1109 Experiment St. - Melton Building - Griffin, GA 30223 USA - PH (770) 228-7284 - FAX (770) 229-3216
Dr. Larry Beuchat
Distinguished Research Professor

Center for Food Safety
Dept. Food Science & Technology
University of Georgia
Griffin, GA 30223-1797
Office Phone: (770) 412-4740
E-Mail: lbeuchat@uga.edu

Overview of Research Program
Dr. Beuchat's research is in the area of food microbiology.
Pathogenic bacteria under study include Salmonella, Escherichia coli O157:H7 and Listeria monocytogenes. Processes and technologies to eliminate or control the growth of these pathogens in foods are being developed and evaluated.
Growth, survival, death of and toxin production by pathogens in foods as influenced by thermal treatment, pH, acidity, chemical preservatives, water activity and modified atmosphere are being studied.
Research is also being done to develop a selective medium for preservative-resistant yeasts.
New and conventional procedures for killing heat-resistant ascospores of molds in acid foods are being evaluated.
 
Publications
 
Books

Doyle, M. P., L. R. Beuchat and T. J. Montville (ed). 2001.Food Microbiology: Fundamentals and Frontiers, 2nd edition. Am. Soc. Microbiol., Washington, D.C. 872 pp.

Beuchat, L. R. 2001. Traditional fermented foods. In: Food Microbiology: Fundamentals and Frontiers, 2nd edition. (M. P. Doyle, L. R. Beuchat and T. J. Montville, ed.) Am. Soc. Microbiology, Washington, D.C. pp. 701-719.

Deak, T. and L. R. Beuchat. 1996. Handbook of Food Spoilage Yeasts. CRC Press, Inc., Boca Raton, FL. 210 pp.

Refereed publications (2008-present)

Choi, S., H. Jun, J. Bang, S.H. Chung, Y. Kim, B.S. Kim, H. Kim, L.R. Beuchat, and J.H. Ryu. 2015. Behaviour of Aspergillus flavus and Fusarium graminearum on rice as affected by degree of milling, temperature, and relative humidity during storage. Food Microbiol. 46:307-313.

Park, S., S. Choi, H. Kim, Y. Kim, B.S. Kim, L.R. Beuchat, and J.H. Ryu. 2015. Fate of mesophilic aerobic bacteria and Salmonella enterica on the surface of eggs as affected by chicken feces, storage temperature, and relative humidity. Food Microbiol. 48:200-205.

Bang, J., A. Hong, H. Kim, L.R. Beuchat, M.S. Rhee, Y. Kim, and J.-H. Ryu. 2014. Inactivation of Escherichia coli O157:H7 in biofilm on food-contact surfaces by sequential treatments of aqueous chlorine dioxide and drying.  Int. J. Food Microbiol. 191:129-134.

Beuchat, L.R. and D.A. Mann. 2014. Survival of Salmonella on dried fruits and in aqueous dried fruit homogenates as affected by temperature. J. Food Prot. 77:1102-1109.

Choi, S., H. Jun, J. Bang, S.-H. Chung, Y. Kim, B.-s. Kim, H. Kim, L.R. Beuchat, and J.-H. Ryu. 2014. Behaviour of Aspergillus flavus and Fusarium graminearum on rice as affected by degree of milling, temperature, and relative humidity during storage. Food Microbiol. 46:307-313.

Choi, S., H. Kim, Y. Kim, B.S. Kim, L.R. Beuchat, and J.H. Ryu. 2014. Fate of Bacillus cereus and naturally occurring microbiota on milled rice as affected by temperature and relative humidity.  Food Microbiol. 38:122-127.

Kim, B., Y. Bang, N. Kim, Y. Kim, B.-S. Kim, L.R. Beuchat, and J.-H. Ryu. 2014. Bacillus cereus and Bacillus thuringiensis spores in Korean rice: Prevalence and toxin production as affected by production area and degree of milling. Food Microbiol. 42:89-94.

Nam, H., H.-S. Seo, J. Bang, H. Kim, L.R. Beuchat, and J.-H. Ryu. 2014. Efficacy of gaseous chlorine dioxide in inactivating Bacillus cereus spores attached to and in a biofilm on stainless steel. Int. J. Food Microbiol. 188:122-127.

Ryu, J.-H., M. Kim, E.-G. Kim. L.R. Beuchat, and H. Kim. 2014. Comparison of the microbiological quality of environmentally friendly and conventionally grown vegetables sold at retail markets in Korea.  J. Food Sci. 79:M1739-M1744.

Bang, J., L. R. Beuchat, M. Gu, H.-I. Chang, and J.-H. Ryu.  2013.  Development of a random genomic DNA microarray for the detection and identification of Listeria monocytogenes in milk.  Int. J. Food Microbiol. 161:134-141.

Beuchat, L. R., D. A. Mann, and W. Q. Alali.  2013. Efficacy of sanitizers in reducing Salmonella on pecan nutmeats during cracking and shelling.  J. Food Prot.  76:770-778.

Beuchat, L.R., E. Komitopoulou , H. Beckers, R.P. Betts, F. Bourdichon, S. Fanning, H.M. Joosten, and B.H. Ter Kuile. 2013. Low-water activity foods: Increased concern as vehicles of foodborne pathogens.  J. Food Prot. 76:150-172.

Erickson, M.C., J. Liao, A.S. Payton, C.C. Webb, L. Ma, G. Zhang, I. Flitcroft, M.P. Doyle, and L.R. Beuchat. 2013. Fate of Escherichia coli O157:H7 and Salmonella in soil and lettuce roots as affected by potential home gardening practices. J. Sci. Food Agric. 93:3841-3849.

Gomez-Lopez, V.M., A. Marin, A. Allende, L.R. Beuchat, and M.I. Gil. 2013. Postharvest handling conditions affect internalization of Salmonella in baby spinach during washing. J. Food Prot. 76:1145-1151.

Jun, H., J. Kim, J. Bang, H. Kim, L. R. Beuchat, and J.-H. Ryu.  2013.  Combined effects of plant extracts in inhibiting the growth of Bacillus cereus in reconstituted infant rice cereal.  Int. J. Food Microbiol. 160:260-266.

Kim, S., J. Bang, H. Kim, L.R. Beuchat, and J.-H. Ryu.  2013.  Inactivation of Escherichia coli O157:H7 on stainless steel upon exposure to Paenibacillus polymyxa biofilms.  Int. J. Food Microbiol.  167:328-336.

Beuchat, L.R., D.A. Mann, and W.Q. Alali. 2012. Evaluation of sanitizers for inactivating Salmonella on in-shell pecans and pecan nutmeats.  J. Food Prot. 75:1930-1938.

Alali, W.Q., D.A. Mann, and L.R. Beuchat. 2012. Viability of Salmonella and Listeria monocytogenes in delicatessen salads and hummus as affected by sodium content and storage temperature.  J. Food Prot. 75:1043-1056.

Brooks, J.T., B.T. Matyas, J. Fontana, M.A. DeGroot, L.R. Beuchat, M. Hoekstra, and C.R. Friedman. 2012. An outbreak of Salmonella serotype Typhimurium infections with an unusually long incubation period.  Foodborne Path. Dis. 9:245-248.

Kim, J., J. Bang, L.R. Beuchat, H. Kim, and J.-H. Ryu. 2012. Controlled fermentation of kimchi using naturally occurring antimicrobial agents.  Food Microbiol. 32:20-31.

Kim, H., H. Kim, J. Bang, Y. Kim, L.R. Beuchat, and J.-H. Ryu. 2012. Reduction of Bacillus cereus spores in sikhye, a traditional Korean rice beverage, by modified tyndallization processes with and without carbon dioxide injection.  Lett. Appl. Microbiol. 55:218-223.

Seo, H.S., J. Bang, H. Kim, L.R. Beuchat, S.Y. Cho, and J.H. Ryu. 2012. Development of an antimicrobial sachet containing encapsulated allyl isothiocyanate to inactivate Escherichia coli O157:H7 on spinach leaves.  Int. J. Food Microbiol. 159:136-143.

Bang, J., H. Kim, H. Kim, L.R. Beuchat, Y. Kim, and J.-H. Ryu. 2011. Reduction of Escherichia coli O157:H7 on radish seeds by sequential application of aqueous chlorine dioxide and dry-heat treatment.  Lett. Appl. Microbiol. 53:424-429.

Bang, J., H. Kim, H. Kim, L.R. Beuchat, and J.-H. Ryu. 2011. Combined effects of chlorine dioxide, drying, and dry heat treatments in inactivating microorganisms on radish seeds.  Food Microbiol. 28:114-118.

Bang, J., H. Kim, H. Kim, L.R. Beuchat, and J.-H. Ryu. 2011. Inactivation of Escherichia coli O157:H7 on radish seeds by sequential treatments with chlorine dioxide, drying, and dry heat without loss of seed viability.  Appl. Environ. Microbiol. 77:6680-6686.

Beuchat, L.R. and D.A. Mann. 2011. Inactivation of Salmonella on in-shell pecans during conditioning treatments preceding cracking and shelling.  J. Food Prot. 74:588-602.

Choi, S., J. Bang, H. Kim, L.R. Beuchat, and J.-H. Ryu. 2011. Survival and colonization of Escherichia coli O157:H7 on spinach leaves as affected by inoculum level and carrier, temperature, and relative humidity.  J. Appl. Microbiol. 111:1465-1472.

Beuchat, L.R., and D.A. Mann. 2011. Inactivation of Salmonella on pecan nutmeats by hot air treatment and oil roasting. J. Food Prot. 74:1441-1450.

Bang, J., H. Kim, H. Kim, L.R. Beuchat, and J.H. Ryu. 2011. Combined effects of chlorine dioxide, drying, and dry heat treatments in inactivating microorganisms on radish seeds. Food Microbiol. 28:114-118.

Beuchat, L.R. and D.A. Mann. 2011. Inactivation of Salmonella on in-shell pecans during conditioning treatments preceding cracking and shelling. J. Food Prot. 74:588-602.

Bang, J., L.R. Beuchat, M.B. Gu, H.I. Chang, and J.-H. Ryu. 2010. Identification of Yersinia enterocolitica using a random genomic DNA microarray chip. Lett. Appl. Microbiol. 51:665-560.

Beuchat, L.R. and D.A. Mann. 2010. Factors affecting infiltration and survival of Salmonella on in-shell pecans and pecan nutmeats. J. Food Prot. 73:1257-1268.

Beuchat, L.R. and D.A. Mann. 2010. Survival and growth of Salmonella in high-moisture pecan nutmeats, in-shell pecans, inedible nut components, and orchard soil. J. Food Prot. 73:1975-1985.

Erickson, M.C., J. Liao, A.S. Payton, D.G. Riley, C.C. Webb, L.E. Davey, S. Kimbrel, L. Ma, G.D. Zhang, I. Flitcroft, M.P. Doyle, and L.R. Beuchat. 2010. Preharvest internalization of Eschcerichia coli O157:H7 into lettuce leaves, as affected by insect and physical damage. J. Food Prot. 73:1809-1816.

Kim, H., H. Kim, J. Bang, L.R. Beuchat, and J.-H. Ryu. 2010. Synergistic effect of chlorine dioxide and drying treatments for inactivating Escherichia coli O157:H7 on radish seeds. J. Food Prot. 73:1225-1230.

Richardson, A.N., L.R. Beuchat, S. Lambert, D. Williams, and M.A. Smith. 2010. Comparison of virulence of three strains of Cronobacter sakazakii in neonatal CD-1 mice. J. Food Prot. 73:849-854.

Beuchat, L.R., H. Kim, J.B. Gurtler, L.C. Lin, J.H. Ryu, and G.M. Richards. 2009. Cronobacter sakazakii in foods and factors affecting its survival, growth, and inactivation. Int. J. Food Microbiol. 136:204-213.

Kim, H., Y. Lee, L.R. Beuchat, B.J. Yoon, and J.H. Ryu. 2009. Microbiological examination of vegetable seed sprouts in Korea .  J. Food Prot. 72:856-859.

Pangloli, P., Y.C. Hung, L.R. Beuchat, C.H. King, and Z.H. Zha. 2009. Reduction of Escherichia coli O157:H7 on produce by use of electrolyzed water under simulated food service operation conditions. J. Food Prot. 72:1854-1861.

Taormina , P.J., L.R. Beuchat, M.C. Erickson, L. Ma, G.D. Zhang, and M.P. Doyle. 2009. Transfer of Escherichia coli O157:H7 to iceberg lettuce via simulated field coring.  J. Food Prot. 72:465-472.

Zhang, G.D., L. Ma, L.R. Beuchat, M.C. Erickson, V.H. Phelan, and M.P. Doyle. 2009. Evaluation of treatments for elimination of foodborne pathogens on the surface of leaves and roots of lettuce (Lactuca sativa L.).  J. Food Prot. 72:228-234.

Zhang, G.D., L. Ma, L.R. Beuchat, M.C. Erickson, V.H. Phelan, and M.P. Doyle. 2009. Lack of internalization of Escherichia coli O157:H7 in lettuce (Lactuca sativa L.) after leaf surface and soil inoculation. J. Food Prot. 72:2028-2037.

Zhang, G.D., L. Ma, L.R. Beuchat, M.C. Erickson, V.H. Phelan, and M.P. Doyle. 2009. Heat and drought stress during growth of lettuce (Lactuca sativa L.) does not promote internalization of Escherichia coli O157:H7. J. Food Prot. 72:2471-2475.