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EFFECTS OF CO2-N2 ATMOSPHERES ON THE MICROBIAL FLORA OF PORK.

Author(s) : CHRISTOPHER F. M.

Type of article: Article

Summary

PORK LOINS WERE VACUUM-PACKAGED ; ONE GROUP REMAINED VACUUM-PACKAGED, OTHER VACUUM PACKAGES WERE INJECTED WITH GAS ATMOSPHERES OF EITHER 20% CO2+ 80% NITROGEN OR 40% CO2+ 60% NITROGEN. LOINS WERE STORED FOR 7, 14, 21 AND 28 DAYS AT 274-277 K (1-3 C). AFTER EACH STORAGE INTERVAL, CHOPS WERE PREPARED AND SUBJECTED TO 5 DAYS OF RETAIL DISPLAY. PSYCHROTROPHIC BACTERIAL COUNTS OF LEAN AND FAT SURFACES OF LOINS STORED IN 40% CO2+ 60% NITROGEN WERE FREQUENTLY SIGNIFICANTLY LOWER THAN COUNTS OF VACUUM-PACKAGED LOINS. LACTOBACILLUS COUNTS OF THE SUBCUTANEOUS FAT COVER OF LOINS STORED UNDER MODIFIED ATMOSPHERES WERE SIGNIFICANTLY HIGHER THAN THOSE OF VACUUM-PACKAGED LOINS. LACTOBACILLI BECAME A PREDOMINANT PART OF THE MICROFLORA AND COMPRISED MORE THAN 90% OF THE MICROFLORA AFTER 21 DAYS IN MODIFIED ATMOSPHERE AND AFTER 28 DAYS FOR VACUUM-PACKAGED LOINS. PSEUDOMONAS SPP. CONTINUED TO PERSIST TO A GREATER DEGREE IN THE VACUUM-PACKAGED LOINS.

Details

  • Original title: EFFECTS OF CO2-N2 ATMOSPHERES ON THE MICROBIAL FLORA OF PORK.
  • Record ID : 1981-0125
  • Languages: English
  • Source: Journal of Food Protection - vol. 43 - n. 4
  • Publication date: 1980/04
  • Document available for consultation in the library of the IIR headquarters only.

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