从桂花花朵中分离得到的酚类抗氧化剂。
Phenolic antioxidants isolated from the flowers of Osmanthus fragrans.
机构信息
Department of Food Nutrition, Chung Hwa University of Medical Technology, No.89, Wenhua 1st St., Rende Dist., Tainan City 71703, Taiwan.
出版信息
Molecules. 2012 Sep 7;17(9):10724-37. doi: 10.3390/molecules170910724.
O. fragrans has slightly less antioxidative activity than green tea. Five phenolic compounds, tyrosyl acetate (1), (+)-phillygenin (2), (8E)-ligustroside (3), rutin (4), and verbascoside (5), were isolated from the CHCl3 sub-extract of O. fragrans. The structures were elucidated by interpreting their spectral data. Evaluation of the antioxidative property of the isolated (+)-phillygenin (2), rutin (4), and verbascoside (5) revealed strong DPPH radical scavenging activity, with IC50 values of 19.1, 10.3, and 6.2 μM, respectively. These isolates also exhibited an H2O2 scavenging ability, with IC50 values of 10.5, 23.4, and 13.4 μM, respectively.
甜叶悬钩子的抗氧化活性略低于绿茶。从甜叶悬钩子的 CHCl3 亚提取物中分离得到了 5 种酚类化合物：乙酰酪氨酸（1）、（+）-松脂醇（2）、（8E）-当归脂素（3）、芦丁（4）和毛蕊花糖苷（5）。通过解析其光谱数据阐明了它们的结构。对分离得到的（+）-松脂醇（2）、芦丁（4）和毛蕊花糖苷（5）的抗氧化性能进行评价，结果表明它们具有很强的 DPPH 自由基清除活性，IC50 值分别为 19.1、10.3 和 6.2 μM。这些分离物还表现出对 H2O2 的清除能力，IC50 值分别为 10.5、23.4 和 13.4 μM。
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