environment,raw meatand raw productsin two poultry-and pork-processing
plants',J ApplMicrobiol, 91 , 888±899.
CHASSEIGNAUXE GE¬RAULTP TOQUIN M-T RAQIMBEAU C SALVATG COLINPandERMELG
(2002),EcologyofListeriamonocytogenesin the environmentof raw poultry meatand raw porkmeatprocessingplants',FEMSMicrobiolLett, 210 , 271±275. EKLUNDM W POYSKYF T PARANJPYE R N LASHBROOKL C PETERSONM EandPELROYG A (1995),Incidenceand sourcesofListeriamonocytogenesin cold-smokedfishery
productsand processingplants',J FoodProt, 58 , 502±508.
FONNESBECHVOGELB HUSSH OJENIYIB AHRENSPandGRAM L(2001),Elucidationof Listeriamonocytogenescontaminationroutesin cold-smokedsalmonprocessing plantsdetectedby DNA-basedtypingmethods',ApplEnvironMicrobiol, 67 , 2586±2595. FREDRIKSSON-AHOMAA M KORTETandKORKEALAH(2000),Contaminationof carcasses,
offals,and the environmentwithyadA-positiveYersiniaenterocoliticain a pig
slaughterhouse',J FoodProt, 63 , 31±35.
GERNER-SMIDTP BOERLIN P ISCHERFandSCHMIDTJ(1996),High-frequencyendonuclease (REA)typing:resultsfromthe WHOcollaborativestudygroupon subtypingof Listeriamonocytogenes',Int J FoodMicrobiol, 32 , 313±324. GIOVANNACCI I RAGIMBEAUC QUEGUINER S SALVATG VENDEUVREJ-L CARLIERVandERMEL G(1999),Listeriamonocytogenesin porkslaughteringand cuttingplants:use of
RAPD,PFGEand PCR-REAfor tracingand molecularepidemiology',Int J Food
Microbiol, 53 , 127±140.
GREERG NATTRESS G F DILTSBandBAKERL (2004),Bacterialcontaminationof recirculatingbrineusedin the commercialproductionof moisture-enhancedpork', J FoodProt, 67 , 185±188. HARVEYJandGILMOUR A(2001),Characterizationof recurrentand sporadicListeria
monocytogenesisolatesfromraw milkand nondairyfoodsby pulsed-fieldgel
electrophoresis,monocintyping,plasmidprofiling,and cadmiumand antibiotic
resistancedetermination',ApplEnvironMicrobiol, 67 , 840±847.
HEREDIAN GARCI¬A S ROJASGandSALAZARL(2001),Microbiologicalconditionof ground meatretailedin Monterrey,Mexico',J FoodProt, 64 , 1249±1251. HOFFMAN A D GALLK L NORTOND MandWIEDMANN M(2003),Listeriamonocytogenes
contaminationpatternsfor the smokedfish processingenvironmentand for raw
fish',ApplEnvironMicrobiol, 66 , 52±60.
HUDSONW RandMEADG C(1989),Listeriacontaminationat a poultryprocessingplant', Lett ApplMicrobiol, 9 , 211±214. JACQUETC ROCOURTJandREYNAUD A(1993),StudyofListeriamonocytogenescon-
taminationin a dairyplantand characterizationof the strainsisolated',Int J Food
Microbiol, 10 , 13±22.
JOHANSSONT RANTALAL PALMULandHONKANEN-BUZALSKIT(1999),Occurrenceand typingofListeriamonocytogenesstrainsin retailvacuum-packedfish productsand in a productionplant',Int J FoodMicrobiol, 47 , 111±119. KETO-TIMONENR AUTIOTandKORKEALA H(2003),An improvedamplifiedfragment
lengthpolymorphism(AFLP)protocolfor discriminationofListeriaisolates',
SystemApplMicrobiol, 26 , 236±244.
KORKEALAH ALANKOT MA»KELA»PandLINDROTH S(1989),Shelf-lifeof vacuum-packed cookedring sausagesat differentchilltemperatures',Int J FoodMicrobiol, 9 , 237±247. KORKEALA H JandBJO»RKROTHK J(1996),Microbiologicalspoilageand contaminationof
vacuum-packagedcookedsausages.A review',J FoodProt, 60 , 724±731.
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