Abstract
I have proposed a novel reaction mechanism for the formation of acyl lactylate esters of fatty acids, and have determined the absolute esterification and reverse rate constants at several reaction temperatures, as well as having derived with rigor from basic physical chemistry precepts the gas-sparge dependent overall reaction rate expressions and rate constants of lactylate formation. Examples are given of acid values calculated from the derived rate expressions, compared to experimental values obtained as a function of time, during laboratory ester preparations. These fatty acid acyl lactylate esters and their salts have important commercial applications in both the food and non-food industries as emulsifiers, and their manufacture and sale is highly competitive. Therefore, an understanding of the cost versus benefit curve of sparge gas rates provided by this paper is highly desirable.
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