Water Activity and Glass Transition

Water Activity in Foods: Fundamentals and Applications

Volumn , Issue , 2008, Pages 29-45

  Roos, Yrjö H ^a  

^a UNIVERSITY COLLEGE CORK   (Ireland)

Author keywords

Biological systems; Glass transition; Growth of microorganisms; Properties of foods; Water activity

Indexed keywords

EID: 84889769479     PISSN: None     EISSN: None     Source Type: Book    
DOI: 10.1002/9780470376454.ch3     Document Type: Chapter

References (41)

1. Bell, L.N. 1996. Kinetics of non-enzymatic browning in amorphous solid systems: Distinguishing the effects of water activity and glass transition. Food Research International 28:591-597.
2. Bell, L.N, Touma, D.E, White, K.I., and Chen, Y.H. 1998. Glycine loss and Maillard browning as related to the glass transition in a model food system. Journal of Food Science 63:625-628.
3. Chirife, J., and Buera, M.P. 1995. A critical review of some non-equilibrium situations and glass transitions on water activity values of foods in the microbiological growth range. Journal of Food Engineering 25:531-552.
4. Chirife, J., and Buera, M.P. 1996. Water activity, water glass dynamics, and the control of microbial growth in foods. Critical Reviews in Food Science and Nutrition. 36:465-513.
5. Couchman, P.R., and Karasz, F.E. 1978. A classical thermodynamic discussion of the effect of composition on glass transition temperatures. Macromolecules 11:117-119.
6. Duckworth, R.B. 1981. Solute mobility in relation to water content and water activity. In: Water Activity: Influences on Food Quality, eds. L.B. Rockland, G.F. Stewart, pp. 295-317. New York: Academic Press.
7. Gordon, M., and Taylor, J.S. 1952. Ideal copolymers and the second-order transitions of synthetic rubbers. I. Non-crystalline copolymers. Journal of Applied Chemistry 2:493-500.
8. Haque, M.d. K., and Roos, Y.H. 2004. Water plasticization and crystallization of lactose in spray-dried lactose/protein mixtures. Journal of Food Science 69(1):FEP23-29.
9. Hartel, R.W. 2001. Crystallization in Foods, p. 325. Gaithersburg: Aspen.
10. Johari, G.P., Hallbrucker, A., and Mayer E. 1987. The glass-liquid transition of hyperquenched water. Nature 330:552-553.
11. Jouppila, K., and Roos, Y.H. 1997. The physical state of amorphous corn starch and its impact on crystallization. Carbohydrates and Polymers 32:95-104.
12. Jouppila, K., Kansikas, J., and Roos, Y.H. 1997. Glass transition, water plasticization, and lactose crystallization in skim milk powder. Journal of Dairy Science 80:3152-3160.
13. Jouppila, K., Kansikas, J., and Roos, Y.H. 1998. Crystallization and X-ray diffraction of crystals formed in water-plasticized amorphous lactose. Biotechnological Progress 14:347-350.
14. Katz, E.E., and Labuza, T.P. 1981. Effect of water activity on the sensory crispness and mechanical deformation of snack food products. Journal of Food Science 46:403-409.
15. Labuza, T.P. 1968. Sorption phenomena in foods. Food Technology 22:263-265, 268, 270, 272.
16. Labuza, T.P., Tannenbaum, S.R., and Karel, M. 1970. Water content and stability of low-moisture and intermediate-moisture foods. Food Technology 24(5):543-544, 546-548, 550.
17. Le Meste, M., Champion, D., Roudaut, G., Blond, G., and Simatos, D. 2002. Glass transition and food technology: A critical appraisal. Journal of Food Science 67:2444-2458.
18. Levine, H., and Slade, L. 1986. A polymer physico-chemical approach to the study of commercial starch hydrolysis products (SHPs). Carbohydrates and Polymers 6:213-244.
19. Lievonen, S.M., and Roos, Y.H. 2002. Nonenzymatic browning in amorphous food models: Effects of glass transition and water. Journal of Food Science 67:2100-2106.
20. Makower, B., and Dye, W.B. 1956. Equilibrium moisture content and crystallization of amorphous sucrose and glucose. Journal of Agricultural and Food Chemistry 4:72-77.
21. Miao, S., and Roos, Y.H. 2004. Nonenzymatic browning kinetics of a carbohydrate-based low-moisture food system at temperatures applicable to spray drying. Journal of Agricultural and Food Chemistry 52:5250-5257.
22. Nelson, K.A., and Labuza, T.P. 1994. Water activity and food polymer science: Implications of state on Arrhenius and WLF models in predicting shelf life. Journal of Food Engineering 22:271-289.
23. Peleg, M. 1992. On the use of the WLF model in polymers and foods. Critical Reviews in Food Science and Nutrition 32:59-66.
24. Peleg, M. 1994. A model of mechanical changes in biomaterials at and around their glass transition. Biotechnology Progress 10:385-388.
25. Roos, Y. 1993a. Water activity and physical state effects on amorphous food stability. Journal of Food Processing and Preservation 16:433-447.
26. Roos, Y.H. 1993b. Melting and glass transitions of low molecular weight carbohydrates. Carbohydrate Research 238:39-48.
27. Roos, Y.H. 1995. Phase Transitions in Foods, p. 360. San Diego: Academic Press.
28. Roos, Y.H. 2002. Thermal analysis, state transitions and food quality. Journal of Thermal Analysis and Calo-rimetry 71: 197-203.
29. Roos, Y.H. 2004. Phase and state transitions in dehydration of biomaterials and foods. In: Dehydration of Products of Biological Origin, ed. A.S. Mujumdar, pp. 3-22. Enfield: Science Publishers.
30. Roos, Y., and Karel, M. 1991. Phase transitions of mixtures of amorphous polysaccharides and sugars. Biotechnological Progress 7:49-53.
31. Roos, Y., and Karel, M. 1992. Crystallization of amorphous lactose. Journal of Food Science 57:775-777.
32. Roos, Y.H., Karel, M., and Kokini, J.L. 1996. Glass transitions in low moisture and frozen foods: Effects on shelf life and quality. Food Technology 50 (11):95-108.
33. Roos, Y.H., Roininen, K., Jouppila, K., and Tuorila, H. 1998. Glass transition and water plasticization effects on crispness of a snack food extrudate. International Journal of Food Properties 1:163-180.
34. Roudaut, G., Simatos, D., Champion, D., Contreras-Lopez, E., and Le Meste, M. 2004. Molecular mobility around the glass transition temperature: A mini review. Innovative Food Science and Emerging Technology 5:127-134.
35. Slade, L., and Levine, H. 1991. Beyond water activity: Recent advances based on an alternative approach to the assessment of food quality and safety. Critical Reviews in Food Science and Nutrition 30:115-360.
36. Slade, L., and Levine, H. 1995. Glass transitions and water-food structure interactions. Advances in Food Nutrition and Research 38:103-269.
37. Sperling, L.H. 1992. Introduction to Physical Polymer Science, p. 594. New York: John Wiley.
38. Talja, R.A., and Roos, Y.H. 2001. Phase and state transition effects on dielectric, mechanical, and thermal properties of polyols. Thermochimica Acta 380:109-121.
39. van den Berg, C., and Bruin, S. 1981. Water activity and its estimation in food systems: Theoretical aspects. In: Water Activity: Influences on Food Quality, eds. L.B. Rockland, G.F. Stewart, p. 1-61. New York: Academic Press.
40. White, G.W., and Cakebread, S.H. 1966. The glassy state in certain sugar-containing food products. Journal of Food Technology 1:73-81.
41. Williams, M.L., Landel, R.F., and Ferry, J.D. 1955. The temperature dependence of relaxation mechanisms in amorphous polymers and other glass-forming liquids. Journal of the American Chemical Society 77:3701-3707.