Gong Jinyan, Xia Daozong, Huang Jun, Ge Qing, Mao Jianwei, Liu Shiwang, Zhang Ying
1 Zhejiang Provincial Key Lab for Chem & Bio Processing Technology of Farm Produces, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology , Hangzhou, People's Republic of China .
J Med Food. 2015 Apr;18(4):453-9. doi: 10.1089/jmf.2014.3189. Epub 2014 Nov 13.
This study was designed to detect characteristic compounds and evaluate the free radical scavenging capacity of the bamboo leaves extract and bamboo shavings extract (BSE). The antioxidant capacity of bamboo leaf n-butanol fraction (AOB) exhibited the highest total phenolic content (49.93%), total flavonoids content (24.11%), and characteristic flavonoids and phenolic acids, such as chlorogenic acid, caffeic acid, ferulic acid, p-coumaric acid, orientin, homoorientin, vitexin, and isovitexin. Available data obtained with in vitro models suggested that AOB had higher free radical scavenging capacity with IC(50) values of 1.04, 4.48, 5.37, and 1.12 μg/mL on DPPH(•), O(2)(•-), (•)OH, and H(2)O(2), respectively, than the other two extracts, bamboo leaf water extract and BSE. The results indicated that the extracts from different parts of the bamboo possess excellent antioxidant activity, which can be used potentially as a readily accessible and valuable bioactive source of natural antioxidants.
本研究旨在检测竹叶提取物和竹屑提取物（BSE）中的特征性化合物，并评估其自由基清除能力。竹叶正丁醇部位（AOB）的抗氧化能力表现为总酚含量最高（49.93%）、总黄酮含量最高（24.11%），以及含有特征性黄酮类化合物和酚酸，如绿原酸、咖啡酸、阿魏酸、对香豆酸、荭草素、异荭草素、牡荆素和异牡荆素。体外模型获得的现有数据表明，AOB的自由基清除能力更高，其对DPPH(•)、O(2)(•-)、(•)OH和H(2)O(2)的IC(50)值分别为1.04、4.48、5.37和1.12μg/mL，高于另外两种提取物，即竹叶水提取物和BSE。结果表明，竹子不同部位的提取物具有优异的抗氧化活性，有望作为一种易于获取且有价值的天然抗氧化剂生物活性来源。
