海藻油微胶囊中DHA检测预处理方法的比较  

COMPARISON ON PRETREATMENT METHODS OF DHA DETERMINATION FROM MICROCAPSULATED ALGAL OIL

作　　者：齐金峰[1] 熊华[1] 陈振林[1,2] 韩丹[1] 谢明勇[1] 邓泽元[1] 郑为完[1] 

机构地区：[1]南昌大学食品科学与技术国家重点实验室,江西南昌330047 [2]贺州学院化学与生物工程系,广西贺州542800

出　　处：《食品研究与开发》2009年第7期13-17,共5页Food Research and Development

基　　金：国家"十一五"支撑计划课题(2006BAD27B04);国家"十一五"863计划课题(2008AA10Z332);教育部长江学者和创新团队发展计划课题(IRT0540)

摘　　要：对糊精、酪蛋白与变性淀粉、蔗糖两组壁材组合制备的海藻油微胶囊,采用酶法破壁与超声波法破壁,然后分别用氯仿-甲醇法、碱性乙醚法和酸水解法提取油脂,甲脂化后气相色谱分析二十二碳六烯酸(DHA)含量。结果表明:对于同一种微胶囊样品,破壁方法和油脂提取方法的不同均会对DHA的含量测定有影响。同一种破壁方法,采用碱性乙醚法提取油脂测得的DHA含量较其它方法高;同一种油脂提取方法,酶法破壁测得的DHA含量比超声波法测得的含量高。The algal oil was microcapsulated with gum/casein and modified starch/sugar as two sets of wall material. The DHA of microcapsulated algal oil was determined by breaking wall material first with enzymic and supersonic treatment separately, and then extracting oil with chloroform-methanol, alky aether and acid hydrolysis method. The DHA content was analyzed by gas chromatography after lipids methylated. It showed that the determined results were effected with wall-material broken method and oil extraction method for the same sample. The DHA content with alky-aether oil extraction was higher than others after the same wall-material broken treatment; Using the same oil extraction method, the DHA content with enzymic was higher than supersonic treatment.

关 键 词：海藻油 DHA 高峰淀粉酶(TaKa酶) 超声波法 油脂提取 气相色谱 

分 类 号：TS227[轻工技术与工程—粮食、油脂及植物蛋白工程]