摘要
将白藜芦醇添加至丹阳黄酒中,形成含有质量浓度为0.1 mg/m L白藜芦醇的新型丹阳黄酒,以此为研究对象,对其清除DPPH、羟基、ABTS自由基和总还原能力进行测定,来评价白藜芦醇丹阳黄酒产品的抗氧化活性及稳定性。结果表明,0.1 mg/m L的白藜芦醇丹阳黄酒对DPPH、羟基、ABTS自由基的半抑制浓度(IC_(50)值)依次为0.40 m L/m L、0.80 m L/m L、0.51 m L/m L,普通丹阳黄酒IC_(50)值依次0.70 m L/m L、0.81 m L/m L、0.80 m L/m L,新型丹阳黄酒的总还原力明显高于普通丹阳黄酒。综合比较,含白藜芦醇丹阳黄酒抗氧化能力高于普通丹阳黄酒。同时,新型丹阳黄酒在常温下存放前3 d的白藜芦醇含量快速下降,之后趋于稳定。
A new type of Danyang Huangjiu(Chinese rice wine) with 0.1 mg/ml resveratrol was produced with adding resveratrol into Danyang Huangjiu.Taking this as the research object,the scavenging DPPH free radical,hydroxyl radical,ABTS radical activity and total reducing power was determined,to evaluate the antioxidant activity and stability of the Danyang Huangjiu.As a result,the 50% inhibiting concentration(IC_(50)) values of the new type of Huangjiu with 0.1 mg/ml resveratrol to DPPH free radical,hydroxyl radical and ABTS radical were 0.40 ml/ml,0.80 ml/ml,0.51 ml/ml,respectively.The IC_(50) values of the ordinary Danyang Huangjiu were 0.70 ml/ml,0.81 ml/ml,0.80 ml/ml,respectively.The total reducing power of the new Danyang Huangjiu was obviously higher than that of the ordinary Danyang Huangjiu.By comparison,the antioxidant capacity of the new Danyang Huangjiu was higher than that of the ordinary Danyang Huangjiu.At the same time,resveratrol contents of the new Danyang Huangjiu decreased rapidly in the first 3 d of storage,and then tended to be stable.
引文
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