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Abstract:

This work reports on the experimental determination of water activity (aw) in aqueous solutions of polyethylene glycol 200, 400, and 600, respectively. The measurements were made in the aw range of most interest to intermediate moisture foods formulation (about 0.80–0.95). The observed behavior was very well fitted by Norrish's (1966) equation and a simple relationship was found between Norrish's correlating constant and molecular weight of polyethylene glycols. It was found that this relationship may be explained through a theoretical analysis of the thermodynamic behavior of macromolecules in solution. Copyright © 1980, Wiley Blackwell. All rights reserved

Registro:

Documento: Artículo
Título:A STUDY OF THE WATER ACTIVITY LOWERING BEHAVIOR OF POLYETHYLENE GLYCOLS IN THE INTERMEDIATE MOISTURE RANGE
Autor:CHIRIFE, J.; FONTAN, C.F.
Filiación:Departamento de Lndustrias, Facultad de Ciencias Exactas Y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, 1428, Argentina
Departamen to de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, 1428, Argentina
Año:1980
Volumen:45
Número:6
Página de inicio:1717
Página de fin:1719
DOI: http://dx.doi.org/10.1111/j.1365-2621.1980.tb07596.x
Título revista:Journal of Food Science
Título revista abreviado:J. Food. Sci.
ISSN:00221147
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00221147_v45_n6_p1717_CHIRIFE

Referencias:

  • Bone, D., Water activity in intermediate moisture foods (1973) Food Technol., 27 (4), p. 71
  • Champetier, G., Monnerie, L., (1973), “Introducción a la Química Macromolecular.” Espasa‐Calpe, S.A. Madrid, España; Chirife, J., Ferro Fontár, C., Benmergui, E.A., The prediction of water activity in aqueous solutions in connection with intermediate moisture foods. 4. aw prediction in aqueous non‐electrolyte solutions (1980) J. Food Technol., 15, p. 59
  • Chirife, J., Ferro Fontá, C., (1980), The prediction of water activity in aqueous solutions in connection with intermediate moisture foods. 5. Experimental investigation of the aw lowering behavior of sodium lactate and some related compounds. J. Food Sci. (In press); Chirife, J., Ferro Fontár, C., (1980), The water activity of aqueous lactulose solutions. Submitted for publication; Denbigh, K., (1964) The Principles of Chemical Equilibrium, , Cambridge Univ. Press
  • Polyethylene Glycols Handbook, p. 48640. , Dow Chemical U.S.A., Midland, MI
  • Flink, J.M., Intermediate moisture food products in the American marketplace (1978) J. Food Process. & Preserv., 2, p. 324
  • Heidelbaugh, N.D., Karel, M., Intermediate moisture food technology (1975) Freeze Drying and Adv. Food Technology, p. 618. , Goldblith, S.A., Reu, L., Rothmayr, W.W., Academic Press, London, New York, San Francisco
  • Kaplow, M., Commercial development of intermediate moisture foods (1970) Food Technol., 24, p. 889
  • Norrish, R.S., An equation for the activity coefficients and equilibrium relative humidities of water in confectionery syrups (1966) J. Food Technol., 1, p. 25
  • Rogers, J.A., Tam, T., Solution behavior of polyethylene glycols in water using vapor pressure osmometry (1977) J. Pharmaceutical Sci., 12, p. 65
  • Sloan, E.A., Labuza, T.P., Investigating alternative humectants for use in foods (1975) Food Prod. Dev., 9, p. 75

Citas:

---------- APA ----------
CHIRIFE, J. & FONTAN, C.F. (1980) . A STUDY OF THE WATER ACTIVITY LOWERING BEHAVIOR OF POLYETHYLENE GLYCOLS IN THE INTERMEDIATE MOISTURE RANGE. Journal of Food Science, 45(6), 1717-1719.
http://dx.doi.org/10.1111/j.1365-2621.1980.tb07596.x
---------- CHICAGO ----------
CHIRIFE, J., FONTAN, C.F. "A STUDY OF THE WATER ACTIVITY LOWERING BEHAVIOR OF POLYETHYLENE GLYCOLS IN THE INTERMEDIATE MOISTURE RANGE" . Journal of Food Science 45, no. 6 (1980) : 1717-1719.
http://dx.doi.org/10.1111/j.1365-2621.1980.tb07596.x
---------- MLA ----------
CHIRIFE, J., FONTAN, C.F. "A STUDY OF THE WATER ACTIVITY LOWERING BEHAVIOR OF POLYETHYLENE GLYCOLS IN THE INTERMEDIATE MOISTURE RANGE" . Journal of Food Science, vol. 45, no. 6, 1980, pp. 1717-1719.
http://dx.doi.org/10.1111/j.1365-2621.1980.tb07596.x
---------- VANCOUVER ----------
CHIRIFE, J., FONTAN, C.F. A STUDY OF THE WATER ACTIVITY LOWERING BEHAVIOR OF POLYETHYLENE GLYCOLS IN THE INTERMEDIATE MOISTURE RANGE. J. Food. Sci. 1980;45(6):1717-1719.
http://dx.doi.org/10.1111/j.1365-2621.1980.tb07596.x