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Principle
- Potato dextrose agar is composed of potato infusion, dextrose, chloramphenicol, and agar. Potato infusion, serve as the source of all essential nutrients such as amino acids, vitamins, and other trace elements, required for the growth of yeast and molds.
- Dextrose supplies carbon and energy source. The potato infusion is also known to encourage the sporulation and pigment production in some fungal species. The acidic pH makes the medium partially selective for the growth of fungi and inhibits the growth of bacteria.
- Chloramphenicol inhibits a wide range of gram-positive and gram-negative bacteria making the medium selective for fungi.
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