Study on extraction of flavonoids from Poacynum hendersonii by suporcritical CO2

Authors

SHI Junyou, Qujing Normal University, Qujing, Yunnan 655011, China
JING Nianhua, Qujing Normal University, Qujing, Yunnan 655011, China
LI Caixia, Qujing Normal University, Qujing, Yunnan 655011, China

Abstract

The supercritical CO2 extraction processing of flavonoids was optimized with Poacynum hendersonii leave as raw material. Firstly, the influences of the type and pH value for cosolvent were explored by single factor experiments. And the 70% ethanol with pH value of 10 was fixed as cosolvent. Then, the effects of extracting factors such as extracting pressure, temperature, time and cosolvent dosage, were investigated with orthogonal experiments. According to the researching report, the optimal process conditions were as follows: 150 g raw material, extraction temperature 45 ℃, extraction pressure 20 MPa, extraction time of 2 h, 70% ethanol with pH value of 10 as cosolvent, 900 mL cosolvent. Under these conditions, the extraction rate for flavonoids of Poacynum hendersonii could reach 5.28%, which is higher than the rate of extraction solvent extraction method.

Publication Date

10-28-2015

First Page

231

Last Page

233,249

DOI

10.13652/j.issn.1003-5788.2015.05.058

Recommended Citation

Junyou, SHI; Nianhua, JING; and Caixia, LI (2015) "Study on extraction of flavonoids from Poacynum hendersonii by suporcritical CO2," Food and Machinery: Vol. 31: Iss. 5, Article 58.
DOI: 10.13652/j.issn.1003-5788.2015.05.058
Available at: https://www.ifoodmm.cn/journal/vol31/iss5/58

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