Phenolic antioxidants from the leaves of Corchorus olitorius L.
Phenolic antioxidants from the leaves of Corchorus olitorius L.
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DOI：
10.1021/jf990347p
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发表时间：
1999-10-01
影响因子：
6.1
通讯作者：
Higashio, H
中科院分区：
文献类型：
--
作者：
Azuma, K;Nakayama, M;Higashio, H
通过核磁共振和FAB-MS从苦皮叶中鉴定出6种酚类抗氧化化合物[5-咖啡酰奎宁酸(绿原酸)，3，5-二咖啡酰奎宁酸，3-半乳糖苷，3-半乳糖苷，3-(6-丙二酰基)-1，3-(6-丙二酰半乳糖苷)和3-(6-丙二酰半乳糖苷)]。测定了油茶叶中这些酚类化合物、抗坏血酸和α-生育酚的含量，并用自由基生成剂引发的亚油酸过氧化反应测定了它们的抗氧化活性。结果表明，5-咖啡酰奎宁酸是油茶叶中主要的酚类抗氧化剂。
Six phenolic antioxidative compounds [5-caffeoylquinic acid (chlorogenic acid), 3,5-dicaffeoylquinic acid, quercetin 3-galactoside, quercetin 3-glucoside, quercetin 3-(6-malonylglucoside), and quercetin 3-(6-malonylgalactoside) (tentative)] were identified from the leaves of Corchorus olitorius L. (moroheiya) by NMR and FAB-MS. The contents of these phenolic compounds, ascorbic acid, and alpha-tocopherol in C, olitorius leaves were determined, and their antioxidative activities were measured using the radical generator-initiated peroxidation of linoleic acid. The results obtained showed that 5-caffeoylquinic acid was a predominant phenolic antioxidant in C. olitorius leaves.