Li Ma

Summary

Affiliation: University of Georgia
Country: USA

Publications

  1. ncbi request reprint Efficacy of protocols for cleaning and disinfecting infant feeding bottles in less developed communities
    Li Ma
    Center for Food Safety, University of Georgia, Griffin, Georgia 30223, USA
    Am J Trop Med Hyg 81:132-9. 2009
  2. ncbi request reprint Surface and internalized Escherichia coli O157:H7 on field-grown spinach and lettuce treated with spray-contaminated irrigation water
    Marilyn 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
  3. ncbi request reprint 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
  4. doi request reprint Fate of manure-borne pathogen surrogates in static composting piles of chicken litter and peanut hulls
    Marilyn C Erickson
    Center for Food Safety, University of Georgia, Griffin, GA 30223, United States
    Bioresour Technol 101:1014-20. 2010
  5. ncbi request reprint Lack of internalization of Escherichia coli O157:H7 in lettuce (Lactuca sativa L.) after leaf surface and soil inoculation
    Guodong Zhang
    Center for Food Safety, University of Georgia, 1109 Experiment Street, Griffin, Georgia 30223 1797, USA
    J Food Prot 72:2028-37. 2009
  6. ncbi request reprint Preharvest internalization of Escherichia coli O157:H7 into lettuce leaves, as affected by insect and physical damage
    Marilyn 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
  7. ncbi request reprint Transfer of Escherichia coli O157:H7 to iceberg lettuce via simulated field coring
    Peter J Taormina
    Center for Food Safety, University of Georgia, 1109 Experiment Street, Griffin, Georgia 30223 1797, USA
    J Food Prot 72:465-72. 2009
  8. ncbi request reprint Salmonellae reduction in poultry by competitive exclusion bacteria Lactobacillus salivarius and Streptococcus cristatus
    Guodong Zhang
    Center for Food Safety, 1109 Experiment Street, University of Georgia, Griffin, Georgia 30223, USA
    J Food Prot 70:874-8. 2007
  9. ncbi request reprint Infrequent internalization of Escherichia coli O157:H7 into field-grown leafy greens
    Marilyn 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
  10. ncbi request reprint Thermal inactivation of Salmonella in peanut butter
    Li Ma
    Center for Food Safety, University of Georgia, Griffin, Georgia 30223 1797, USA
    J Food Prot 72:1596-601. 2009

Collaborators

Detail Information

Publications20

  1. ncbi request reprint Efficacy of protocols for cleaning and disinfecting infant feeding bottles in less developed communities
    Li 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...
  2. ncbi request reprint Surface and internalized Escherichia coli O157:H7 on field-grown spinach and lettuce treated with spray-contaminated irrigation water
    Marilyn 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)...
  3. ncbi request reprint 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...
  4. doi request reprint Fate of manure-borne pathogen surrogates in static composting piles of chicken litter and peanut hulls
    Marilyn 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...
  5. ncbi request reprint Lack of internalization of Escherichia coli O157:H7 in lettuce (Lactuca sativa L.) after leaf surface and soil inoculation
    Guodong 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...
  6. ncbi request reprint Preharvest internalization of Escherichia coli O157:H7 into lettuce leaves, as affected by insect and physical damage
    Marilyn 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...
  7. ncbi request reprint Transfer of Escherichia coli O157:H7 to iceberg lettuce via simulated field coring
    Peter 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...
  8. ncbi request reprint Salmonellae reduction in poultry by competitive exclusion bacteria Lactobacillus salivarius and Streptococcus cristatus
    Guodong 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...
  9. ncbi request reprint Infrequent internalization of Escherichia coli O157:H7 into field-grown leafy greens
    Marilyn 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...
  10. ncbi request reprint Thermal inactivation of Salmonella in peanut butter
    Li 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...
  11. ncbi request reprint Survival and growth of Salmonella in salsa and related ingredients
    Li 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...
  12. doi request reprint Fate of Escherichia coli O157:H7 and Salmonella in soil and lettuce roots as affected by potential home gardening practices
    Marilyn C Erickson
    Center for Food Safety and Department of Food Science and Technology, University of Georgia, 1109 Experiment Street, Griffin, GA, 30223 1797, USA
    J Sci Food Agric 93:3841-9. 2013
    ..The survival and distribution of enteric pathogens in soil and lettuce systems were investigated in response to several practices (soil amendment supplementation and reduced watering) that could be applied by home gardeners...
  13. ncbi request reprint Heat and drought stress during growth of lettuce (Lactuca sativa L.) does not promote internalization of Escherichia coli O157:H7
    Guodong 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...
  14. ncbi request reprint Efficacy of antimicrobial agents in lettuce leaf processing water for control of Escherichia coli O157:H7
    Guodong 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...
  15. ncbi request reprint Development of thermal surrogate microorganisms in ground beef for in-plant critical control point validation studies
    Li 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...
  16. ncbi request reprint Aerosol studies with Listeria innocua and Listeria monocytogenes
    Guodong 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...
  17. ncbi request reprint Evaluation of the effect of acetylsalicylic acid on Clostridium botulinum growth and toxin production
    Li 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...
  18. ncbi request reprint Isolation of Salmonella typhimurium from outbreak-associated cake mix
    Guodong Zhang
    Center for Food Safety, University of Georgia, 1109 Experiment Street, Griffin, Georgia 30223, USA
    J Food Prot 70:997-1001. 2007
    ....
  19. doi request reprint Inactivation of Salmonella spp. in cow manure composts formulated to different initial C:N ratios
    Marilyn 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...
  20. ncbi request reprint Potential competitive exclusion bacteria from poultry inhibitory to Campylobacter jejuni and Salmonella
    Guodong 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...