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Moisture sorption behaviour of mineral acid, lactic and rennet caseins in the temperature range 27–80 °C

Published online by Cambridge University Press:  01 June 2009

Lemuel M. Diamante ,
Peter A. Munro  and
Michael G. Weeks
Lemuel M. Diamante
Affiliation:
Department of Food Technology, Massey University, Palmerston North, New Zealand
Peter A. Munro
Affiliation:
Department of Food Technology, Massey University, Palmerston North, New Zealand
Michael G. Weeks
Affiliation:
Department of Food Technology, Massey University, Palmerston North, New Zealand
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Summary

The moisture desorption isotherms of mineral acid, lactic and rennet caseins were determined at ˜ 28, 55 and 80 °C. The isotherms were all sigmoid type II according to the BET (Brunauer et al. 1938) classification. A modified Henderson equation was found best to describe the relationship of equilibrium moisture content, water activity (aw) and temperature for all three types of casein. BET monolayer moisture contents and heats of desorption of the three types of casein were calculated. Equilibrium moisture contents at aw 0·432 and 30 °C for mineral acid casein made under a range of manufacturing conditions varied significantly depending on the drying conditions. More severe drying conditions produced lower equilibrium moisture contents.

Type
Original Articles
Information
Journal of Dairy Research , Volume 59 , Issue 3 , August 1992 , pp. 307 - 319
Copyright
Copyright © Proprietors of Journal of Dairy Research 1992

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References

REFERENCES

Berlin, E., Anderson, B. A. & Pallansch, M. J. 1969 Sorption of water vapor and of nitrogen by genetic variants of αs1-casein. Journal of Physical Chemistry 73 303–307CrossRefGoogle Scholar
Berlin, E., Anderson, B. A. & Pallansch, M. J. 1970 Effect of temperature on water vapor sorption by dried milk powders. Journal of Dairy Science 53 146–149CrossRefGoogle Scholar
Boquet, R., Chirife, J. & Iglesias, H. A. 1978 Equations for fitting water sorption isotherms of foods. II. Evaluation of various two-parameter models. Journal of Food Technology 13 319–327Google Scholar
Brunauer, S., Emmett, P. H. & Teller, E. 1938 Adsorption of gases in multimolecular layers. Journal of the American Chemical Society 60 309–319CrossRefGoogle Scholar
Diamante, L. M. & Munro, P. A. 1990 Water desorption isotherms of two varieties of sweet potato. International Journal of Food Science and Technology 25 140–147CrossRefGoogle Scholar
Espie, S. A., Thompson, C. J. & Winter, G. J. 1984 Drying characteristics of casein curd. New Zealand Journal of Dairy Science and Technology 19 239–247Google Scholar
Fito, P. J. & Sanz, F. J. 1974 Equilibrium moisture contents in drying of rice bran. In Proceedings of the Fourth International Congress of Food Science and Technology 4 477–488Google Scholar
Greenspan, L. 1977 Humidity fixed points of binary saturated aqueous solutions. Journal of Research of the National Bureau of Standards 81A 89–96CrossRefGoogle Scholar
Hardy, J. J. & Steinberg, M. P. 1984 Interaction between sodium chloride and paracasein as determined by water sorption. Journal of Food Science 49 127–131CrossRefGoogle Scholar
Heap, H. A. & Lawrence, R. C. 1984 The development of a defined starter system for casein manufacture. New Zealand Journal of Dairy Science and Technology 19 119–123Google Scholar
Heldman, D. R., Hall, C. W. & Hedrick, T. I. 1965 Vapor equilibrium relationships of dry milk. Journal of Dairy Science 48 845–852CrossRefGoogle ScholarPubMed
Hermansson, A. M. 1977 Functional properties of proteins for foods - water vapour sorption. Journal of Food Technology 12 177–187Google Scholar
Igbeka, J. C. & Blaisdell, J. L. 1982 Moisture isotherms of a processed meat product - Bologna. Journal of Food Technology 17 37–46CrossRefGoogle Scholar
Iglesias, H. A. & Chirife, J. 1976 a Prediction of the effect of temperature on water vapor sorption isotherms of food material. Journal of Food Technology 11 109–116CrossRefGoogle Scholar
Iglesias, H. A. & Chirife, J. 1976 b Isosteric heats of water vapor sorption on dehydrated foods. I. Analysis of differential heat curves. Lebensmittel-Wissenchaft und -Technologie 9 116–122Google Scholar
King, C. J. 1968 Rates of moisture sorption and desorption in porous, dried foodstuffs. Food Technology 22 509–515Google Scholar
Kinsella, J. E. & Fox, P. F. 1986 Water sorption by proteins: milk and whey proteins. CRC Critical Reviews in Food Science and Nutrition 24 91–139CrossRefGoogle ScholarPubMed
Kuntz, I. D. & Kauzmann, W. 1974 Hydration of proteins and polypetides. Advances in Protein Chemistry 28 239–345CrossRefGoogle Scholar
Labuza, T. P. 1968 Sorption phenomena in foods. Food Technology 22 263–272Google Scholar
Lang, K. W., McCune, T. D. & Steinberg, M. P. 1981 A proximity equilibration cell for rapid determination of sorption isotherms. Journal of Food Science 46 936–938CrossRefGoogle Scholar
Loncin, M., Bimbenet, J. J. & Lenges, J. 1968 Influence of the activity of water on the spoilage of foodstuffs. Journal of Food Technology 3 131–142Google Scholar
Mulvihill, D. M. 1989 Caseins and casemates: manufacture. In Developments in Dairy Chemistry 4. Functional Milk Proteins, pp. 97–130 (Ed. Fox, P. F.). London: Elsevier Applied ScienceGoogle Scholar
Munro, P. A. 1980 The densities of casein curd particles and caseinate solutions. New Zealand Journal of Dairy Science and Technology 15 225–238Google Scholar
Munro, P. A., Vu, J. T. & Mockett, R. B. 1983 Comparison of three pilot-scale machines for the mechanical dewatering of casein curd. New Zealand Journal of Dairy Science and Technology 18 35–46Google Scholar
Rao, K. S. & Das, B.. 1968 Varietal differences in gelatin, egg albumin, and casein in relation to sorption-desorption hysteresis with water. Journal of Physical Chemistry 72 1223–1230CrossRefGoogle ScholarPubMed
Rockland, L. B. 1957 A new treatment of hygroscopic equilibria: application to walnuts (Juglans regia) and other foods. Food Research 22 604–628Google Scholar
Rüegg, M., Blanc, B. & Lüscher, M. 1979 Hydration of casein micelles: kinetics and isotherms of water sorption of micellar casein isolated from fresh and heat-treated milk. Journal of Dairy Research 46 325–328CrossRefGoogle ScholarPubMed
Rüegg, M., Lüscher, M. & Blanc, B. 1974 Hydration of native and rennin coagulated caseins as determined by differential scanning calorimetry and gravimetric sorption measurement. Journal of Dairy Science 57 387–393CrossRefGoogle Scholar
Southward, C. R. & Walker, N. J. 1980 The manufacture and industrial use of casein. New Zealand Journal of Dairy Science and Technology 15 201–217Google Scholar