脱脂椰麸谷蛋白-1抗氧化性的研究

Analysis on Antioxidant Activities of Defatted Coconut Cake Glutelin-1

从脱脂椰麸中提取椰麸谷蛋白-1,并分析脱脂椰麸谷蛋白-1(defatted coconut cake glutelin-1,DCCG-1)的氨基酸组成和体外抗氧化性,包括对超氧根离子自由基、羟基自由基和ABTS+·的清除能力,及其还原力与金属离子络合能力。结果表明,脱脂椰麸谷蛋白-1对超氧根离子自由基、ABTS+·、羟基自由基的清除能力较强,同时表现出较好的还原力和Fe2+络合能力。这表明脱脂椰麸谷蛋白-1具有较好的抗氧化性,在食品或其它工业中有潜在的用途。

The glutelin-1 was extracted from defatted coconut cake. The amino acid composition and antioxidantactivity of defatted coconut cake glutelin -1 was studied,including the scavenging activity on superoxideradical,hydroxyl radical and ABTS radical,and the reducing power and metal chelating capacity. Comparedwith butylated hydroxytoluene,defatted coconut cake glutelin-1（DCCG-1）demonstrated higher reducingpower and scavenging activity onO2-·and ABTS＋·, but it showed lower· OH scavenging ability （20.48%）andchelating capacity （3.60%） . This indicateed that DCCG-1 had potential application as natural antioxidant infood or other industry.