摘要
建立了一种评价花茶抗氧化性的方法.花茶中的抗氧化性成份和抗坏血酸(VC)都能还原氯金酸形成金纳米颗粒,采用光谱法对金颗粒的浓度进行定量测定,即可把花茶抗氧化性用参照物VC的浓度来评价.利用该方法对竹叶青、玫瑰、薰衣草等7种花茶的抗氧化性进行了测定,结果与传统的DPPH法一致.
A new method was established to evaluate the antioxidant capacity of the scented tea. Both the antioxidant ingredients of the scented tea and ascorbic acid （VC） can make the HAuCl4 reduction to gold nanoparticles, which are determined by spectroscopic methodology. The antioxidant activity of the scented tea is evaluated by the concentration of VC. The antioxidant capacity of seven kinds of scented teas, such as trimeresurus, rose,lavender,et al. ,was analyzed by using the method. By means of comparing experimental data from traditional DPPH scavenging activity,the novel method was reliable and accurate.
出处
《河北师范大学学报（自然科学版）》
CAS
北大核心
2014年第3期278-281,共4页
Journal of Hebei Normal University：Natural Science
基金
国家自然科学基金(51278253
21177061)
中央高校基本科研业务费专项资金(30920130122007)
江苏省"青蓝工程"
江苏经贸职业技术学院重大课题(JMZ1201210)
关键词
金纳米颗粒
花茶
抗氧化
评价
gold nanoparticle
scented tea
antioxidant capacity
evaluate
