Dr. Michelle Danyluk

Dr. Michelle Danyluk

Program Emphasis

Research focuses on microbial food safety and quality, emphasizing the microbiology of fruit juices, fresh fruits and vegetables and tree nuts. Extension Specialist for citrus processing issues - work with processors and packers to enhance quality, safety and value of processed citrus products.


Ph.D.  2006.  Food Science - Specialization Microbiology, University of California, Davis

M.S.  2002.  Food Microbiology - University of Georgia, Athens

B.Sc.  2000.  Biological Sciences - Specialization Microbiology, University of Alberta, Edmonton


Food Safety and Microbiology

Past Positions

Post Doctoral Researcher 2006.  University of California, Davis

Research Assistant 2002-2005.  University of California, Davis

Research Assistant 2000-2002.  University of Georgia

Refereed Papers

Fong, K., B. LaBossiere, A.I. Moreno Swift, P. Delaquis, L.D. Goodrich, R.C. Levesque, M.D. Danyluk, S. Tamber, and S. Wang. 2017. Characterization of four bacteriophages isolated from British Columbia, Canada for control of non-typhoidal Salmonella enterica in vitro and on sprouting alfalfa seeds. Frontiers in Microbiology. https://doi.org/10.3389/fmicb.2017.02193 .

Havelaar, A.H, K. Vazquez, Z. Topalcengiz, R. Munoz-Carpena, and M.D. Danyluk. 2017. Evaluating the U.S. FSMA Product Safety Rule standard for microbial quality of agricultural water for produce growing. Journal of Food Protection. Journal of Food Protection. 80:2832-1841.

Lambertini, E., J. Barouei, D.W. Schaffner, M.D. Danyluk, and L.J. Harris. 2017. Modeling the risk of salmonellosis from consumption of pistachios produced and consumed in the United States. Food Microbiology. 67:85-96.

Rheault, J-G.E., J. Jeukens. L. Freschi, I. Kukavica-Ibrulj, B. Boyle, M-J. Dupont, A. Colavecchio, V. Barrere, B. Cadieux, M. Kerhoas, A. Crouse, L. Zhu, L. Larivière, A.V. Pilar, C. Cavestri, T.K. Chapin, D. Tremblay, C. Vincent, E. Fournier, K. Youfsi, I. Ngueng-Feze, L. Song, V. Usongo, F. Doualla-Bell, C. Berry, A.R. Reimer, N. Kong, C.B. Huang, K. Fong, E.D. Wilson, K. Mukhopadhyay, W. Mottawea, D. Ogunremi, H. Huang, G. Arya, A. Perets, C. Yoshida, J. Robertson, J. Weadge, M.D. Danyluk, J. Rohde, R. Garduno, S. Wang, C. Nadon, P. Thomassin,Y. Joly, I. Fliss, G. Lapointe, L.J. Harris, R. Stephan, E. Burnett, S. Moineau, S. Tamber, S. Bekal, F. Daigle, S. Gruenheid, D. Malo, T. Wittum, P. Delaquis, A. Gill, K.E. Sanderson, M. Wiedmann, E. Franz, L. Wijnands, B.C. Weimer, L.D. Goodridge and R.C. Levesque. 2017. A Syst-OMICS Approach to Ensuring Food Safety and Reducing the Economic Burden of Salmonellosis. Frontiers in Microbiology. 8:996. Doi: 10.3389/fmicb.2017.00996

Jung, J., L.M. Friedrich, M.D. Danyluk and D.W. Schaffner. 2017. Quantification of transfer of Salmonella from oranges to peel, edible portion, and gloved hands during peeling. Journal of Food Protection. 80:933-939

Topalcentiz, Z., L.K. Strawn, and M.D. Danyluk. 2017. Microbial quality of agricultural water in Central Florida. PLoS One. 12(4): e0174889. https://doi.org/10.1371/journal.pone.0174889

Jensen, D.A., M.D. Danyluk, L.J. Harris, and D.W. Schaffner. 2017. Quantifying bacterial cross contamination rates between fresh-cut produce and hands. Journal of Food Protection. 80:213-219.

Schneider, K.R., J. De, Y. Li, A. Sreedharan, R. Goodrich Schneider, M.D. Danyluk, D. Phal, C. Walsh, J. Todd-Searle, D.W. Schaffner, W. Kline, and R.L. Buchanan. 2017. Microbial evaluation of pre- and post-processed tomatoes from Florida, New Jersey, and Maryland Packinghouses. Food Control. 73:511-517.

Topalcentiz, Z., and M.D. Danyluk. 2017. Thermal inactivation responses of acid adapted and non-adapted stationary phase Shiga toxin-producing Escherichia coli (STEC), Salmonella spp. and Listeria monocytogenes in orange juice. Food Control. 72:73-82.

de Moraes, M.H., T.K. Chapin, A. Ginn, A.C. Wright, K. Parker, C. Hoffman, D.W. Pascual, M.D. Danyluk, and M. Teplitski. 2016. Development of an avirulent Salmonella surrogate for modeling pathogen behavior in crop production environments. Applied and Environmental Microbiology. 82:4100-4111.

Turner, A.N., L.M. Friedrich, and M.D. Danyluk. 2016. Influence of temperature differential between tomatoes and postharvest water on Salmonella internalization. Journal of Food Protection. Journal of Food Protection. 79:922-928.

Brar, P.K., L.K. Strawn, and M.D. Danyluk. 2016. Prevalence, concentration, and types of Salmonella isolated from North American inshell pecans over four harvest years. Journal of Food Protection. 79:352-360.

Luo, Z.Y., G.Y. Gu, A. Ginn, M.C. Giurcanu, P. Adams, G. Vellidis, A.H.C van Bruggen, M.D. Danyluk, A.C. Wright. 2015. Distribution and characterization of Salmonella enterica isolates from irrigation ponds in the Southeastern United States. Applied and Environmental Microbiology. 81: 4376-7387.

Jensen, D.A., M.D. Danyluk, L.J. Harris, and D.W. Schaffner. 2015. Quantifying the effect of handwash duration, soap use and drying methods on the removal of Enterobacter aerogenes on hands. Journal of Food Protection,78:685-690.

Brar, P.K., L.G. Proano, L.M. Friedrich, L.J. Harris and M.D. Danyluk. 2015. Survival of Salmonella, Escherichia coli O157:H7, and Listeria mo

McEgan, R., and M.D. Danyluk. 2015. Evaluation of aqueous and alcohol-based quaternary ammonium sanitizers for inactivating Salmonella spp., Escherichia coli O157:H7, and Listeria monocytogenes on peanut and pistachio shells. Food Microbiology, 47:93-98.

Jensen, D.A., L.M. Friedrich, L.J. Harris, M.D. Danyluk, and D.W. Schaffner. 2015. Cross-contamination of Escherichia coli O157:H7 between lettuce and wash water during home-scale washing. Food Microbiology, 46:428-433.

Liberman, V.M., I.Y. Zhao, D.W. Schaffner, M.D. Danyluk, and L.J. Harris. 2015. Survival or growth of inoculated Escherichia coli O157:H7 and Salmonella on yellow onions (Allium cepa) under conditions simulating food service and consumer handling and storage. Journal of Food Protection, 78:42-50.

McEgan, R., J.C. Chandler, L.D. Goodridge, and M.D. Danyluk. 2014. Diversity of Salmonella isolated from Central Florida surface waters. Applied and Environmental Microbiology, 80:6819-6827.

Bisha, B., J.A. Adkins, J.C. Jokerst, J.C. Chandler, A. Perez-Mendez, S.M. Coleman, A.O. Sbodio, T.V. Suslow, M.D. Danyluk, C.S. Henry, and L.D. Goodridge. 2014. Colorimetric paper-based detection of Escherichia coli, Salmonella spp., and Listeria monocytogenes from large volumes of agricultural water. Journal of Visualized Experiments. Jun 9;(88). doi: 10.3791/51414.

Sreedharan, A., K.R. Schneider, and M.D. Danyluk. 2014. Salmonella transfer potential onto tomatoes during laboratory-simulated in-field debris removal. Journal of Food Protection. 77:1062-1068.

Nguyen, T.P., L.M. Friedrich and M.D. Danyluk. 2014. Fate of Escherichia coli O157:H7 and Salmonella spp. on whole strawberries and blueberries of two maturities under different storage conditions. Journal of Food Protection. Journal of Food Protection. 77:1093-1101.

Strawn, L.K., M.D. Danyluk, R.W. Worobo, M. Wiedmann. 2014. Distribution of Salmonella subtypes differs between two US produce growing regions. Applied and Environmental Microbiology. 80:3982-3991.

Danyluk, M.D., L.M. Friedrich and D.W. Schaffner. 2014. Modeling the growth of Listeria monocytogenes on cut cantaloupe, honeydew and watermelon. Food Microbiology. 38:52-55.

Jensen, D.A., L.M. Friedrich, M.D. Danyluk, L.J. Harris, and D.W. Schaffner. 2013. Quantifying transfer rates of Salmonella and Escherichia coli O157:H7 between fresh-cut produce and common kitchen surfaces. Journal of Food Protection. 76:1530-1538.

Brar, P.K., and M.D. Danyluk. 2013. Salmonella transfer potential during hand harvesting of tomatoes under laboratory conditions. Journal of Food Protection. 76:1342-1349.

Danyluk, M.D., L.M. Friedrich, P. Sood, and E. Etxeberria. 2013. Growth or penetration of Salmonella into Citrus fruit is not facilitated by natural-light labels. Food Control. 34:398-403.

McEgan, R., G.K. Mootian, L.D. Goodridge, D.W. Schaffner, and M.D. Danyluk. 2013. Predicting Salmonella populations from biological, chemical and physical indicators in Florida surface waters. Applied and Environmental Microbiology. 79: 4094-4105.

Li, D., L.M. Friedrich, M.D. Danyluk, L.J. Harris, and D.W. Schaffner. 2013. Development and validation of a mathematical model for growth of pathogens in cut melons. Journal of Food Protection. 76: 953-958.

Vandamm, J.P., D. Li, L.J. Harris, D.W. Schaffner and M.D. Danyluk. 2013. Fate of Escherichia coli O157:H7, Listeria monocytogenes, and Salmonella on fresh-cut celery. Food Microbiology. 34:151-157.

Schaffner, D.W., R.L. Buchanan, S. Calhoun, M.D. Danyluk, L.J. Harris, D. Djordjevic, R.C. Whiting, B. Kottapalli, M. Wiedmann. 2013. Issues to consider when setting intervention targets with limited data for low-moisture food commodities: A peanut case study. Journal of Food Protection. Journal of Food Protection. 76: 360-369.

McEgan, R., C.A.P. Rodrigues, A. Sbodio, T.V. Suslow, L.D. Goodridge, and M.D. Danyluk. 2013. Detection of Salmonella spp. from large volumes of water by Modified Moore Swabs and Tangential Flow Filtration. Letters in Applied Microbiology. 56:88-94.

Harris, L.J., J. Bender, E. Bihn, T. Blessington, M.D. Danyluk, P, Delaquis, L.D. Goodridge, A. Ibekwe, S. Ilic, K. Kniel, J. Lejeune, D.W. Schaffner, D. Stoeckel, and T.V. Suslow.  2012.  Framework for developing research protocols: Evaluating microbial hazards and controls during production that pertain to the quality of agricultural water contacting fresh produce that may be consumed raw.  Journal of Food Protection.  75:2251-2273.

Cevallos-Cevallos, J.M., G. Gu, M.D. Danyluk, and A.H.C. van Bruggen.  2012.  Adhesion and splash dispersal of Salmonella enterica Typhimurium on tomato leaflets: effect of rdar morphotype and trichome density.  International Journal of Food Microbiology.  160:58-64.

Cevallos-Cevallos, J.M., G. Gu, M.D. Danyluk, N.S. Dufault, A.H.C. van Bruggen.  2012. Salmonella can reach tomato fruits on plants exposed to aerosols formed by rain.  International Journal of Food Microbiology.  158:140-146.

Cevallos-Cevallos, J.M., E.D. Akins, L,M. Friedrich, M.D. Danyluk, and A.H. Simonne.  2012.  Growth of Clostridium perfringens in refried beans.  Journal of Food Protection. 75:1783-1790.

Kimber, M., H. Kaur, L. Wang, M.D. Danyluk, and L.J. Harris.  2012.  Survival of Salmonella, Escherichia coli O157:H7, and Listeria monocytogenes on inoculated almonds and pistachios stored at -19, 4, and 24°C.  Journal of Food Protection.  75:1394-1403.

Cevallos-Cevallos, J.M., M.D. Danyluk, G. Gu, G.E. Vallad, A.H.C. van Bruggen.  2012. Dispersal of Salmonella by rain splash onto tomato plants.  Journal of Food Protection.  75:472-479.

Teplitski, M., J.T. Noel, A. Alagely, and M.D. Danyluk.  2012.  Functional genomics studies shed light on the nutrition and gene expression of non-typhoidal Salmonella and enterovirulent E. coli in produce.  Food Research International.  45:576-586.

Lambertini, E., M.D. Danyluk, D.W. Schaffner, C.K. Winter, and L.J. Harris.  2012.  Risk of salmonellosis from consumption of almonds in the North American Market.  Food Research International.  45:1166-1174.

Bisha,B., A. Perez-Mendez, M.D. Danyluk, L.D. Goodridge.  2011.  Evaluation of modified Moore swabs and continuous flow centrifugation for concentration of Salmonella spp. and Escherichia coli O157:H7 from large volumes of water.  Journal of Food Protection.  74:1934-1937.

Perez-Cacho, P.R., M.D. Danyluk, and R. Rouseff.  2011.  GC-MS quantification and sensory thresholds of guaiacol in orange juice and the relationship between guaiacol and Alicyclobacillus.  Food Chemistry.  129:45-50

Cevallos-Cevallos, J.M., M.D. Danyluk, J. I. Reyes-De-Corcuera.  2011.  GC-MS Based Metabolomics for rapid detection of Escherichia coli O157:H7 and Salmonella Typhimurium, Salmonella Muenchen and Salmonlla Hartford in beef and chicken.  Journal of Food Science.  76: M238-M246.

Danyluk, M.D., and D.W. Schaffner.  2011.  Quantitative microbial assessment for E. coli O157:H7 in leafy greens from farm to consumption using published data.  Journal of Food Protection.  74:700-708.

Danyluk, M.D., L.M. Friedrich, C. Bousquet, R.M. Goodrich-Schneider, M.E. Parish, and R. Rouseff.  2011.  Prevalence, Amounts, Spoilage, and Mitigation of Alicyclobacillus spp. in Tropical and Subtropical Fruit Concentrates.  Food Microbiology.  28:472-477.

Strawn, L.K., K.R. Schneider, and M.D. Danyluk.  2011.  Microbiological Safety of Tropical Fruits.  Critical Reviews in Food Science and Nutrition.  51:132-145.

Danyluk. M.D., L.M. Friedrich, L.O. Interiano Villeda, K.R. Schneider, and E.J. Etxeberria.  2010.  Natural-Light Labeling of Tomato does not Facilitate Growth or Penetration of Salmonella into the Fruit.  Journal of Food Protection.  73:2276-2280.

Bansal, A., T. Jones, S. Abd, M.D. Danyluk, and L.J. Harris.  2010.  Most Probable Number Determination of Salmonella Levels in Naturally-Contaminated Raw Almonds Using Two Sample Preparation Methods.  Journal of Food Protection.  73:1986-1998

Durak, M.Z., J.J. Churey, M.D. Danyluk, R.W. Worobo.  2010.  Identification and Haplotype Distribution of Alicyclobacillus spp. from Different Juices and Beverages.  International Journal of Food Microbiology.  142:286-291.

Spann, T.M. and Danyluk, M.D.  2010.  Mechanical harvesting increases leaf and stem debris in loads of mechanically harvested citrus fruit.  HortScience.  45:1297-1300.

Dagulo, L., M.D. Danyluk, T.M. Spann, F.M. Valima, R.M Goodrich-Schneider, C.S Sims, and R. Rouseff.  2010.  Chemical characterization of orange juice from trees infected with citrus greening (Huanglongbing).  Journal of Food Science. 75: C199-C207.

Strawn, L.K. and M.D. Danyluk.  2010.  Fate of Escherichia coli O157:H7 and Salmonella spp. on Fresh and Frozen Cut Pineapples.  Journal of Food Protection. 73:418-424.

Strawn, L.K. and M.D. Danyluk.  2010.  Fate of Escherichia coli O157:H7 and Salmonella spp. on Fresh and Frozen Cut Mangoes and Papayas.  International Journal Food Microbiology. 138:78-84.

Du, W.-X., M.D. Danyluk, and L.J. Harris.  2010.  Efficacy of aqueous and alcohol-based quaternary ammonium sanitizers for reducing Salmonella in dusts generated in almond hulling and shelling facilities.  Journal of Food Science.  75:M7-M13.

Cevalos-Cevallos, J.M., J.I. Reyes-De-Corcuera, E. Exteberria, M.D. Danyluk, and G.E. Rodrick.  2009.  The process of metabolomics analysis in food science.  Trends Food Science  20:557-599.

Friedrich, L.M., R. Goodrich-Schneider, M.E. Parish, and M.D. Danyluk.  2009.  Mitigation of Alicyclobacillus spp. spores on food contact surfaces with aqueous chlorine dioxide and hypochlorite. Food Microbiology.  26:936-941.

Wright, A.C., M.D. Danyluk and W.S. Otwell.  2009.  Pathogens in raw foods: what the salad bar can learn from the raw bar.  Current Opinions in Biotechnology.  20:172-177.

Amaratunga, K.S.P., M. D. Danyluk, L.J. Harris, and R.P. Singh.  2008.  Effectiveness of Electrolyzed Water in Clean In Place Applications for Systems Fouled with Apple Juice.  J.Food Manufacturing Efficiency.  2:15-22

Danyluk, M.D., M. Nozawa-Inoue, K.R. Hristova, K.M. Scow, B. Lampinen and L.J. Harris.  2008.  Survival and growth of Salmonella Enteritidis PT 30 in almond orchard soils.  Journal of Applied Microbiology.  104: 1391-1399.

Danyluk, M.D., M.T. Brandl, and L.J. Harris.  2008.  Migration of Salmonella Enteritidis PT 30 through almond hulls and shells.  Journal of Food Protection.  71:397-401.

Du, W.-X., M.D. Danyluk, and L.J. Harris.  2007.  Evaluation of cleaning treatments for almond-contact surfaces in hulling and shelling facilities.  Trends Food Prot. 27: 678-683.

Uesugi, A.R., M.D. Danyluk, R.E. Mandrell, and L.J. Harris.  2007.  Isolation of Salmonella Enteritidis PT 30 from a single almond orchard over a 6-year period.  Journal of Food Protection. 70: 1784-1789. 

Danyluk, M.D., T. Zhao, M.P. Doyle.  2007.  Competitive inhibition bacteria of bovine origin against Salmonella serovars.  J. Food Prot.  70: 1804-1810.

Danyluk, M.D., T.M. Jones, S.J. Abd, F. Schlitt-Dittrich, M. Jacobs, and L.J. Harris.  2007.  Prevalence and amounts of Salmonella found on raw California almonds.  Journal of Food Protection.  70:820-827.

Uesugi, A.R., M.D. Danyluk, and L. J. Harris. 2006.  Survival of Salmonella Enteritidis PT 30 at -20, 4, 23 and 37ºC.  Journal of Food Protection. 69:1851-1857.

Danyluk, M.D., L.J. Harris, and D.W. Schaffner. 2006.  Monte Carlo simulations assessing the risk of salmonellosis from consumption of almonds.  Journal of Food Protection. 69:1594-1599.

Siragusa, G.R., M.D. Danyluk, K. Hiett, M.G. Wise, and S.E. Craven.  2006.  Molecular subtyping of poultry-associated Clostridium perfringens isolates by rep-PCR.  Journal of Clinical Microbiology. 44:1065-1073.

Danyluk, M.D., A.R. Uesugi, and L.J. Harris.  2005.  Survival of Salmonella Entertidis PT 30 on inoculated almonds after commercial fumigation with propylene oxide.  Journal of Food Protection. 68:1613-1622.

Extension Publications

Richardson, S., R. Goodrich Schneider, M.A. Ritenour, M.D. Danyluk, K.R. Schneider. The Food Safety Modernization Act and the FDA Facility Registration Program.  EDIS Publication FSHN 13-07 http://edis.ifas.ufl.edu/fs231

Goodrich-Schneider, R.M., K.R. Schneider, M.E. Parish, M.D. Danyluk.  Juice HACCP: an overview.  EDIS Publication FSHN 05-15 http://edis.ifas.ufl.edu/fs124

Nguyen, T.P., M.D. Danyluk, K.R. Schneider.  Growth and survival of bacteria on melon varieties.  EDIS Publication FSHN 12-07 http://edis.ifas.ufl.edu/fs191 

Goodrich-Schneider, R.M., K.R. Schneider, M.D. Danyluk, R.H. Schmidt.  HACCP: an overview.  EDIS Publication FSHN 05-12 http://edis.ifas.ufl.edu/fs122 

Valadez, A.M., K.R. Schneider, M.D. Danyluk.  2012.  Growth, reduction and survival of bacteria on tomatoes.  EDIS Publication FSHN 12-06 http://edis.ifas.ufl.edu/fs190

Valadez, A.M., K.R. Schneider, M.D. Danyluk.  2012. Outbreaks of foodborne disease associated with tomatoes.  EDIS Publication FSHN 12-08 http://edis.ifas.ufl.edu/fs192

Danyluk, M.D., R.M. Goodrich-Schneider, K.R. Schneider, L.J. Harris, R.W. Worobo.  2012. Outbreaks of foodborne disease associated with fruit and vegetable juices, 1922-2010.  EDIS Publication FSHN12-04 http://edis.ifas.ufl.edu/pdffiles/FS/FS18800.pdf

Danyluk, M.D., R.M. Goodrich-Schneider, K.R. Schneider, M.A. Ritenour, T.M. Spann.  2012.  GAPs for the Florida citrus grower: understanding the principles of good agricultural practices.  EDIS Publication FSHN12-03 http://edis.ifas.ufl.edu/pdffiles/FS/FS18700.pdf

Danyluk, M.D., T.M. Spann, R. Rouseff, R.M. Goodrich-Schneider, C. Sims.  2011.  The effects of Huanglongbing on Florida oranges.  EDIS Publication FSHN11-08/FS169 http://edis.ifas.ufl.edu/pdffiles/FS/FS16900.pdf

Spann, T.M., R.A. Atwood, M.M. Dewdney, R.C. Ebel, R. Ehsani, G. England, S.H. Futch, T. Gaver, T. Hurner, C. Oswalt, M.E. Rogers, F.M. Roka, M.A. Ritenour, M. Zekri, B.J. Boman, K.R. Chung, M.D. Danyluk, R. Goodrich-Schneider, K.T. Morgan, R.A. Morris, R.P. Muraro, P. Roberts, R.E. Rouse, A.W. Schumann, P.A. Stansly, L.L. Stelinski.  2010.  IFAS guidance for Huanglongbing (greening) management.  EDIS Publication HS1165 http://edis.ifas.ufl.edu/pdffiles/HS/HS116500.pdf

Teplitski, M., K. Schneider, M.D. Danyluk.  2008.  Salmonella and tomatoes: Q&A for consumers.  EDIS Publication SL263 http://edis.ifas.ufl.edu/pdffiles/SS/SS48400.pdf

Teplitski, M., K. Schneider, M.D. Danyluk, Claudio Gonzalez.  2008.  Salmonella y tomatoes: preguntas y respuestas para los consumidores.  EDIS Publication SL263SP  http://edis.ifas.ufl.edu/pdffiles/SS/SS48600.pdf