is very useful in digital information management systems for semantic indexing, faceted search, document clustering, and classification. This paper contains a brief description of automatic Ke

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Tlustoš, Pavel, Jiřina Száková, Alena Stárková, and Daniela Pavlíková. "A comparison of sequential extraction procedures for fractionation of arsenic, cadmium, lead, and zinc in soil." Open Chemistry 3, no. 4 (2005): 830–51. http://dx.doi.org/10.2478/bf02475207.

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AbstractTwelve soil samples differing in physicochemical properties and total element contents were extracted by three sequential extraction procedures to determine As, Cd, Pb, and Zn bound to individual soil fractions and are defined by individual operational procedures. In the case of arsenic, two additional sequential extraction schemes were designed entirely for fractionation of soil containing arsenic were tested. The results confirmed that determination of element proportions bound to individual soil fractions is strongly dependent on the extracting agent and/or procedure applied within

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Titze, Ingo R., and Haixiang Liang. "Comparison of F o Extraction Methods for High-Precision Voice Perturbation Measurements." Journal of Speech, Language, and Hearing Research 36, no. 6 (1993): 1120–33. http://dx.doi.org/10.1044/jshr.3606.1120.

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Voice perturbation measures, such as jitter and shimmer, depend on accurate extraction of fundamental frequency (F o ) and amplitude of various waveform types. The extraction method directly affects the accuracy of the measures, particularly if several waveform types (with or without formant structure) are under consideration and if noise and modulation are present in the signal. For frequency perturbation, high precision is defined here as the ability to extract F o to ±0.01% under conditions of noise and modulation. Three F o -extraction methods and their software implementations are discuss

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Rajchasom, Sureewan, Pornsawan Sombatnan, Janyawat Tancharoenrat Vuthijumnonk, and Phanida Suphiratwanich. "Comparison of Different Extraction Methods for Bioactive Compounds from Kao-Kum Doi-Saket (Oryza sativa L.)." ASEAN Journal of Scientific and Technological Reports 26, no. 4 (2023): 38–46. http://dx.doi.org/10.55164/ajstr.v26i4.249961.

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Kao-Kum Doi-Saket is one type of purple rice known for its high content of anthocyanin and its ability to resist free radicals. Anthocyanin extracts can be utilized in various applications, including food coloring, nutritional supplements, natural medicine, and cosmetics. There are several methods for extracting anthocyanin from Kao-Kum Doi-Saket. This research aims to compare the effects of extraction methods, including Conventional extraction (CE), Pulse electric field extraction (PEF), and Ultrasonic assisted extraction (UAE) on total anthocyanin content and antioxidant activity in Kao-Kum

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Hasan, Ali M. "The Efficiency Of Physics Forceps In Comparison To The Conventional Dental Extraction Forceps: A randomized Clinical Trial." Journal of Baghdad College of Dentistry 31, no. 2 (2019): 52–59. http://dx.doi.org/10.26477/jbcd.v31i2.2624.

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Background: Tooth extraction is one of the most commonly performed procedures in dentistry. It is usually a traumatic process often resulting in immediate destruction and loss of alveolar bone and surrounding soft tissues. Various instruments have been described to perform atraumatic extractions which can prevent damage to the paradental structures. The physics forceps is one of those innovations in dental extraction technologies that claim to provide an efficient means for atraumatic dental extractions. Materials and method: A randomized clinical trial was conducted to compare the physics for

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Hongjaisee, Sayamon, Yosita Jabjainai, Suthasinee Sakset, Kanya Preechasuth, Nicole Ngo-Giang-Huong, and Woottichai Khamduang. "Comparison of Simple RNA Extraction Methods for Molecular Diagnosis of Hepatitis C Virus in Plasma." Diagnostics 12, no. 7 (2022): 1599. http://dx.doi.org/10.3390/diagnostics12071599.

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Nucleic acid extraction from biological samples is an important step for hepatitis C virus (HCV) diagnosis. However, such extractions are mostly based on silica-based column methodologies, which may limit their application for on-site diagnosis. A simple, rapid, and field-deployable method for RNA extraction is still needed. In this study, we evaluated the efficacy of four simple RNA extraction methods for the detection of HCV in plasma samples: a silica-membrane-based method, a magnetic-beads-based method, boiling with diethyl pyrocarbonate (DEPC)-treated distilled water, and using a commerci

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Soares, Évelyn Silva de Melo, Camila Celeste Brandão Ferreira Ítavo, Luís Carlos Vinhas Ítavo, et al. "Comparison of analytical methods for the fatty acid profile in ewes’ milk." PLOS ONE 17, no. 2 (2022): e0263071. http://dx.doi.org/10.1371/journal.pone.0263071.

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Studies comparing methodologies for fatty acids are very important, since they can influence the quality and final quantification of the lipid fraction. Objective—to compare different extraction methods for total lipids and to evaluate the effect of these methodologies on the quantitative composition of fatty acids in milk of lactating ewes raised in tropical pastures. The methodologies used were simple direct transesterification, using the HPLC grade organic solvent n-hexane, Bligh; Dyer (cold extraction, extracting mixture proportions 5, 10, and 15 mL in a ratio of 2:1:1 (v/v/v) of chlorofor

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