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The voluminosity of bovine casein micelles and some of its implications

Published online by Cambridge University Press:  01 June 2009

Pieter Walstra
Pieter Walstra
Affiliation:
Dairying Laboratory, Department of Food Science, Agricultural University, Wageningen, The Netherlands
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Summary

A comparison of literature results on the voluminosity of casein micelles yields large differences, largely related to the method of determination. After applying some corrections, methods based on hydrodynamic radius yield a value of roughly 3·9ml/g dry casein, other methods (microscopy, sediment volume) about 2·2. Roughly half of the discrepancy can be explained by the micelles being not perfectly spherical. To explain the remaining difference, it is assumed that the micelles are hairy, i.e. they have molecular chains protruding into the milk serum. The hairyness would increase with decreasing temperature and be largely removed by the action of rennet. It would cause some entropic repulsion between micelles at close approach.

Type
Section D. Casein Micelles
Information
Journal of Dairy Research , Volume 46 , Issue 2: Symposium on the Physics and Chemistry of Milk Proteins , April 1979 , pp. 317 - 323
Copyright
Copyright © Proprietors of Journal of Dairy Research 1979

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References

REFERENCES

Bloomfield, V. A. (1976). Biopolymers 15, 1243.CrossRefGoogle Scholar
Buchheim, W. & Prokopek, D. (1976). Milchwissenschoft 31, 462.Google Scholar
Dewan, R. K. & Bloomfield, V. A. (1973). Journal of Dairy Science 56, 66.CrossRefGoogle Scholar
Dewan, R. K., Bloomfield, V. A., Chudgar, A. & Morr, C. V. (1973). Journal of Dairy Science 56, 699.CrossRefGoogle Scholar
Duckworth, D. S., Lips, A. & Staples, E. J. (1978). Faraday Discussion 65 (in the Press).Google Scholar
Hesselink, F. T. (1971). Journal of Physical and Colloid Chemistry 75, 65.CrossRefGoogle Scholar
Hesselink, F. T., Vrij, A. & Overbeek, J. T. G. (1971). Journal of Physical and Colloid Chemistry 75, 2094.CrossRefGoogle Scholar
Holt, C. (1975a). Biochimica et Biophysica Acta 400, 293.CrossRefGoogle Scholar
Holt, C. (1975b). Proceedings of the International Conference on Colloid and Surface Science, Budapest 1975, 641.Google Scholar
Holt, C., Parker, T. G. & Daloleish, D. G. (1975). Biochimica et Biophysica Acta 400, 283.CrossRefGoogle Scholar
Kayes, J. B. (1976). Journal of Colloid and Interface Science 56, 426.CrossRefGoogle Scholar
Lin, S. H. C., Dewan, R. K., Bloomfield, V. A. & Morr, C. V. (1971). Biochemistry 10, 4788.CrossRefGoogle Scholar
Mackor, E. L. (1951). Journal of Colloid Science 6, 492.CrossRefGoogle Scholar
Noelken, M. E. & Reibstein, M. (1968). Archives of Biochemistry and Biophysics 123, 397.CrossRefGoogle Scholar
Payens, T. A. J. (1978). Faraday Discussion 65 (in the Press).Google Scholar
Pearce, K. N. (1976). Journal of Dairy Research 43, 27.CrossRefGoogle Scholar
Richardson, B. C., Creamer, L. K., Pearce, K. N. & Munford, R. E. (1974). Journal of Dairy Research 41, 239.CrossRefGoogle Scholar
Schmidt, D. G., Both, P., Markwijk, van B. W. & Buchheim, W. (1974a). Biochimica et Biophysica Acta 365, 72.CrossRefGoogle Scholar
Schmidt, D. G. & Buchheim, W. (1970). Milchwissenschaft 25, 596.Google Scholar
Schmidt, D. G. & Payens, T. A. J. (1976). Surface and Colloid Science 9, 165.Google Scholar
Schmidt, D. G., Spek, C. A. van der, Buchheim, W. & Hinz, A. (19746). Milchwissenschaft 29, 455.Google Scholar
Schmidt, D. G., Walstra, P. & Buchheim, W. (1973). Netherlands Milk and Dairy Journal 27, 128.Google Scholar
Scott-Blair, G. W. & Oosthuizen, J. C. (1961). Journal of Dairy Research 28, 165.CrossRefGoogle Scholar
Sood, S. M., Sidhu, K. S. & Dewan, R. K. (1976a). Milchwissenschaft 31, 470.Google Scholar
Sood, S. M., Sidhu, K. S. & Dewan, R. K. (1976b) New Zealand Journal of Dairy Science and Technology 11, 79.Google Scholar
Sood, S. M., Sidhu, K. S. & Dewan, R. K. (1977). Indian Journal of Dairy Science 30, 7.Google Scholar
Thompson, M. P., Boswell, R. T., Martin, V., Jenness, R. & Kiddy, C. A. (1969). Journal of Dairy Science 52, 796.CrossRefGoogle Scholar
Varoqui, R. & Dejardin, P. (1977). Journal of Physical and Colloid Chemistry 66, 4395.CrossRefGoogle Scholar