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United States Department of Agriculture

Agricultural Research Service

Related Topics

Kathleen T Rajkowski
Food Safety and Intervention Technologies
Microbiologist

Phone: (215) 233-6440
Fax: (215) 233-6406
Room 0123
600 E MERMAID LN
ERRC
WYNDMOOR, PA, 19038-8598

Projects
ALTERNATIVE FOOD PROCESSING TECHNOLOGIES
Appropriated (D)
  Accession Number: 421391

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Evaluating natural antimicrobials for food application, in natural antimicrobials for food safety and quality - (Book / Chapter) - (10-Sep-14)
Survival of Campylobacter species after cryogenic freezing in ground turkey patties treated with polyphosphates - (Peer Reviewed Journal) - (08-Sep-14)
Alternative food safety intervention technologies: flash pasteurization of finfish - (Proceedings)
Sommers, C.H., Rajkowski, K.T., Geveke, D.J., Bigley Jr, A.B., Scullen, B.J. 2013. Alternative food safety intervention technologies: flash pasteurization of finfish. Meeting Proceedings. 1:1.
Inactivation of natural microflora and Listeria innocua on raw whole shrimp by ozonated water, antimicrobial coatings, and cryogenic freezing - (Peer Reviewed Journal)
Guo, M., Yang, R., Antenucci, R., Mills, B., Cassidy, J.M., Scullen, O.J., Sites, J.E., Rajkowski, K.T., Sommers, C.H., Jin, Z.T. 2013. Inactivation of natural microflora and Listeria innocua on raw whole shrimp by ozonated water, antimicrobial coatings, and cryogenic freezing. Food Control. 34:24-30.
Microbial quality of catfish nuggets - (Peer Reviewed Journal) - (17-Sep-12)
Prevalence and enumeration of microorganisms on catfish nuggets - (Abstract Only)
Rajkowski, K.T., Sommers, C.H. 2012. Prevalence and enumeration of microorganisms on catfish nuggets [abstract]. International Association of Food Protection, July 22-25, 2012, Providence, Rhode Island. 1:1.
Incidence and inactivation of Listeria spp. on frozen shrimp - (Abstract Only)
Rajkowski, K.T., Sommers, C.H., Antenucci, R., Mills, B., Scullen, O.J., Cassidy, J.M., Sites, J.E. 2012. Incidence and inactivation of Listeria spp. on frozen shrimp [abstract]. IAFP Meeting. July 22-25, 2012, Providence, RI. 1:1.
Inactivation of foodborne pathogens on crawfish tail meat using cryogenic freezing and gamma radiation - (Abstract Only)
Rajkowski, K.T., Sommers, C.H., Antenucci, R., Scullen, O.J., Cassidy, J.M., Bender, E. 2012. Inactivation of foodborne pathogens on crawfish tail meat using cryogenic freezing and gamma radiation [abstract]. IAFP Meeting. July 22-25, 2012, Providence, Rhode Island. 1:1.
Update: intervention strategies for producing safe sprouts - (Abstract Only)
Rajkowski, K.T. 2012. Update: intervention strategies for producing safe sprouts. Meeting Abstract.Capital Area Food Protection Assn. Meeting., Washington, DC., May 17, 2012., Volume 1, Page 1.
Irradiation of seeds and sprouts - (Book / Chapter) - (23-Feb-12)
Prevalence and enumeration of microorganisms on catfish nuggets - (Abstract Only)
Rajkowski, K.T., Hughes, S.G. 2012. Prevalence and enumeration of microorganisms on catfish nuggets. Meeting Abstract. Catfish Farmers of America Meeting. Savannah, Georgia. February 17-18, 2012.1:1.
Thermal inactivation of Escherichia coli O157:H7 and Salmonella on catfish and tilapia - (Peer Reviewed Journal)
Rajkowski, K.T. 2012. Thermal inactivation of Escherichia coli O157:H7 and Salmonella on catfish and tilapia. Food Microbiology. 30(2)427-431.
Effect of anolyte on background microflora, Salmonella and Listeria monocytogenes on catfish fillets - (Peer Reviewed Journal)
Rajkowski, K.T., Sommers, C.H. 2012. Effect of anolyte on background microflora, Salmonella and Listeria monocytogenes on catfish fillets. Journal of Food Protection. 75(4):765-770. DOI: 10.4315/0362-028X.JFP-11-426.
The effect of cryogenic freezing and gamma irradiation on the survival of Salmonella on frozen shrimp - (Peer Reviewed Journal)
Sommers, C.H., Rajkowski, K.T., Sheen, S., Samer, C., Bender, E. 2011. The effect of cryogenic freezing and gamma irradiation on the survival of Salmonella on frozen shrimp. Journal of Food Processing and Technology. DOI: 10.4172/2157-7110 S8-001.
Effect of trisodium phosphate or water dip on the survival of Salmonella and Listeria monocytogenes inoculated catfish before and after freezing - (Peer Reviewed Journal)
Rajkowski, K.T., Sommers, C.H. 2012. Effect of trisodium phosphate or water dip on the survival of Salmonella and Listeria monocytogenes inoculated catfish before and after freezing. Journal of Aquatic Food Product Technology. 21(1):39-47.
Effect of cryogenic freezing on salmonella and listeria recovery from inoculated shrimp - (Abstract Only)
Rajkowski, K.T., Bender, E. 2011. Effect of cryogenic freezing on salmonella and listeria recovery from inoculated shrimp. International Association for Food Protection.,Milwaukee, Wisconsin., 7-31 to 8-3-2011., Poster #: P3-76.
Radiation inactivation of foodborne pathogens on frozen seafood products - (Peer Reviewed Journal)
Sommers, C.H., Rajkowski, K.T. 2011. Radiation inactivation of foodborne pathogens on frozen seafood products. Journal of Food Protection. 74(4):641-644.
Heat Inactivation of Human Pathogens on Catfish - (Abstract Only)
Rajkowski, K.T. 2010. Heat Inactivation of Human Pathogens on Catfish. Federal Catfish Research Conference., Washington, D.C., August 10-11, 2010., Oral Presentation, P.9.
Microbial Background on Retail Catfish - (Abstract Only)
Hughes, S.G., Rajkowski, K.T. 2010. Microbial Background on Retail Catfish. Federal Catfish Research Conference, August 10-11,2010.,Washington, DC. Volume 1, P.5.
Fat content and D-Value, A tale of two finfish - (Abstract Only)
Rajkowski, K.T. 2010. Fat content and D-Value, A tale of two finfish. International Association for Food Protection., August 1-4, 2010., Anaheim, CA., Poster#, P.1-62.
Inactivation of Listeria monocytogenes on catfish - (Abstract Only)
Sommers, C., Rajkowski, K., Mackay, W., 2010. Inactivation of Listeria monocytogenes on catfish [abstract].Federal Catfish Research Conference. Washington, DC. p.1.
Effect of individual quick freezing (IQF) on Salmonella recovery and texture of shrimp - (Abstract Only)
Rajkowski, K.T. 2010. Effect of individual quick freezing (IQF) on Salmonella recovery and texture of shrimp. 2nd International Congress on Seafood Technology (ICST 2010)May 10 – 13, 2010 Anchorage, AK.,Volume #36, P.1.
Antilisterial efficacy and lack of genotoxic potential of Listeria monocytogenes specific bacteriophages - (Abstract Only)
Mackay, W., Sommers, C., Rajkowski, K.,Barton, D., 2010 Antilisterial efficacy and lack of genotoxic potential of Listeria monocytogenes specific bacteriophages [abstract].Annual Meeting of the Society of Toxicology. Salt Lake City, UT. p.1.
Thermal inactivation of four human pathogens on catfish - (Abstract Only)
Rajkowski, K.T. 2009. Thermal inactivation of four human pathogens on catfish. 33rd Annual Seafood Science and Technology Conference., 10/26 to 10/28, 2009., New Orleans, LA., Volume 1, P.1.
Use of 1 % peroxyacetic acid sanitizer in an air-mixing wash basin to remove bacterial pathogen from seeds - (Peer Reviewed Journal)
Rajkowski, K.T., Ashurst, K. 2009. Use of 1 % peroxyacetic acid sanitizer in an air-mixing wash basin to remove bacterial pathogen from seeds. Foodborne Pathogens and Disease. 6(9):1041-1046.
Antilisterial activity and lack of genotoxic potential of L. monocytogenes specific bacteriophages - (Abstract Only)
Sommers, C., Rajkowski, K.,Mackay, W. 2009. Antilisterial activity and lack of genotoxic potential of L. monocytogenes specific baceteriophages. [abstract] International Association of Food Protection. Grapevine, TX. p.1.
Radiation D10-Values on Thawed and Frozen Catfish and Tilapia for Finfish Isolates of Listeria Monocytogenes - (Peer Reviewed Journal)
Rajkowski, K.T. 2008. Radiation D10-Values on Thawed and Frozen Catfish and Tilapia for Finfish Isolates of Listeria Monocytogenes. Journal of Food Protection. 71(11):2278-2282.
Percent Moisture and Seed Coat Characteristics of Alfalfa Seeds After Artificial Inoculation - (Peer Reviewed Journal)
Rajkowski, K.T. 2009. Percent Moisture and Seed Coat Characteristics of Alfalfa Seeds After Artificial Inoculation. Journal of Food Safety. 224-235.
Letter to the Editor. Radiation Sensitivity of Escherichia Coli JM109 and DH5 Alpha - (Other)
Sommers, C.H., Rajkowski, K.T. 2008. Letter to the Editor. Radiation Sensitivity of Escherichia Coli JM109 and DH5 Alpha. Journal of Food Science. 73(1):vii.
Inactivation of Escherichia Coli JM109, DH5 ALPHA and O157:H7 Suspended in Butterfields Phosphate Buffer by Gamma Irradiation - (Peer Reviewed Journal)
Sommers, C.H., Rajkowski, K.T. 2008. Inactivation of Escherichia Coli JM109, DH5 ALPHA and O157:H7 Suspended in Butterfields Phosphate Buffer by Gamma Irradiation. Journal of Food Science. 73(2):M87-M90.
Microbial Quality of Fresh-Cut Iceberg Lettuce Washed in Warm Or Cold Water and Irradiated in a Modified Atmosphere Package - (Peer Reviewed Journal)
Rajkowski, K.T., Fan, X. 2008. Microbial quality of fresh-cut iceberg lettuce washed in warm or cold water and irradiated in a modified atmosphere package. Journal of Food Safety. 28:248-260.
The survival of Shigella sonnei in frozen media and after ultraviolet treatment of ice and inoculated fish samples - (Peer Reviewed Journal)
Rajkowski, K.T. 2007. The survival of Shigella sonnei in frozen media and after ultraviolet treatment of ice and inoculated fish samples. Ice World Journal. 9:14-23.
Inhibition of Shigella Sonnei by Ultraviolet Energy on Agar, Liquid Media and Fresh Produce - (Peer Reviewed Journal)
Rajkowski, K.T. 2007. INHIBITION OF SHIGELLA SONNEI BY ULTRAVIOLET ENERGY ON AGAR, LIQUID MEDIA AND FRESH PRODUCE. Journal of Food Safety. 233-240.
Moisture, Seed Coat Characteristics, and Disinfection of Artificially Inoculated Alfalfa Seeds - (Abstract Only)
Rajkowski, K.T. 2006. Moisture, seed coat characteristics, and disinfection of artificially inoculated alfalfa seeds. IAFP. Calgary, Alberta, Canada. August 15, 2006. Pathogens and Produce Session. Poster No. P-05.
Effect of Gamma Or Beta Radiation on Salmonella Dt 104 Strains in Ground Pork - (Peer Reviewed Journal)
Rajkowski, K.T., Niebuhr, S.E., Dickson, J. 2006. EFFECT OF GAMMA OR BETA RADIATION ON SALMONELLA DT 104 STRAINS IN GROUND PORK. Journal of Food Protection. 69(6):1430-1433.
Radiation Sensitivity and Quality of Fresh-Cut Vegetables Exposed to Gamma Radiation - (Proceedings)
Fan, X., Niemira, B.A., Rajkowski, K.T., Sokorai, K.J. 2006. Radiation sensitivity and quality of fresh-cut vegetables exposed to gamma radiation. IAEA, July 22-30, 2005, Islamabad, Pakistan. p. 286-293.
Studies of Post-Irradiation Survival of Listeria Monocytogenes and L. Innocua on Endive, Regrowth under Modified Atmosphere Packaging and Product Sensory Qualities - (Proceedings)
Niemira, B.A., Fan, X., Sokorai, K.J., Sommers, C.H., Rajkowski, K.T. 2006. STUDIES OF POST-IRRADIATION SURVIVAL OF LISTERIA MONOCYTOGENES AND L. INNOCUA ON ENDIVE, REGROWTH UNDER MODIFIED ATMOSPHERE PACKAGING AND PRODUCT SENSORY QUALITIES. Meeting Abstract. 301-316.
Irradiation Destruct Values of Shigella Sonnie, Salmonella Or Escherichia Coli O157:h7 and Post Irradiation Survival An Regrowth of Indigenous Microflora on Vegetable Sprouts and on Warm Or Cold Water-Washed Cut Iceberg Lettu - (Proceedings)
Rajkowski, K.T. 2005. Irradiation destruct values of shigella sonnie, salmonella or escherichia coli o157:h7 and post irradiation survival an regrowth of indigenous microflora on vegetable sprouts and on warm or cold water-washed cut iceberg lettu. IAEA Research Co-Ordination Meeting. Islambad, Pakistan. July 25-29, 2005. U.S.A. Report.
Irradiation Destruct Values of Shigella Sonnie, Salmonella Or Escherichia Coli O157:h7 and Post Irradiation Survival and Regrowth of Indigenous Microflora on Vegetable Sprouts and on Warm/cold Water-Washed Cut Iceberg Lettuce - (Proceedings)
Rajkowski, K.T., Fan, X., Sommers, C.H., Niemira, B.A. 2006. Irradiation destruct values of shigella sonnie, salmonella or escherichia coli o157:h7 and post irradiation survival and regrowth of indigenous microflora on vegetable sprouts and on warm/cold water-washed cut iceberg lettuce. IAEA, July 25-29, 2005, Vienna, Austria. p. 317-324.
Sensory Evaluation of Irradiated Ground Beef Patties for the National School Lunch Program - (Peer Reviewed Journal)
Fan, X., Niemira, B.A., Rajkowski, K.T., Phillips, J.G., Sommers, C.H. 2004. Sensory evaluation of irradiated ground beef patties for the national school lunch program. Journal of Food Science. 69:S394-S387.
Irradiation of Ready-to-Eat Foods at Usda's Eastern Regional Research Center - 2003 Update - (Proceedings)
Sommers, C.H., Fan, X., Niemira, B.A., Rajkowski, K.T. 2004. Irradiation of ready-to-eat foods at usda's eastern regional research center - 2003 update. Journal of Radiation Physics and Chemistry. 71:511-514.
Effect of Alfalfa Seed Washing on the Organic Carbon Concentration in Chlorinated and Ozonated Water - (Peer Reviewed Journal)
Rajkowski, K.T., Rice, E.W. 2004. EFFECT OF ALFALFA SEED WASHING ON THE ORGANIC CARBON CONCENTRATION IN CHLORINATED AND OZONATED WATER. Journal of Food Protection. 67(4):813-817.
Simplified Qualitative Method for Canavanine in Seeds and Sprouts - (Peer Reviewed Journal)
Rajkowski, K.T. 2004. SIMPLIFIED QUALITATIVE METHOD FOR CANAVANINE IN SEEDS AND SPROUTS. Journal of Food Protection. 67(1):212-214.
Warm Water Treatment in Combination with Modified Atmosphere Packaging Reduced Undesirable Effects of Irradiation on the Quality of Fresh-Cut Iceberg Lettuce - (Peer Reviewed Journal)
FAN, X., TOIVONEN, P.M., RAJKOWSKI, K.T., BAXENDALE, K.J. WARM WATER TREATMENT IN COMBINATION WITH MODIFIED ATMOSPHERE PACKAGING REDUCED UNDESIRABLE EFFECTS OF IRRADIATION ON THE QUALITY OF FRESH-CUT ICEBERG LETTUCE.. JOURNAL OF FOOD SCIENCE. 2002. V. 51. P. 1231-1236.
Irradiation D-Value for Escherichia Coli O157:h7 Sp and Salmonella Sp. on Inoculated Broccoli Seeds and Effect of Irradiaton on Broccoli Sprout Keeping Quality and Seed Viability - (Peer Reviewed Journal)
VOL. 66, NO. 5, 2003, PAGES 760-766
Inactivation of Escherichia Coli O157:h7 and Salmonella by Gamma Irradiaton of Alfalfa Seed Intended for Production of Food Sprouts - (Peer Reviewed Journal) - (13-Sep-02)
Quality of Alfalfa Sprouts Grown from Irradiated Seeds - (Peer Reviewed Journal)
Fan, X., Rajkowski, K.T., Thayer, D.W. 2003. Quality of alfalfa sprouts grown from irradiated seeds. Journal of Food Quality. 26:165-176.
Research Plans: Microbiological and Sensorial Response of Listeria Monocytogenes Inoculated Leafy Salad Vegetables Following Irradiation and Refrigerated Storage under Modified Atmosphere - (Proceedings)
Niemira, B.A., Fan, X., Rajkowski, K.T., Thayer, D.W. 2001. Research plans: microbiological and sensorial response of listeria monocytogenes inoculated leafy salad vegetables following irradiation and refrigerated storage under modified atmosphere. Report of First FAO/IAEA Research Co-Ordination Meeting, November 5-9, 2001, Rio de Janeiro, Brasil. p. 19.
Chemical, Physical and Biological Methods for Controlling Human Pathogens on Sprouts - (Proceedings)
Fett, W.F., Rajkowski, K.T., Thayer, D.W. 1999. Chemical, physical and biological methods for controlling human pathogens on sprouts. United States Japan Natural Resources Protein Panel. Proceedings, 28th Annual Meeting in Tsukuba, Ibaraki, November 7-12, p.84-89.
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Last Modified: 10/22/2014
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