Preliminary assessment of antioxidant activity of young edible leaves of seven Ficus species in the ethnic diet in Xishuangbanna, Southwest China
Preliminary assessment of antioxidant activity of young edible leaves of seven Ficus species in the ethnic diet in Xishuangbanna, Southwest China
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DOI：
10.1016/j.foodchem.2011.03.113
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发表时间：
2011-10-15
期刊：
影响因子：
8.8
通讯作者：
Wang, Wen-Hui
中科院分区：
文献类型：
--
作者：
Shi, Yin-Xian;Xu, You-Kai;Wang, Wen-Hui
7种榕属植物的幼叶，包括亚针叶树。西双版纳当地居民传统食用牛耳f、维管f、花萼f、毛蕊f、总状f和少齿f。研究了干嫩叶中总酚和类黄酮的含量。通过ABTS（+）和DPPH-自由基清除能力、铁还原能力和脂质过氧化抑制能力等体外实验，筛选了幼叶90%乙醇提取物的潜在抗氧化能力。在各系统中，杉木和木耳提取物的抗氧化活性均高于其他植物。我们得出结论，这两种物种是天然膳食抗氧化剂的有希望的来源。根据我们的统计分析，总酚和类黄酮含量似乎是导致提取物具有优异抗氧化能力的部分原因，并且所有提取物都表现出剂量依赖性的抗氧化活性。(C) 2011 Elsevier Ltd.版权所有。
The young leaves of seven Ficus species including F. virens var. sublanceolata. F. auriculata, F. vasculosa, F. callosa, F. virens var. verins, F. racemosa and F. oligodon are traditionally consumed by local people in Xishuangbanna. The dry young leaves were studied for their total phenolic and flavonoid contents. The 90% ethanolic extracts of the young leaves were screened for potential antioxidant capacity by employing different in vitro assays including ABTS(+) and DPPH- radical scavenging capacities, ferric reducing power and lipid peroxidation inhibition properties. Extracts from F. virens var. sublanceolata and F. auriculata showed higher antioxidant activity in all the systems than other species. We concluded that these two species are promising sources of natural dietary antioxidants. According to our statistical analysis, the total phenolic and flavonoid contents appear to be responsible, at least in part, for the extracts' excellent antioxidant capacity and all the extracts exhibited dose-dependent antioxidant activity. (C) 2011 Elsevier Ltd. All rights reserved.