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标题：Experimental studies and Development of Modelling equation of Quercetin from Raphanus Sativus using Soxhlet Extractor
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作者：Meena Vangalapati ; Gnana Madhuri Y ; Vidya Sagar T 等
期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2014
卷号：3
期号：5
页码：12214
出版社：S&S Publications
摘要：The radish (Raphanus sativus) species belongs to Brassicaceae family. D ifferent parts of radish including roots, seeds and leaves are used for medicinal purposes. The objective of this work was extraction of phenolic co mpounds from radish and to develop a modelling eq uation to describe quantitatively the extraction phenomena. The present study was intended to optimization of extraction of Quercetin and its various physico-chemical parameters have been studied. For the extraction of Quercetin the optimum results were observed for the effect of different solvents, soaking time, extraction t ime with hexane, particle size, different solvent percentages, different volumes of hexane with methanol as solvent and pH where the results showed up are respectively methanol, 1day, 1 hr, 200 particle mesh size, 80% (v/v), 1:1 ratio and 6.0. The highest Quercetin concentration for optimized condition was 45μg/ml. Soxhlet extraction was carried out using methanol for different extraction time periods to verify the mathematical model proposed in this work. The final form of proposed model was Es= 1.525(1 -e -0.9033t ) for Quercetin, where Es = yield extract (mg of quercetin/gm of dried sample) and t= extraction time (min). The model sho wed good agreement with the experimental data by generating average absolute relative deviation ( AARD) of about 1.217+- 13.23% mg of quercetin per 1 gm of dried sample.
关键词：Radish; Quercetin; Soxhlet extractor; modelling equation; methanol