Journal
FOODBORNE PATHOGENS AND DISEASE
Volume 11, Issue 1, Pages 15-20Publisher
MARY ANN LIEBERT, INC
DOI: 10.1089/fpd.2013.1597
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The growth and survival of Arcobacter butzleri and Arcobacter cryaerophilus in milk were investigated at different storage temperatures. Three strains of each Arcobacter species were inoculated into ultrahigh-temperature (UHT), pasteurized, and raw cow's milk and stored at 4, 10, and 20 degrees C for 6 days. The survival of Arcobacter spp. during storage was evaluated by a culture method. Results clearly showed that A. butzleri and A. cryaerophilus remained viable in milk when stored at 4 degrees C and 10 degrees C for a period of 6 days. When UHT and pasteurized milk were stored at 20 degrees C, the A. butzleri count increased, with a longer lag-phase in pasteurized milk, whereas the A. cryaerophilus count increased in the first 48h and then rapidly decreased to below the detection limit on the sixth storage day. When raw milk was stored at 20 degrees C, the A. butzleri and A. cryaerophilus counts decreased from the first day of storage and no viable bacteria were recovered on the last day of storage. Generally, A. butzleri displayed a significantly better growth and survival capacity than A. cryaerophilus in milk. The present study is the first to assess the survival and/or growth of A. butzleri and A. cryaerophilus in milk. The evidence suggests that in case of primary contamination of milk or secondary contamination due to postprocessing contamination, milk can act as a potential source of Arcobacter infection in humans and could have public health implications, especially for raw milk consumption.
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