An Application of the Lyophile Process to the Maintenance of Cultures for Microbiological Assay

Abstract

The lyophile process, as applied to microbiological assay organisms (Lactobacillus arabinosus 17-5 and L. casei e), results in a saving of time, labor and culture materials, since it obviates the prepn. of agar stabs and broths and also the frequent transfer of the cultures necessary to maintain highly liable cells. It also improves the re-producibility of the assay curves in so far as they are influenced by the bact. cultures.