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STABILITY OF THE RIBOSOME IN BACILLUS CEREUS SPORES.

Author(s) : MAEDA Y., KAWAI Y.

Summary

THE MECHANISM OF THE HEAT RESISTIVITY OF BACILLUS CEREUS SPORES WAS STUDIED BY DIFFERENTIAL SCANNING CALORIMETRY USING THE RIBOSOMES. THE RIBOSOMES OF THE SPORES AND VEGETATIVE CELLS SHOWED THE TRANSITION FROM 335 TO 348 K (62 TO 75 DEG C), WHEN THEY WERE EXTRACTED FROM THE RESPECTIVE INTACT FORMS. THE SAME TRANSITION PROFILE WAS OBSERVED FOR THE RIBOSOMES OBTAINED FROM THE SPORES, EVEN WHEN THEIR WHOLE CELLS WERE HEATED AT 358 K (85 DEG C). ONLY VERY SMALL TRANSITION PEAKS WERE SHOWN FOR THE RIBOSOMES EXTRACTED FROM THE VEGETATIVE CELLS HEATED ATAROUND THE TRANSITION TEMPERATURE OF THE RIBOSOMES IN VITRO. THESE FACTS DEMONSTRATE THAT THE RIBOSOMES ARE PROTECTED UNDER SOME INTERNAL SPECIAL CONDITIONS WITHIN THE SPORES.

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Pages: 1985-1

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Details

  • Original title: STABILITY OF THE RIBOSOME IN BACILLUS CEREUS SPORES.
  • Record ID : 1987-1212
  • Languages: English
  • Source: Fundamentals and Applications of Freeze-Drying to Biological Materials, Drugs and Foodstuffs.
  • Publication date: 1985/05/20
  • Document available for consultation in the library of the IIR headquarters only.

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