Oxgall (Bovine bile, Bacteriological ox bile)

Oxgall is a purified, dried form of ox bile used in bacteriological media formulations for gastro-intestinal tract organisms, eg, enterocossel agar. Bile is composed of fatty acids, bile acids, inorganic salts, sulfates, bile pigments, cholesterol, mucin, lecithin, glycuronicacids, porphyrins, and urea. The use of Oxbile insures a regular supply of bile, and uniformity impossible to obtain with fresh materials. Oxbile is dehydrated fresh bile and prepared specifically for differentiation of bile tolerant microorganisms. A 10% solution of dehydrated bile is equivalent to a fresh bile solution. It is usually incorporated into media e.g., Bile Esculin Agar and Brilliant Green Bile Agar, used for the determination of enteric pathogens. Oxbile is also found in Littman Agar, a selective fungal medium. Oxbile is used as a selective agent for the isolation of Gram-negative microorganisms, inhibiting Gram-positive bacteria. The major composition of Oxbile is taurocholic and glycocholic acids. , Synonyms:, Bovine bile, Bacteriological ox bile, CAS No: 8008-63-7, Source: Bovine bile, Appearance: Straw to beige or tan, free-flowing homogeneous powder, Solubility (2%): Gold/greenish to amber, clear, complete, pH (2%): 7.0-8.5, Loss on Drying: <6%, Total Bile Acids: >50%, Storage and Stability: Store powder at 4°C. Opened bottles should be capped tightly and kept in a dark, low humidity environment. Stable for 6 months after receipt. Protect from moisture and light by keeping container tightly closed. Certificate of Origin: USA