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Observations on the heat-induced salt balance changes in milk I. Effect of heating time between 4 and 90°C

Published online by Cambridge University Press:  01 June 2009

Yves Pouliot ,
Marcel Boulet  and
Paul Paquin
Yves Pouliot
Affiliation:
Groupe de Recherche STELA, Département de Sciences et Technologie des Aliments, Université Laval, Québec, CanadaG1K 7P4
Marcel Boulet
Affiliation:
Groupe de Recherche STELA, Département de Sciences et Technologie des Aliments, Université Laval, Québec, CanadaG1K 7P4
Paul Paquin
Affiliation:
Groupe de Recherche STELA, Département de Sciences et Technologie des Aliments, Université Laval, Québec, CanadaG1K 7P4
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Summary

Milk permeate was separated at various temperatures by means of a hollow fibre ultrafiltration unit coupled to a stainless steel heat exchanger. Milk samples conditioned at 4°C were heated to 20, 40, 60, 80, 85 or 90°C prior to ultrafiltration. Ca, P, Mg, Na, K and citrate concentrations were measured in the permeate samples. Ca and P contents of the permeate decreased as the temperature increased. The pH was measured after cooling the permeate to room temperature. Smaller losses of Mg and citrate were also observed with increase in temperature. Na and K levels were not affected. A two-step time-concentration relationship was apparent for the species under study. An initial sharp decrease in concentration occurred in the first minute of holding time and was followed by a slower reaction. The possible occurrence of a two-step mechanism in the heat-induced salt balance changes is discussed. Dicalcium phosphate precipitation is believed to be coupled with tricalcium citrate precipitation upon heating.

Type
Original Articles
Information
Journal of Dairy Research , Volume 56 , Issue 2 , May 1989 , pp. 185 - 192
Copyright
Copyright © Proprietors of Journal of Dairy Research 1989

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References

REFERENCES

Allen, R. J. 1940 The estimation of phosphorus. Biochemical Journal 34 858–865CrossRefGoogle ScholarPubMed
Boulet, M. 1966 Formation of calcium phosphate in milk and milk ultrafiltrate. 17th International Dairy Congress, Munich B 111–118Google Scholar
Boulet, M. & Marier, J. R. 1960 Solubility of tricalcium citrate in solutions of variable ionic strength and in milk ultrafiltrates. Journal of Dairy Science 43 155–164CrossRefGoogle Scholar
Brooks, I. B., Luster, G. A. & Easterly, D. G. 1970 A procedure for the rapid determination of the major cations in milk by atomic absorption spectrophotometry. Atomic Absorption Newsletter, 9 93–94Google Scholar
Brulé, G. & Fauquant, J. 1981 Mineral balance in skim-milk and milk retentate: effect of physicochemical characteristics of the aqueous phase. Journal of Dairy Research 48 91–97CrossRefGoogle Scholar
Dalgleish, D. G., Pouliot, Y. & Paquin, P. 1987 a Studies on the heat stability of milk. 1. Behaviour of divalent cations and phosphate in milks heated in a stainless steel system. Journal of Dairy Research 54 29–37CrossRefGoogle Scholar
Dalgleish, D. G., Pouliot, V. & Paquin, P. 1987 b Studies on the heat stability of milk. II. Association and dissociation of particles and the effect of added urea. Journal of Dairy Research 54 39–49CrossRefGoogle Scholar
Davies, D. T. & White, J. C. D. 1959 Determination of heat-induced changes in the protein stability and chemical composition of milk. 15th International Dairy Congress, London 3 1677–1684Google Scholar
Eanes, E. D. & Meyer, J. L. 1977 The maturation of crystalline calcium phosphates in aqueous suspensions at physiologic pH. Calcified Tissue Research 23 259–263.Google Scholar
Edmondson, L. F. & Tarassuk, N. P. 1956 Studies on the colloidal proteins of skimmilk. II. The effect of heat and disodium phosphate on the composition of the casein complex. Journal of Dairy Science 39 123–128.CrossRefGoogle Scholar
Evenhuis, N. & De Vries, Th. R. 1957 The condition of calcium phosphate in milk. V. Netherlands Milk and Dairy Journal 11 111–121Google Scholar
Fox, K. K., Harper, M. K., Holsinger, V. H. & Pallansch, M. J. 1967 Effects of high-heat treatment on stability of calcium caseinate aggregates in milk. Journal of Dairy Science 50 443–450CrossRefGoogle Scholar
Hilgeman, M. & Jenness, R. 1951 Observations on the effect of heat treatment upon the dissolved calcium and phosphorus in skimmilk. Journal of Dairy Science 34 483–484Google Scholar
Holt, C. 1982 Inorganic constituents of milk. III. The colloidal calcium phosphate of cow's milk. Journal of Dairy Research 49 29–38CrossRefGoogle ScholarPubMed
Kannan, A. & Jenness, R. 1961 Relation of milk serum proteins and milk salts to the effects of heat treatment on rennet clotting. Journal of Dairy Science 44 808–822Google Scholar
Lyster, R. L. J. 1965 The composition of milk deposits in an ultra-high-temperature plant. Journal of Dairy Research 32, 203–208CrossRefGoogle Scholar
Lyster, R. L. J. 1979 The equilibria of calcium and phosphate ions with the micellar calcium phosphate in cow's milk. Journal of Dairy Research 46, 343–346Google Scholar
Marier, J. R. & Boulet, M. 1958 Direct determination of citric acid in milk with an improved pyridine-acetic anhydride method. Journal of Dairy Science 41 1683–1692CrossRefGoogle Scholar
Morrissey, P. A. 1969 The rennet hysteresis of heated milks. Journal of Dairy Research 36 333–341CrossRefGoogle Scholar
Pouliot, Y., Boulet, M. & Paquin, P. 1989 An experimental technique for the study of the salt balance in milk. Journal of Dairy Science. In pressCrossRefGoogle Scholar
Pyne, G. T. 1945 Rennet hysteresis and the calcium phosphate of milk. Biochemical Journal 39 385–390Google Scholar
Pyne, G. T. 1962 Reviews of the progress of dairy science. Section C. Dairy chemistry. Some aspects of the physical chemistry of the salts of milk. Journal of Dairy Research 29 101–130CrossRefGoogle Scholar
Rose, D. & Tessier, H. 1959 Composition of ultrafiltrates from milk heated at 80 to 230°F in relation to heat stability. Journal of Dairy Science 42 969–980Google Scholar
Schmidt, D. G. & Both, P. 1987 Studies on the precipitation of calcium phosphate. I. Experiments in the pH range 5·3 to 6·8 at 25°C and 50°C in the absence of additives. Netherlands Milk and Dairy Journal 41 105–120Google Scholar
Schmidt, D. G., Both, P., Visser, S., Slangen, K. J. & Van Rooijen, P. J. 1987 Studies on the precipitation of calcium phosphate. II. Experiments in the pH range 7·3 to 5·8 at 25 and 50°C in the presence of additives. Netherlands Milk and Dairy Journal 41 121–136Google Scholar
Tessier, H. & Rose, D. 1958 Calcium ion concentration in milk. Journal of Dairy Science 41 351–359CrossRefGoogle Scholar
Visser, J., Minihan, A., Smits, P., Tjan, S. B. & Heertje, I. 1986 Effects of pH and temperature on the milk salt system. Netherlands Milk and Dairy Journal 40 351–368Google Scholar
Walstra, P. & Jenness, R. 1984 Dairy Chemistry and Physics New York: John Wiley & Sons.Google Scholar