Effect of low-dose (100 krad) gamma radiation on the microflora of vacuum-packaged ground pork with and without added sodium phosphates

Journal Article · · Journal of Food Science; (USA)

DOI:https://doi.org/10.1111/j.1365-2621.1987.tb05858.x· OSTI ID:5184546

Ehioba, R M; Kraft, A A; Molins, R A; Walker, H W; Olson, D G; Subbaraman, G; Skowronski, R P

Survival and growth of naturally occurring or inoculated bacteria were studied in refrigerated (5{degree}C), vacuum-packaged ground pork irradiated at 100 krad (1kGy). Numbers of naturally occurring mesophiles, psychrotrophs and anaerobes or facultative anaerobes were reduced (P<0.01) by irradiation, whereas lactic acid bacteria were least affected. Partial bacterial recovery during subsequent storage at 5{degree}C suggested sublethal bacterial injury due to irradiation. Irradiation prolong shelf-life 2.5-3.5 days (30-44%) in uninoculated and 1.0-1.5 days in inoculated (10{sup 5} CFU/g) meat. Added sodium acid pyrophosphate (SAPP) (0.4%) contributed two additional days to inoculated, irradiated pork shelf-life but had not effect on the naturally occurring microflora. Lipid oxidation did not increase (P>0.05) due to irradiation and was unaffected by phosphates.

• OSTI ID: 5184546
• Journal Information: Journal of Food Science; (USA), Journal Name: Journal of Food Science; (USA) Vol. 52:6; ISSN 0022-1147; ISSN JFDSA
• Country of Publication: United States
• Language: English

Related Subjects

553004* -- Agriculture &amp; Food Technology-- Food Protection &amp; Preservation-- (1987-)
60 APPLIED LIFE SCIENCES
ALKALI METAL COMPOUNDS
ANIMALS
BACTERIA
BIOLOGICAL EFFECTS
BIOLOGICAL RADIATION EFFECTS
BIOLOGICAL RECOVERY
BIOLOGICAL VARIABILITY
DOMESTIC ANIMALS
ELECTROMAGNETIC RADIATION
FOOD
GAMMA RADIATION
GENETIC VARIABILITY
IONIZING RADIATIONS
IRRADIATION
LIPIDS
LOW DOSE IRRADIATION
MAMMALS
MEAT
MICROORGANISMS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS COMPOUNDS
PRESERVATION
RADIATION EFFECTS
RADIATIONS
RADIOPRESERVATION
RADIOSENSITIVITY EFFECTS
RECOVERY
SODIUM COMPOUNDS
SODIUM PHOSPHATES
STORAGE LIFE
SURVIVAL TIME
SWINE
VERTEBRATES