TY - GEN
T1 - Decontamination of chicken frankfurters with pulsed UV-light
AU - Keklik, Nene M.
AU - Demirci, Ali
AU - Puri, Virendra M.
PY - 2009
Y1 - 2009
N2 - The effectiveness of pulsed UV-light on the microbial load and quality of unpackaged and vacuum-packaged chicken frankfurters was investigated. Samples inoculated with Listeria monocytogenes Scoff A on top surfaces were treated with pulsed UV-light for 5, 15, 30, 45, and 60 seconds at 5, 8, and 13 cm distance from the quartz window in a pulsed UV-light chamber. Log reductions (CFU/cm 2) of unpackaged samples were between 0.3 and 1.9 after 5-s treatment at 13 cm (mild) and 60-s treatment at 5 cm (extreme), respectively. Log reductions (CFU/cm2) on vacuum-packaged samples ranged from 0.1 to 1.9 after mild and extreme treatments, respectively. The extent of lipid peroxidation and color were determined by thiobarbituric acid reactive substances (TBARS) test and CIELAB color method, respectively. Lipid peroxidation of samples did not change significantly (p>0.05) after mild and moderate (30-s treatment at 8 cm) treatments. Significant differences (p<0.05) in color parameters were observed after treatments of both unpackaged and vacuum-packaged samples. Packaging material was also analyzed for elastic modulus as a mechanical property. The elastic modulus did not change significantly (p>0.05) after mild treatment. Overall, this study demonstrated that pulsed UV-light has a potential to decontaminate ready-to-eat (RTE) poultry-based food products.
AB - The effectiveness of pulsed UV-light on the microbial load and quality of unpackaged and vacuum-packaged chicken frankfurters was investigated. Samples inoculated with Listeria monocytogenes Scoff A on top surfaces were treated with pulsed UV-light for 5, 15, 30, 45, and 60 seconds at 5, 8, and 13 cm distance from the quartz window in a pulsed UV-light chamber. Log reductions (CFU/cm 2) of unpackaged samples were between 0.3 and 1.9 after 5-s treatment at 13 cm (mild) and 60-s treatment at 5 cm (extreme), respectively. Log reductions (CFU/cm2) on vacuum-packaged samples ranged from 0.1 to 1.9 after mild and extreme treatments, respectively. The extent of lipid peroxidation and color were determined by thiobarbituric acid reactive substances (TBARS) test and CIELAB color method, respectively. Lipid peroxidation of samples did not change significantly (p>0.05) after mild and moderate (30-s treatment at 8 cm) treatments. Significant differences (p<0.05) in color parameters were observed after treatments of both unpackaged and vacuum-packaged samples. Packaging material was also analyzed for elastic modulus as a mechanical property. The elastic modulus did not change significantly (p>0.05) after mild treatment. Overall, this study demonstrated that pulsed UV-light has a potential to decontaminate ready-to-eat (RTE) poultry-based food products.
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M3 - Conference contribution
AN - SCOPUS:76549105159
SN - 9781615673629
T3 - American Society of Agricultural and Biological Engineers Annual International Meeting 2009, ASABE 2009
SP - 1961
EP - 1974
BT - American Society of Agricultural and Biological Engineers Annual International Meeting 2009, ASABE 2009
T2 - American Society of Agricultural and Biological Engineers Annual International Meeting 2009
Y2 - 21 June 2009 through 24 June 2009
ER -