| 释义 |
gramicidin Chem.|græmɪˈsaɪdɪn|
[f. Gram3 + -i + -cide + -in1.]
Any of several polypeptides produced by Bacillus brevis which have antibiotic properties, esp. against Gram-positive bacteria, and are used externally to treat local infections; orig. considered a single compound.
1940Hotchkiss & Dubos in Jrnl. Biol. Chem. CXXXII. 791 Three crystalline preparations highly bactericidal for Gram-positive microorganisms have been obtained... The third substance, which we have named gramicidin, is concentrated by repeatedly recovering the fraction which remains soluble in alcohol. 1967Hunter & Schwartz in Gottlieb & Shaw Antibiotics I. 642 Counter⁓current distribution techniques resolved gramicidin into four groups of polypeptides now specifically designated as gramicidins A, B, C, D. 1969New Scientist 10 July 65/2 The antibiotics which are produced include..gramicidin and tyrocidin. |