毛杨梅、余甘子、落叶松树皮原花色素抗氧化能力研究  

Comparison of the Antioxidant Activity of the Bark Extracts of Myrica esculenta,Phyllanthus emblica and Larix gmelinii

作　　者：徐曼[1,2,3,4] 汪咏梅[1,2,3,4,5] 张亮亮[1,2,3,4,5] 吴冬梅[1,2,3,4,5] 陈笳鸿[1,2,3,4] 

机构地区：[1]中国林业科学研究院林产化学工业研究所 [2]生物质化学利用国家工程实验室 [3]国家林业局林产化学工程重点开放性实验室 [4]江苏省生物质能源与材料重点实验室,江苏南京210042 [5]中国林业科学研究院林业新技术研究所,北京100091

出　　处：《林产化学与工业》2011年第6期41-45,共5页Chemistry and Industry of Forest Products

基　　金：“十一五”国家科技支撑计划资助(2006BAD18B0403)

摘　　要：从毛杨梅、余甘子、落叶松3种树皮中提取分离得到原花色素产物。通过测定3种树皮原花色素产物的清除DPPH自由基能力、三价铁还原抗氧化能力(FRAP)和抑制油脂过氧化能力,综合评价了3种树皮原花色素的抗氧化活性。结果表明,3种树皮原花色素均显示出良好的抗氧化能力,其抗氧化活性强弱顺序为:毛杨梅树皮原花色素>余甘子树皮原花色素>落叶松树皮原花色素。验证了原花色素分子结构中羟基数目及位置差异对其抗氧化活性起重要作用,酚羟基数目及相邻酚羟基多则活性更强的理论构效关系。Proanthocyanidins, which are the predominant compounds of the bark extracts of Myrica esculenta,PhyUantus emblica and Larix gmelini, were separated and purified in the present study. Three different systems, i. e. , the DPPH radical scavenging assay, FRAP and lipid peroxidation inhibitory activity were used to investigate the antioxidant activity of the extracts. The resuhs showed that all three extracts had high antioxidant activity. The bark extracts of M. esculenta had a stronger antioxidant ability than those of P. emblica and L. gmelini. The structure-activity relationship of proanthocyanidins was confirmed on the basis of the results obtained. The more hydroxyl groups （-OH） of these compounds might contribute to the higher antioxidant activity.

关 键 词：原花色素 抗氧化活性 毛杨梅 余甘子 落叶松 

分 类 号：TQ351[化学工程]