豆甾醇在葵花油水包油乳状液中抗氧化作用的研究  

Antioxidant Activities of Stigmasterol in Sunflower Oil-in-Water Emulsion System

作　　者：左玉[1] 张彩凤[1] 贾泽慧[1] 谢文磊[2] 

机构地区：[1]太原师范学院化学系,太原030031 [2]河南工业大学化学化工学院,郑州450001

出　　处：《中国粮油学报》2016年第1期36-42,共7页Journal of the Chinese Cereals and Oils Association

基　　金：国家自然科学基金(51174275)

摘　　要：用由非离子表面活性剂Tween 20稳定的葵花油水包油乳状液模拟非均相食品体系,用AAPH热分解生成的自由基引发脂质氧化,通过硫氰酸铁法和硫代巴比妥酸反应物法检测脂质的氧化进程,研究豆甾醇的抗氧化活性以及VC和VE对其抗氧化活性的影响。结果表明,不同浓度的豆甾醇均具有抗氧化活性,其最佳抗氧化质量浓度为0.02 mg/mL。在考察两种抗氧化剂的协同作用时发现各种不同浓度的豆甾醇与VC或VE共同作用时均不显示协同增效作用。The antioxidant activity of stigmasterol had been investigated in sunflower oil -in -water emulsion system to be exposed with water soluble 2, 2 - azobis （2 - amidinopropane） hydrochloride （AAPH） generated peroxyl radicals. Total Antioxidant Activity （TAA） of stigmasterol was evaluated by the ferric thiocyanate assay measurement as well as thiobarbituric acid test. The results indicated that stigmasterol inhibited the lipid oxidation as a chain breaking antioxidant. Furthe, synergistic interaction between stigmasterol and α-tocopherol/ascorbic acid against lipid peroxidation also has been investigated. The results showed that there were no synergistic interactions found in the whole experiment.

关 键 词：脂质氧化 抗氧化活性 协同作用 生物抗氧化剂 豆甾醇 

分 类 号：O69[理学—化学]