Determination of Sorbic Acid and Benzoic Acid in Foods Using Multi-sample Simultaneous Extraction-gas Chromatography
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Abstract:
A novel method for determination of sorbic acid and benzoic acid in food was developed using multi-sample simultaneous extraction-gas chromatography. The samples and standard series solution were extracted simultaneously, with a mixture of ethyl acetate and hexane (1+1) as extraction solvent. The contents of sorbic acid and benzoic acid were measured by SE-30 wide caliber capillary. In the selected conditions, the detection limit for sorbic acid and benzoic acid was 1 mg/kg, the linear range was 25~500 mg/kg, the recoveries was 93.2~102.4% and the RSD was 1.9~4.1%. The method was simple, rapid, easy control and low-cost. It can be used for the rapid quantitative analysis of batch sample.
