noun[mass noun] Biochemistry
A form of amylase found in the saliva of humans and some other animals.
More example sentences
- It begins in the mouth where the enzyme ptyalin, present in saliva, begins to break down starch in food to sugars.
- The saliva of carnivora contains no ptyalin and cannot predigest starches; that of vegetarian animals contains ptyalin for the predigestion of starches.
Definition of ptyalin in:
- The US English dictionary