粮油食品科技
气相色谱法同时快速测定食品中丙酸、山梨酸、苯甲酸及脱氢乙酸
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Simultaneous and rapid determination of propionic acid, sorbic acid,benzoic acid and dehydroacetic acid in food by gas chromatography
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    摘要:

    通过液液萃取净化样品研究,建立了食品中丙酸、山梨酸、苯甲酸、脱氢乙酸及其盐含量气相色谱同时快速测定方法,适用于固体非酯(脂)类食品的检测。结果表明:丙酸的回收率在85.1%~91.3%之间,其余3种防腐剂的回收率均在95.2%~99.4%之间;实验室内变异系数(CV,n=6)最大值≤4.7%,4种防腐剂检出限均在0.002g/kg 以下。4种目标物在有杂质干扰时,可用不同的极性毛细管柱做进一步的确认。本方法具有适用范围广、检测效率高、重现性好、准确度高、检出限低的特点,推广应用对我国食品安全的监督检验具有重要的意义。

    Abstract:

    The method of simultaneous and rapid determination of propionic acid, sorbic acid, benzoic acid, dehydroacetic acid and their corresponding salt content in food by gas chromatography was established by liquid-liquid extraction purification, which was applicable to the detection of solid non ester kind food. The result showed that the recovery rate of propionic acid was 85.1%~91.3%, the average recovery of the other three kinds of preservatives was 95.2%~99.4%; the maximum coefficients of variation (CV, n=6) in laboratory were less than or equal to 4.7%; the detection limit of the four kinds of preservatives were all below 0.002g/kg. With the interference of impurity, they can be further confirmed by different polar capillary column. The method has the advantages of wide application range, high detection efficiency, good reproducibility, high accuracy and low detection limit, and the application is of great significance for the supervision and inspection of food safety in China.

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高海军,范自营,张红云,高敬铭,郭 静.气相色谱法同时快速测定食品中丙酸、山梨酸、苯甲酸及脱氢乙酸[J].粮油食品科技,2017,25(5):47-51.

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  • 在线发布日期: 2017-09-25
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