单词 | parapeptone |
释义 | > as lemmasparapeptone parapeptone n. Brit. /ˌparəˈpɛptəʊn/ , U.S. /ˌpɛrəˈpɛpˌtoʊn/ [ < para- prefix1 + peptone n., after German Parapepton (G. Meissner 1859, in Zeitschr. f. rationelle Med. 7 2)] now rare an intermediate in the production of a peptone by the incomplete digestion of a protein.ΚΠ 1862 Q. Jrnl. Chem. Soc. 14 260 Parapeptone is obtained by neutralising with potash a solution containing hydrochloric acid and pepsine. 1873 C. H. Ralfe Outl. Physiol. Chem. 132 Parapeptone is now generally regarded as identical with syntonin, or acid-albumin. 1903 E. F. Willoughby Milk x. 163 The partial peptonisation of the casein and albumen, which are converted into parapeptone and peptone respectively. < as lemmas |
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