Research Topics
| Li MaSummaryAffiliation: University of Georgia Country: USA Publications
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Detail Information
Publications
Efficacy of protocols for cleaning and disinfecting infant feeding bottles in less developed communitiesLi Ma
Center for Food Safety, University of Georgia, Griffin, Georgia 30223, USA
Am J Trop Med Hyg 81:132-9. 2009..When combined with handwashing, use of safe water, and appropriate storage of prepared infant formula, these simple, inexpensive practices could improve the microbiological safety of infant formula feeding in less developed settings...- Surface and internalized Escherichia coli O157:H7 on field-grown spinach and lettuce treated with spray-contaminated irrigation waterMarilyn C Erickson
Center for Food Safety, Department of Food Science and Technology, 1109 Experiment Street, University of Georgia, Griffin, Georgia 30223, USA
J Food Prot 73:1023-9. 2010..Internalization of E. coli O157:H7 into lettuce leaves also occurred with greater persistence in leaves sprayed on the abaxial side (up to 14 days) than in leaves sprayed on the adaxial side (2 days)... - Evaluation of treatments for elimination of foodborne pathogens on the surface of leaves and roots of lettuce (Lactuca sativa L.)Guodong Zhang
Center for Food Safety, University of Georgia, 1109 Experiment Street, Griffin, Georgia 30223 1797, USA
J Food Prot 72:228-34. 2009..1% HgCl2 for 10 min was determined to be the most effective surface disinfection method for inactivating E. coli O157:H7 on lettuce leaves and roots and was also validated for inactivating Salmonella and L. monocytogenes... 
Fate of manure-borne pathogen surrogates in static composting piles of chicken litter and peanut hullsMarilyn C Erickson
Center for Food Safety, University of Georgia, Griffin, GA 30223, United States
Bioresour Technol 101:1014-20. 2010..All three types of bacteria remained detectable by enrichment culture in surface samples composted for 56 days during the winter...- Lack of internalization of Escherichia coli O157:H7 in lettuce (Lactuca sativa L.) after leaf surface and soil inoculationGuodong Zhang
Center for Food Safety, University of Georgia, 1109 Experiment Street, Griffin, Georgia 30223 1797, USA
J Food Prot 72:2028-37. 2009..coli O157:H7. Internalization of E. coli O157:H7 in lettuce leaves and roots did not occur, regardless of the type of lettuce, age of plants, or strain of E. coli O157:H7... - Preharvest internalization of Escherichia coli O157:H7 into lettuce leaves, as affected by insect and physical damageMarilyn C Erickson
Center for Food Safety, 1109 Experiment Street, Department of Crop and Soil Sciences, University of Georgia, Griffin, Georgia 30223, USA
J Food Prot 73:1809-16. 2010..Surface-contaminated leaves physically injured through file abrasions also had significantly reduced populations of both total and internalized E. coli O157:H7 as compared with nonabraded leaves 2 weeks after pathogen exposure... - Transfer of Escherichia coli O157:H7 to iceberg lettuce via simulated field coringPeter J Taormina
Center for Food Safety, University of Georgia, 1109 Experiment Street, Griffin, Georgia 30223 1797, USA
J Food Prot 72:465-72. 2009..Spraying contaminated lettuce with chlorinated or untreated water reduces but does not eliminate E. coli O157:H7... - Salmonellae reduction in poultry by competitive exclusion bacteria Lactobacillus salivarius and Streptococcus cristatusGuodong Zhang
Center for Food Safety, 1109 Experiment Street, University of Georgia, Griffin, Georgia 30223, USA
J Food Prot 70:874-8. 2007..In conclusion, CE isolates L. salivarius Salm-9, List40-18, and List40-41 and S. cristatus List40-13 either individually or in combination were effective in significantly preventing Salmonella colonization of chickens... - Thermal inactivation of Salmonella in peanut butterLi Ma
Center for Food Safety, University of Georgia, Griffin, Georgia 30223 1797, USA
J Food Prot 72:1596-601. 2009..Thermal treatments of peanut butter at 90 degrees C for less than 30 min are not sufficient to kill large populations (5 log CFU/g) of Salmonella in highly contaminated peanut butter... - Infrequent internalization of Escherichia coli O157:H7 into field-grown leafy greensMarilyn C Erickson
Center for Food Safety, Department of Food Science and Technology, University of Georgia, Griffin, Georgia 30223, USA
J Food Prot 73:500-6. 2010..These results indicate that internalization of O157 via plant roots in the field is rare and when it does occur, O157 does not persist 7 days later... - Survival and growth of Salmonella in salsa and related ingredientsLi Ma
Center for Food Safety, University of Georgia, Griffin, Georgia 30223 1797, USA
J Food Prot 73:434-44. 2010..These results highlight the importance of preharvest pathogen contamination control of fresh produce and proper formulation and storage of salsa... - Heat and drought stress during growth of lettuce (Lactuca sativa L.) does not promote internalization of Escherichia coli O157:H7Guodong Zhang
Center for Food Safety, University of Georgia, Griffin, Georgia 30223 1797, USA
J Food Prot 72:2471-5. 2009..coli O157:H7. Heat stress during growth of lettuce did not promote or enhance internalization of E. coli O157:H7, regardless of the moisture content in the soil... - Efficacy of antimicrobial agents in lettuce leaf processing water for control of Escherichia coli O157:H7Guodong Zhang
Center for Food Safety, University of Georgia, Griffin, Georgia 30223 1797, USA
J Food Prot 72:1392-7. 2009..Therefore, it is important to understand the impact of organic load when validating the effectiveness of antimicrobial treatments... - Development of thermal surrogate microorganisms in ground beef for in-plant critical control point validation studiesLi Ma
Center for Food Safety, University of Georgia, Griffin, Georgia 30223 1797, USA
J Food Prot 70:952-7. 2007..However, additional studies in ground beef are needed with the Pediococcus strains in the desired temperature range intended for validation purposes... - Aerosol studies with Listeria innocua and Listeria monocytogenesGuodong Zhang
Center for Food Safety, University of Georgia, Griffin, Georgia 30223, USA
J Food Prot 70:1857-65. 2007..3, 0.5, and 5 microM in diameter. Results indicate that L. innocua can be used as a surrogate for L. monocytogenes in an aerosol study... - Evaluation of the effect of acetylsalicylic acid on Clostridium botulinum growth and toxin productionLi Ma
Center for Food Safety, University of Georgia, Griffin, Georgia 30223 1797, USA
J Food Prot 70:2860-3. 2007..botulinum. These results would not provide a definitive explanation for differences in toxin production in canned vegetables prepared with and without aspirin... - Isolation of Salmonella typhimurium from outbreak-associated cake mixGuodong Zhang
Center for Food Safety, University of Georgia, 1109 Experiment Street, Griffin, Georgia 30223, USA
J Food Prot 70:997-1001. 2007.... - Inactivation of Salmonella spp. in cow manure composts formulated to different initial C:N ratiosMarilyn C Erickson
Center for Food Safety, University of Georgia, Griffin, GA 30223, United States
Bioresour Technol 100:5898-903. 2009..Supplementation of compost mixtures with 0.08% ammonium sulfate resulted in slightly higher temperatures; however, these higher temperatures did not translate into more rapid rates of pathogen inactivation... - Potential competitive exclusion bacteria from poultry inhibitory to Campylobacter jejuni and SalmonellaGuodong Zhang
Center for Food Safety, 1109 Experiment Street, University of Georgia, Griffin, Georgia 30223, USA
J Food Prot 70:867-73. 2007..Free-range chickens from family farms were better donors of potential CE strongly inhibitory to both Salmonella and Campylobacter than were chickens from commercial farms and broiler chicken research centers...