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Updated: Jan 28, 2026

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Published on: November 6, 2016
Types of Bacteria and Shelf-Life of Evacuated Carbon Dioxide-Injected and Ice-Packed Broilers
J S Bailey1, J O Reagan1, J A Carpenter1
1Food Science Department, University of Georgia, Athens, Georgia 30602, and Richard B. Russell Agricultural Research Center, United States Department of Agriculture, Science and Education Administration, P.O. Box 5677, Athens, Georgia 30604.
Abstract:
Broiler carcasses were packed in low-permeability film bags that were evacuated, injected with CO2, then held at 2 C. Broilers were examined microbiologically and for off-odor to determine the shelf-life and types of bacteria. Vacuum level did not significantly affect bacterial counts. Broilers stored in 65% CO2 had a 1-day longer shelf-life than those held in 20% CO2 and about a 5-day longer shelf-life than ice-packed broilers. Spoiled carcasses from either 20 or 65% CO2 packages had an acid-sour off-odor, and more than 90% of the bacteria present were Lactobacillus . Ice-packed broilers had the typical putrid off-odor at spoilage, and more than 95% of the bacteria were non-pigmented Pseudomonas .
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