Selective Enrichment and Identification of Salmonella spp. Using Xylose Lysine Deoxycholate and Chromogenic Agar

Source: Yang, Z., et al. A High-throughput Platform for the Screening of Salmonella spp./Shigella spp.. J. Vis. Exp. (2018)This video demonstrates the selective enrichment and identification of Salmonella using xylose lysine deoxycholate (XLD) and chromogenic agar. Selenite broth promotes Salmonella growth, while XLD agar reveals black-centered colonies through hydrogen sulfide production. Chromogenic agar confirms the identity via enzyme-mediated pigment formation, enabling species-level identification.