食品科学 ›› 2008, Vol. 29 ›› Issue (7): 424-427.

• 营养卫生 • 上一篇    下一篇

薯蔓多糖的体外抗氧化作用研究

罗丽萍, 高荫榆, 王应想,夏冬华,陈才水   

  1. 南昌大学食品科学与技术国家重点实验室; 南昌大学食品科学与技术国家重点实验室 江西南昌330047生物质转化教育部工程研究中心; 江西南昌330047; 江西南昌330047生物质转化教育部工程研究中心
  • 出版日期:2008-07-15 发布日期:2011-07-28

Antioxidant Effect in vitro of Polysaccharides from Sweet Potato Vines

 LUO  Li-Ping, GAO  Yin-Yu, WANG  Ying-Xiang, XIA  Dong-Hua, CHEN  Cai-Shui   

  1. 1.State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; 2.Engineering Research Center of Biomass Conversion, Ministry of Education, Nanchang 330047, China
  • Online:2008-07-15 Published:2011-07-28

摘要: 以我国广泛栽培的徐薯18薯蔓为原料,经中试设备热水提取、分离纯化获得纯度为93.5%的薯蔓多糖(PSPV)。研究了PSPV的理化性质和体外抗氧化作用。结果表明,PSPV对O2·清除能力EC50为4.8μg/ml,对·OH清除率EC50为4.4μg/ml;PSPV对亚油酸也有很好的抗氧化作用,0.20%的PSPV与0.10%BHT作用相当。PSPV能有效清除O2·和·OH,对脂质过氧化有明显抑制作用,具有显著的体外抗氧化作用,并呈现一定的量效关系,是一种值得开发的天然抗氧化剂。

关键词: 抗氧化作用, 多糖, 薯蔓

Abstract: To exploit the rich resources, sweet potato vines of Xushu 18 were selected as raw materials to extract polysaccharides (PSPV) by comprehensive pilot-extracting technologies since this kind is cultivated in China widely. By isolation and purification, PSPV powder was obtained with 93.5% purity. The physical and chemical properties and antioxidant effects of PSPV were studied. The results showed that the scavenging capabilities on O·2and ·OH of PSPV are obviously, and the values of EC50 are 4.8μg/ml and 4.4μg/ml respectively. Moreover, PSPV have strong antioxidant activities on linoleic acid. 0.20% PSPV and 0.10% BHT have equivalent effects. Since it can efficiently remove O·2and ·OH and shows marked effect on scavenging R· or ROO· with dose-effect relationship, it can be exploited as natural antioxidant.

Key words: antioxidant effect, polysaccharides, sweet potato vines