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Influence of homogenization of concentrated milks on the structure and properties of rennet curds

Published online by Cambridge University Press:  01 June 2009

Margaret L. Green ,
Richard J. Marshall  and
Frank A. Glover
Margaret L. Green
Affiliation:
National Institute for Research in Dairying, Shinfield, Reading RG2 9AT, UK
Richard J. Marshall
Affiliation:
National Institute for Research in Dairying, Shinfield, Reading RG2 9AT, UK
Frank A. Glover
Affiliation:
National Institute for Research in Dairying, Shinfield, Reading RG2 9AT, UK
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Summary

Whole milk was concentrated by ultrafiltration in a plant causing some homogenization of the fat. Comparisons were made with milk concentrated in a plant causing little homogenization and with milk homogenized conventionally. None of the processes appreciably affected the casein micelle size distribution. On rennet treatment of homogenized milk, casein micelle aggregation occurred more slowly, the protein network in the curd was less coarse and the rate of whey loss was reduced, compared with non-homogenized milk at the same concentration. In using concentrated milks for cheesemaking homogenization improved the composition of Cheddar cheese, because of increased fat and moisture retention, but curd fusion was poorer. Some aspects of the texture of the mature cheeses were improved, but the free fatty acid levels were higher. Values for the firmness of curds, formed from milks processed in different ways, did not relate to the extent of aggregation of the casein micelles. It is suggested that the complete cheesemaking process is driven by the tendency of the casein to aggregate.

Type
Original Articles
Information
Journal of Dairy Research , Volume 50 , Issue 3 , August 1983 , pp. 341 - 348
Copyright
Copyright © Proprietors of Journal of Dairy Research 1983

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References

REFERENCES

British Standards Institution 1963 a Methods for the chemical analysis of cheese. B.S. no. 770Google Scholar
British Standards Institution 1963 b Methods for the chemical analysis of liquid milk and cream. B.S. no. 1741Google Scholar
British Standards Institution 1969 Gerber method for the determination of fat in milk and milk products. B.S. no. 696, pt. 2Google Scholar
Chapman, H. R., Hosking, Z. D. & Bines, V. E. 1971 The effect on cheese quality and the cheesemaking process of using milk diluted with water. Dairy Industries 36 89–91Google Scholar
Dalgleish, D. G. 1980 Effect of milk concentration on the rennet coagulation time. Journal of Dairy Research 47 231–235CrossRefGoogle Scholar
Davis, J. G. 1965 Cheese vol. 1 London: J. & A. Churchill LtdGoogle Scholar
Emmons, D. B., Kalab, M., Larmond, E. & Lowrie, R. J. 1980 Milk gel structure. X. Texture and microstructure in Cheddar cheese made from whole milk and from homogenized low-fat milk. Journal of. Texture Studies 11 15–34CrossRefGoogle Scholar
Green, M. L., Glover, F. A., Scurlock, E. M. W., Marshall, R. J. & Hatfield, D. S. 1981 a Effect of use of milk concentrated by ultrafiltration on the manufacture and ripening of Cheddar cheese. Journal of Dairy Research 48 333–341CrossRefGoogle Scholar
Green, M. L., Turvey, A. & Hobbs, D. G. 1981 b Development of structure and texture in Cheddar cheese. Journal of Dairy Research 48 343–355CrossRefGoogle Scholar
Harper, W. J., Schwartz, D. P. & El-Hagarawy, I. S. 1956 A rapid silica gel method for measuring total free fatty acids in milk. Journal of Dairy Science 39 46–50CrossRefGoogle Scholar
Hatfield, D. S. 1981 A new instrument to measure cheese curd rigidity, and preliminary trials in cheesemaking. Journal of the Society of Dairy Technology 34 139–142CrossRefGoogle Scholar
Kalab, M. 1977 Milk gel structure. VI. Cheese texture and microstructure. Milchwissenschaft 32 449–458Google Scholar
Kimber, A. M., Brooker, B. E., Hobbs, D. G. & Prentice, J. H. 1974 Electron microscope studies of the development of structure in Cheddar cheese. Journal of Dairy Research 41 389–396CrossRefGoogle Scholar
Koops, J. & Klomp, H. 1977 Rapid colorimetric determination of free fatty acids (lipolysis) in milk by the copper soap method. Netherlands Milk and Dairy Journal 31 56–74Google Scholar
Marshall, R. J. 1982 An improved method for measurement of the syneresis of curd formed by rennet action on milk. Journal of Dairy Research 49 329–336CrossRefGoogle Scholar
Marshall, R. J., Hatfield, D. S. & Green, M. L. 1982 Assessment of two instruments for continuous measurement of the curd-firming of renneted milk. Journal of Dairy Research 49 127–135CrossRefGoogle Scholar
Prokopek, D., Knoop, A. -M. & Buchheim, W. 1976 [Electron microscopical studies of ultrafiltration concentrates of skim-milk and cheese made therefrom 2. Sensorial properties and structure of Camembert cheese.] Kieler Milchwirtschaftliche Forschungsberichte 28 245–268Google Scholar
Shimmin, P. D. 1982 Observations of fat distribution in cheese by incident light fluorescence microscopy. Australian Journal of Dairy Technology 37 33–34Google Scholar