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.
出处
《食品科技》
CAS
北大核心
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)
关键词
香椿
粗提物
抗氧化
toona sinensis
crude extract
antioxidant
