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Some physico-chemical properties of porcine milk

Published online by Cambridge University Press:  01 June 2009

M. C. T. Hoynes  and
P. F. Fox
M. C. T. Hoynes
Affiliation:
Department of Dairy and Food Chemistry, University College, Cork, Irish Republic
P. F. Fox
Affiliation:
Department of Dairy and Food Chemistry, University College, Cork, Irish Republic
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Summary

The principal results of an investigation of the major physico-chemical properties of porcine milk were:

Heat stability: all individual porcine milks examined had poor heat stability and some coagulated in 2 min at 95°C; the Q10°C was high and variable and was 40 for some samples. Dialysis of porcine milk against bulk bovine milk did not influence its heat stability; removal of colloidal calcium phosphate (CCP) from porcine milk increased its heat stability 4-fold, but it was still very unstable. Unlike bovine milk, porcine milk did not exhibit a maximum-minimum in the heat stability-pH curve, but rather resembled bovine casein micelles suspended in milk dialysate. Addition of isolated bovine β-lactoglobulin to porcine milk did not influence its heat stability-pH curve.

Rennet coagulation: under similar conditions, porcine milk coagulated about 4 times faster than bovine milk and the resultant curd was about twice as soft. Dialysis of porcine milk against a large excess of bulk bovine milk did not influence its rennet coagulability nor did removal of 50% of its CCP, but complete removal of the CCP rendered porcine milk non-coagulable by rennin. Porcine milk was readily coagulated by rennin down to 5°C; its second-stage coagulation was independent of temperature – a characteristic due mainly to its high level of CCP.

Alcohol stability: porcine milk was coagulated by 66–68% (v/v) ethanol, as compared with 74% (v/v) for bovine milk.

Calcium stability: porcine milk was stable to at least 300 mM-CaCl2 at both 2 and 37°C.

Solvation: porcine milk contained significantly less water of hydration than bovine milk, 1·7g H2O/g casein compared with 2·0g H2O/g casein.

Type
Research Article
Information
Journal of Dairy Research , Volume 42 , Issue 1 , February 1975 , pp. 43 - 56
Copyright
Copyright © Proprietors of Journal of Dairy Research 1975

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References

REFERENCES

Berridge, N. J. (1942). Nature 149, 194.CrossRefGoogle Scholar
Creamer, L. K. & Waugh, D. F. (1966). Journal of Dairy Science 49, 706.Google Scholar
Davies, D. T. & White, J. C. D. (1958). Journal of Dairy Research 25, 256.CrossRefGoogle Scholar
Davies, D. T. & White, J. C. D. (1966). Journal of Dairy Research 33, 67.CrossRefGoogle Scholar
Dewan, R. K., Bloomfield, V. A., Chudgar, A. & Morr, C. V. (1973). Journal of Dairy Science 56, 699.CrossRefGoogle Scholar
Elsley, F. W. H. (1971). Proceedings of the 1970 Easier School in Agricultural Science, University of Nottingham, p. 393. London: Butterworth.Google Scholar
Fiske, C. H. & Subbarrow, Y. (1925). Journal of Biological Chemistry 66, 375.CrossRefGoogle Scholar
Foltmann, B. (1959). 15th International Dairy Congress, London 2, 655.Google Scholar
Fox, K. K., Holsinger, V. H., Posati, L. P. & Pallansch, M. J. (1967). Journal of Dairy Science 50, 1363.CrossRefGoogle Scholar
Gerrits, R. J., Kraeling, R. R. & Kincaid, C. M. (1969). Biochemical Genetics 3, 355.CrossRefGoogle Scholar
Glasnák, V. (1968 a). Comparative Biochemistry and Physiology 25, 355.CrossRefGoogle Scholar
Glasnák, V. (1968 b). Folia Biologica 14, 70;Google Scholar
cited from Dairy Science Abstracts 30, 443.Google Scholar
Jenness, R. & Patton, S. (1959). Principles of Dairy Chemistry. New York: John Wiley.Google Scholar
Keogh, M. K. (1966). Thesis, National University of Ireland (Cork).Google Scholar
McGann, T. C. A. & Pyne, G. T. (1960). Journal of Dairy Research 27, 403.CrossRefGoogle Scholar
McKenzie, H. A. (Ed.) (1971). Milk proteins: Chemistry and Molecular Biology, vols I and II. New York: Academic Press.Google Scholar
Morrissey, P. A. (1969). Journal of Dairy Research 36, 343.CrossRefGoogle Scholar
Morrissey, P. A. (1973). Journal of Dairy Research 40, 421.CrossRefGoogle Scholar
O'Connor, P. & Fox, P. F. (1973). Netherlands Milk and Dairy Journal 27, 199.Google Scholar
Pyne, G. T. (1962). Journal of Dairy Research 29, 101.CrossRefGoogle Scholar
Pyne, G. T. & McGann, T. C. A. (1960). Journal of Dairy Research 27, 9.CrossRefGoogle Scholar
Rose, D. (1961 a). Journal of Dairy Science 44, 430.CrossRefGoogle Scholar
Rose, D. (1961 b). Journal of Dairy Science 44, 1405.CrossRefGoogle Scholar
Rose, D. (1962). Journal of Dairy Science 45, 1305.CrossRefGoogle Scholar
Rose, D. (1963). Dairy Science Abstracts 25, 45.Google Scholar
Rose, D. (1965). Journal of Dairy Science 48, 139.CrossRefGoogle Scholar
Sloan, R. E., Jenness, R., Kenyon, A. L. & Regehr, E. A. (1961). Comparative Biochemistry and Physiology 4, 47.CrossRefGoogle Scholar
Tessier, H. & Rose, D. (1964). Journal of Dairy Science 47, 1047.CrossRefGoogle Scholar
Thompson, M. P., Boswell, R. T., Martin, V., Jenness, R. & Kiddy, C. A. (1969). Journal of Dairy Science 52, 796.CrossRefGoogle Scholar
Warren, L. (1959). Journal of Biological Chemistry 234, 1971.CrossRefGoogle Scholar
Webb, B. H. & Johnson, A. H. (Eds) (1961). Fundamentals of Dairy Chemistry. Westport, Conn. Avi Publishing Co.Google Scholar
Wheelock, J. V. & Knight, D. J. (1969). Journal of Dairy Research 36, 183.CrossRefGoogle Scholar
White, J. C. D. & Davies, D. T. (1958 a). Journal of Dairy Research 25, 236.CrossRefGoogle Scholar
White, J. C. D. & Davies, D. T. (1958 b). Journal of Dairy Research 25, 267.CrossRefGoogle Scholar
White, J. C. D. & Davies, D. T. (1966). Journal of Dairy Research 33, 93.CrossRefGoogle Scholar
Woychik, J. H. & Wondolowski, M. V. (1969). Journal of Dairy Science 52, 901.Google Scholar