鼠尾草提取物多酚含量与抗氧化活性的研究  

The polyphenolic contents and antioxidant activities of Salvia officinalis extracts

作　　者：章林[1] 冷雪娇[1] 黄明[1] 

机构地区：[1]南京农业大学国家肉品质量安全控制工程技术研究中心,江苏南京210095

出　　处：《食品工业科技》2012年第19期143-146,共4页Science and Technology of Food Industry

基　　金：国家自然科学基金项目(30972133);江苏省自然科学基金项目(BK2009314)

摘　　要：研究从不同的角度来评价鼠尾草提取物的抗氧化活性。采用50%丙酮和70%乙醇两种溶剂对鼠尾草进行提取,用Folin-Ciocalteu法测定提取物中的多酚含量,并用四种方法,即清除DPPH(1,1-二苯基-2-三硝基苯肼)自由基法、螯合Fe2+法、还原力法和磷钼络合物法测定提取物的抗氧化活性。研究结果表明,50%丙酮提取物中的多酚含量显著高于70%乙醇提取物。鼠尾草提取物具有良好的自由基清除能力、螯合Fe2+能力、还原能力和总抗氧化能力。鼠尾草50%丙酮提取物的抗氧化活性总体上比70%乙醇提取物高(还原力除外)。The antioxidant activities of Salvia officinalis（sage）extracts from various perspectives were evaluated.Sage powder were extracted with 50% acetone and 70% ethanol,the polyphenol content and antioxidant activity of sage extracts were determined by Folin-Ciocalteu method and DPPH radical scavenge,chelating Fe2＋,reducing power,phosphomolybdenum methods,respectively.The result indicated that the polyphenol content of extract in 50% acetone was significantly higher than extract in 70% ethanol.Both of the sage extracts possessed proper free radical scavenging activity,metal ions chelating activity,reduction activity and total antioxidant ability.In general,except for reducing power,the antioxidant activity of sage extract in 50% acetone was higher than in 70% ethanol.

关 键 词：多酚含量 鼠尾草 DPPH 螯合Fe2+ 还原力 磷钼络合物法 

分 类 号：TS201.3[轻工技术与工程—食品科学]