TETRATHIONATE BROTH BASE, HAJNA (TT BROTH BASE)

Tetrathionate Broth Base was first formulated by Mueller who showed that this medium favours the unrestricted growth of enteric pathogens by selectively inhibiting the coliforms. Muellers medium was subsequently modified by Kauffman and Knox in which they obtained more number of isolates. Tetrathionate Broth Base, Hajna is the modification formulated by Hajna and Damon. This medium is recommended by APHA for the selective enrichment of Salmonellae from foodstuffs. After enrichment of the sample, streak on the plates of Brilliant Green Agar, MacConkey Agar, Bismuth Sulphite Agar for further confirmation.

for enrichment and isolation of Salmonellae