RAPPAPORT SOY BROTH (VASSILIADIS) (ISO 6579) 500 grams/bottle

Rappaport Soy Broth (Vassiliadis) is recommended by ISO 6579 and ISO 19250, after the preenrichment step, for the selective isolation of Salmonella spp. Rappaport medium was modified by Vassiliadis by reducing Malachite green concentration and increasing incubation temperature, thus offering a better stability of the pH of the prepared medium and optimizing the concentration of Magnesium chloride, resulting in an improved recovery of Salmonellae. Soy peptone provides nitrogen, vitamins, minerals and amino acids essential for growth. Potassium phosphates balance the low pH of the medium, combined with the presence of Magnesium chloride to raise the osmotic pressure, and Malachite green to inhibit other organisms. Sodium chloride supplies essential electrolytes for transport and osmotic balance.