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MICROBIAL FLORA OF NORMAL AND HIGH PH BEEF STORED AT 277K (4 DEG C) IN DIFFERENT GAS ENVIRONMENTS.

Author(s) : ERICHSEN I., MOLIN G.

Type of article: Article

Summary

BEEF OF HIGH PH (6.6) AND OF NORMAL PH (5.8) WAS PACKED IN AIR, A MIXTURE OF 78% N2 + 20% CO2 + 2% O2, VACUUM, AND 100% CO2 AND STORED AT 277K (4 DEG C). THE SHELF-LIFE INCREASED IN THE ORDER: PURE CO2 VACUUM GAS MIXTURE (20% CO2) AIR. AFTER STORAGE IN AIR FOR 14 DAYS, PSEUDOMONAS SPP. COMPRISED 76% OF THE FLORA ON THE NORMAL BEEF AND 88% OF THE FLORA ON THE HIGH PH BEEF. IN THE GAS MIXTURE, AFTER 21DAYS THE MICROBIAL FLORA ON THE NORMAL BEEF WAS DOMINATED BY LACTIC ACID BACTERIA (52%), ENTEROBACTERIACEAE (16%) AND CORYNEFORMS (16%) WHILE THE HIGH PH BEEF CONTAINED PSEUDOMONAS SPP. (44%), LACTIC ACID BACTERIA (28%) AND BROCHOTHRIX THERMOSPHACTA (28%). IN THE VACUUM, AFTER 21 DAYS 96% OF THE FLORA IN NORMAL BEEF CONSISTED OF LACTIC ACID BACTERIA, WHEREAS 60% LACTIC ACID BACTERIA AND 40% B. THERMOSPHACTA WERE FOUND ON THE HIGH PH BEEF. IN PURE CO2, STORED FOR 51 DAYS, BOTH THE NORMAL AND HIGH PH BEEF WERE COMPLETELY DOMINATED BY LACTIC ACID BACTERIA.

Details

  • Original title: MICROBIAL FLORA OF NORMAL AND HIGH PH BEEF STORED AT 277K (4 DEG C) IN DIFFERENT GAS ENVIRONMENTS.
  • Record ID : 1982-1244
  • Languages: English
  • Source: Journal of Food Protection - vol. 44 - n. 11
  • Publication date: 1981
  • Document available for consultation in the library of the IIR headquarters only.

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