Measurement of Water Activity, Moisture Sorption Isotherms, and Moisture Content of Foods

Water Activity in Foods: Fundamentals and Applications

Volumn , Issue , 2008, Pages 155-171

  Fontana, Anthony J ^a  

^a Decagon Devices Inc   (United States)

Author keywords

Measurement of water activity; Measurement technique; Moisture content of foods; Moisture sorption isotherms; Temperature stability

Indexed keywords

EID: 60749126478     PISSN: None     EISSN: None     Source Type: Book    
DOI: 10.1002/9780470376454.ch6     Document Type: Chapter

References (74)

1. Acott, K.M., and Labuza, T.P. 1975. Inhibition of Aspergillus in an intermediate moisture food system. Journal of Food Science 40:137-139.
2. Alzamora, S.M., Chirife, J., and Gerschenson, L.N. 1994. Determination and correlation of the water activity of propylene glycol solutions. Food Research International 27:65-67.
3. Association of Official Analytical Chemists (AOAC). 1995. Official Methods of Analysis of AOAC International. Ed. T.R. Mulvaney. Arlington, VA: AOAC International. pp. 42-1 to 42-2.
4. Bell, L.N., and Labuza, T.P. 2000. Moisture Sorption: Practical Aspects of Isotherm Measurement and Use, 2nd Edition. St. Paul: American Association of Cereal Chemists.
5. Benado, A.L., and Rizvi, S.S.H. 1987. Water activity calculation by direct measurement of vapor pressure. Journal of Food Science 52:429-432.
6. Campbell, G.S., and Lewis, D.P., inventors. 1988. Decagon Devices, Inc., assignee. 1998 Oct 6. Water activity and dew point temperature measuring apparatus and method. U.S. patent 5, 816, 704.
7. Chirife, J., and Resnik, S.L. 1984. Unsaturated solutions of sodium chloride as reference sources of water activity at various temperatures. Journal of Food Science 49:1486-1488.
8. CRC Handbook of Chemistry and Physics, 74th Edition. 1993. Cleveland, OH: The Chemical Rubber Company.
9. Fennema, O.R. 1985. Water and ice. In: Food Chemistry, 2nd Edition, ed. O.R. Fennema, pp. 23-67. New York: Marcel Dekker.
10. Fett, H.M. 1973. Water activity determination in foods in the range 0.80 to 0.99. Journal of Food Science 38:1097-1098.
11. Fontan, C.F., and Chirife, J. 1981. The evaluation of water activity in aqueous solutions from freezing point depression. Journal of Food Technology 16:21.
12. Fontana, A.J. 2001. Dewpoint method for the determination of water activity. In: Current Protocols in Food Analytical Chemistry, ed. R.E. Wrolstad, pp. A2.2.1 to A2.2.10. New York: John Wiley & Sons.
13. Fontana, A.J., and Campbell, C.S. 2004. Water activity. In: Handbook of Food Analysis, 2nd Edition, ed. L.M.L. Nollet, pp. 39-54. New York: Marcel Dekker.
14. Gerschenson, L., Favetto, G., and Chirife, J. 1984. Influence of organic volatiles during water activity measurement with a fiber-dimensional hygrometer. Lebensittel-Wissenschaft und-Technologie 17:342-344.
15. Greenspan, L. 1977. Humidity fixed points of binary saturated aqueous solutions. Journal of Research of the National Bureau of Standards: A Physics and Chemistry 81A:89-96.
16. Hallsworth, J.E. and Nomura, Y. 1999. A simple method to determine the water activity of ethanol-containing samples. Biotechnology and Bioengineering 62:242-245.
17. Harris, G.A. 1995. Food water relations. Food Technology Europe 2 Dec 1995/Jan 1996:96-98.
18. Jakobsen, M. 1983. Filament hygrometer for water activity measurement interlaboratory evaluation. Journal of the Association of Official Analytical Chemists 66:1106-1111.
19. Karmas, E. 1980. Techniques for measurement of moisture content of foods. Food Technology 34:52.
20. Labuza, T.P. 1975a. Interpretation of sorption data in relation to the state of constituent water. In: Water Relations of Foods, ed. R.B. Duckworth, pp. 155-172. New York: Academic Press.
21. Labuza, T.P. 1975b. Sorption phenomena in foods: Theoretical and practical aspects. In: Theory, Determination and Control of Physical Properties of Food Materials, ed. C. Rha, pp. 197-219. Dordrecht, the Netherlands: D. Reidel Publishing Co.
22. Labuza, T.P., Acott, K., Tatini, S.R., Lee, R.Y., Flink, J., and McCall, W. 1976. Water activity determination: A collaborative study of different methods. Journal of Food Science 41:910-917.
23. Labuza, T.P., Kreisman, L.N., Heinz, C.A., and Lewicki, P.P. 1977. Evaluation of the Abbeon cup analyzer compared to the VPM and Fett-Vos methods for water activity measurement. Journal of Food Processing and Preservation 1:31-41.
24. Labuza, T.P., Kaanane, A., and Chen, J.Y. 1985. Effect of temperature on the moisture sorption isotherms and water activity shift of two dehydrated foods. Journal of Food Science 50:385-391.
25. Leistner, L., and Rödel, W. 1975. The significance of water activity for micro-organisms in meats. In: Water Relations of Foods, ed. R.B. Duckworth, pp. 309-323. London: Academic Press.
26. Lerici, C.R., Piva, M., and Dalla, R.M. 1983. Water activity and freezing point depression of aqueous solutions and liquid foods. Journal of Food Science 48:1667-1669.
27. Lewicki, P.P. 1987. Design of water activity vapor pressure manometer. Journal of Food Engineering 6:405-422.
28. Lewicki, P.P. 1989. Measurement of water activity of saturated salt solutions with the vapor pressure manometer. Journal of Food Engineering 10:39-55.
29. Lewicki, P.P., Busk, G.C., Peterson, P.L., and Labuza, T.P. 1978. Determination of factors controlling accurate measurement of aw by the vapor pressure manometric technique. Journal of Food Science 43:244-246.
30. Makower, B., and Myers, S. 1943. A new method for the determination of moisture in dehydrated vegetables. Proceedings of Institute of Food Technologists, 4th Conference 156.
31. Nunes, R.V, Urbicain, M.J., and Rotstein, E. 1985. Improving accuracy and precision of water activity measurement with a water vapor pressure manometer. Journal of Food Science 50:148-149.
32. Pande, A. 1974. Handbook of Moisture Determination and Control. Vol. 1. New York: Marcel Dekker.
33. Pande, A. 1975. Handbook of Moisture Determination and Control. Vol. 2-4. New York: Marcel Dekker.
34. Park, Y.W. 1996. Determination of moisture and ash contents of food. In: Handbook of Food Analysis, ed. L.M.L. Nollet, pp. 59-92. New York: Marcel Dekker.
35. Pollio, M.L., Kitic, D., Favetto, G., and Chirife, J. 1986. Effectiveness of available filters for an electric hygrometer for measurement of water activity in the food industry. Journal of Food Science 51:1358-1359.
36. w range. Journal of Food Protein 40:537-539.
37. Prior, B.A. 1979. Measurement of water activity in foods: A review. Journal of Food Protein 42:668-674.
38. Rahman, M.S. 1995. Water activity and sorption properties of food. In: Food Properties Handbook, ed. M.S. Rahman, pp. 1-86. Baca Raton, FL: CRC Press.
39. Rahman, M.S., and Sablani, S.S. 2001. Measurement of water activity by electronic sensors. In: Current Protocols in Food Analytical Chemistry, ed. R.E. Wrolstad, pp. A2.5.1 to A2.5.4. New York: John Wiley & Sons, Inc.
40. Rahman, M.S., Sablani, S.S., Guizani, N., Labuza, T.P., and Lewicki, P.P. 2001. Direct manometric determination of vapor pressure. In: Current Protocols in Food Analytical Chemistry, ed. R.E. Wrolstad, pp. A2.4.1 to A2.4.6. New York: John Wiley & Sons, Inc.
41. Reid, D.S. 2001. Factors to consider when estimating water vapor pressure. In: Current Protocols in Food Analytical Chemistry, ed. R.E. Wrolstad, pp. A2.1.1 to A2.1.3. New York: John Wiley & Sons, Inc.
42. Reid, D.S., Fontana, A.J., Rahman, M.S., Sablani, S.S., Labuza, T.P., Guizani, N., and Lewicki, P.P. 2001a. Vapor pressure measurements of water. In: Current Protocols In Food Analytical Chemistry, ed. R.E. Wrolstad, pp. A2.1.1 to A2.5.4. New York: John Wiley & Sons, Inc.
43. Reid, D.S., Ruiz, R.P., Chinachoti, P., and Krygsman, P.H. 2001b. Gravimetric measurements of water. In: Current Protocols in Food Analytical Chemistry, ed. R.E. Wrolstad, pp. A1.1.1 to A1.3.11. New York: John Wiley & Sons, Inc.
44. Rey, D.K., and Labuza, T.P. 1981. Characterization of the effect of solute in water-binding and gel strength properties of carrageenan. Journal of Food Science 46:786-789.
45. Richard, J., and Labuza, T.P. 1990. Rapid determination of the water activity of some reference solutions, culture media and cheese using a new dew point apparatus. Sciences Des Aliments 10:57-64.
46. Richards, L.A., and Ogata, G. 1958. Thermocouple for vapor pressure measurement in biological and soil systems at high humidity. Science 1089-1090.
47. Rizvi, S.S.H. 1986. Thermodynamic properties of foods in dehydration. In: Engineering Properties of Foods, eds. M.A. Rao and S.S.H. Rizvi. New York: Marcel Dekker, Inc.
48. Rizvi, S.S.H. 1995. Thermodynamic properties of foods in dehydration. In: Engineering Properties of Foods, 2nd Edition, eds. M.A. Rao and S.S.H. Rizvi, p. 123. New York: Marcel Dekker, Inc.
49. Roa, V, and Tapia de Daza, M.S. 1991. Evaluation of water activity measurements with a dew point electronic humidity meter. Lebensittel-Wissenschaft und-Technologie 24:208-213.
50. Robinson, R.A., and Stokes, R.H. 1965. Electrolyte Solutions; The Measurement and Interpretation of Conductance, Chemical Potential, and Diffusion in Solutions of Simple Electrolytes. London: Butterworth.
51. Rödel, W., Ponert, H., and Leistner, L. 1975. Verbesserter aw-Wert-Messer zur Bestimmung der Wasseraktivität (aw-Wert) von Fleisch und Fleischwaren. Fleischwirtschaft 55:557-558.
52. Rödel, W. 1998. Water activity and its measurement in food. In: Instrumentation and Sensors for the Food Industry, ed. E. Kress-Rogers, pp. 375-415. Cambridge: Woodhead Publishing Limited.
53. Rödel, W. 2001. Water activity and its measurement in food. In: Instrumentation and Sensors for the Food Industry, 2nd Edition, E. Kress-Rogers and C.B. Brimelow, pp. 453-483. Boca Raton, FL: CRC Press.
54. Sablani, S.S., Rahman, M.S., and Labuza, T.P. 2001. Measurement of water activity using isopiestic method. In: Current Protocols In Food Analytical Chemistry, ed. R.E. Wrolstad, pp. A2.3.1 to A2.3.10. New York: John Wiley & Sons, Inc.
55. Sharpe, A.N., Diotte, M.P., and Dudas, I. 1991. Water activity tester suited to compliance and high Aw work. Journal of Food Protein 54:277-282.
56. Snavely, M.J., Price, J.C., and Jun, H.W. 1990. A comparison of three equilibrium relative humidity measuring devices. Drug Dev. Ind. Pharm. 16:1399-1409.
57. Sood, VC., and Heldman, D.R. 1974. Analysis of a vapor pressure manometer for measurement of water activity in nonfat dry milk. Journal of Food Science 39:1011-1013.
58. Spiess, W.E.L., and Wolf, W. 1987a. Critical evaluation of methods to determine moisture sorption isotherms. In: Water Activity: Theory and Applications to Food, eds. L.B. Rockland and L.R. Beuchat, pp. 215-233. New York: Marcel Dekker, Inc.
59. Spiess, W.E.L., and Wolf, W. 1987b. Water activity. In: Water Activity: Theory and Applications to Food, eds. L.B. Rockland and L.R. Beuchat, pp. 215-233. New York: Marcel Dekker.
60. Stekelenburg, F.K., and Labots, H. 1991. Measurement of water activity with an electric hygrometer. International Journal Of Food Science and Technology 26:111-116.
61. Stoloff, L. 1978. Calibration of water activity measuring instruments and devices: Collaborative study. Journal of the Association of Official Analytical Chemists 61:1166-1178.
62. Strong, D.H., Foster, E.M., and Duncan, C.L. 1970. Influence of water activity on the growth of Clostridium per-frigens. Applied Microbiology 19:980-987.
63. Stroup, W.H., Peeler, J.T., and Smith, K. 1987. Evaluation of precision estimates for fiber-dimensional and electrical hygrometers for water activity determinations. Journal of the Association of Official Analytical Chemists 70:955-957.
64. Sullivan, D.M., and Carpenter, D.E. 1993. Methods of Analysis for Nutritional Labeling. Arlington, VA: Association of Official Analytical Chemists (AOAC) International.
65. Taylor, A.A. 1961. Determination of moisture equilibria in dehydrated foods. Food Tech. 15:536-540.
66. Troller, J.A. 1983a. Methods to measure water activity. J. Food Prot. 46:129-134.
67. Troller, J.A. 1983b. Water activity measurements with a capacitance manometer. J. Food Sci. 48:739-741.
68. Troller, J.A. and Christian, J.H.B. 1978. Methods. Water Activity and Food. New York: Academic Press. pp.13-47.
69. Vos, P.T. and Labuza, T.P. 1974. Technique for measurements of water activity in the high aw range. J. Agric. Food Chem. 22:326-327.
70. Voysey, P. 1993. An evaluation of the Aqua Lab CX-2 system for measuring water activity. F M B R A Digest 124:24-25.
71. Voysey, P.A. 1999. Guidelines for the measurement of water activity and ERH in foods. Gloucestershire: Campden & Chorleywood Food Research Association Group.
72. Wiebe, H.H., Kidambi, R.N., Richardson, G.H., and Ernstrom, C.A. 1981. A rapid psychrometric procedure for water activity measurement of foods in the intermediate moisture range. J. Food Prot. 44:892-895.
73. Wolf, W., Spiess. W.E.L., and Jung, G. 1985. Standardization of isotherm measurements. In: Properties of Water in Foods, eds. D. Simato and J.L. Multon, pp. 661-679. Dordrecht, the Netherlands: Martinus Nijhoff Publishers.
74. Zanoni, B., Peri, C., Giovanelli, G., and Pagliarini, E. 1999. Design and setting up of a water vapour pressure capacitance manometer for measurement of water activity. J. Food Eng. 38:407-423.