ptyalin(redirected from Alpha-Amylase)
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A form of amylase in the saliva of humans and certain other animals that catalyzes the hydrolysis of starch into maltose and dextrin.
[Greek ptualon, saliva (from ptūein, to spit) + -in.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Biochemistry) biochem an amylase secreted in the saliva of man and other animals
[C19: from Greek ptualon saliva, from ptuein to spit]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
pty•a•lin(ˈtaɪ ə lɪn)
an enzyme in the saliva that converts starch into dextrin and maltose.
[1835–45; < Greek ptýal(on) spittle, saliva + -in1]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
An enzyme found in saliva that breaks down starches into sugars.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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|Noun||1.||ptyalin - an amylase secreted in saliva|
saliva, spittle, spit - a clear liquid secreted into the mouth by the salivary glands and mucous glands of the mouth; moistens the mouth and starts the digestion of starches
amylase - any of a group of proteins found in saliva and pancreatic juice and parts of plants; help convert starch to sugar
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