Butyric acid is also produced synthetically, through
fermentation of various carbohydrates, to be used as a
flavoring agent in various food products (7).
According to the reports of Heiter and his colleagues
(8), the content of butyric acid in milk fat varies
ranging between 3 and 4.6%, and for the quality
control of milk, yogurt and foodstuffs with additives
involving milk and butter the analysis of the content
is utilized.
The present research aimed to evaluate the quality of
yogurt samples prepared by commonly used probiotic
starters in Iran, by analyzing the butyric acid content
at different time intervals during consumption period.
Based on the butyric acid concentrations the most
suitable starter was identified.