%0 Journal Article
%A *
%A DUAN Ming-Hui
%A DUAN Xi-Hua
%A FU Yu-Jie
%A YAO Xiao-Hui
%A ZHANG Dong-Yang
%T Ultrasound-assisted Extraction of 2&Prime;-O-galloylhyperin from <em>Pyrola calliantha</em> H.Andr.
%D 2012
%R 10.7525/j.issn.1673-5102.2012.04.021
%J Bulletin of Botanical Research
%P 497-500
%V 32
%N 4
%X Based on the preliminary experiments, a three-variable, three-level Central Composite Design (CCD) was performed to study the ultrasound-assisted extraction of 2&Prime;-O-galloylhyperin from <em>Pyrola calliantha</em> H.Andr.. The optimum parameters were as follows: extraction time 45 min, ultrasound power 40 kHz, three extraction cycles, extraction temperature 60℃, liquid/solid ratio 33∶1, ethanol concentration 50%. Under the optimal conditions, the average extraction yields of 2&Prime;-O-galloylhyperin was 5.024 mg&middot;g<sup>-1</sup>.
%U https://bbr.nefu.edu.cn/EN/10.7525/j.issn.1673-5102.2012.04.021