K T Rajkowski

Summary

Affiliation: Eastern Regional Research Center
Country: USA

Publications

  1. ncbi request reprint Use of selective media to recover Salmonella and Vibrio cholerae after growth in reconditioned pork-processing wastewater
    K T Rajkowski
    U S Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, Wyndmoor, Pennsylvania 19038, USA
    J Food Prot 62:724-30. 1999
  2. ncbi request reprint Recovery and survival of Escherichia coli O157:H7 in reconditioned pork-processing wastewater
    K T Rajkowski
    U S Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, Wyndmoor, Pennsylvania 19038 8598, USA
    J Food Prot 62:731-4. 1999
  3. ncbi request reprint Irradiation D-values for Escherichia coli O157:H7 and Salmonella sp. on inoculated broccoli seeds and effects of irradiation on broccoli sprout keeping quality and seed viability
    Kathleen T Rajkowski
    U S Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, 600 East Mermaid Lane, Wyndmoor, Pennsylvania 19038, USA
    J Food Prot 66:760-6. 2003
  4. ncbi request reprint Reduction of Salmonella spp. and strains of Escherichia coli O157:H7 by gamma radiation of inoculated sprouts
    K T Rajkowski
    U S Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, Microbial Food Safety Research Unit, Wyndmoor, Pennsylvania 19038, USA
    J Food Prot 63:871-5. 2000
  5. ncbi request reprint Growth and recovery of selected gram-negative bacteria in reconditioned wastewater
    K T Rajkowski
    US Department of Agriculture, Eastern Regional Research Center, Agricultural Research Service, Wyndmoor, Pennsylvania 19038, USA
    J Food Prot 64:1761-7. 2001
  6. ncbi request reprint Alfalfa seed germination and yield ratio and alfalfa sprout microbial keeping quality following irradiation of seeds and sprouts
    K T Rajkowski
    US Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, Wyndmoor, Pennsylvania 19038, USA
    J Food Prot 64:1988-95. 2001
  7. doi request reprint Inactivation of Escherichia coli JM109, DH5alpha, and O157:H7 suspended in Butterfield's Phosphate Buffer by gamma irradiation
    C H Sommers
    Eastern Regional Research Center, Agricultural Research Service, U S Dept of Agriculture, 600 East Mermaid Lane, Wyndmoor, PA 19038, USA
    J Food Sci 73:M87-90. 2008
  8. ncbi request reprint Effect of carbon dioxide under high pressure on the survival of cheese starter cultures
    D L Van Hekken
    Agricultural Research Service, US Department of Agriculture, Eastern Regional Research Center, Dairy Products Research Unit, Wyndmoor, Pennsylvania 19038, USA
    J Food Prot 63:758-62. 2000
  9. ncbi request reprint Warm water treatment in combination with modified atmosphere packaging reduces undesirable effects of irradiation on the quality of fresh-cut iceberg lettuce
    Xuetong Fan
    Eastern Regional Research Center, Agricultural Research Service, U S Department of Agriculture, 600 East Mermaid Lane, Wyndmoor, Pennsylvania 19038, USA
    J Agric Food Chem 51:1231-6. 2003
  10. ncbi request reprint Simplified qualitative method for canavanine in seeds and sprouts
    Kathleen T Rajkowski
    US Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, Food Safety Intervention Technologies Research Unit, 600 East Mermaid Lane, Wyndmoor, Pennsylvania 19038 8598, USA
    J Food Prot 67:212-4. 2004

Collaborators

Detail Information

Publications14

  1. ncbi request reprint Use of selective media to recover Salmonella and Vibrio cholerae after growth in reconditioned pork-processing wastewater
    K T Rajkowski
    U S Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, Wyndmoor, Pennsylvania 19038, USA
    J Food Prot 62:724-30. 1999
    ..Care should be used in choosing the procedure and plating medium for quantitative recovery of pathogens from such a nutrient-limiting environment...
  2. ncbi request reprint Recovery and survival of Escherichia coli O157:H7 in reconditioned pork-processing wastewater
    K T Rajkowski
    U S Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, Wyndmoor, Pennsylvania 19038 8598, USA
    J Food Prot 62:731-4. 1999
    ..These results indicate that E. coli O157:H7 can survive and grow in this particular nutrient-limited wastewater, suggesting a potential hazard if this water becomes contaminated with this pathogen...
  3. ncbi request reprint Irradiation D-values for Escherichia coli O157:H7 and Salmonella sp. on inoculated broccoli seeds and effects of irradiation on broccoli sprout keeping quality and seed viability
    Kathleen T Rajkowski
    U S Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, 600 East Mermaid Lane, Wyndmoor, Pennsylvania 19038, USA
    J Food Prot 66:760-6. 2003
    ..11 kGy, respectively. With the irradiation process, a dose of up to 2 kGy can extend the shelf life of broccoli sprouts. A dose of > 2 kGy would have an adverse effect on the broccoli seed and decrease the yield of broccoli sprouts...
  4. ncbi request reprint Reduction of Salmonella spp. and strains of Escherichia coli O157:H7 by gamma radiation of inoculated sprouts
    K T Rajkowski
    U S Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, Microbial Food Safety Research Unit, Wyndmoor, Pennsylvania 19038, USA
    J Food Prot 63:871-5. 2000
    ..5 kGy or greater. Ionizing radiation is a process that can be used to reduce the population of pathogens on sprouts...
  5. ncbi request reprint Growth and recovery of selected gram-negative bacteria in reconditioned wastewater
    K T Rajkowski
    US Department of Agriculture, Eastern Regional Research Center, Agricultural Research Service, Wyndmoor, Pennsylvania 19038, USA
    J Food Prot 64:1761-7. 2001
    ..These results indicate that caution should be used in attempting direct recoveries using selective media of the four gram-negative bacteria species used in this study from the nutrient-limited water environment...
  6. ncbi request reprint Alfalfa seed germination and yield ratio and alfalfa sprout microbial keeping quality following irradiation of seeds and sprouts
    K T Rajkowski
    US Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, Wyndmoor, Pennsylvania 19038, USA
    J Food Prot 64:1988-95. 2001
    ..The irradiation process can be used to increase the shelf life of alfalfa sprouts, and irradiating alfalfa seeds at doses up to 2 kGy does not unacceptably decrease the yield ratio for production of alfalfa sprouts...
  7. doi request reprint Inactivation of Escherichia coli JM109, DH5alpha, and O157:H7 suspended in Butterfield's Phosphate Buffer by gamma irradiation
    C H Sommers
    Eastern Regional Research Center, Agricultural Research Service, U S Dept of Agriculture, 600 East Mermaid Lane, Wyndmoor, PA 19038, USA
    J Food Sci 73:M87-90. 2008
    ....
  8. ncbi request reprint Effect of carbon dioxide under high pressure on the survival of cheese starter cultures
    D L Van Hekken
    Agricultural Research Service, US Department of Agriculture, Eastern Regional Research Center, Dairy Products Research Unit, Wyndmoor, Pennsylvania 19038, USA
    J Food Prot 63:758-62. 2000
    ....
  9. ncbi request reprint Warm water treatment in combination with modified atmosphere packaging reduces undesirable effects of irradiation on the quality of fresh-cut iceberg lettuce
    Xuetong Fan
    Eastern Regional Research Center, Agricultural Research Service, U S Department of Agriculture, 600 East Mermaid Lane, Wyndmoor, Pennsylvania 19038, USA
    J Agric Food Chem 51:1231-6. 2003
    ..These results suggest lettuce treated with warm water and irradiated at 0.5 or 1 kGy had the best sensory quality without significant loss in texture, vitamin C, or total antioxidants...
  10. ncbi request reprint Simplified qualitative method for canavanine in seeds and sprouts
    Kathleen T Rajkowski
    US Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, Food Safety Intervention Technologies Research Unit, 600 East Mermaid Lane, Wyndmoor, Pennsylvania 19038 8598, USA
    J Food Prot 67:212-4. 2004
    ..Broccoli and radish seed extracts were negative for canavanine. This simple method is useful to track the release and decrease of canavanine in the sprout water...
  11. ncbi request reprint Effect of alfalfa seed washing on the organic carbon concentration in chlorinated and ozonated water
    Kathleen T Rajkowski
    U S Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, 600 East Mermaid Lane, Wyndmoor, Pennsylvania 19038, USA
    J Food Prot 67:813-7. 2004
    ..If the washing process using ozonated water is not followed by the recommended hypochlorite treatment or continually purged with ozone, pathogen growth is still possible...
  12. ncbi request reprint Effect of gamma or beta radiation on Salmonella DT 104 in ground pork
    Kathleen T Rajkowski
    Food Safety Intervention Technologies Research Unit, Eastern Regional Research Center, Agricultural Research Service, U S Department of Agriculture, 600 East Mermaid Lane, Wyndmoor, Pennsylvania 19038, USA
    J Food Prot 69:1430-3. 2006
    ..001) between the radiation D10-values obtained with the two radiation sources. The radiation D10-values were within the reported range for irradiation destruction of Salmonella contaminated raw meat products...
  13. doi request reprint Radiation sensitivity of Escherichia coli JM109 and DH5 alpha
    Christopher H Sommers
    J Food Sci 73:vii. 2008
  14. ncbi request reprint Inactivation of Escherichia coli O157:H7 and Salmonella by gamma irradiation of alfalfa seed intended for production of food sprouts
    Donald W Thayer
    Food Safety Intervention Technologies Research Unit, U S Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, 600 East Mermaid Lane, Wyndmoor, Pennsylvania 19038, USA
    J Food Prot 66:175-81. 2003
    ..3- and 2-log inactivations can be achieved with a 2-kGy dose of ionizing radiation, which will permit satisfactory commercial yields of sprouts from alfalfa seed contaminated with E. coli O157:H7 and Salmonella, respectively...