| 李安，马红枣，潘立刚，王冬，梁刚，满燕.稳定同位素比值质谱法鉴别猪油中掺杂石蜡的研究初探[J].中国油脂,2017,42(03):.[LI An, MA Hongzao, PAN Ligang, WANG Dong,LIANG Gang, MAN Yan.Preliminary study on identification of paraffin in lard by stable isotope ratio mass spectrometry method[J].China Oils and Fats,2017,42(03):.] |
| 稳定同位素比值质谱法鉴别猪油中掺杂石蜡的研究初探 |
| Preliminary study on identification of paraffin in lard by stable isotope ratio mass spectrometry method |
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| DOI： |
| 中文关键词: 稳定同位素比值质谱法 δ13C值 猪油 石蜡 掺假 |
| 英文关键词:stable isotope ratio mass spectrometry δ13C value lard paraffin adulteration |
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| 中文摘要: |
| 采用元素分析仪-稳定同位素比值质谱法开展了猪油中掺杂石蜡的鉴别技术研究。以猪油为掺杂对象和工业石蜡为添加物，分析测定了不同猪油样品和不同厂家的石蜡样品中δ13C值大小，并对石蜡掺杂量与δ13C值进行了相关性分析和回归分析。猪油中δ13C值的分布范围为-21.089×10-3~-16.418×10-3，石蜡中δ13C值分布范围为-32.128×10-3~-30.713×10-3，两者存在明显差异。当石蜡添加量达到10%时，可鉴别出猪油中是否添加了石蜡，根据回归方程可对猪油中石蜡的含量进行初步估算。该方法简便快速，能为动物油脂掺假行为的监管提供技术参考。 |
| 英文摘要: |
| The identification technology of paraffin in lard was studied by the method of elemental analyzer-stable isotope ratio mass spectrometry (EA-IRMS). With lard as the adulterated object and industrial paraffin as the additive, the δ13C values of different lard samples and paraffin samples from different manufacturers were determined. Correlation and regression analysis were carried on between the paraffin dosage and δ13C values. The distribution range of δ13C value of lard was-21.089×10-3--16.418×10-3, while the distribution range of δ13C value of paraffin was-32.128×10-3--30.713×10-3. There were significant differences in the distributions of δ13C value of the two types of samples. When the dosage of paraffin reached 10%, paraffin could be identified in lard. According to the regression equation, the paraffin content in lard could be preliminarily estimated. The method had the items of simpleness and rapidness, which could provide technical reference for regulation of adulteration in animal fat. |
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