Food Science & Technology: Personnel

Larry Beuchat

 

Description of Research Interests

• 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.

Books

Doyle, M. P., L. R. Beuchat and T. J. Montville (ed). 1997.Food Microbiology: Fundamentals and Frontiers. Am. Soc. Microbiol., Washington, D.C. 768 pp.

Beuchat, L. R. 1997. Traditional fermented foods. In: Food Microbiology: Fundamentals and Frontiers. (M. P. Doyle, L. R. Beuchat and T. J. Montville, ed.) Am. Soc. Microbiology, Washington, D.C. pp. 629-648.

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

Selected Recent Publications

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.

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.

Beuchat, L. R. and D. A. Mann.  2008.  Survival and growth of acid-adapted and unadapted Salmonella in and on raw tomatoes as affected by variety, stage or ripeness, and storage temperature.  J. Food Prot.  71:1572-1579.

Kim, H., J. Bang, L. R. Beuchat, and J.-H. Ryu.  2008.  Fate of Enterobacter sakazakii attached to or in biofilms on stainless steel upon exposure to various temperatures and relative humidities.  J. Food Prot.  71:940-945.

Kim, H., Y. Kang, L. R. Beuchat, and J.-H. Ryu.  2008.  Production and stability of chlorine dioxide inorganic acid solutions as affected by pH, type of acid, and concentration of sodium chlorite, and its effectiveness in inactivating Bacillus cereus spores.  Food Microbiol.  25:964-969.

Mann, D. A. and L. R. Beuchat.  2008.  Combination of antimycotics to inhibit the growth of molds capable of producing 1,3-pentadiene.  Food Microbiol.  25:144-153.

Vojdani, J. D., L. R. Beuchat, and R. V. Tauxe.  2008.  Juice-associated outbreaks of illness in the United States, 1995-2005.  J. Food Prot.  71:356-364.

Beuchat, L.R. 2007. Managing food safety risks in the fresh-cut industry.  Acta Hort. 746:102-110.

Beuchat, L.R., D.A. Mann, and J.B. Gurtler. 2007. Comparison of dry sheet media and conventional agar media methods for enumerating yeasts and molds in food.  J. Food Prot. 70:2661-2664.

Bilgic, A., W.J. Florkowski, P. Paraskova, M.S. Chinnan, J. Jordanov, A.V.A. Resurreccion, and L.R. Beuchat. 2007. Niche market meats in Bulgaria .  J. Food Dist. Res. Soc. 38:17-24.

Gurtler, J.B. and L.R. Beuchat. 2007. Survival of Enterobacter sakazakii in powdered infant formula as affected by composition, water activity, and temperature.  J. Food Prot. 70:1579-1586.

Gurtler, J.B. and L.R. Beuchat. 2007. Growth of Enterobacter sakazakii in reconstituted infant formula as affected by composition and temperature.  J. Food Prot. 70:2095-2103.

Gurtler, J.B. and L.R. Beuchat. 2007. Inhibition of growth of Enterobacter sakazakii in reconstituted infant formula by the lactoperoxidase system.  J. Food Prot. 70:2104-2110.

Kim, H., J.H. Ryu, and L.R. Beuchat. 2007. Effectiveness of disinfectants in killing Enterobacter sakazakii in suspension, dried on the surface of stainless steel, and in a biofilm.  Appl. Environ. Microbiol. 73:1256-1265.

Lin, L.C. and L.R. Beuchat. 2007. Survival and growth of Enterobacter sakazakii in infant cereal as affected by composition, reconstitution liquid, and storage temperature.  J. Food Prot. 70:1410-1422.

Lin, L.C. and L.R. Beuchat. 2007. Survival of Enterobacter sakazakii in infant cereal as affected by composition, water activity, and temperature.  Food Microbiol. 24:767-777.

Murray, M.B. J.B. Gurtler, J.H. Ryu, M.A. Harrison, and L.R. Beuchat. 2007. Evaluation of direct plating methods to enumerate Alicyclobacillus in beverages.  Int. J. Food Microbiol. 115:59-69.

Palumbo, M.S., J.R. Gorny, D.E. Gombas, L.R. Beuchat, C.M. Bruhn, B. Cassen, P. Delaquis, J.M. Farber, L.J. Harris, K. Ito, M.T. Osterholm, M. Smith, and K.L.J. Swanson. 2007. Recommendations for handling fresh-cut leafy green salads by consumers and retail foodservice operators.  Food Prot. Trends 27:892-898.

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