文档介绍：现代食品科技 Modern Food Science and Technology 2012, ,

傅立叶变换红外光谱法鉴别地沟油的研究

许洪勇,成莲,王东峰,曾石峭,殷兆平,徐育成
(河源市质量计量监督检测所,广东河源 517000)
摘要:利用傅立叶变换红外光谱法鉴别地沟油,实验结果表明,地沟油在波数 1711 cm-1 处有区别于食用植物油的特征吸收峰。
对于掺有地沟油的调和油,本方法可以鉴别体积分数为 10%的样品。由 GC-MS 试验推断,地沟油所测特征峰,是由羧酸类物质产生
的。
关键词:地沟油;红外光谱;特征峰;鉴别
文章篇号:1673-9078(2012)6-707-708
Identification of Recycled Cooking Oil by FT-IR
XU Hong-yong, CHENG Lian, WANG Dong-feng, ZENG Shi-qiao, YIN Zhao-ping, XU Yu-cheng
(The quality measurement supervision and inspection institute, Heyuan 517000, China)
Abstract: Fourier Transform Infrared Spectroscopy (FT-IR) was used to differentiate recycled cooking oil in this research. Results showed
that, the recycling cooking oil had characteristic absorption peak at the wave number of 1711 cm-1, which was different from fresh edible
vegetable oil. For the illegal cooking oil mixed with recycled cooking oil, the detection limit is 10%. GC-MS analysis showed that the
characteristic peak of the recycled cooking oil samples represented carboxylic acid.
Key words: drainage oil; infrared spectrum; characteristic peak; identification

地沟油属于餐饮业废弃油脂,不法分子通常是将
1 材料与方法
其按一定比例掺混至食用植物油中,假冒合格植物油
销售获利[1]。目前国内尚未制定地沟油检测的国家标材料与试剂
准,其主要原因是地沟油成分比较复杂,其检测的特地沟油,河源绿宇废油污处理有限公司;市售六
异性指标还处于研讨阶段,准确定性定量比较困难。种植物油(花生油、大豆油、玉米油、芝麻油、橄榄
傅里叶变换红外光谱法(Fourier Transform Infrared 油、调和油);正己烷(色谱纯)。
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