- an enzyme in the saliva that converts starch into dextrin and maltose.
Origin of ptyalin
1835–45; < Greek ptýal(on) spittle, saliva + -in2
Also called salivary amylase.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- biochem an amylase secreted in the saliva of man and other animals
C19: from Greek ptualon saliva, from ptuein to spit
- An amylase present in saliva that catalyzes the hydrolysis of starch into maltose and dextrin.
- An enzyme found in the saliva of humans and herbivorous animals that helps in the predigestion of starches. Ptyalin is a type of amylase.