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Stimulation of Streptococcus thermophilus growth in mastitic milk

  • Valerie M. Marshall (a1) and A. John Bramley (a1)

Summary

Growth of Streptococcus thermophilus was faster in mastitic milk, aseptically collected following intramammary infusion of Escherichia coli endotoxin, than in normal aseptically collected milk. The contribution of polymorphonuclear leucocytes (PMN), of plasma and plasmin to this stimulation has been investigated. Addition of plasmin to low cell count milk stimulated growth of the streptococcus to the same degree as mastitic milk. However, addition of plasma or PMN from blood or from milk were less stimulatory. The part played by these components in providing casein breakdown products for the weakly proteolytic Str. thermophilus in mastitic milk is discussed.

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References

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Andrews, A. T. 1979 The formation and structure of some proteose-peptone components. Journal of Dairy Research 46 215218
Andrews, A. T. 1983 Breakdown of caseins by proteinases in bovine milks with high cell counts arising from mastitis or infusion with bacterial endotoxin. Journal of Dairy Research 50 5766
Barry, J. G. & Donnelly, W. J. 1981 Casein compositional studies. II. The effect of secretory disturbance on casein composition in freshly drawn and aged bovine milks. Journal of Dairy Research 48 437446
Bramley, A. J. 1976 Variations in the susceptibility of lactating and non-lactating bovine udders to infection when infused with Escherichia coli. Journal of Dairy Research 43 205211
Bretz, U. 1978 Subcellular localization of plasminogen activator in human neutrophils. Experientia 34 934
Carlson, G. P. & Kaneko, J. J. 1973 Isolation of leukocytes from bovine peripheral blood. Proceedings of the Society of Experimental Biology and Medicine 142 853856
De Rham, O. & Andrews, A. T. 1982 a The roles of native milk proteinase and its zymogen during proteolysis in normal bovine milk. Journal of Dairy Research 49 577585
De Rham, O. & Andrews, A. T. 1982 b Qualitative and quantitative determination of proteolysis in mastitic milks. Journal of Dairy Research 49 587596
Desmazeaud, M. J. & Juge, M. 1976 [Characterization of proteolytic activity and fractionation of dipeptidases and aminopeptidases of Streptococcus thermophilus.] Lait 56 241260
Ducruet, P., Maubois, J.-L., Goudedranche, H. & Pannetier, R. 1981 [Manufacture of semi-hard cheese involving propionic fermentation by the MMV method.] Technique Laitière no. 957 1316
Eigel, W. N., Hofmann, C. J., Chibber, B. A. K., Tomich, J. M., Keenan, T. W. & Mertz, E. T. 1979 Plasmin-mediated proteolysis of casein in bovine milk. Proceedings of the National Academy of Sciences of the United States of America 76 22442248.
Halpaap, I., Reimerdes, E. H. & Klostermeyer, H. 1977 [Milk proteinases. IV. Comparative isolation of plasminogen from bovine blood and a proteinase from cow's milk.] Milchwissenschaft 32 341346.
Humbert, G. & Alais, C. 1979 Review of the progress of Dairy Science: the milk proteinase system. Journal of Dairy Research 46 559571.
Kaminogawa, S., Mizobuchi, H. & Yamauchi, K. 1972 Comparison of bovine milk proteinase with plasmin. Agricultural and Biological Chemistry 36 21632167.
Kosikowski, F. V. 1977 Cheese and Fermented Milk Foods 2nd ednMichigan: Edwards Brothers
Noomen, A. 1975 Proteolytic activity of milk protease in raw and pasteurized cow's milk. Netherlands Milk and Dairy Journal 29 153161
Ossowski, L., Biegel, D. & Reich, E. 1979 Mammary plasminogen activator: correlation with involution, hormonal modulation and comparison between normal and neoplastic tissue. Cell 16 929940.
Paape, M. J., Wergin, W. P., Guidry, A. J. & Pearson, R. E. 1977 Leukocytes – second line of defense against invading mastitis pathogens. Journal of Dairy Science 62 135153.
Pettipher, G. L. & Rodrigues, U. 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 239246
Rabier, D. & Desmazeaud, M. J. 1973 [Investigation of the different intracellular peptidase activities of Streptococcus thermophilus.] Biochimie 55 389404
Russell, M. W., Brooker, B. E. & Reiter, B. 1976 Inhibition of the bactericidal activity of bovine polymorphonuclear leucocytes and related systems by casein. Research in Veterinary Science 20 3035
Shankar, P. A. 1977 Interrelationships of Streptococcus thermophilus and Lactobacillus bulgaricus in yoghurt culture. Ph.D. thesis. University of Reading, Reading, UK
Thomas, T. D. & Mills, O. E. 1981 Proteolytic enzymes of starter bacteria. Netherlands Milk and Dairy Journal 35 255273
Tinson, W., Hillier, A. J. & Jago, G. R. 1982 Metabolism of Streptococcus thermophilus 1. Utilisation of lactose, glucose and galactose. Australian Journal of Dairy Technology 37 813.
Yamauchi, K. & Kaminogawa, S. 1972 Decomposition of milk proteins by milk protease. Agricultural and Biological Chemistry 36 249254

Stimulation of Streptococcus thermophilus growth in mastitic milk

  • Valerie M. Marshall (a1) and A. John Bramley (a1)

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