Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-11-27T00:14:08.408Z Has data issue: false hasContentIssue false
  • English
  • Français

Interaction of factors which influence the extent of lipolysis during milking and storage of raw milk

Published online by Cambridge University Press:  01 June 2009

Eric C. Needs ,
Malcolm Anderson  and
Steven V. Morant
Eric C. Needs
Affiliation:
*National Institute for Research in Dairying (University of Reading), Shinfield, Reading RG2 9 AT, UK
Malcolm Anderson
Affiliation:
*National Institute for Research in Dairying (University of Reading), Shinfield, Reading RG2 9 AT, UK
Steven V. Morant
Affiliation:
*National Institute for Research in Dairying (University of Reading), Shinfield, Reading RG2 9 AT, UK
Get access Rights & Permissions [Opens in a new window]

Summary

The effect of aeration and agitation during milking on free fatty acid (FFA) levels in raw milk was investigated by comparing (a) a dual vacuum system with a ‘round the barn’ installation and (b) a claw piece requiring high air bleed with conventional claw pieces. Reduced milk transfer pressure resulted in a reduction in lipolysis of 54%, while high air bleed led to a 21% increase. FFA values were related to milk yield, stage of lactation and to a lesser extent the incidence of mastitis. These relationships were largely independent of the type of milking equipment. Fat content and somatic cell count did not affect the level of lipolysis. Increases in FFA due to activation by added blood serum were strongly related to the initial FFA concentrations.

Type
Original Articles
Information
Journal of Dairy Research , Volume 53 , Issue 2 , May 1986 , pp. 203 - 210
Copyright
Copyright © Proprietors of Journal of Dairy Research 1986

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Ahrné, L. & Björck, L. 1985 Lipolysis and the distribution of lipase activity in bovine milk in relation to stage of lactation and time of milking. Journal of Dairy Research 52 55–64CrossRefGoogle ScholarPubMed
Anderson, M. 1983 Milk lipase and off flavour development. Journal of the Society of Dairy Technology 36 3–7CrossRefGoogle Scholar
Anderson, M. & Needs, E. C. 1983 Serum lipoprotein stimulation of lipolysis and its relevance to free fatty acid development in bovine milk. Journal of Dairy Research 50 309’319CrossRefGoogle Scholar
Andrews, R. J., Kitchen, B. J., Kwee, W. S. & Duncalfe, F. 1983 Relationship between individual cow somatic cell counts and the mastitis infection status of the udder. Australian Journal of Dairy Technology 38 71–77Google Scholar
Bengtsson, G. & Olivecrona, T. 1980 Lipoprotein lipase. Mechanism of product inhibition. European Journal of Biochemistry 106 557–562CrossRefGoogle ScholarPubMed
Chilliard, Y. 1980 [Physiological variations in lipase activity and spontaneous lipolysis in bovine, caprine and human milk: a review.] Lait 62 1–31, 126–154CrossRefGoogle Scholar
Deeth, H. C. & Fitz-Gerald, C. H. 1978 The relationship between mastitis and lipolysis in individual milks. 20th International Dairy Congress, Paris. Brief Communications 308–309Google Scholar
Fleming, M. G. 1979 Lipolysis in bovine milk as affected by mechanical and temperature activation – a review. Irish Journal of Food Science and Technology 3 111–129Google Scholar
Griffin, T. K., Bramley, A. J. & Dodd, F. H. 1980 Milking machine modifications in the control of bovine mastitis. Proceedings, International Workshop on Machine Milking and Mastitis, pp. 19–20. Moorepark, Fermoy, Irish Republic: An Foras TalúntaisGoogle Scholar
Griffin, T. K., Dodd, F. H., Neave, F. K., Westoarth, D. R., Kingwill, R. G. & Wilson, C. 1977 A method of diagnosing intramammary infection in dairy cows for large experiments. Journal of Dairy Research 44 25–45CrossRefGoogle ScholarPubMed
Griffin, T. K. & Grindal, R. J. 1981 Modification of milking machines to prevent inter-quarter transfer of pathogens during milking. In Mastitis Control and Herd Management 173–175 (Eds Bramley, A. J., Dodd, F. H. and Griffin, T. K.). Shinfield, Reading: National Institute for Research in Dairying (NIRD Technical Bulletin no. 4)Google Scholar
Gudding, R. 1982 Increased free fatty acid concentrations in mastitic milk. Journal of Food Protection 45 1143–1144CrossRefGoogle ScholarPubMed
International Dairy Federation 1971 Electronic counting of somatic cells in milk: a recommended procedure for milk sample preparation and cell counting with a Coulter counter, International Dairy Federation Annual Bulletin, part 2, pp. 23–31 (Appendix 1)Google Scholar
Jaartsveld, F. H. J., Van Puffelen, E., Oskam, J., Tielen, M. J. M., Verstegen, M. W. A. & Albers, G. A. A. 1983 Somatic cell counts in milk of dairy cows in relation to stage of lactation, age, production level and presence of pathogens. Netherlands Milk and Dairy Journal 37 79–90Google Scholar
Jellema, A. 1975 Note on susceptibility of bovine milk to lipolysis. Netherlands Milk and Dairy Journal 29 145–152Google Scholar
Jellema, A. & Schipper, C. J. 1975 Influence of milking machine installations on lipolysis in farmmilk. International Dairy Federation Annual Bulletin Document 86 138–140Google Scholar
Jones, G. M., Pearson, R. E., Clabaugh, F. A. & Heald, C. W. 1984 Relationships between somatic cell counts and milk production. Journal of Dairy Science 67 1823–1831CrossRefGoogle ScholarPubMed
Judge, F. J., Fleming, M. G., O'shea, J. & Raftery, T. F. 1977 Effect of milking pipeline height and excessive air admission at the claw on free fatty acid development in raw milk. Irish Journal of Agricultural Research 16 115–122Google Scholar
Jurczak, M. E. & Sciubisz, A. 1981 Studies on the lipolytic changes in milk from cows with mastitis. Milchwissenschaft 36 217–219Google Scholar
Kankare, V. & Antila, V. 1978 Influence of pipeline milking machines on lipolysis in farm milk. 20th International Dairy Congress, Paris. Brief Communications 132Google 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
Mulder, H., & Walstra, P. 1974 The milk fat globule. Emulsion science as applied to milk products and comparable foods pp. 123–125Farnham Royal: Commonwealth Agricultural BureauxGoogle Scholar
Needs, E. C. & Anderson, M. 1984 Lipid composition of milks from cows with experimentally induced mastitis. Journal of Dairy Research 51 239–249CrossRefGoogle ScholarPubMed
Pettipher, G. L. & Rodrigues, T. J. M. 1981 Rapid membrane filtration epifluorescent microscopic technique for the direct enumeration of somatic cells in fresh and formalin-preserved milk. Journal of Dairy Research 48 239–246CrossRefGoogle Scholar
Pillay, V. T., Myhr, A. N., Gray, J. I. & Biggs, D. A. 1980 Lipolysis in milk. II. Effect of milking systems. Journal of Dairy Science 63 1219–1223CrossRefGoogle Scholar
Renner, E. & Shahin, Y. 1978 Effect of lactation stage on the content of free fatty acids in milk. 20th International Dairy Congress, Paris. Brief Communications 274–275Google Scholar
Salih, A. M. A. & Anderson, M. 1979 Effect of diet and stage of lactation on bovine milk lipolysis. Journal of Dairy Research 46 623–631CrossRefGoogle Scholar
Salvatierra, S., Stannard, D. J. & Parkinson, R. D. J. 1978 The effect of two types of milking claws on foaming and fat globule damage in milking. New Zealand Journal of Dairy Science and Technology 13 111–113Google Scholar
Shipe, W. F., Senyk, G. F. & Fountain, K. B. 1980 Modified copper soap solvent extraction method for measuring free fatty acids in milk. Journal of Dairy Science 63 193–198CrossRefGoogle Scholar
Tallamy, P. T. & Randolph, H. E. 1969 Influence of mastitis on properties of milk. IV. Hydrolytic rancidity. Journal of Dairy Science 52 1569–1572CrossRefGoogle ScholarPubMed