脱胶方法对普洱茶果油中金属离子浓度影响  

Effect of degumming methods on metal ion concentration in puer tea fruit oil

作　　者：史云东[1] 李祥[2] 贾琳[1] 

机构地区：[1]玉溪师范学院,云南玉溪653100 [2]陕西科技大学化工学院,陕西西安710021

出　　处：《粮食与油脂》2009年第7期19-20,共2页Cereals & Oils

基　　金：云南省自然科学基金项目:茶籽中生物活性物质的提取研究(2005B0079M)

摘　　要：普洱茶果油中金属离子，是引起普洱茶果油酸败、高温褐变主要原因。为有效降低普洱茶果油中金属离子浓度，采用火焰原子吸收光谱法，比较水化脱胶、磷酸脱胶、柠檬酸脱胶法获得脱胶茶果油中铁、铜、锰、镁等金属离子含量；结果表明，磷酸脱胶对金属离子去除效果最好，该测定方法相对标准偏差为0．5～7．7，回收率为80．1％～127．05％。The cause of fat rancidity and browning in high temperature is metal ions in puer tea fruit oil. In order to effectively reduce the concentration of metal ions, Compared the concentration of Fe, Cu, Mn, Mg in tea fruit oil, which obtained by hydration degumming, acid degumming, citric acid degumming method, using flame atomic absorption spectrometry. The results showed that phosphoric acid degumming can effectively remove metal ions.The relative standard deviation is 0.5-7.7, the recovery rate is 80.1%- 127.05%, the data is reliable.

关 键 词：普洱茶果油 脱胶方法 金属离子 

分 类 号：TS224.6[轻工技术与工程—粮食、油脂及植物蛋白工程]