异VC饱和脂肪酸酯在菜籽油中的抗氧化性能-食品科学.PDFVIP

※基础研究 食品科学 2008, Vol. 29, No. 01 83 异VC 饱和脂肪酸酯在菜籽油中的抗氧化性能 1 1, 2 1 1 叶红德 ，郑大贵 *，余衍文 ，刘 锋 ，吴 涛 (1.上饶师范学院 江西省普通高校应用有机化学重点实验室，江西 上饶 334001； 2.南昌大学化学系，江西 南昌 330047) 摘 要：将合成的异VC 癸酸酯、月桂酸酯、豆蔻酸酯、棕榈酸酯、硬脂酸酯应用于新鲜菜籽油中进行强氧化 试验，通过测定POV 值，评价了它们的抗氧化性能。结果表明：不同异VC 酯的抗氧化性能只与菜籽油中异VC 的相对含量有关；异VC 酯的抗氧化性能表现出明显的剂效关系；参照中国规定的最高允许浓度分别添加各种抗氧 化剂，异VC 豆蔻酸酯的抗氧化性能比VC 豆蔻酸酯、PG 和BHT 更好。 关键词：异 VC 饱和脂肪酸酯；异 VC 豆蔻酸酯；VC 豆蔻酸酯；抗氧化性能 Antioxidation Activity of Saturated Acyl D-Isoascorbates in Rapeseed Oil 1 1, 2 1 1 YE Hong-de ，ZHENG Da-gui *，YU Yan-wen ，LIU Feng ，WU Tao (1.Key Laboratory of Applied Organic Chemistry, Adanced Institutions of Jiangxi Province, Shangrao Normal College, Shangrao 334001, China；2.Department of Chemistry, Nanchang University, Nanchang 330047, China) Abstract ：The antioxidation activity of D-isoascorbyl caprate, laurate, myristat, palmitate and stearate in fresh rapeseed oil is evaluated by peroxide value (POV) determination. The results showed that the antioxidation activity of different acyl D- isoascorbate is only in proportion to relative content of D-isoascorbic acid fraction in rapeseed oil. For each tested D-isoascorbate, the antioxidation activity exhibits signifcant dose-effect relationship. The antioxidation activity of D-isoascorbyl myristate is better than that of L-ascorbyl myristate,PG and BHT, when their amount is respectively added according to the maximum concentration allowed as food additives in China. Key words：saturated acyl D-isoascorbates；D-isoascorbyl myristate；L-ascorbyl myristate；antioxidation