Mueller Kauffman Tetrathionate Novobiocin HiCynthâ„¢ Broth Base is recommended for improved enrichment and isolation of Salmonellae. The composition and performance crieria of this media are as per the specification laid down in ISO 6579-1. This medium is prepared by replacing animal and vegetable peptones with chemically defined peptones to avoid BSE/TSE risks associated with animal peptones.