Polymerase chain reaction detection of foodborne Salmonella spp. in animal feeds

Critical Reviews in Microbiology

Volumn 31, Issue 1, 2005, Pages 45-53

  Maciorowski, K G ^a   Pillai, S D ^b   Jones, F T ^c   Ricke, Steven C ^b  

^a DELAWARE STATE UNIVERSITY   (United States)

^b TEXAS A AND M UNIVERSITY   (United States)

^c UNIVERSITY OF ARKANSAS   (United States)

Author keywords

Animals Feed; Detection; Polymerase Chain Reaction; Salmonella spp.

Indexed keywords

ANIMAL FOOD; ARTICLE; BACTERIUM CULTURE; BACTERIUM DETECTION; EXTRACTION; FOOD CONTAMINATION; FOOD INDUSTRY; FOOD PROCESSING; HYBRIDIZATION; POLYMERASE CHAIN REACTION; PRIORITY JOURNAL; PUBLIC HEALTH; SALMONELLOSIS;

ANIMAL FEED; ANIMALS; FOOD MICROBIOLOGY; POLYMERASE CHAIN REACTION; SALMONELLA;

ANIMALIA; SALMONELLA;

EID: 16244390255     PISSN: 1040841X     EISSN: None     Source Type: Journal    
DOI: 10.1080/10408410590912970     Document Type: Article

References (104)

1. Aabo, S., Rasmussen, O.P., Rossen, L., Sørensen, P.D., and Olsen, J.E. 1993. Salmonella identification by the polymerase chain reaction. Mol. Cell. Probes. 7, 171-178.
2. Andrews, W.H., June, G.A., Sherrod, P.S., Hammack, T.S., and Amaguaña, R.M. 1995. Salmonella. In: Bacteriological Analytical Manual, 8th ed., pp. 5.01-5.20. Gaithersburg, MD: JOAC.
3. Bailey. J.S. 1998. Detection of Salmonella cells within 24 to 36 hours in poultry samples with the polymerase chain reaction BAX system. J. Food Prot. 61, 792-795.
4. Bandekar, J.R., Ussuf, K.K., and Nair, P.M. 1995. Detection of salmonellae in chicken and fish samples using DNA probe. J. Food Safety. 15, 11-19.
5. Bej, A.K., Mahbubani, M.H., Dicesare, J.L., and Atlas, R.M. 1991. Polymerase chain reaction-gene probe detection of microorganisms by using filter-concentrated samples. Appl. Environ. Microbiol. 57, 3529-3534.
6. Bej, A.K., and Mahbubani, M.H. 1994. Detection of microbial pathogens in the gastrointestinal tract using PCR and gene probe methods in PCR-Based Diagnostics in Infectious Disease, Elrich, G.D. and Greenberg, S.J., Eds., Boston, MA: Blackwell Scientific Publications, 559-591.
7. Bej, A.K., Southworth, J.P., Law, R., Mahbubani, M.H., and Jones, D.D. 1996. Detection of Salmonella in chicken meat using PCR. Food Testing & Anal. 2, 17-20.
8. Bennett, A.R., Greenwood, D., Tennant, C., Banks, J.G., and Betts, R.P. 1998. Rapid and definitive detection of Salmonella in foods by PCR. Lett. Appl. Microbiol. 26, 437-441.
9. Bertin, Y., Martin, C., Oswald, E., and Girardeau, J.-P. 1996. Rapid and specific detection of F17-related pilin and adhesin genes in diarrheic and septicemic Escherichia coli strains by multiplex PCR. J. Clin. Microbiol. 34, 2921-2928.
10. Bolton, F.J., Fritz, E., and Poynton, S. 2000. Rapid enzyme-linked immunoassay for detection of Salmonella in food and feed products: performance testing program. J. AOAC Int. 83, 299-303.
11. Burr, M.D., Josephson, K.L., and Pepper, I.L. 1998. An evaluation of ERIC PCR and AP PCR fingerprinting for discriminating Salmonella serotypes. Lett. Appl. Microbiol. 27, 24-30.
12. Burtscher, C., Fall, P.A., Wilderer, P. A., and Wuertz, S. 1999. Detection of Salmonella spp. and Listeria monocytogenes in suspended organic waste by nucleic acid extraction and PCR. Appl. Environ. Microbiol. 65, 2235-2237.
13. Bustin, S.A. 2000. Absolute quantification of mRNA using real-time reverse transcription polymerase chain reaction assays. J. Mol. Endocrinol. 25, 169-193.
14. Bustin, S.A. 2002. Quantification of mRNA using real-time reverse transcription PCR (RT-PCR): trends and problems. J. Mol. Endocrinol. 29, 23-39.
15. Candrian, U. 1995. Polymerase chain reaction in food microbiology. J. Microbiol. Meth. 23, 89-103.
16. Carlson, S.A., Bolton, L.F., Briggs, C.E., Hurd, H.S., Sharma, V.K., Fedorka-Cray, P.J., and Jones, B.D. 1999. Detection of multiresistant Salmonella typhimurium DT104 using multiplex and fluorogenic PCR. Mol. Cell. Probes. 13, 213-222.
17. Chan, S.W., Wilson, S., Hsu, H.-Y., King, W., Halbert, D.H., and Klinger, J.D. 1988. Model non-isotopic hybridization systems for detection of food-borne bacteria: preliminary results and future prospects, in Biotechnology and Food Quality, S. Kung, D.D. Bills and R. Quatrano, Eds., Boston, MA: Butterworths, 219-237.
18. Chen, S., Yee, A., Griffiths, M., Larkin, C., Yamashiro, C.T., Behari, R., Paszko-Kolva, C., Rahn, K., and De Grandis, S.A. 1997. The evaluation of a fluorogenic polymerase chain reaction assay for the detection of Salmonella species in food commodities. Int. J. Food Microbiol. 35, 239-250.
19. Arg (fimU) and expression of SEF14 and SEF21 in Salmonella enteritidis. J. Bacteriol. 180, 840-845.
20. Cohen, H.J., Mechanda, S.M., and Lin, W. 1996. PCR amplification of the fimA gene sequence of Salmonella typhimurium, a specific method for detection of Salmonella spp. Appl. Environ. Microbiol. 62, 4303-4308.
21. Cohen, N.D., McGruder, E.D., Neibergs, H.L., Behle, R.W., Wallis, D.E., and Hargis, B.M. 1994a. Detection of Salmonella enteriditis in feces from poultry using booster polymerase chain reaction and oligonucleotide primers specific for all members of the genus Salmonella. Poult. Sci. 73, 354-357.
22. Cohen, N.D., Wallis, D.E., Neibergs, H.L., McElroy, A.P., McGruder, E.D., DeLoach, J.R., Corrier, D.E., and Hargis, B.M. 1994b. Comparison of the polymerase chain reaction using genus-specific oilgonucleotide primers and microbiologic culture for the detection of Salmonella in drag-swabs from poultry houses. Poult. Sci. 73, 1276-1281.
23. Coquard, D., Exinger, A., and Jeltsch, J.-M. 1999. Routine detection of Salmonella species in water: comparative evaluation of ISO and Probelia™ polymerase chain reaction methods. J. Assoc. Official Anal. Chem. Int. 82, 871-876.
24. Cox, N.A. 1988. Salmonella methodology update. Poult. Sci. 67, 921-927.
25. D'Aoust. J.-Y., Sewell. A.M., Greco, P., Mozola, M.A., and Colvin, R.E. 1995. Performance assessment of the GENE-TRAK® colorimetric probe assay for the detection of foodborne Salmonella spp. J. Food Prot. 58, 1069-1076.
26. De Medici, D., Croci, L., Delibato, E., Di Pasquale, S., Filetici, E., and Toti, L. 2003. Evaluation of DNA extraction methods for use in combination with SYBR green I real-time PCR to detect Salmonella enterica serotype Enteritidis in poultry. Appl. Environ. Microbiol. 69, 3456-3461.
27. Dill, K., Stanker, L.H., and Young, C.R. 1999. Detection of Salmonella in poultry using a silicon chip-based sensor. J. Biochem. Biophys. Meth. 41, 61-67.
28. Dodson, S.V., Mauer, J.J., Holt. P.S., and Lee, M.D. 1999. Temporal changes in the population genetics of Salmonella pullorum. Avian Dis. 43, 685-695.
29. Doran, J.L., Collinson, S.K., Kay, C.M., Banser, P.A., Burian, J., Munro, C.K., Lee, S.H., Somers, J.M., Todd, E.G., and Kay, W.W. 1994. FimA and tctC based DNA diagnostics for Salmonella. Mol. Cell. Probes. 8, 291-310.
30. Ellingson, J.L.E., Anderson, J.L., Carlson, S.A., and Sharma, V.K. 2004. Twelve hour real-time PCR technique for the sensitive and specific detection of Salmonella in raw and ready-to-eat meat products. Mol. Cell. Probes. 18, 51-57.
31. Endley, S., Peña, J., Ricke, S.C., and Pillai, S.D. 2001. The applicability of hns and fimA primers for detecting Salmonella in bioaerosols associated with animal and municipal wastes. World J. Microbiol. Biotechnol. 17, 363-369.
32. Eyigor, A., and Carli, K.T. 2003. Rapid detection of Salmonella from poultry by real-time polymerase chain reaction with fluorescent hybridization probes. Avian Dis. 47, 380-386.
33. Fach, P., Dilasser, F., Grout, J., and Tache, J. 1999. Evaluation of a polymerase chain reaction-based test for detecting Salmonella spp. in food samples: probelia Salmonella spp. J. Food Prot. 62, 1387-1393.
34. Fey, A., Eichler, S., Flavier, S., Christen, R., Höfle, M.G., and Gúzman, C.A. 2004. Establishment of a real-time PCR-based approach for accurate quantification of bacterial RNA targets in water, using Salmonella as a model organism. Appl. Environ. Microbiol. 70, 3618-3623.
35. Fluit, A.C., Widjojoatmodjo, M.N., Box, A.T.A., Torensma, R., and Verhoef, J. 1993. Rapid detection of salmonellae in poultry with the magnetic immunopolymerase chain reaction assay. Appl. Environ. Microbiol. 59, 1342-1346.
36. Fratamico, P.M., and Strobaugh, T.P. 1998. Simultaneous detection of Salmonella spp. and Escherichia coli O157:H7 by multiplex PCR. J. Ind. Microbiol. Biotechnol. 21, 92-98.
37. Gooding, C.M., and Choudary, P.V. 1999. Comparison of different primers for rapid detection of Salmonella using the polymerase chain reaction. Mol. Cell. Probes. 13, 341-347.
38. Gouws, P.A., Visser, M., and Brözel, V.S. 1998. A polymerase chain reaction procedure for the detection of Salmonella spp. within 24 hours. J. Food Prot. 61, 1039-1042.
39. Grimont, P.A.D., Grimont, F., and Bouvet, P. 2000. Taxonomy of the genus Salmonella, in Salmonella in Domestic Animals, C. Wray and A. Wray, Eds., Wallingford, UK: CAB International, 1-17.
40. Guo, L., Killefer, J., Kenney, P.B., and Amick-Morris, J.D. 1999. Use of arbitrarily primed polymerase chain reaction to study Salmonella ecology in a turkey production environment. Poult. Sci. 78, 24-31.
41. Guthrie, R.K. 1992. Microbiological methods for detection of Salmonella contamination, in Salmonella, Boca Raton, Ed., FL: CRC Press, 131-156.
42. Hill, W.E., and Lampel, K.A. 1990. Gene probes used in food microbiology, in Biotechnology and Food Safety, D.D. Bills and S.-D. Kung, Eds., Boston. MA: Butterworth-Heinemann, 139-165.
43. Hill. W.E., and Keasler, S.P 1991. Identification of foodborne pathogens by nucleic acid hybridization. Int. J. Food Microbiol. 12, 67-76.
44. Hilton, A.C., Banks, J.G., and Penn, C.W. 1997. Optimization of RAPD for fingerprinting Salmonella. Lett. Appl. Microbiol. 24, 243-248.
45. Hilton, A.C., and Penn, C.W. 1998. Restriction enzyme analysis of randomly amplified polymorphic DNA amplicons of Salmonella enterica ser. Enteritidis PT4 and Typhimurium DT104. Lett. Appl. Microbiol. 27, 158-162.
46. Hofstra, H., van der Vossen, J.M.B.M., and van der Plas, J. 1994. Microbes in food processing technology. FEMS Microbiol. Rev. 15, 175-183.
47. Hoorfar, J., Baggesen, D.L., and Porting. P.H. 1999. A PCR-based strategy for simple and rapid identification of rough presumptive Salmonella isolates. J. Microbiol. Meth. 35, 77-84.
48. Hulton, C.S.J., Higgins, C.F., and Sharp, P.M. 1991. ERIC sequences: a novel family of repetitive elements in the genomes of Escherichia coli, Salmonella typhimurium and other enterobacteria. Mol. Microbiol. 5, 825-834.
49. Jitrapakdee, S., Tassanakajon, A., Boonsaeng, V., Piankijagum, S., and Panyim, S.A. 1995. A simple, rapid and sensitive detection of Salmonella in food by polymerase chain reaction. Mol. Cell. Probes. 9, 375-382.
50. Jones, F.T., Axtell, R.C., Rives, D.V., Scheideier, S.E., Tarver Jr., F.R., Walker, R.L., and Wineland, M.J. 1991. A survey of Salmonella contamination in modern broiler production. J. Food Prot. 54, 502.
51. Jones, D.D., Law, R., and Bej, A.K. 1993. Detection of Salmonella spp. in oysters using polymerase chain reactions (PCR) and gene probes. J. Food Sci. 58, 1191-1197.
52. Jones, F.T., and Ricke, S.C. 1994. Researchers propose tentative HACCP plan for feed mills. Feedstuffs. 66(18), 32, 36-37.
53. Khan, A.A., Nawaz, M.S., Khan, S.A., and Cerniglia, C.E. 2000. Detection of multidrug-resisitant Salmonella typhimurium DT104 by multiplex polymerase chain reaction. FEMS Microbiol. Lett. 182, 355-360.
54. Kimura, B., Kawasaki, S., Fujii, T., Kusunoki, J., Itoh, T., and Flood, S.J.A. 1999. Evaluation of TaqMan PCR assay for detecting Salmonella in raw meat and shrimp. J. Food Prot. 62, 329-335.
55. Knutsson, R., Löfström, C., Grage, H., Hoorfar, J., and Rådström, P. 2002. Modeling of 5′ nuelease real-time responses for optimization of high-throughput enrichment PCR procedure for Salmonella enterica. J. Clin. Microbiol. 40, 52-60.
56. Kreader, C. A. 1996. Relief of amplification inhibition in PCR with bovine serum albumin or T4 gene 32 protein. Appl. Environ. Microbiol. 62. 1102-1106.
57. Kwang, J., Littledike, E.T., and Keen, J.E. 1996. Use of the polymerase chain reaction for Salmonella detection. Lett. Appl. Microbiol. 22, 46-51.
58. Kwon, Y.M., Woodward, C.L., Peña, J., Corrier, D.E., Pillai, S.D., and Ricke, S.C. 1999. Comparison of methods for processing litter and air filter matrices from poultry houses to optimize polymerase chain reaction detection of Salmonella typhimurium. J. Rapid Meth. Auto. Microbiol. 7, 103-111.
59. Kwon, Y.M., Woodward, C.L., Pillai, S.D., Pefia, J., Comer, D.E., Byrd, J.A., and Ricke, S.C. 2000. Litter and aerosol sampling of chicken houses for rapid detection of Salmonella typhimurium contamination using gene amplification. J. Industrial Microbiol. Biotechnol. 24. 379-382.
60. Laubach, C., Rathgeber, J., Oser, A., and Palumbo, S. 1998. Microbiology of the swine head meat deboning process. J. Food Prot. 61, 249-252.
61. Lin, A.W., Usera, M.A., Barrett, T.J., and Goldsby, R.A. 1996. Application of randomamplified polymorphic DNA analysis to differentiate strains of Salmonella enteritidis. J. Clin. Microbiol. 34, 870-876.
62. Lin, J.-S., and Tsen, H.-Y. 1999. Development and use of polymerase chain reaction for the specific detection of Salmonella Typhimurium in stool and food samples. J. Food Prot. 62, 1103-1110.
63. Ling, J.M., Lo, N.W.S., Ho, Y.M., Kam, K.M., Hoa, N.T.T., Phi, L.T., and Cheng, A.F. 2000. Molecular methods for the epidemiological typing of Salmonella enterica serotype Typhi from Hong Kong and Vietnam. J. Clin. Microbiol. 38, 292-300.
64. Löfström, C., Knutsson, R., Axelsson, C.E., and Rådström, P. 2004. Rapid and specific detection of Salmonella spp. in animal feed samples by PCR after culture enrichment. Appl. Environ. Microbiol. 70, 69-75.
65. Maciorowski, K.G., Pena, J., Pillai, S.D., and Ricke, S.C. 1998. Application of gene amplification in conjunction with a hybridization sensor for rapid detection of Salmonella spp. and fecal contamination indicators in animal feeds. J. Rapid Meth. Auto. Microbiol. 6, 225-238.
66. Maciorowski, K.G., Pillai, S.D., and Ricke, S.C. 2000. Efficacy of a commercial polymerase chain reaction-based assay for detection of Salmonella spp. in animal feeds. J. Appl. Microbiol. 89, 710-718.
67. Mackay, I.M. 2004. Real-time PCR in the microbiology laboratory. Clin. Microbiol. Infect. 10, 190-212.
68. Mahon, J., Murphy, C.K., Jones, P.W., and Barrow, P.A. 1994. Comparison of multiplex PCR and standard bacteriological methods of detecting Salmonella on chicken skin. Lett. Appl. Microbiol. 19, 169-172.
69. Makino, S.-I., Kurazono, H., Chongsanguam, M., Hayashi, H., Cheun, H.-L, Suzuki, S., and Shirahata, T. 1999. Establishment of the PCR system specific to Salmonella spp. and its application for the inspection of food and fecal samples. J. Vet. Med. Sci. 61, 1245-1247.
70. Manzano, M., Cocolin, L., Astori, G., Pipan, C., Botta, G.A., Cantoni. C., and Comi, G. 1998. Development of a PCR microplate-capture hybridization method for simple, fast and sensitive detection of Salmonella serovars in food. Mol. Cell. Probes. 12, 227-234.
71. Marsh, M., and Hillyard, D.R. 1990. Nucleotide sequence of hns encoding the DNA-binding protein of H-NS of Salmonella typhimurium. Nucleic Acids Res. 18, 3397.
72. Miyamoto, T., Tian, H.Z., Okabe, T., Trevanich, S., Asoh, K., Tomoda, S., Honjoh, K.-I., and Hatano, S. 1998. Application of random amplified polymorphic DNA analysis for detection of Salmonella spp. in foods. J. Food Prot. 61,785-791.
73. Mrozinski, P.M., and Betts, R.P. 1998. Performance tested method certification of BAX™® for screening/Salmonella: a case study. J. Official Meth. Anal. Assoc. Official Anal. Chem. 81, 1147-1154.
74. Nogva, H.K.,andLillehaug,D. 1999. Detection and quantification of Salmonella in pure cultures using 5′-nuclease polymerase chain reaction. Int. J. Food Microbiol. 51, 191-196.
75. Peña, J., Ricke, S.C., Shermer, C.L., Gibbs, T., and Pillai, S.D. 1999. A gene amplification - Hybridization sensor based methodology to rapidly screen aerosol samples for specific bacterial gene sequences. J. Environ. Sci. Health. A34, 529-566.
76. Pepper, I.L., and Pillai, S.D. 1994. Detection of specific DNA sequences in environmental samples via polymerase chain reaction, in Methods of Soil Analysis, Part 2, Microbiological and Biochemical Properties, Soil Science Society of America Madison, WI 707-726.
77. Pillai, S.D., Josephson, K.L., Bailey, R.L., Gerba, C.P., and Pepper, I.L. 1991. Rapid method for processing soil samples for polymerase chain reaction amplification of specific gene sequences. Appl. Environ. Microbiol. 57, 2283-2286.
78. Pillai, S.D., and Ricke, S.C. 1995. Strategies to accelerate the applicability of gene amplification protocols for pathogen detection in meat and meat products. Crit. Rev. Microbiol. 21, 239-261.
79. Ricke, S.C., Pillai, S.D., Norton, R. A., Maciorowski, K.G., and Jones, F.T. 1998. Applicability of rapid methods for detection of Salmonella spp. in poultry feeds: a review. J. Rapid Meth. Auto. Microbiol. 6, 239-258.
80. Ricke, S.C. and Pillai, S.D. 1999. Conventional and molecular methods for understanding probiotic bacteria functionality in gastrointestinal tracts. Crit. Rev. Microbiol. 25, 19-38.
81. Rose, B.E. 1998. Isolation and identification of Salmonella from meat, poultry, and egg products, in USDA/FSIS Microbiology Laboratory Guidebook. 3rd ed., 4.1-4.14. Washington, DC: Office of Public Health and Science, Microbial Division, U. S. Department of Agriculture.
82. Saulmon, E.E. 1966. Control of Salmonella contamination in eggs, feeds, and feed products. J. Appl. Vet. Med. Assoc. 149, 1691-1697.
83. Scheu, P., Gasch. A., Zschaler, R., Berghof, K., and Wilborn, F. 1998. Evaluation of a PCR-ELISA for food testing: detection of selected Salmonella serovars in confectionery products. Food Biotechnol. 12, 1-12.
84. Simpkins, S.A., Chan, A.B., Hays, J., Pöpping, B., and Cook, N. 2000. An RNA transcription-based amplification technique (NASBA) for the detection of viable Salmonella enterica. Lett. Appl. Microbiol. 30, 75-79.
85. Soumet, C., Ermel, G., Rose, N., Rose, V., Drouin, P., Salvat, G., and Colin, P. 1999. Evaluation of a multiplex PCR assay for simultaneous identification of Salmonella sp., Salmonella Enteritidis and Salmonella Typhimurium from environmental swabs of poultry houses. Lett. Appl. Microbiol. 28, 113-117.
86. Stone, G.G., Chengappa, M.M., Oberst, R.D., Gabbert, N.H., McVey, S., Hennessy. K.J., Muenzenberger, M., and Staats, J. 1993. Application of polymerase chain reaction for the correlation of Salmonella serovars recovered from greyhound feces with their diet. J. Vet. Diag. Invest. 5, 378-385.
87. Stone, G.G., Oberst, R.D., Hays, M.P., McVey, S., and Chengappa, M.M. 1994. Detection of Salmonella serovars from clinical samples by enrichment broth cultivation-PCR procedure. J. Clin. Microbiol. 32, 1742-1749.
88. Sulakvelidze, A., Kekelidze, M., Turabelidze, D., Taanava, S., Tevsadze, L., Devdariani, L., Gautom, R., Myers, R., Morris Jr., J.G., and Imnadze, P. 2000. Salmonellosis in the republic of Georgia: using molecular typing to identify the outbreak-causing strain. Emerg. Infect. Dis. 6, 70-73.
89. Swaminathan, B., and Feng, P. 1994. Rapid detection of food-borne pathogenic bacteria. Ann. Rev. Microbiol 48, 401-426.
90. Szabo, E.A., and Mackey, B.M. 1999. Detection of Salmonella enterinais by reverse transcription-polymerase chain reaction (PCR). Int. J. Food Microbiol. 51, 113-122.
91. Ten Bosch, C., Van der Plas, J., Havekes, M., Geurts, J., van der Palen, C., Huis in 'T Veld, J.H.J., and Hofstra, H. 1992. Salmonella PCR: implementation of a screening method in meat and meat products, in Reports and Communications: Salmonella and Salmonellosis. Saint-Brieuc, France: Ploufragan, 44-49.
92. Trkov, M.I., Majerikova, B., Jerašek, A., Štefanovič ová, A., Rijpens, N., and Kuchta, T. 1999. Detection of Salmonella in food over 30 h using enrichment and polymerase chain reaction. Food Microbiol. 16, 393-399.
93. Tu, S.-I., Uknalis, J., and Gehring, A. 1999. Detection of immunomagnetic bead captured Escherichia coli O157:H7 by light addressable potentiometric sensor. J. Rapid Meth. Auto. Microbiol. 7, 69-79.
94. van Kessel, J.S., Karns, J.S., and Perdue, M.L. 2003. Using a portable real-time PCR assay to detect Salmonella in raw milk. J. Food Prot. 66, 1762-1767.
95. Wan, J., King, K., Craven, H., McAuley, C., Tan, S.E., and Coventry, M.J. 2000. Probelia™ PCR system for rapid detection of Salmonella in milk powder and ricotta cheese. Lett. Appl. Microbiol. 30, 267-271.
96. Wang R.-F., Slavik, M.F., and Cao, W.-W. 1992. A rapid PCR method for direct detection of low numbers of Campylobacter jejuni. J. Rapid Meth. Auto. Microbiol. 1, 101-108.
97. Way, J.S., Josephson, K.L., Pillai, S.D., Abbaszadegan, M., Gerba, C.P, and Pepper, I.L. 1993. Specific detection of Salmonella spp. by multiplex polymerase chain reaction. Appl. Environ. Microbiol. 59, 1473-1479.
98. Williams, J. E. 1981a. Salmonellas in poultry feeds-a worldwide review. Part I: Introduction. World's Poult. Sci. J. 37, 6-19.
99. Williams, J.E. 1981b. Salmonellas in poultry feeds-a worldwide review. Part II: Methods in isolation and identification. World's Poult. Sci. J. 37, 19-25.
100. Williams, J.E. 1981c. Salmonellas in poultry feeds-a worldwide review. Part III: Methods in control and elimination. World's Poult. Sci. J. 37, 97-105.
101. Wintzingerode, F.V., Göbel, U.B., and Stackebrandt, E. 1997. Determination of microbial diversity in environmental samples: pitfalls of PCR-based rRNA analysis. FEMS Microbiol. Rev. 21, 213-229.
102. Wittwer, C.T., Herrman. M.G., Gundry, C.N., and Elenitoba-Johnson, K.S.J. 2001. Real-time multiplex PCR assays. Meth. 25, 430-442.
103. Wolcott, M.J. 1991. DNA-based rapid methods for the detection of foodborne pathogens. J. Food Prot. 54, 387-401.
104. Yamamoto, T., Morotomi, M., and Tanaka, R. 1992. Species-specific oligonucleotide probes for five Bifidobacterium species detected in human intestinal microflora. Appl. Environ. Microbiol. 58, 4076-4079.