Microbiology Testing FAQs — Methods & Media | HiMedia USA

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What is Czapek Dox Agar used for?

Czapek Dox Agar (also Czapek's Agar) is defined synthetic medium for cultivation and identification of Aspergillus and Penicillium species. Contains sucrose as sole carbon source, sodium nitrate as nitrogen source, minimal nutrients. Used for: (1) Fungal taxonomy and identification, (2) Aspergillus species differentiation, (3) Mycology research, (4) Testing fungal nutritional requirements. Growth characteristics on Czapek Dox help identify specific species. Some fungi grow well (Aspergillus niger), others poorly or not at all (aids differentiation). Incubate 5-7 days at 25-28°C.
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What is Malt Extract Agar used for?

Malt Extract Agar is general-purpose medium for cultivation of yeasts and molds. Contains malt extract providing maltose and other nutrients. Acidic pH (5.4-5.6) favors fungi. Used for: (1) General mycology, (2) Fungal culture maintenance, (3) Environmental monitoring for mold, (4) Food mycology, (5) Brewing and fermentation industries. Similar to PDA but uses malt extract instead of potato infusion. Some fungi sporulate better on MEA than PDA. Can add antibiotics (chloramphenicol) for selective isolation. Incubate 25-28°C for 5-7 days.
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