摘要
用碳同位素比值法对玉米油的掺伪进行研究。利用气相色谱-燃烧-同位素比值质谱仪获得玉米油与棕榈油主要脂肪酸的δ13C值,构建其混合油中3种主要脂肪酸的δ13C值-混合比例的标准曲线。结果表明,玉米油与棕榈油的δ13C值差异很大,把棕榈油和玉米油进行掺和,可以检出15%以上的掺伪水平。
Corn oil adulteration was studied by carbon isotope ratio niethod. The δ^13C values of the individual fatty acids in corn oil and palm oil were determined by gas chromatography -combustion -isotope ratio mass spectrometry （ GC - C - IRMS）. The standard curves between δ^13C values of the three major fatty acids and mixing ratio of corn oil and palm oil were constructed. The results showed that δ^13C values of corn oil and palm oil varied significantly. Palm oil adulterated into corn oil at 15% could be detected.
出处
《中国油脂》
CAS
CSCD
北大核心
2009年第1期73-75,共3页
China Oils and Fats
基金
2007年江苏省大学生实践创新训练计划项目资助
关键词
玉米油
棕榈油
掺伪
气相色谱-燃烧-同位素比值质谱
corn oil
palm oil
adulteration
gas chromatography - combustion - isotope ratio mass spectrometry （ GC - C - IRMS）
作者简介
金青哲（1963），男，副教授，博士，主要从事油脂化学及油脂产品方面的开发研究工作（Tel）13771180191（E-mail）jqzwuxi@163．com。
