%peptone%

n. (Physiol. Chem.) A product of gastric and pancreatic digestion, differing from hemipeptone in not being decomposed by the continued action of pancreatic juice. [ 1913 Webster ]

n. [ Pref. dys- + peptone. ] (Physiol. Chem.) An insoluble albuminous body formed from casein and other proteid substances by the action of gastric juice. Meissner. [ 1913 Webster ]

n. [ Hemi- + peptone. ] (Physiol. Chem.) A product of the gastric and pancreatic digestion of albuminous matter. [ 1913 Webster ]

☞ Unlike antipeptone it is convertible into leucin and tyrosin, by the continued action of pancreatic juice. See Peptone. It is also formed from hemialbumose and albumin by the action of boiling dilute sulphuric acid. [ 1913 Webster ]

n. [ Pref. meta- + peptone. ] (Physiol. Chem.) An intermediate product formed in the gastric digestion of albuminous matter. [ 1913 Webster ]

n. [ Pref. para- + peptone. ] (Phisiol. Chem.) A proteinaceous body formed in small quantity by the peptic digestion of proteids. It can be converted into peptone by pancreatic juice, but not by gastric juice. [ 1913 Webster ]

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 ]

☞ 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 ]