期刊
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
卷 95, 期 14, 页码 2956-2964出版社
WILEY
DOI: 10.1002/jsfa.7039
关键词
-amylase; -glucosidase; DPPH; functional food; ORAC; vitamin C
资金
- Institute of Fundamental Studies, Kandy, Sri Lanka
- Temasek School of Applied Science, Temasek Polytechnic, Singapore
BACKGROUNDEighteen edible plants were assessed for their antioxidant potential based on oxygen radical absorbance capacity (ORAC), 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity, total phenolics, vitamin C content and various lipophilic antioxidants. The inhibitory activities of the plant extracts against the enzymatic activities of -amylase and -glucosidase were also evaluated. RESULTSThe antioxidant and starch hydrolase activities of the plants varied widely across a single batch of analysis. The ORAC and DPPH radical scavenging EC50 values varied between 298 and 1984 Trolox equivalents g(-1) fresh weight and between 91 and 533 mg kg(-1) fresh weight, respectively. The total phenolics and vitamin C contents varied between 32 and 125 mg gallic acid equivalents g(-1) fresh weight and between 96 and 285 mu g g(-1) fresh weight, respectively. All the plants contained neoxanthin, violaxanthin, and - and - carotene in varying amounts. Coccinia grandis, Asparagus racemosus, Costus speciosus, Amaranthus viridis and Annona muricata displayed the highest inhibitory activities against starch hydrolases. They were the most efficient against the breakdown of seven starches exposed to the two enzymes as well. CONCLUSIONSOverall, the edible plants were observed to display a high antioxidant potential with starch hydrolase inhibitory properties, which were beneficial in their being recognized as functional food. (c) 2014 Society of Chemical Industry
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据