INVESTIGADORES
BERTUZZI Maria Alejandra
artículos
Título:
Thermodynamic Analysis of Water Vapor Sorption of Edible Starch Based Films
Autor/es:
BERTUZZI, MARÍA ALEJANDRA; ARMADA, MARGARITA; GOTTIFREDI, JUAN CARLOS
Revista:
FOOD SCIENCE AND TECHNOLOGY INTERNATIONAL
Editorial:
SAGE PUBLICATIONS LTD
Referencias:
Año: 2003 vol. 9 p. 115 - 121
ISSN:
1082-0132
Resumen:
Moisture sorption isotherms of high amylose corn starch (HACS) films at 5, 25, 35 and 45 ºC within an approximate water activity (aw) range of 0.11 to 0.85 were obtained using a static gravimetric method. The Brunauer, Emmet and Teller (BET) model was applied to collected data giving an excellent fit. Results have shown HACS films have a type III BET behavior at all temperatures studied. From the analysis of aw relation with temperature at constant moisture content, using known thermodynamic relationships, the nature of sorbed water was investigated. Conclusions are pointed out.
