Abstract:
The water activity lowering behavior of sodium lactate, lactic acid, and other related hydroxy acids as well as its sodium salts, has been experimentally determined. The results for the sodium salts were very well fitted to Bromley's (1973) model for aw in aqueous solutions of strong electrolytes, while the aw, data for the acids were very well described by Norrish's (1966) equation. It was found that sodium lactate does not present any exceptional negative deviation from Raoult's law as it has been reported in the literature. The B number for sodium lactate (0.050 kg/mol−1) was found to be somewhat lower than that corresponding to sodium chloride. Moreover, lactic acid was found to have a small positive deviation from Raoult's law. Copyright © 1980, Wiley Blackwell. All rights reserved
Registro:
Documento: |
Artículo
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Título: | PREDICTION OF WATER ACTIVITY OF AQUEOUS SOLUTIONS IN CONNECTION WITH INTERMEDIATE MOISTURE FOODS: EXPERIMENTAL INVESTIGATION OF THE aw LOWERING BEHAVIOR OF SODIUM LACTATE AND SOME RELATED COMPOUNDS |
Autor: | CHIRIFE, J.; FONTAN, C.F. |
Filiación: | Departmento de Industrias, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Núñz, Buenos Aires, 1428, Argentina The Departamento de Fisica, Facultad de Ciencias Exactas Y Naturales, Universidad de Buenos Aires, Argentina Consejo National de Investigaciones Científicas y Téhnicas
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Año: | 1980
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Volumen: | 45
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Número: | 4
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Página de inicio: | 802
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Página de fin: | 804
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DOI: |
http://dx.doi.org/10.1111/j.1365-2621.1980.tb07453.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_v45_n4_p802_CHIRIFE |
Referencias:
- Benmergui, E.A., Ferro Fontán, C., Chirife, J., The prediction of water activity in aqueous solutions in connection with intermediate moisture foods. 1. aw prediction in single aqueous electrolyte solutions (1979) J. Food Technology
- Bromley, L.A., Thermodynamic properties of strong electrolytes & I aqueous solutions (1973) AIChE Journal, 19, p. 313
- Chirife, J., Ferro Fontán, C., Benmergui, E.A., The prediction of water activity of aqueous solutions in connection with intermediate moisture foods. 4. aw predictions in aqueous non‐electrolyte solutions (1979) J. Food Technology
- Ferro Fontán, C., Chirife, J., Benmergui, E.A., The prediction of water activity of aqueous solutions in connection with intermediate moisture foods. 2. On the choice of the best a lowering single strong electrolyte (1979) J. Food Technology
- Iglesias, H.A., (1975) Departamento de Industrias, Facultad de Ciencias Exactas y Naturales, , Thesis, Universidad de Buenos Aires, Buenos Aires, Argentina
- Labuza, T.P., Kreisman, L.N., Heinz, C.A., Lewicki, P.P., Evaluation of the Abbeon cup analyzer, compared to the VPM and Fett‐Vos methods for water activity measurement (1977) J. Food Processing & Preserv., 1, p. 31
- Loncin, M., Basic principles of moisture equilibria (1975) Freeze Drying and Advanced Food Technology;, p. 599. , Goldblith, S.A., Rey, L., Rothmayr, W.W., Academic Press, New York
- Norrish, R.S., An equation for the activity coefficient and equilibrium relative humidities of water in confectionery syrups (1966) J. Food Technol., 1, p. 25
- Stoloff, L., Calibration of water activity measuring instruments and devices: Collaborative study (1978) J. Assoc. Off. Anal. Chem., 61, p. 1166
- Teng, T.T., Lenzi, F., Water activity data representation bf aqueous solutions at 25°C. The Can (1974) The Canadian Journal of Chemical Engineering, 52, p. 387
- (1975), Ninteenth edition
Citas:
---------- APA ----------
CHIRIFE, J. & FONTAN, C.F.
(1980)
. PREDICTION OF WATER ACTIVITY OF AQUEOUS SOLUTIONS IN CONNECTION WITH INTERMEDIATE MOISTURE FOODS: EXPERIMENTAL INVESTIGATION OF THE aw LOWERING BEHAVIOR OF SODIUM LACTATE AND SOME RELATED COMPOUNDS. Journal of Food Science, 45(4), 802-804.
http://dx.doi.org/10.1111/j.1365-2621.1980.tb07453.x---------- CHICAGO ----------
CHIRIFE, J., FONTAN, C.F.
"PREDICTION OF WATER ACTIVITY OF AQUEOUS SOLUTIONS IN CONNECTION WITH INTERMEDIATE MOISTURE FOODS: EXPERIMENTAL INVESTIGATION OF THE aw LOWERING BEHAVIOR OF SODIUM LACTATE AND SOME RELATED COMPOUNDS"
. Journal of Food Science 45, no. 4
(1980) : 802-804.
http://dx.doi.org/10.1111/j.1365-2621.1980.tb07453.x---------- MLA ----------
CHIRIFE, J., FONTAN, C.F.
"PREDICTION OF WATER ACTIVITY OF AQUEOUS SOLUTIONS IN CONNECTION WITH INTERMEDIATE MOISTURE FOODS: EXPERIMENTAL INVESTIGATION OF THE aw LOWERING BEHAVIOR OF SODIUM LACTATE AND SOME RELATED COMPOUNDS"
. Journal of Food Science, vol. 45, no. 4, 1980, pp. 802-804.
http://dx.doi.org/10.1111/j.1365-2621.1980.tb07453.x---------- VANCOUVER ----------
CHIRIFE, J., FONTAN, C.F. PREDICTION OF WATER ACTIVITY OF AQUEOUS SOLUTIONS IN CONNECTION WITH INTERMEDIATE MOISTURE FOODS: EXPERIMENTAL INVESTIGATION OF THE aw LOWERING BEHAVIOR OF SODIUM LACTATE AND SOME RELATED COMPOUNDS. J. Food. Sci. 1980;45(4):802-804.
http://dx.doi.org/10.1111/j.1365-2621.1980.tb07453.x