[Effect of water activity on the growth of the xerophilic mold Eurotium herbariorum].
The influence of water activity (aw) on growth of a xerophilic mold isolated from dried figs and identified as Eurotium herbariorum was studied on culture media of aw adjusted with sucrose or glycerol. Rate of radial growth (kr) and lag period were the kinetic parameters analyzed. Fungal growth was inhibited at aw > 0.97. In the presence of sucrose, optimum growth was found in M6OY agar (malt agar with yeast extract and 60% W/V of sucrose, aw = 0.95). On glycerol (aw ranging from 0.65 to 0.90) the fungus did not grow at aw < 0.80. Sucrose supported better growth than glycerol at aw 0.90.
Vaamonde
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Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina.
Fernández Pinto
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VE
D001203:Ascomycota / Q000254:growth & development* / Q000302:isolation & purification; D003470:Culture Media / Q000494:pharmacology; D003890:Desiccation; D005516:Food Microbiology; D005519:Food Preservation; D005638:Fruit / Q000382:microbiology*; D005990:Glycerol / Q000494:pharmacology; D006813:Humidity; D013395:Sucrose / Q000494:pharmacology; D013696:Temperature; D014867:Water
D003470:Culture Media; D014867:Water; D013395:Sucrose; D005990:Glycerol
Influencia de la actividad de agua en el crecimiento del hongo xerofílico Eurotium herbariorum.