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EFFECT OF AERATION ON EXTRACELLULAR ENZYME SYNTHESIS BY PSYCHROTROPHS GROWING IN MILK DURING REFRIGERATED STORAGE.

Author(s) : GRIFFITHS M. W., PHILLIPS J. D.

Type of article: Article

Summary

AERATING MILK MARKEDLY REDUCED PROTEOLYSIS BUT INCREASED LIPOLYSIS DURING STORAGE AT 279 K (6 DEG C). THE INCREASE IN LIPOLYSIS WAS DUE TO NATIVE MILK LIPOPROTEIN LIPASE, AND AERATION CONDITIONS COULD BE MODIFIED TO OVERCOME THIS DELETERIOUS EFFECT. THE DECREASE IN PROTEOLYSIS WAS DUE PRIMARILY TO A DECREASE IN THE AMOUNT OF PROTEASE SYNTHESIZED. PROTEASE AND LIPASE PRODUCTION BY PSYCHROTROPHS GROWING IN MILK WAS SUBJECT TO CATABOLITE REPRESSION BY GLUCOSE. DIFFERENCES IN LEVELS OF CERTAIN METABOLITES PRODUCED BY BACTERIAMAY BE A FACTOR CONTRIBUTING TO THE DECREASE IN PROTEASE ACTIVITY.

Details

  • Original title: EFFECT OF AERATION ON EXTRACELLULAR ENZYME SYNTHESIS BY PSYCHROTROPHS GROWING IN MILK DURING REFRIGERATED STORAGE.
  • Record ID : 1985-1149
  • Languages: English
  • Source: Journal of Food Protection - vol. 47 - n. 9
  • Publication date: 1984
  • Document available for consultation in the library of the IIR headquarters only.

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