Entomology and Plant Pathology

Dr. Li (Maria) Ma, Associate Professor NIMFFAB

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  B.S., Food Engineering, Dalian Institute
  of Light Industry, PRC, 1985

  Ph.D., Food Microbiology, Purdue University, 1999
  li.ma@okstate.edu

 

Links:

National Institute for Microbial Forensics and Food and Agricultural Biosecurity (NIMFFAB)

Research:

My research interest includes 1) metagenomic studies of microbial ecology related to foodborne pathogens in fresh produce, animals, and the environment, 2) development of rapid molecular detection methods for foodborne pathogens in diagnostic and forensic investigations, and 3) development of novel control strategies for foodborne pathogens.

Recent publications, proceedings, and presentations:

1. Ma, L., G. Zhang, P. Gerner-Smidt, R. V. Tauxe, and M. P. Doyle. 2009. Survival and growth of Salmonella in salsa and related ingredients. Accepted by Journal of Food Protection.

2. Zhang, G., L. Ma, L. 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. Journal of Food Protection. 72(12):2471-2475.

3. Zhang, G., L. Ma, L. 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.) leaf surface and soil inoculation. Journal of Food Protection. 72(10):2025-2037.

4. Erickson, M. C., J. Liao, L. Ma, X. Jiang, and M. P. Doyle. 2009. Inactivation of Salmonella spp. in cow manure composts formulated to different initial C: N ratios. Bioresources and Technology. 100:5898-5903

5. Erickson, M. C., J. Liao, L. Ma, X. Jiang, and M. P. Doyle. 2009. Pathogen inactivation in cow manure compost. Compost Science and Utilization. 17(4):229-236.

6. Ma, L., G. Zhang, P. Gerner-Smidt, V. Mantripragada, I. Ezeoke, and M. P. Doyle. 2009. Thermal inactivation of Salmonella in peanut butter. Journal of Food Protection. 72:1596-1601.

7. Ma, L., G. Zhang, B. Swaminathan, M. P. Doyle, and A. Bowen. 2009. Efficacy of protocols for cleaning and disinfecting infant feeding bottles designed for less developed communities. American Journal of Tropical Medicine & Hygiene. 81:132-139.

8. Zhang, G., L. Ma, V. H. Phelan, and M. P. Doyle. 2009. Efficacy of antimicrobial agents in lettuce leaf process water for control of Escherichia coli O157:H7. Journal of Food Protection. 72:1392-1397.

9. Zhang, G., L. Ma, L. 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.). Journal of Food Protection 72:228-234.

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

11. Ma, L., G. Zhang, J. Sobel, and M. P. Doyle. 2007. Evaluation of the effect of acetylsalicylic acid on Clostridium botulinum growth and toxin production. Journal of Food Protection, 70(12): 2860-2863.

12. Ma, L., J. L. Kornacki, G. Zhang, C. Lin, and M. P. Doyle. 2007. Development of thermal surrogate microorganisms in ground beef for in-plant critical control point validation studies. Journal of Food Protection, 70(4): 952-957.

13. Zhang, G., L. Ma, M. P. Doyle. 2007. Listeria innocua as a surrogate for Listeria monocytogenes for aerosol studies. Journal of Food Protection, 70(8): 1857-1865.

14. Zhang, G., L. Ma, N. Patel, B. Swaminathan, S. Wedel, and Michael P. Doyle. 2007. Isolation of Salmonella Typhimurium from outbreak-associated cake mix. Journal of Food Protection, 70(4): 997-1001.

15. Zhang, G., L. Ma, M. P. Doyle. 2007. Salmonellae reduction in poultry by competitive exclusion bacteria Lactobacillus salivarius, and Streptococcus cristatus. Journal of Food Protection, 70(4): 874-878.

16. Zhang, G., L. Ma, M. P. Doyle. 2007. Potential competitive exclusion bacteria from poultry inhibitory to Campylobacter jejuni and Salmonella spp. Journal of Food Protection, 70(4): 867-873.

 

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