Sabouraud agar
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Sabouraud agar or Sabouraud dextrose agar is a type of agar growth medium containing peptones. It is used to cultivate dermatophytes and other types of fungi, and can also grow filamentous bacteria su
Bottom view of a Sabouraud agar plate with a colony of Trichophyton rubrum var. rodhaini
Sporothrix schenckii in Sabouraud agar
Candida albicans in Sabouraud agar
Trichophyton terrestre in Sabouraud agar
Trichophyton rubrum
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Trichophyton rubrum is a dermatophytic fungus in the phylum Ascomycota. It is an exclusively clonal, anthropophilic saprotroph that colonizes the upper layers of dead skin, and is the most common caus
Colonies of T. rubrum isolated from toenail (left to right): Primary isolation from scrapings on Sabouraud's dextrose agar with cycloheximide, chloramphenicol and gentamicin (14 d); Greenish colonies on Littman Oxgall agar (14 d); Restricted, red colony without pH change on Bromocresol Purple Milk Solids Glucose agar (10 d).
Colonies of T. mentagrophytes (left), T. rubrum (center) and T. violaceum (right) showing differential responses on Bromocresol Purple Milk Solids Glucose agar (7 d). T. mentagrophytes shows unrestricted growth with alkaline (purple) colour change, T. rubrum shows restricted growth with no pH change, and T. violaceum produces weak growth accompanied by clearing of the milk solids and a purple colour change.