University of Minnesota
Department of Food Science and Nutrition
http://fscn.cfans.umn.edu
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Department of Food Science and Nutrition

Francisco Diez-Gonzalez

FSCN-People-Francisco_Diez Ph.D., Professor
Department of Food Science and Nutrition
258 ABLMS
Phone: (612) 624-9756
Fax: (612) 625-5272
fdiez@umn.edu
Complete publication list

Abbreviated Bio

Dr. Francisco Diez-Gonzalez is a Professor of Food Safety Microbiology in the Department of Food Science and Nutrition at the University of Minnesota. His research program is focused on study and control of food-borne pathogens. He teaches courses on food safety and food microbiology. Dr. Diez earned his B.S. in Food Technology, from the Instituto Tecnológico y de Estudios Superiores de Monterrey in Queretaro, Mexico. He received his M.S. and Ph.D. degrees in Food Science from Cornell University. Before joining the University of Minnesota in 1999, Dr. Diez was a Postdoctoral Research Associate in Microbiology at Cornell University. Dr. Diez has authored more than 70 peer-review articles and 10 book chapters. He serves in the editorial board of Applied and Environmental Microbiology, Journal of Food Protection, Food Analytical Methods, and Food Protection Trends. He has been a panel member of six different USDA’s CSREES or NIFA grant programs.

Research

1) Pre-harvest ecology of foodborne pathogens
2) Safety of fresh fruits and vegetables
3) Safety of organic foods
4) Safety of dairy foods
5) Control of select agents for food defense
6) Salmonella in low water activity foods
7) Food service Hispanic workers education
8) Emerging foodborne pathogens

Collaborations

Within FScN: Ted Labuza on Food Defense projects and with Joellen Feirtag on Development of Organic Sanitizers.

Within the U of M: Jeff Bender, College of Vet. Medicine; Craig Hedberg, School of Public Health; Mike Sadowsky, Soil Water and Climate; Cindy Tong, Horticultural Sciences; Michelle Schermann, Bioproducts and Biosystems Engineering; Alfredo DiCostanzo, Animal Science.

Outside collaborations: Todd Callaway, USDA/ARS; Andrew Brabban and Elizabeth Cutter, Evergreen State University; Kumar Venkitanarayanan.

Resident and Outreach Teaching

Selected Scholarship 


Hou, Z., R. C. Fink, M. Sugawara, F. Diez-Gonzalez, and M. J. Sadowsky. 2013. Transcriptional and functional responses of Escherichia coli O157:H7 growing in the lettuce rhizoplane. Food Microbiol. 35:136-142.

Fink R.C., J. M. Popowski J. E. Anderson, J. L. Dahlberg, S. Kalyanikutty, G. I. Crawford, A. Dicostanzo, R. B. Cox, and F. Diez-Gonzalez. 2013. Impact of management practices and distillers' grains feeding on the prevalence of Escherichia coli O157 in feedlot cattle in Minnesota. Foodborne Pathog Dis. 10:559-565.

Hou, Z, R. C. Fink, C. Radtke, M. J. Sadowsky, and F. Diez-Gonzalez. 2013. Incidence of naturally internalized bacteria in lettuce leaves. Int. J. Food Microbiol. 162:260-265.

Hou, Z., R. C. Fink, E. P. Black, M. Sugawara, Z. Zhang, F. Diez-Gonzalez and M. J. Sadowsky. 2012. Gene expression profiling of Escherichia coli in response to interactions with the lettuce rhizosphere. J. Appl. Microbiol. 113, 1076-1086.

Lumor, S. E., N. R. Fredrickson, I. Ronningen, B. D. Deen, K. Smith, F. Diez-Gonzalez, T. P. Labuza. 2012. Comparison of the presence of Shiga toxin 1 in food matrices as determined by an enzyme-linked immunosorbent assay and a biological activity assay. J. Food Prot. 75: 1036-1042.

Fink, R. C., E. Black, Z. Hou, M. Sugawara, M. J. Sadowsky, and F. Diez-Gonzalez. 2012. Transcriptional responses of Escherichia coli K12 and O157:H7 in association with lettuce leaves. Appl. Environ. Microbiol. 78: 1752-1764.

Viazis, S., and F. Diez-Gonzalez. 2011. Enterohemorrhagic Escherichia coli: The 20th. century’s emerging foodborne pathogen. A Review. Adv. Agron. 111: 1-50.

Viazis, S., M. Akhtar, A. Brabban, J. Feirtag, and F. Diez-Gonzalez. 2011. Isolation and host range characterization of lytic bacteriophages against enterohemorrhagic Escherichia coli. J. Appl. Microbiol. 110:1323-1331.

He, L., T. Rodda, C. Haynes, T. Deschaines, T. Strother, F. Diez-Gonzalez, and T. P. Labuza. 2011. Detection of a foreign protein in milk using surface-enhanced Raman spectroscopy coupled with antibody-modified silver dendrites. Anal. Chem. 83: 1510–1513.

Lumor, S. E., F. Diez-Gonzalez, and T. P. Labuza. 2011. Detection of warfare agents in liquid foods using brine shrimp lethality assay. J. Food Sci. 76: T16-T19.

Viazis, S., M. Akhtar, J. Feirtag, and F. Diez-Gonzalez. 2011. Reduction of Escherichia coli O157:H7 viability on leafy green vegetables by treatment with a bacteriophage mixture and trans-cinnamaldehyde. Food Microbiol. 28: 149-157.

Leishman, O., M. Johnson, T. P. Labuza, and F. Diez-Gonzalez. 2010. Survival of Bacillus anthracis spores in fruit juices and wine. J. Food Prot. 73: 1694–1697.

Cho, S., F. Diez-Gonzalez, C. P. Fossler, S. J. Wells, C. W. Hedberg, J. B. Kaneene, P. L. Ruegg, L. D. Warnick, and J. B. Bender. 2009. Cattle-level risk factors associated with STEC on dairy farms in Minnesota. Can. J. Vet. Res. 73: 151-156.

Hilgren, J., K. M. J. Swanson, F. Diez-Gonzalez, and B. Cords. 2009. Susceptibilities of Bacillus subtilis, B. cereus and B. anthracis spores to liquid biocides. J. Food Prot. 72: 360-364.

Hilgren, J., K. M. J. Swanson, F. Diez-Gonzalez, and B. Cords. 2009. Inactivations of Yersinia pseudotuberculosis, as a surrogate for Y. pestis, by liquid biocides in the presence of food residue. J. Food Prot. 72: 392-398.

DiLorenzo, N., C. R. Dahlen, F. Diez-Gonzalez, G. C. Lambs, J. E. Larson, and A. DiCostanzo. 2008. Effects of feeding polyclonal antibody preperations on rumen fermentation patterns, performance and carcass characteristics of feedlot steers. J. Ani. Sci. 86: 3023-2032.

Pal, A., T. P. Labuza, and F. Diez-Gonzalez. 2008. Evaluating the growth of Listeria monosytogenes in refrigerated ready-to-eat frankfurters - Influence of strain temperature, packaging, lactate and diacetate, and background microflora. J. Food Prot. 71: 1806-1816.

Pal, A., T. P. Labuza, and F. Diez-Gonzalez. 2008. Shelf life evaluation for ready-to-eat sliced uncured turkey breast and cured ham under probable storage conditions based on Listeria monocytogenes and psychrotroph growth. Int. J. Food Microbiol. 126:49-56.

Xu, S., T. P. Labuza, and F. Diez-Gonzalez. 2008. Inactivation of Bacillus anthracis spores in milk by a combination of biocides and heating at high-temperature short-time (HTST) pasteurization temperatures. Appl. Environ. Microbiol. 74: 3336-3341.

Diez-Gonzalez, F. 2007. Use of probiotics for livestock. Curr. Issues. Int. Microbiol. 8:15-24.

Hilgren, J., K. M. J. Swanson, F. Diez-Gonzalez, and B. Cords. 2007. Inactivation of Bacillus anthracis spores by liquid biocides in the presence of food residue. Appl. Environ. Microbiol. 73: 6370-6377.

Cho, S., J. B. Bender, F. Diez-Gonzalez, C. P. Fossler, C. W. Hedberg, J. B. Kaneene, P. L. Ruegg, L. D. Warnick, and S. J. Wells. 2006. Prevalence and characterization of Escherichia coli O157 isolates from Minnesota dairy farms and county fairs. J. Food Prot. 69:252-259.

Mukherjee, A., D. Speh, A. T. Jones, K. M. Buesing, L. T. L. Xiong, and F. Diez-Gonzalez. 2006. Longitudinal microbiological survey of fresh produce grown by farmers in the Upper Midwest. J. Food Prot. 69:1928-1936.

Xu, Sa., T. P. Labuza, and F. Diez-Gonzalez. 2006. Thermal inactivation of Bacillus anthracis spores in milk. Appl. Environ. Microbiol. 72:4479-4483.

Diez-Gonzalez, F. and Y. Karaibrahimoglu. 2004. Comparison of the glutamate-, arginine- and lysine-dependent acid resistance systems in Escherichia coli O157:H7. J. Appl. Microbiol. 96:1237-1244.

Mukherjee, A., D. Speh, E. A. Dyck, and F. Diez-Gonzalez. 2004. Pre-harvest evaluation of coliforms, Escherichia coli, Salmonella and E. coli O157:H7 in organic and conventional produce grown by Minnesota farmers. J. Food Prot. 67:894-900.

Schamberger, G. P., R. L. Phillips, J. L. Jacobs, and F. Diez-Gonzalez. 2004. Reduction of Escherichia coli O157:H7 in cattle by feeding colicin E7-producing E. coli. Appl. Environ. Microbiol. 70:6053-6060.

Leadership/Service

Awards

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