Study on technology extracting rosolic acid of Rosa roxbunghii Tratt. pomace

doi:10.14088/j.cnki.issn0439-8114.2021.05.019

Abstract

Abstract: The pomace of Rosa roxburghii Tratt. was used as raw material,based on single factor experiments, the optimal extraction conditions for rosolic acid of Rosa roxbunghii Tratt. pomace by alkali extraction and acid precipitation method were optimized by Box-Behnken design and response surface methodology. The results showed that alkaline solution pH 12, extraction time 120 min, liquid-to-material ratio of 17∶1 （mL∶g）, extraction temperature 73 ℃, extraction frequency 2, under this optimal extraction,the maximum yield of rosolic acid was 0.257% in accordance with the predicted value,indicating that extract parameters had good accuracy and reliability. The acid precipitation condition pH is 2, after extracting twice with 1.0 volume of ethyl acetate, the maximum yield of rosolic acid was 3.77%. This method is simple, efficient, energy saving and environmentally friendly, provide a theoretical basis for extracting rosolic acid from the Rosa roxbunghii Tratt. pomace.

Key words: rosolic acid, alkali extraction and acid precipitation method, Rosa roxbunghii Tratt. pomace, response surface optimization

CLC Number:

R284.2

LIU Ying-xiao, YUAN Xiao-hong. Study on technology extracting rosolic acid of Rosa roxbunghii Tratt. pomace[J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(5): 103-107.

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