四种茶花的抗氧化性研究

STUDY ON ANTIOXIDANT ACTIVITY OF FOUR KINDS OF TEA FLOWERS

对4种常见饮用茶花中的总黄酮类物质及其抗氧化性与稳定性进行了研究。实验结果表明:4种茶花金银花、白菊花、茄瑰紫、千日紫的黄酮类物质得率依次为15.29%、12.35%、10.80%和6.53%。利用DPPH法对茶花提取液的抗氧化性测定结果表明,4种茶花都具有一定的抗氧化作用,且可与0.01%BHT的抗氧化能力相媲美。金银花、千日紫、白菊花和茄瑰紫的抑制率依次是94.33%、89.14%、85.46%、和82.79%。稳定性研究结果表明,4种茶花中的黄酮类物质均具有较好的稳定性。

The purpose of this study is about the contents, antioxidant activity and the stability of the flavonoids of the 4 kinds of tea flowers spices. The results showed that the contents of the flavonoids of Honegysuckle, Chrysanthemum, Safflower and Globeamaranth were 15.29 %, 12.35 %, 10.80 %, 6.53 % respectively. The antioxidant activity of flavonoid of the 4 kinds of tea flowers were studied by DPPH. The results indicated that all had the antioxidant activities and some of them were the same as 0.01% BHT. The inhibition rate of Honeysuckle, Globeamaranth ,Chrysanthemum and Safflower were 94.33 %, 89.14 %, 85.46 % and 82.79 % respectively. The results of stability study showed that all the 4 kinds of tea flowers had better stability.