Direct identification of the common cheese contaminant Penicillium commune in factory air samples as an aid to factory hygiene.
Creatine sucrose dichloran agar (CREAD) was used as a selective medium for Penicillium commune and related species found in air samples in a cheese factory. Using growth and simple colony characters on CREAD together with detection of indole metabolites with a filter paper method, it was possible to identify all 22 P. commune isolates from a total of 43 Penicillium isolates. Penicillium commune numbers on CREAD were compared with those found on a general isolation medium, dichloran 18% glycerol agar.
Lund
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Department of Biotechnology, Technical University of Denmark, Lyngby, Denmark.
D000391:Air Microbiology; D000814:Aniline Compounds; D002611:Cheese / Q000382:microbiology*; D015169:Colony Count, Microbial; D003401:Creatine; D003470:Culture Media; D005525:Food-Processing Industry; D007211:Indoles / Q000378:metabolism; D010407:Penicillium / Q000254:growth & development / Q000302:isolation & purification*; D013395:Sucrose
D000814:Aniline Compounds; D003470:Culture Media; D007211:Indoles; D013395:Sucrose; C004354:dicloran; D003401:Creatine