Position: Home > Articles > Antioxidative Activity Evaluation Study on Fermented Tofu Extracts by Scavenging DPPH
FOOD SCIENCE
2004,25
(9)
169-172
用清除有机自由基DPPH法评价市售腐乳提取物的抗氧化能力
作 者：
汪立君;李里特;范俊峰;齐藤昌义
单 位：
日本国际农林水产业研究中心;中国农业大学食品科学与营养工程学院
关键词：
1,1-二苯基-2-苦基苯肼(DPPH);腐乳;抗氧化性
摘 要：
用清除1,1-二苯基-2-苦基苯肼(DPPH)自由基能力表示腐乳提取物的抗氧化能力,并以抗氧化剂(α-生育酚)为当量浓度表示抗氧化的能力大小。中国市售14种腐乳的水提取物的抗氧化活性为2.03～11.93μgα-生育酚/mg,50%乙醇提取物的抗氧化活性为0.75～4.94μgα-生育酚/mg。14种腐乳提取物的总抗氧化活性为2.91～16.87μgα-生育酚/mg)。贵州的“老干爹”和福建的“米酱豆腐乳”均显出最大的活性。
译 名：
Antioxidative Activity Evaluation Study on Fermented Tofu Extracts by Scavenging DPPH
作 者：
WANG Li-jun1,LI Li-te1,FAN Jun-feng1,Qi2(1.College of Food Science and Nutritional Engineering, China Agricultuve University, Beijing 100083, China;2.Japan International Agriculture Forest Research Center, Cicheng 305-86, Japan)
关键词：
diphenyl-2-picrylhydrazyl (DPPH) ;fermented tofu;antioxidative activity
摘 要：
The antioxidative activity of fermented tofu extracts was determined by the capacity of scavenging 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical, and the evaluated unit was expressed as the equivalent concentration of α-tocopherol.After extraction, the antioxidative activities of 14 brands of fermented tofu from the markets were determined. The antioxidativeactivity units of water extracts from the 14 brands were from 2.03 to 11.93μg α-tocopherol/mg, and those of 50% ethanol extractswere from 0.75 to 4.94μgα-tocopherol/mg. The antioxidative activity units of total extracts from the 14 brands were from2.91 to 16.87μgα-tocopherol/mg The brand of LaoGanDie from Guizhou and the brand of MiJiangFuRu from Fujian showedthe highest activity units in all samples.
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