香椿老叶粗提物抗氧化活性的研究  

Antioxidant activity of crude extract from old leaves of toona sinensis

作　　者：王玉荣[1] 江慎华[1] 陈勉华[1] 王昌禄[1] 

机构地区：[1]天津科技大学食品工程与生物技术学院,食品营养与安全教育部重点实验室,天津300457

出　　处：《食品科技》2011年第2期186-188,共3页Food Science and Technology

基　　金：国家“十一五”科技支撑计划项目(2006BAD27B06-2);天津科技大学科学研究基金项目(20070221)

摘　　要：对香椿老叶粗提物的抗氧化活性进行了研究。将香椿老叶粗提物制备成相当于生药含量0.576、0.72、0.96、1.44 mg/mL和2.88 mg/mL的样液,测定样品的总还原力、FRAP(三价铁还原抗氧化能力测试)法抗氧化能力和DPPH(1,1-二苯基苦基苯阱)自由基清除能力。香椿老叶总黄酮和总多酚含量分别为4.78%和5.06%。该浓度样液的总还原力、FRAP法抗氧化能力均比浓度为25、50、100、150μg/mL和200μg/mL的阳性对照BHT(2,6-二叔丁基对甲基苯酚)高,DPPH(1,1-二苯基苦基苯阱)自由基清除能力与阳性对照Vc相当。实验结果表明,香椿老叶具有很强的抗氧化能力,值得深入研究和开发。The antioxidant activity of the crude extracts from old leaves of toona sinensis was studied.The solutions of crude extracts（equivalent of crude drug 0.576,0.72,0.96,1.44 mg/mL and 2.88 mg/mL） were investigated for their reducing power,ferric reducing antioxidant power（FRAP） and 1,1-diphenyl-2-picr-yl-hydrazyl（DPPH） radical scavenging ability.The content of total flavonoids and polyphenol was 4.78% and 5.06% respectively.The reducing power and FRAP of the sample solutions were higher than positive control,2,6-Di-tert-butyl-4-methylphenol（25,50,100,150 μg/mL and 200 μg/mL）.DPPH radical scavenging ability was equivalent to Vitamin C.The results indicated that the old leaves of toona sinensis had strong antioxidant activities and deserved further study.

关 键 词：香椿 粗提物 抗氧化 

分 类 号：TS201.3[轻工技术与工程—食品科学]