A Note on the Significance of Gelatin for Bacterial Growth

Publisher Website
Google Scholar
Abstract
For pneumococ-cus growth, relatively complex protein decomposition products, which may be supplied by bacteriological peptones (preferably with low free amino-acid content) or by hydrolyzed gelatin, are required. Addition of purified gelatin, which apparently is not assimilated by the organism, will allow or increase growth of pneumococcus in peptone water or bouillon. In "Gold Label" gelatin there are important impurities which are dialyzable and not destroyed by incineration; Ringer-Locke solution may be substituted for these impurities. Two strains of Bacillus diphtheriae grew in 3 % gelatin-peptone but not in either bouillon or peptone water. Better growth of meningococcus and of 2 strains of streptococcus was obtained in gelatin-peptone than in bouillon or peptone water.

This publication has 0 references indexed in Scilit: