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propeptone
propeptone n.
Brit. 
/prə(ʊ)ˈpɛptəʊn/
, /prə(ʊ)ˈpɛptəʊn/U.S. /proʊˈpɛpˌtoʊn/
Biochemistry (now rare) an intermediate product in the formation of (a) peptone by partial digestion of protein./proʊˈpɛpˌtoʊn/ΘΚΠ
the world > life > the body > secretory organs > secretion > gastric juice > [noun] > substance in
pepsin1844
pepsinogen1877
rennin1889
propeptone1890
thrombogen1890
intrinsic factor1930
1890 Cent. Dict. Propeptone, one of the first products of peptic and tryptic digestion.
1897 T. C. Allbutt et al. Syst. Med. III. 292 The action of the gastric juice upon the albuminous constituents of the food is indicated by the presence of syntonin, propeptone and peptone.
1917 H. S. Carter et al. Nutrition & Clin. Dietetics xxxii. 564 The attempt has been made to introduce protein in almost every conceivable form, as egg albumen, chopped meat and pancreas, beef juice, milk, peptone, propeptone, and amino-acids.
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