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Status of Benzoic Acid Amount During Processing From Yoghurt to Its By-Product Drink (Doogh)



Esfandiari Z1 ; Saraji M2 ; Madani RA1 ; Jahanmard E1
Authors
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Authors Affiliations
  1. 1. Department of Research and Development, Isfahan University of Medical Sciences, Isfahan, Iran
  2. 2. Department of Chemistry, Faculty of Chemistry, Isfahan University of Technology, Isfahan, Iran

Source: Italian Journal of Food Science Published:2016

Abstract

The addition of benzoic acid is forbidden in by-product drink of yoghurt Doogh in Iran. However, this preservative can be naturally found in milk and its products. A total of 24 and 48 samples of yoghurt and Doogh were analyzed by HPLC method to assess the natural and permitted amount of benzoic acid. All samples of yoghurt and Doogh contained benzoic acid in mean amount of 1.5-5.0 mg/kg and 0.8-4.7 mg/L, respectively. These findings showed that the amount of 6 mg/L can be defined for benzoic acid as admissible limit for Doogh in Iran.