peptone
n . 胨
□
peptone n 1 :
any of various water -
soluble compounds that form by hydrolysis in the digestion of proteins to amino acids Peptone \
Pep "
tone \,
n . [
Gr .
pepto `
s cooked .] (
Physiol .
Chem .)
(
a )
The soluble polypeptides produced by hydrolysis of protein ;
specifically the soluble peptides into which food is transformed by the action of the gastric and pancreatic juices .
Peptones are also formed from protein matter by the action of boiling water and boiling dilute acids .
(
b )
Collectively ,
in a broader sense ,
all the products resulting from the solution of proteinaceous matter in either gastric or pancreatic juice .
In this case ,
however ,
intermediate products (
albumose bodies ),
such as antialbumose ,
hemialbumose ,
etc .,
are mixed with the true peptones .
Also termed albuminose .
[
1913 Webster PJC ]
Note :
Pure peptones are of three kinds ,
amphopeptone ,
antipeptone ,
and hemipeptone ,
and ,
unlike most proteins ,
are not precipitated by saturating their solutions with ammonium sulphate .
[
1913 Webster ]
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