Study on the Extraction Technology and Determination of Flavonoids in Crytotaenia japonic

Abstract

Abstract: The flavonoids content in Crytotaenia japonic was determinated by spectrophotometer with rutin as standard material. The analysis results showed that the average content of flavonoids in C. japonic is 4.47%,and the method for determining flavonoids content of C. japonic is simple and useful,meanwhile the determination repeatability is very good. The extraction technology of flavonoids in Crytotaenia japonic was studied by single factor test and L9(34) orthogonal test design method. The optimal conditions of extraction were obtained as follow70% alcohol as solvent,twenty times of volume of extraction reagent as large as the dry weight of C. japonic,the extraction temperature at 70℃ for1.5h,and the extraction being repeated for three times.

Key words: Crytotaenia japonic, total flavonoids, extraction technology

Li-Chang-Sheng, Zhu-Du, DENG Juan, Che-Mei-Xia, Huang-Wen-Wen. Study on the Extraction Technology and Determination of Flavonoids in Crytotaenia japonic[J]. FOOD SCIENCE, 2006, 27(11): 357-360.

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Study on the Extraction Technology and Determination of Flavonoids in Crytotaenia japonic

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