A method for the extraction of bioactive lignans from sesame oil with a high yield and purity

摘要

A method for the extraction of bioactive lignans from sesame oil with a high yield and purity, and this method comprising the steps of:(a) treating the sesame oil in a sequential, up to 6 – 10 - purposes of extraction with methanol in a 1: 1 to 1: 1,2 ratio (w / v) at a temperature in the range from 60 to 80°C. for a period of from 60 to 100 minutes, wherein each extraction 9 to 10 minutes and the first and the following oil phase is extracted with fresh methanol and the oil phase after the last extraction is stored separately,(b) concentration of the methanol phase separated from the abovementioned sequential extractions has been obtained under vacuum and their dispersion in petroleum ether in a ratio of 1: 0,4 to 1: 0,6 (v / v),(c) cooling of the abovementioned dispersion mixture at a temperature of from 4 to 10°C. for a period of 24 to 48 hours, subsequent filtration and washing of the resulting crystals with..