Buffered Peptone Water (BPW)Buffered peptone water (BPW) is used for instance as non-selective pre-enrichment of Salmonella spp. The composition of BPW is peptone, NaCl, Na2HPO4.12H2O, KH2PO4 and water. Peptone is derived from animal milk or meat digested with a proteolytic enzyme. Peptone is the the sorce of carbon, nitrogen, vitamins and minerals in BPW. Sodium chloride maintains the osmotic balance and the medium is buffered with phosphates (pH = 7.2).
Updated: 2019-09-25. |