公开(公告)号：US20230210934A1

公开(公告)日：2023-07-06

申请号：US17652210

申请日：2022-02-23

Applicant: Zhejiang University

Inventor： Shiguo Chen ,  Chengxiao Yu ,  Xinxin Hu ,  Jianle Chen ,  Haibo Pan ,  Xingqian Ye ,  Donghong Liu ,  Tian Ding

IPC: A61K36/815 ,  C08B37/00

CPC classification number: A61K36/815 ,  C08B37/0003

Abstract: Provided are a lycium barbarum leaf polysaccharide rich in galacturonic acid and a preparation method and use thereof. The method includes: mixing a lycium barbarum leaf and an acetone aqueous solution to obtain a mixture, and performing a fading treatment on the mixture to obtain a faded lycium barbarum leaf; extracting the faded lycium barbarum leaf with a chelating agent solution to obtain an extract solution; subjecting the extract solution to an alcohol precipitation with ethanol to obtain an alcohol precipitate; and subjecting the alcohol precipitate to an alcohol washing, a water redissolution, a dialysis and a drying in sequence to obtain the lycium barbarum leaf polysaccharide rich in galacturonic acid.