Sabouraud’s agar

Definition

Sabouraud's agar is a specialized fungal growth medium used to cultivate dermatophytes and other types of fungi. It has a slightly acidic pH, which inhibits bacterial growth while promoting fungal development.

5 Must Know Facts For Your Next Test

1. Sabouraud's agar typically contains peptones, dextrose, and agar.
2. The medium is often supplemented with antibiotics to further inhibit bacterial contamination.
3. It was developed by French dermatologist Raymond Sabouraud in the late 19th century.
4. Sabouraud's agar is particularly useful for isolating fungi from clinical specimens such as skin, hair, and nails.
5. Its low pH (around 5.6) makes it selective for fungi over bacteria.

Review Questions

• What are the primary components of Sabouraud's agar?
• Why does Sabouraud's agar have an acidic pH?
• For what types of samples is Sabouraud's agar most commonly used?

Related terms

Dermatophytes: A group of fungi that cause infections of the skin, hair, and nails.

Peptones: Protein fragments that provide nitrogen and nutrients in culture media.

Agar: A gelatinous substance derived from seaweed used as a solidifying agent in culture media.