白木通籽油的理化特性及热氧化稳定性  

Physico-chemical Properties and Thermal Oxidation Stability of Akebia trifoliata var. australis Seed Oil

作　　者：蒋岩[1] 杜研学[1] 熊华[1] 白春清[1] 张忠[1] 李捷[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

出　　处：《食品科学》2011年第15期34-38,共5页Food Science

基　　金：南昌大学食品科学与技术国家重点实验室目标导向项目(SKLF-MB-201005);江西省高新技术产业化重大项目(赣财教{2008}212号);国家发展与改革委员会项目(发改投资[2009]2825号)

摘　　要：采用正己烷浸提法提取白木通籽油,对白木通籽的基本成分、白木通籽油的理化特性和热氧化稳定性进行分析研究。结果表明:白木通籽粗脂肪含量为39.33%,粗蛋白含量为17.97%;提取的白木通籽油酸价1.28mg KOH/g,过氧化值0.57mmol/kg,p-茴香胺值4.15,碘值74.12g/100g,皂化值198.6mg KOH/g;白木通籽油富含棕榈酸、油酸和亚油酸,总量高达93.73%;白木通籽油的紫外最大吸收波长为212nm,在220℃以下时热氧化稳定性较好。The physico-chemical properties and thermal oxidation stability of Akebia trifoliata var.australis seed oil extracted by hexane was evaluated in this paper.The results showed that the contents of crude fat and protein in the seeds of Akebia trifoliata var.australis were 39.33% and 17.97%,respectively.The acid value,peroxide value,p-anisidine value,iodine value and saponification value of the extracted oil were 1.28 mgKOH/g,0.57 mmol/kg,4.15,74.12 gI2/100 g and 198.6 mg KOH/g,respectively.Gas chromatographic analysis indicated that the seed oil was rich in palmitinic acid,oleinic acid and linoleic acid,which altogether accounted for 93.73% of total fatty acids.In addition,the extracted oil revealed an absorption maximum at 212 nm and excellent thermal oxidation stability below 220 ℃.

关 键 词：白木通籽油 理化指标 紫外光谱 红外光谱 脂肪酸 热氧化稳定性 

分 类 号：TQ646[化学工程—精细化工]