Extraction process of cucurbitacin E

Abstract

The invention discloses an extraction process of cucurbitacin E; the extraction process comprises the following steps: 1) sending muskmelon pedicels into a pulverizer, and pulverizing to obtain pulverized muskmelon pedicels; 2) refluxing and extracting the pulverized muskmelon pedicels with ethanol for twice to obtain an extract liquid; 3) concentrating the extract liquid and separating to obtainan ethyl acetate layer; 4) concentrating the ethyl acetate layer to dry, adding 4 equivalent weight of reduced iron powder and 8 equivalent weight of glacial acetic acid, refluxing for 50-70 min, andseparating to obtain cucurbitacin E. 4 equivalent weight of reduced iron powder and 8 equivalent weight of glacial acetic acid are adopted, a large amount of cucurbitacin B in the muskmelon pedicles is converted into the cucurbitacin E, separation extraction is performed, the extract rate of the cucurbitacin E is greatly improved, the process is simple, and the cost is low.

Description

technical field [0001] The invention relates to a process for extracting cucurbitacin E. Background technique [0002] The molecular formula of cucurbitacin E is C 32 h 44 o 8 , with a molecular weight of 556.69, white powder at normal temperature and pressure, mainly derived from the fruit stem of Cucurbitaceae Melon, soluble in chloroform, slightly soluble in methanol, almost insoluble in water, relatively stable at room temperature , need to be stored in a cool place away from light. [0003] At present, when extracting cucurbitacin E from fruit stems of Cucurbitaceae Melon, the extraction is not thorough enough and the cost is high, which cannot meet the market demand. Contents of the invention [0004] In view of the above problems, the present invention provides a process for extracting cucurbitacin E, which is simple, thorough and low in cost. [0005] The technical scheme adopted in the present invention is: [0006] An extraction process of cucurbitacin E, c...

AI Technical Summary

Problems solved by technology

[0003] At present, when extracting cucurbitacin E from the fruit stem of the genus Cucurbitaceae Melon, the extraction is not thorough enough, the cost is high, and the market demand cannot be met.