The effect of chestnuts extracts on acidity, peroxide and microbial load of mayonnaise sauce

It is very important to observe hygienic principles in the production of mayonnaise, as a nutritious and popular product, as well as to prevent physical, chemical, microbial spoilage and thus prevent its quality reduction. In this study, we tried to evaluate the efficiency of extracting aqueous extract of chestnut fruit as a natural antioxidant. For this purpose, Samples of mayonnaise with different concentrations of the extract were prepared under treatments B1 (mayonnaise + 750 ppm sodium benzoate + 750 ppm sodium sorbate), B2 (mayonnaise + 400 ppm chestnut extract + 500 ppm sodium benzoate + ppm sodium + ppm) B3 (mayonnaise +800 ppm chestnut extract +500 ppm sodium benzoate + 500 ppm sodium sorbate) and B4 (mayonnaise + 1200 ppm chestnut extract). Chemical factors (acidity and peroxide number), microbial, and sensory factors (general acceptance) were examined for the 6 months (first day, the second month, the fourth month, and the sixth month).  The results showed that the extraction efficiency of the extract by the aqueous method was equal to 22.5%. According to the results, Chestnut fruit extract with benzoate and sodium sorbate significantly reduced peroxide and acid index in the samples (p<0.05). The antimicrobial effect of chestnut fruit extract is confirmed on a significant reduction in microbial population and shelf life of mayonnaise. Sample B3 was introduced as the superior treatment in this study by considering sensory factors (general acceptance).