title: Violet red bile 2 agar for stressed coliforms.
abstract: Counts on a new, autoclave-sterilizable violet red bile (VRB-2) agar were compared with counts on freshly boiled VRB agar. Yields on VRB-2 agar averaged 217, 180, 130, and 112% of counts obtained on the control medium for samples of water, cottage cheese, frozen vegetables, and raw milk, respectively. The general principle used for the development of VRB-2 agar could be applied to many other kinds of selective plating media.
mesh_terms: D000362:Agar; D001647:Bile Acids and Salts; D002452:Cell Count; D004396:Coloring Agents; D004926:Escherichia coli / Q000302:isolation & purification*; D005516:Food Microbiology; D006358:Hot Temperature; D013242:Sterilization; D014871:Water Microbiology
chemical_list: D001647:Bile Acids and Salts; D004396:Coloring Agents; D000362:Agar