FOOD SCIENCE ›› 2007, Vol. 28 ›› Issue (8): 350-353.

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Preservatives Determination in Food of Complex Matrix by High Performance Liquid Chromatography

 PAN  Qing, WU  Zhi, YANG  Fang, ZHANG  Jing   

  1. Zhongshan Entry-Exit Inspection and Quarantine Bureau, Zhongshan 528400, China
  • Online:2007-08-15 Published:2011-10-24

Abstract: Since the benzoic and sorbic acid could be distilled in acidic condition with water vapor,a method was developed for distilling preservative from complex matrix by automatic distilling. The collected and distilled liquid was determined by high performance liquid chromatography with conditions permitted in GB/T 5009.29-2003. The method is capable to purify the sample entirely. It is rapid, accurate and suitable for assaying the food of complex matrix, such as soy sauce and moon cake, ete.

Key words: distilling, benzoic acid, sorbic acid