乳化剂用量对(+)-儿茶素在茶油乳化体系中抗氧化活性的影响  

Effect of Emulsifier Dosage on the Antioxidant Activity of (+)-Catechin in Camellia Oil in Water Emulsion

作　　者：朱勇[1] 龙奇志[1,2] 曹清明[1,2] 周波[1,2] 钟海雁[1,2] 

机构地区：[1]中南林业科技大学食品科学与工程学院,长沙410004 [2]粮油深加工与品质控制湖南省重点实验室,长沙410004

出　　处：《中国粮油学报》2014年第7期58-62,共5页Journal of the Chinese Cereals and Oils Association

基　　金：国家自然科学基金(31070612)

摘　　要：基于SPME-GC建立了茶油次级氧化产物中正已醛、2-反-己烯醛、辛醛、壬醛的定量分析方法,以指示物的加标回收率和变异系数(C.V)为指标选用壬醛作为茶油的次级氧化产物指示物,结合初级氧化产物(氢过氧化物)探讨了(+)-儿荼素在茶油乳化体系中乳化剂(吐温20)用量对其抗氧活性的影响。(+)-儿茶素在不同乳化剂用量的茶油乳化体系中的抗氧活性顺序依次为:对照>1%吐温20>1.5%吐温20>2.5%吐温20>2%吐温20。结果表明,在茶油乳化体系中(+)-儿茶素的抗氧活性随乳化剂用量的增多而降低。The quantitative analysis of camellia oil secondary oxidation products hexanal, trans - 2 - hexenal, octanal and nonanal have been developed by SPME - GC. Nonanal was selected as the indicator of secondary oxidation products by the process of recovery and C.V. The effect of emulsifier dosage on the antioxidant activity of （＋）- catechin in camellia oil in water emulsion has been investigated by indicator of hydroperoxides and nonanal; the antioxidant activity of （＋）- catechin in individual emulsifier dosage of emulsion with the order of control 〉 1% tween 20 〉 1.5% tween 20 〉2.5% tween 20 〉2% tween 20 respectively. The results showed that camellia oil in water emulsion the antioxidant activity of （＋）- catechin could decrease while tween 20 increases.

关 键 词：(+)-儿茶素 乳化剂 茶油 乳化体系 抗氧活性 

分 类 号：TS221[轻工技术与工程—粮食、油脂及植物蛋白工程]