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Analysis of preservative additives in food by Agilent 7820A GC

Abstract: Preservatives have been widely used as additives in various types of foods to prevent deterioration while extending the shelf life, but excessive consumption is harmful to human health. The Agilent 7820A GC system offers an efficient and easyto-use platform to identify preservatives in food and determine their quantity. In this application, an Agilent 7820A GC configured with a split/splitless capillary inlet and a flame ionization detector (FID) analyzes seven most commonly used preservatives including sorbic acid, dehydroacetic acid, benzoic acid, methyl 4-hydroxybenzoate (C8H8O3), ethyl 4-hydroxybenzoate (C9H10O3), propyl 4-hydroxybenzoate (C10H12O3), and butyl 4-hydroxybenzoate (C11H14O3) in juice and soybean sauce. EZChrom Elite Compact software is used to control the Agilent 7820A GC system and provide data acquisition/data analysis. The Agilent 7820A GC system supports an automatic liquid sampler (ALS) which allows fully unattended operation from injection all the way through final reporting.

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