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An unorganized proteolytic ferment or enzyme contained in the secretory glands of the stomach. In the gastric juice it is united with dilute hydrochloric acid (0.2 per cent, approximately) and the two together constitute the active portion of the digestive fluid. It is the active agent in the gastric juice of all anima…

Same as Peptohydrochloric.

The antecedent of the ferment pepsin. A substance contained in the form of granules in the peptic cells of the gastric glands. It is readily convertible into pepsin. Also called propepsin.

Pepsin modified by exposure to a temperature of from 40º to 60º C.

See Persinogen.

pound or class of compounds formed from albumin by dilute acids or by an acid solution of pepsin. Used also in combination, as antialbumose, hemialbumose.

amework which remains when the soluble part (granulose) of starch is removed by saliva or pepsin. Goodale.

Of or pertaining to an acid more generally called pepsin- hydrochloric acid.

It is very insoluble in most fluids, but is gradually dissolved when digested with either pepsin or trypsin.

istinction from an organized or living ferment; a soluble, or chemical, ferment. Ptyalin, pepsin, diastase, and rennet are good examples of enzymes.

tated by alcohol. In action they are catalytic and, mainly, hydrolytic. Good examples are pepsin of the dastric juice, ptyalin of the salvia, and disease of malt. globular proteins, capable of catalyzing a wide variety of chemical reactions, not merely hydrolytic. The full set of enzymes causing production of ethyl alc…

s membrane of the stomach. It consists mainly of dilute hydrochloric acid and the ferment pepsin. It is the most important digestive fluid in the body, but acts only on proteid foods. -- Gastric remittent fever (Med.), a form of remittent fever with pronounced stomach symptoms.

Pertaining to pepsin; resembling pepsin in its power of digesting or dissolving albuminous matter; containing or yielding pepsin, or a body of like properties; as, the peptic glands.

Designating a hypothetical acid (called peptohydrochloric acid, pepsinhydrochloric acid, and chloropeptic acid) which is supposed to be formed when pepsin and dilute (0.1-0.4 per cent) hydrochloric acid are mixed together.

A toxic alkaloid found occasionally associated with the peptones formed from fibrin by pepsinhydrochloric acid.

A proteolytic ferment, or enzyme, present in the pancreatic juice. Unlike the pepsin of the gastric juice, it acts in a neutral or alkaline fluid, and not only converts the albuminous matter of the food into soluble peptones, but also, in part, into leucin and tyrosin.