天然产物研究与开发2017，Vol.29Issue(10)：1717-1722,6.DOI:10.16333/j.1001-6880.2017.10.015
喜树果多糖的理化性质和抗氧化活性研究
Physiochemical Properties and Antioxidant Activity of Camptotheca acuminata Fruit Polysaccharides
杨勇 1邓银华 1韩巧红 1黄博 1户维超 1袁明1
作者信息
- 1. 四川农业大学生命科学学院,雅安625014
- 折叠
摘要
Abstract
Three polysaccharides (CAP-H,CAP-M and CAP-U) were extracted from Camptotheca acuminate fruit by hot water extraction,microwave-assisted extraction and ultrasonic-assisted extraction methods.Their physiochemical properties were analyzed by Fourier transform infrared spectroscopy (FTIR) analyses and differential scanning colorimeter (DSC).In additon,their antioxidant activities were evaluated by scavenging capability of DPPH free radical,hydroxyl free radical,total reducing power test and iron ion chelating ability in vitro.The results showed that the polysaccharide yield of microwave-assisted extraction was significantly higher than the other two methods.But there was no significant difference of physiochemical properties between the three polysaccharides.The hydroxyl free radicals and DPPH radical scavenging abilities of CAP-H were higher than CAP-M and CAP-U,and the IC50 value were 0.775 mg/mL and 0.648 mg/mL,respectively.And CAP-H also showed significantly higher reducing power than CAP-M and CAP-U.But CAP-M showed the best iron ion chelating ability with IC50 value 1.745 mg/mL.关键词
喜树果/多糖/理化性质/抗氧化活性Key words
Camptotheca acuminata fruit/polysaccharides/physiochemical properties/antioxidant ability分类
化学化工引用本文复制引用
杨勇,邓银华,韩巧红,黄博,户维超,袁明..喜树果多糖的理化性质和抗氧化活性研究[J].天然产物研究与开发,2017,29(10):1717-1722,6.
