‘紫娟’晒青绿茶中花色苷与水提物体外抗氧化研究

Study on in Vitro Antioxidant Activity of Water Extract and Anthocyanin from ‘Zi-Juan' Sun-dried Green Tea

分析了‘紫娟’晒青绿茶中水提物与花色苷体外抗氧化的能力。通过花色苷、水提物、抗坏血酸及二丁基羟基甲苯(BHT)之间的抗氧化比较,说明花色苷与水提物具有抗油脂氧化和过氧化的能力,花色苷的抗氧化效果优于水提物,但抗油脂氧化性能二者均不如二丁基羟基甲苯(BHT);花色苷抗脂质过氧化优于水提物,且二者抗脂质过氧化的效果均优于抗坏血酸;花色苷与水提物均具有较强的还原力,同时具有清除羟自由基、DPPH自由基的活性,且花色苷>水提物>抗坏血酸。

Analyzes the vitro antioxidant ability of purple Juan ＇a＇ green green tea and water extractings anthocyanins through the comparation of antioxidant among anthocyanins,water extractings,ascorbic acid and two butadiene styrene hydroxyl toluene （BHT） to illustrat the ability of anthocyanins and water extractings which can resists lipid oxidation and peroxide oxidation. It shows that the antioxidant effect of anthocyanins is better than water extraction content but both oil oxidation resistance effect are less than the two butadiene hydroxyl toluene （BHT）. Anthocyanins resistance of lipid peroxidation things are better than water extraction, and both lipid peroxidation resistance are better than the effect of ascorbic acid. Anthocyanins and water extraction have strong reducing power and the activity of clearing hydroxyl radicals and DPPH free radical which shows anthocyanins〉 water extractings〉ascorbic acid.