Abstract:
The glass transition temperatures (Tg) of lactose hydrolyzed milk powder (HMP) was determined and compared to that of regular milk powders (MP). Some physical and chemical changes (loss of flowing ability, browning development) were also evaluated during storage of the different milk powders. Sugars of HMP (glucose, galactose, lactose) influenced, but did not define, the Tg values of the product, on the contrary lactose governed the observed Tg values of MP samples. Changes in the flowing characteristics of milk powder and color development, stored at different water activity values, were much more evident in HMP than in regular milk powder. Results suggested that the Tg value is not the unique parameter governing the flowability and color development in stored milk powders. © 2003 Swiss Society of Food Science and Technology. Published by Elsevier Science Ltd. All rights reserved.
Referencias:
- Buera, M.P., Chirife, J., Resnik, S., Nonenzymatic nonoxidative browning in hydrolyzed shelf-stable concentrated cheese whey (1990) Journal of Food Science, 55, p. 697
- Burin, L., Buera, M.P., Hough, G., Chirife, J., Thermal resistance of β-galactosidase in dehydrated dairy model systems as affected by physical and chemical changes (2002) Food Chemistry, 76, pp. 423-430
- Chirife, J., Karel, M., Flink, J., Studies on mechanisms of retention of volatile in freeze-dried food models: The system PVP-n-propanol (1973) Journal of Food Science, 38, pp. 671-674
- Greenspan, L., Humidity fixed points of binary saturated aqueous solutions (1977) Journal of Research of the National Bureau of Standards, 81 (A), pp. 89-96
- Jouppila, K., Roos, Y., Glass transitions and crystallization in milk powders (1994) Journal of Dairy Science, 77, pp. 2907-2915
- Karmas, R., Buera, M.P., Karel, M., Effect of glass transition on rates of non-enzymatic browning in food systems (1992) Journal of Agricultural and Food Chemistry, 40, pp. 873-879
- Labrousse, S., Roos, Y., Karel, M., Collapse and crystallization in amorphous matrices with encapsulated compounds (1992) Sciences des Aliments, 12, pp. 575-769
- Lazar, M., Brown, A., Smith, G., Lindquist, F., (1956) Food Technology, 10, pp. 129-134
- Lozano, R., Diferencias de color (1979) Investigación y Ciencia, 39, pp. 8-14
- Peleg, M., Mannheim, C., The mechanism of caking of onion powder (1977) Journal of Food Processing and Preservation, 1, pp. 3-11
- Roos, Y., Melting and glass transition of low molecular weight carbohydrates (1993) Carbohydrate Research, 238, pp. 39-48
- Saltmarch, M., Vagnini-Ferrari, M., Labuza, T., Theoretical basis and application of kinetics to browning in spray-dried whey food systems (1981) Progresses in Food Nutrition and Science, 5, p. 331
- Schebor, C., Chirife, J., A survey of water activity and pH values in fresh pasta packed under modified atmosphere elaborated in Argentina and Uruguay (2000) Journal of Food Protection, 63, p. 965
- Schebor, C., Buera, M.P., Karel, M., Chirife, J., Color formation due to non-enzymatic browning in amorphous, glassy, anhydrous, model systems (1999) Food Chemistry, 65, pp. 427-432
- Shimada, Y., Roos, Y., Karel, M., Oxidation of methyl linoleate encapsulated in amorphous lactose-based food model (1991) Journal of Agriculture and Food Chemistry, 39, p. 637
- To, E., Flink, J., "Collapse", a structural transition in freeze-dried carbohydrates III Prerequisite of recrystallization (1978) Journal of Food Technology, 13, pp. 586-594
- Tsourouflis, S., Flink, J., Karel, M., Loss of structure in freeze-dried carbohydrates solutions: Effect of temperature, moisture content and composition (1976) Journal of the Science of Food and Agriculture, 27, pp. 509-519
- White, G., Cakebread, S., The glassy state in certain sugar-containing food products (1966) Journal of Food Technology, 1, p. 73
Citas:
---------- APA ----------
Fernández, E., Schebor, C. & Chirife, J.
(2003)
. Glass transition temperature of regular and lactose hydrolyzed milk powders. LWT - Food Science and Technology, 36(5), 547-551.
http://dx.doi.org/10.1016/S0023-6438(03)00022-7---------- CHICAGO ----------
Fernández, E., Schebor, C., Chirife, J.
"Glass transition temperature of regular and lactose hydrolyzed milk powders"
. LWT - Food Science and Technology 36, no. 5
(2003) : 547-551.
http://dx.doi.org/10.1016/S0023-6438(03)00022-7---------- MLA ----------
Fernández, E., Schebor, C., Chirife, J.
"Glass transition temperature of regular and lactose hydrolyzed milk powders"
. LWT - Food Science and Technology, vol. 36, no. 5, 2003, pp. 547-551.
http://dx.doi.org/10.1016/S0023-6438(03)00022-7---------- VANCOUVER ----------
Fernández, E., Schebor, C., Chirife, J. Glass transition temperature of regular and lactose hydrolyzed milk powders. LWT - Food Sci. Technol. 2003;36(5):547-551.
http://dx.doi.org/10.1016/S0023-6438(03)00022-7