革木蜜的抗氧化活性

Study on antioxidant activity of leatherwood honey

文中测定了革木蜜中的总酚和总黄酮含量,采用体外法评价了革木蜜的抗氧化活性。结果表明:革木蜜对DPPH自由基有较强的清除活性,且呈现量效关系。革木蜜的总酚含量为(473.74±6.27)μg/g蜂蜜,总黄酮含量为(0.375±0.003)μg/g蜂蜜。革木蜜的总抗氧化能力是洋槐蜜的3倍,但较荞麦蜜弱。革木蜜对羟基自由基诱导DNA氧化损伤有一定的保护作用;其抗氧化活性与其所含的总酚有关。

The antioxidant activity, total phenols and total flavonoids of leatherwood honey were investigated in this study. The results showed that the strong scavenging activity of leatherwood honey for DPPH was concentration dependent. Total phenols content of leatherwood honey was （473.74 ±6.27） ug/g honey, while total flavonoids content of leatherwood honey was （0. 375 ± 0. 003） ug/g honey. The total antioxidant activity of leatherwood honey was three times than that of acacia honey, lower than buckwheat honey. Leatherwood honey had a strong protection on DNA damage induced by hydroxyl radicals. This result demonstrated the antioxidant activity of leatherwood honey was related to total phenols.