Anti-oxidant activity and total phenolic content of some Asian vegetables

被引:780
作者
Kaur, C
Kapoor, HC [1 ]
机构
[1] Indian Agr Res Inst, Div Biochem, New Delhi 110012, India
[2] Indian Agr Res Inst, Div Fruits & Hort Technol, New Delhi 110012, India
关键词
anti-oxidant activity; beta-carotene; phenolics; phenols; vegetables;
D O I
10.1046/j.1365-2621.2002.00552.x
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
The anti-oxidant activity of extracts from 36 vegetables was evaluated by using a model system consisting of beta-carotene and linoleic acid. The total phenolics of the extracts was determined spectrophotometrically according to the Folin-Ciocalteau procedure and ranged from 34 to 400 mg (100 g)(-1) on a fresh weight basis. Mint, aonla, black carrots, chenopodium, fenugreek, kachnar and ginger had high phenolic contents. The anti-oxidant activity expressed as per percent inhibition of oxidation ranged from a high of 92% in turmeric extracts to a low of 12.8% in long melon. Other vegetables found to have high anti-oxidant activity (>70%) were kachnar, aonla, ginger, fenugreek, mint, beetroot, black carrots, Brussels sprouts, broccoli, lotus stem, yam, coriander and tomato. Antioxidant activity correlated significantly and positively with total phenolics (r(2) = 0.6578, P < 0.05). The results indicate that vegetables containing high phenolics may provide a source of dietary anti-oxidants.
引用
收藏
页码:153 / 161
页数:9
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