单词 | putrescine |
释义 | putrescinen. Chemistry. An amine with a putrid odour, melting just above normal room temperature and formed by the putrefaction of proteins.Systematic name: 1,2-diaminobutane; H2N(CH2)4NH2. ΚΠ 1887 A. M. Brown Treat. Animal Alkaloids i. iv. 36 Putrescine C4H12N2.—Like the preceding ptomaines is obtained from the flesh of the mammifera and herring brines. 1890 J. Cagney tr. R. von Jaksch Clin. Diagnosis v. 120 These observers..established the identity of Brieger's putrescin with tetramethylendiamine. 1934 C. C. Steele Introd. Plant Biochem. v. xiii. 133 Putrescine, a liquid, is tetramethylene diamine, NH2·(CH2)4·NH2, and a characteristic product of putrefying animal protein, being derived from the amino-acid ornithine. 1974 Nature 17 May 250/1 The polyamines spermine, spermidine and their precursor putrescine occur ubiquitously and in high concentrations in animals and plants. 1992 M. Ingrouille Diversity & Evol. Land Plants 141 There are monoamines like methylamine or diamines like putrescine and cadaverine whose names are testament to their pungency. This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022). < |
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