Antioxidant capacities and total phenolic contents of infusions from 223 medicinal plants
Antioxidant capacities and total phenolic contents of infusions from 223 medicinal plants
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DOI：
10.1016/j.indcrop.2013.09.017
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发表时间：
2013-11-01
影响因子：
5.9
通讯作者：
Li, Hua-Bin
中科院分区：
文献类型：
--
作者：
Li, Sha;Li, Shu-Ke;Li, Hua-Bin
为了寻找天然抗氧化剂的新来源，采用铁还原抗氧化能力（FRAP）和Trolox等效抗氧化能力（TEAC）测定法对223种药用植物提取液的抗氧化能力进行了系统评价，并采用Folin-Ciocalteu法测定了其总酚含量（TPC）。TEAC值和FRAP值之间的相关性很弱（R-2 = 0.1563），这表明这些植物中能够清除自由基的成分可能与还原氧化剂的成分不同。TEAC值与TPC值呈显著正相关（R-2 = 0.7549），FRAP值与TPC值呈极弱相关（R-2 = 0.1966），表明酚类化合物可能是这些植物清除自由基活性的主要成分，而不是降低氧化能力的主要成分。筛选出几种具有高抗氧化能力和TPC的植物，这些植物可能是潜在的丰富的天然抗氧化剂资源，可开发成中药冲剂、功能食品或药物，用于防治氧化应激引起的疾病。(C)2013 Elsevier B. V.保留所有权利。
In order to find new sources of natural antioxidants, antioxidant capacities of infusions from 223 medicinal plants were systemically evaluated using ferric-reducing antioxidant power (FRAP) and Trolox equivalent antioxidant capacity (TEAC) assays, and their total phenolic contents (TPC) were measured by Folin-Ciocalteu method. A very weak correlation (R-2 = 0.1563) between the TEAC value and the FRAP value suggested that the components capable of scavenging free radicals could be different from those reducing oxidants in these plants. A significant correlation (R-2 = 0.7549) between TEAC value and TPC as well as a very weak correlation (R-2 = 0.1966) between FRAP value and TPC implied that phenolic compounds in these plants could be the main components contributing to scavenging free radical activities, but not be responsible for reducing oxidant abilities. Several plants possessing the high antioxidant capacities and TPC have been screened out, which could be potential rich resources of natural antioxidants, and could be developed into herbal infusion, functional food or pharmaceuticals for prevention and treatment of diseases caused by oxidative stress. (C) 2013 Elsevier B.V. All rights reserved.