NDLI: Optimization of Microwave-Assisted Extraction of Ursolic Acid in Residues of Eriobotrta Japonica

Content Provider	IEEE Xplore Digital Library
Author	Haili Dong Hanjun Ma
Copyright Year	2008
Description	Author affiliation: Dept. of Chem. Eng., Huainan Union Univ., Huainan (Haili Dong)
Abstract	The optimum process of extracting ursolic acid from Eriobotrya japonica residues by microwave-assisted extraction (MAE) was studied. The optimum extraction process was optimized with orthogonal test. Experiments were made by using L9(34) orthogonal design with extractive yield of ursolic acid as index, investigating the influence of grinding degree, MAE power, MAE time, and the ratio of solid to liquid. Optimum extraction conditions were determined as follows: 95% ethanol, MAE 350 W, extraction time 190s, ratio of solid to liquid 1:10 (g:mL), extracting for three times. The yield of ursolic acid acid was 0.89%. The MAE method has higher yield, shorter extraction time and higher purity compared to Soxhlet extraction method.
Starting Page	4519
Ending Page	4522
File Size	172981
Page Count	4
File Format	PDF
ISBN	9781424417476
DOI	10.1109/ICBBE.2008.289
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-05-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electromagnetic heating Solvents Liquids Chemistry Ethanol Microwave ovens Microwave devices Solids Educational institutions Testing
Content Type	Text
Resource Type	Article

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Optimization of Microwave-Assisted Extraction of Ursolic Acid in Residues of Eriobotrta Japonica