Escribano_2018_J.Vet.Med.Sci_80_1657

Stability of alpha-amylase (alpha-A), butyrylcholinesterase (BChE), lipase, adenosine deaminase (ADA) and total esterase activity (TEA) in two pools of porcine saliva was studied after 1 and 4 days at 4 degrees C, and after 30, 90 and 360 days at -20 degrees and -80 degrees C. At 4 degrees C, BChE, lipase and TEA were stable less than 1 day, alpha-A less than 4 days and ADA for up to 4 days. At -20 degrees C, BChE and TEA were stable less than 30 days, alpha-A and lipase less than 90 days and ADA up to 360 days. At -80 degrees C, TEA was stable less than 30 days, alpha-A and lipase less than 360 days, and BChE and ADA for up to 360 days.