Esterolytic Activity of Certain Alimentary and Related Tissues from Cattle in Different Age Groups

This investigation had as its objectives additional information relative to the location of the tissues from which pregastric esterase originates in the bovine and to study the effect of age of the animal upon this enzyme system. Extracts from animals of three age groups were prepared (8 to 36 hours, 2 to 3 months, and 1 to 3 years). The four areas from which pregastric esterase is most likely to originate were found to be the vallate papillae region of the tongue, the glosso-epiglottic area, the pharyngeal end of the esophagus, and the submaxillary salivary gland. Editor.