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Full-Text Articles in Physical Sciences and Mathematics
Hot Water Treatment As A Kill-Step To Inactivate Escherichia Coli O157:H7, Salmonella Enterica, Listeria Monocytogenes And Enterococcus Faecium On In-Shell Pecans, Karuna Kharel, Veerachandra K. Yemmireddy, Charles J. Graham, Witoon Prinyawiwatkul, Achyut Adhikari
Hot Water Treatment As A Kill-Step To Inactivate Escherichia Coli O157:H7, Salmonella Enterica, Listeria Monocytogenes And Enterococcus Faecium On In-Shell Pecans, Karuna Kharel, Veerachandra K. Yemmireddy, Charles J. Graham, Witoon Prinyawiwatkul, Achyut Adhikari
School of Earth, Environmental, and Marine Sciences Faculty Publications and Presentations
In-shell pecans are susceptible to microbial contamination. This study was performed to investigate feasibility of using hot water treatment as a kill-step for food-borne pathogens during pecan shelling. In-shell pecans were subjected to hot water at 70, 80 or 90 °C for 1, 2, 3, 4 or 5 min. The time-temperature treatments to achieve a 5-log reduction of Salmonella enterica, Escherichia coli O157:H7, Listeria monocytogenes, and non-pathogenic Enterococcus faecium were determined. Thermal death values were determined for each tested condition. L. monocytogenes was most susceptible to heat treatment and were reduced by 4.6 ± 0.35 log CFU/g at 70 …
Effect Of Surrounding Vegetation On Microbial Survival Or Die-Off On Watermelon Surface In An Agriculture Setting, Vijay Singh Chhetri, Kathryn Fontenot, Ronald Strahan, Veerachandra K. Yemmireddy, Katheryn J. Parraga Estrada, Achyut Adhikari
Effect Of Surrounding Vegetation On Microbial Survival Or Die-Off On Watermelon Surface In An Agriculture Setting, Vijay Singh Chhetri, Kathryn Fontenot, Ronald Strahan, Veerachandra K. Yemmireddy, Katheryn J. Parraga Estrada, Achyut Adhikari
School of Earth, Environmental, and Marine Sciences Faculty Publications and Presentations
Preharvest contamination of produce with food borne pathogens has been a major food safety issue. In this study, we investigated the effect of surrounding vegetation on the survival of natural and inoculated generic Escherichia coli on watermelon rinds in an agricultural field setting. There was no significant difference (p > .05) on the populations of natural generic E. coli (1–1.46 log Most Probable Number (MPN)/sample) and coliforms (E. coli inoculated on watermelon rind discs was variable with the level of vegetation. A significant reduction in generic E. coli count was observed within 12 hr at all vegetation levels. After 108 …