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Effect of pasteurization temperature on the keeping quality of whole milk

  • Monika J. A. Schröder (a1) and Michael A. Bland (a1)

Summary

The keeping quality (KQ) of whole milks pasteurized at 72 °C, 78 °C or 83 °C for 20 s and stored at 12 or 7 °C was examined by assessment of the naturally contaminating thermoduric microflora and of the numbers of Gram-negative rods, a single strain of the latter being introduced deliberately by post pasteurization inoculation. A pasteurization temperature of 83 °C reduced the KQ at 7 °C by about 15% compared with pasteurization at 72 °C or 78 °C, with a 2 d loss in the absence, and aid loss in the presence, of the post pasteurization contamination. The KQ of milks stored at 12 °C was not significantly affected by the pasteurization temperature. Milks pasteurized at 78 °C tended to have a slightly better KQ than those pasteurized at 72 °C, especially at 7 °C. However, pasteurization at both 78 °C and 83 °C caused a reduction in cream rising and considerably increased the risk of cream plugging.

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References

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Brown, J. V., Wiles, R. & Prentice, G. A. 1980 The effects of different time-temperature pasteurization conditions upon the shelf life of single cream. Journal of the Society of Dairy Technology 33 7879
Hoyle, J. B. & Burton, H. 1984 The problem of cream plug in bottled, unhomogenized, pasteurized milk. Journal of the Society of Dairy Technology 37 4245
Pettipher, G. L. & Rodrigues, U. M. 1981 Rapid enumeration of bacteria in heat-treated milk and milk products using a membrane filtration-epifluorescent microscopy technique. Journal of Applied Bacteriology 50 157166
Schröder, M. J. A., 1984 Origins and levels of post pasteurization contamination of milk in the dairy and their effects on keeping quality. Journal of Dairy Research 51 5967
Schröder, M. J. A., Cousins, C. M. & Mckinnon, C. H. 1982 Effect of psychrotrophio post-pasteurization contamination on the keeping quality at 11 and 5 °C of HTST–pasteurized milk in the UK. Journal of Dairy Research 49 619630
Thomé, K. E., Samurlsson, E.-G., Frennborn, T. & Gynnino, K. 1958 [Some factors affecting the formation of cream plug in liquid milk.] Milchitrissenschaft 13 115122
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Journal of Dairy Research
  • ISSN: 0022-0299
  • EISSN: 1469-7629
  • URL: /core/journals/journal-of-dairy-research
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