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Abstract:

Germination and growth of Wallemia sebi were examined on media of aw adjusted with glycerol in the range of 0.96-0.77, at 25°C and 30°C. The effect of temperature on the germination time was significant except between 0.95 and 0.88aw. At low aw levels as well as above 0.95, the increase of temperature produced an increment in the germination time. The minimum aw for germination was also affected by temperature, being lower at 25°C (0.80 aw) than at 30°C (0.82 aw). Radial growth rates at 25°C were higher than at 30°C. The optimum aw value for growth of W. sebi was 0.94 at both temperatures. The minimum aw for growth was higher than minimum for germination and was also dependent on temperature (0.84 at 25°C and 0.86 at 30°C). An empirical mathematical model was fitted to the measured growth data, providing a good approach to the description of the effect of aw on the radial growth rate of W. sebi. © 2001 Elsevier Science B.V. All rights reserved.

Registro:

Documento: Artículo
Título:Influence of water activity and temperature on the growth of Wallemia sebi: Application of a predictive model
Autor:Patriarca, A.; Vaamonde, G.; Fernández Pinto, V.; Comerio, R.
Filiación:Departamento de Química Orgánica, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina
Palabras clave:Growth; Predictive microbiology; Temperature; Wallemia; Water activity; glycerol; water; article; controlled study; culture medium; food contamination; fungus growth; germination; mathematical model; mould; nonhuman; temperature sensitivity; wallemia sebi; Culture Media; Food Contamination; Food Microbiology; Germination; Mitosporic Fungi; Models, Theoretical; Temperature; Time Factors; Water
Año:2001
Volumen:68
Número:1-2
Página de inicio:61
Página de fin:67
DOI: http://dx.doi.org/10.1016/S0168-1605(01)00470-6
Título revista:International Journal of Food Microbiology
Título revista abreviado:Int. J. Food Microbiol.
ISSN:01681605
CODEN:IJFMD
CAS:Culture Media; Water, 7732-18-5
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01681605_v68_n1-2_p61_Patriarca

Referencias:

  • Beuchat, L.R., Observations on the effect of recovery conditions on colony formation by Wallemia sebi and Chrysosporium farinicola (1992) Modern Methods in Food Mycology, pp. 127-131. , Samson R.A., Hocking, A.D., Pitt, J.I., King A.D. (Eds.), Elsevier, Amsterdam
  • Gibson, A.M., Baranyi, J.I., Pitt, J.I., Eyles, M.J., Roberts, T.A., Predicting fungal growth: The effect of water activity on Aspergillus flavus and related species (1994) Int. J. Food Microbiol., 23, pp. 419-431
  • Hocking, A.D., Miscamble, B.F., Water relations of some Zygomycetes isolated from food (1995) Mycol. Res., 99, pp. 1113-1115
  • Horner, K.J., Anagnostopoulos, G.D., Combined effects of water activity, pH and temperature on the growth and spoilage potential of fungi (1973) J. Appl. Bacteriol., 36, pp. 427-436
  • Northolt, M.D., (1979) The effect of water activity and temperature on the production of some mycotoxins. Proefschrift ter verkrijging van de graad van doctor in de landbouwwetenschappen, , Landbouwhogeschool te Wageningen. Germany
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  • Vigo, M.S., Chirife, J., Scorza, O.C., Cattaneo, P., Bertoni, M.H., Sarrailh, P., Estudios sobre alimentos tradicionales de humedad intermedia elaborados en la Argentina. Determinación de la actividad acuosa, pH, humedad y sólidos solubles (1981) Rev. Agroquim. Tecnol. Aliment., 21, pp. 91-99
  • Wheeler, K.A., Hocking, A.D., Pitt, J.I., Effects of temperature and water activity on germination and growth of Wallemia sebi (1988) Trans. Br. Mycol. Soc., 90, pp. 365-368
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Citas:

---------- APA ----------
Patriarca, A., Vaamonde, G., Fernández Pinto, V. & Comerio, R. (2001) . Influence of water activity and temperature on the growth of Wallemia sebi: Application of a predictive model. International Journal of Food Microbiology, 68(1-2), 61-67.
http://dx.doi.org/10.1016/S0168-1605(01)00470-6
---------- CHICAGO ----------
Patriarca, A., Vaamonde, G., Fernández Pinto, V., Comerio, R. "Influence of water activity and temperature on the growth of Wallemia sebi: Application of a predictive model" . International Journal of Food Microbiology 68, no. 1-2 (2001) : 61-67.
http://dx.doi.org/10.1016/S0168-1605(01)00470-6
---------- MLA ----------
Patriarca, A., Vaamonde, G., Fernández Pinto, V., Comerio, R. "Influence of water activity and temperature on the growth of Wallemia sebi: Application of a predictive model" . International Journal of Food Microbiology, vol. 68, no. 1-2, 2001, pp. 61-67.
http://dx.doi.org/10.1016/S0168-1605(01)00470-6
---------- VANCOUVER ----------
Patriarca, A., Vaamonde, G., Fernández Pinto, V., Comerio, R. Influence of water activity and temperature on the growth of Wallemia sebi: Application of a predictive model. Int. J. Food Microbiol. 2001;68(1-2):61-67.
http://dx.doi.org/10.1016/S0168-1605(01)00470-6