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FACTORS CONTROLLING THE GROWTH OF GRAM-NEGATIVE BACTERIA IN VACUUM-PACKED BOLOGNA.

Author(s) : COLLINS-THOMPSON D. L., WOOD D., JONES M.

Type of article: Article

Summary

GRAM-NEGATIVE ORGANISMS WERE ISOLATED FROM VACUUM-PACKED BOLOGNA ONLY AFTER 7-8 WEEKS OF STORAGE AT 278 K (5 DEG C) (ACINETOBACTER, SP., ENTEROBACTER HAFNIAE, ENTEROBACTER AEROGENES, SERRATIA MARCESCENS AND SERRATIA LIQUEFACIENS). NITRITE TOLERANCE TESTS AT PH 5, 5.5 AND 6 SHOWED THAT ONLY ACINETOBACTER SP MAY BE CONTROLLED BY NITRITE AND PH LEVELS ASSOCIATED WITH BOLOGNA DURING THE INITIAL STORAGE PERIOD. ASSOCIATED GROWTH EXPERIMENTS WERE DONE AT 288 K (15 DEG C) UNDER ANAEROBIC CONDITIONS. THESE STUDIES WITH E. AEROGENES AND S. LIQUEFACIENS IN THE PRESENCE OF LACTOBACILLUS BREVIS OR LACTOBACILLUS BUCHNERI SHOWED VARYING DEGREES OF INHIBITION OF THE GRAM-NEGATIVE ISOLATES. THE MAJOR FACTOR WHICH APPEARED TO INFLUENCE THIS INHIBITION WAS GLUCOSE LEVELS.

Details

  • Original title: FACTORS CONTROLLING THE GROWTH OF GRAM-NEGATIVE BACTERIA IN VACUUM-PACKED BOLOGNA.
  • Record ID : 1983-0158
  • Languages: English
  • Source: Journal of Food Protection - vol. 45 - n. 4
  • Publication date: 1982
  • Document available for consultation in the library of the IIR headquarters only.

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