Abstract:
A theoretical approach, based on the thermodynamic properties of strong electrolyte aqueous solutions, was used to calculate the aw at 5°C and 10°C of selected saturated salt solutions frequently used as standards in the range of microbial growth. The results agreed very well with experimental measurements at both temperatures for most salts studied, which included NaBr, NaCl, SrC12, (NH4)2SO4, KCl, BaCl2, and K2SO4. For KNO3 the agreement was somewhat less satisfactory and the reasons are discussed. Copyright © 1987, Wiley Blackwell. All rights reserved
Registro:
Documento: |
Artículo
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Título: | Prediction and Measurement of the Water Activity of Selected Saturated Salt Solutions at 5°C and 10°C |
Autor: | POLLIO, M.L.; KITIC, D.; FAVETTO, G.J.; CHIRIFE, J. |
Filiación: | Dep. de Industrias, Facultad de Ciencias Exactas y Naturales, Univ. de Buenos Aires, Ciudad Universitaria, Buenos Aires, 1428, Argentina
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Año: | 1987
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Volumen: | 52
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Número: | 4
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Página de inicio: | 1118
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Página de fin: | 1119
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DOI: |
http://dx.doi.org/10.1111/j.1365-2621.1987.tb14295.x |
Título revista: | Journal of Food Science
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Título revista abreviado: | J. Food. Sci.
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ISSN: | 00221147
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00221147_v52_n4_p1118_POLLIO |
Referencias:
- Chirife, J., Favetto, G.J., Ferro Fontán, C., Resnik, S.L., The water activity of standard saturated salt solutions in the range of intermediate moisture Foods. Lebensm. Wis. (1983) u. Technol., 16, p. 36
- Kitic, D., Favetto, G.J., Chirife, J., Resnik, S.L., Measurements of water activity in the intermediate moisture range with the Novasina Thermoconstanter Humidit Meter. Lebensm. Wis (1986) u. Technol., 19, p. 297
- Kitic, D., Pereira Jardim, D.C., Favetto, G.J., Resnik, S.L., Chirife, J., Theoretical prediction of the water activity of standard saturated salt solutions at various temperatures (1986) J. Food Sci., 51, p. 1037
- Kitic, D., Resnik, S.L., Chirife, J., Solutions of lithium chloride as reference sources of water activity above 0.6 and between 5°C and 45°C. Lebens. Wis (1986) u. Technol., 19, p. 272
- Pitzer, K.S., Thermodynamics of electrolytes. I. Theoretical basis and general equations. (1973) J. Phys. Chem., 77, p. 268
- Pitzer, K.S., Mayorga, G., Thermodnamics of electrolytes. II. Activity and osmotic coefficients for strong eiectrolytes with one or both ions univalent. (1973) J. Phys. Chem., 77, p. 2300
- Silvester, L.F., Pitser, K.S., Thermodynamics of electrolytes, X. Enthalpy and the effect of temperature on the activity coefficients, (1977) J. Solution Chem., 7, p. 324
Citas:
---------- APA ----------
POLLIO, M.L., KITIC, D., FAVETTO, G.J. & CHIRIFE, J.
(1987)
. Prediction and Measurement of the Water Activity of Selected Saturated Salt Solutions at 5°C and 10°C. Journal of Food Science, 52(4), 1118-1119.
http://dx.doi.org/10.1111/j.1365-2621.1987.tb14295.x---------- CHICAGO ----------
POLLIO, M.L., KITIC, D., FAVETTO, G.J., CHIRIFE, J.
"Prediction and Measurement of the Water Activity of Selected Saturated Salt Solutions at 5°C and 10°C"
. Journal of Food Science 52, no. 4
(1987) : 1118-1119.
http://dx.doi.org/10.1111/j.1365-2621.1987.tb14295.x---------- MLA ----------
POLLIO, M.L., KITIC, D., FAVETTO, G.J., CHIRIFE, J.
"Prediction and Measurement of the Water Activity of Selected Saturated Salt Solutions at 5°C and 10°C"
. Journal of Food Science, vol. 52, no. 4, 1987, pp. 1118-1119.
http://dx.doi.org/10.1111/j.1365-2621.1987.tb14295.x---------- VANCOUVER ----------
POLLIO, M.L., KITIC, D., FAVETTO, G.J., CHIRIFE, J. Prediction and Measurement of the Water Activity of Selected Saturated Salt Solutions at 5°C and 10°C. J. Food. Sci. 1987;52(4):1118-1119.
http://dx.doi.org/10.1111/j.1365-2621.1987.tb14295.x