Analysis of Benzoic Acid, Sorbic Acid and Dehydroacetic Acid

Download PDF August 19, 2022


Among the food additives, there are several food preservatives. While many of them are toxic, they have a function to inhibit proliferation of various micro organisms which cause food to rot. Accordingly, the usage of such preservatives is limited and the target foods are regulated by the Food Sanitation Law.

This report describes the analysis of three kinds of food preservatives, Benzoic Acid, Sorbic Acid and Dehydroacetic Acid, according to the testing method for food additives described in the Standard methods of Analysis for Hygienic Chemistry.

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Fig. 1 Show the structure of each preservatives


The chromatogram of standard mixture displayed in Fig. 2 shows a good separation of the three components within 9 minutes.

About the Author

Keisuke Watanabe