PHENOLPHTHALEIN PHOSPHATE AGAR (VEG.)

This medium is prepared by using Veg peptone and Veg extract in place of Peptic digest of animal tissue and Beef extract which make the medium free of BSE/TSE risks. Phenolphthalein Phosphate Veg Agar is the modification of Phenolphthalein Phosphate Agar which is used for the identification of phosphatase positive colonies of Staphylococccus aureus which is a coagulase positive pathogenic strain. Phosphatase production is determined by the liberation of phenolphthalein which is indicated by the change in colour of the medium. When alkali is added to this medium, the liberated phenolphthalein gives bright pink – red colouration.

for identi?cation of phosphatase positive Staphylococcus aureus