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Animal Sciences

Iowa State University

Bacteria

Publication Year

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Full-Text Articles in Life Sciences

Microbiological Decontamination Of Food Animal Carcasses By Washing And Sanitizing Systems: A Review, James S. Dickson, Maynard E. Anderson Feb 1992

Microbiological Decontamination Of Food Animal Carcasses By Washing And Sanitizing Systems: A Review, James S. Dickson, Maynard E. Anderson

James S. Dickson

Microbial contamination of animal carcasses is a result of the necessary procedures required to process live animals into retail meat. The contamination can be minimized by good manufacturing processes, but the total elimination of foodborne pathogenic microorganisms is difficult, if not impossible. A variety of methods have been developed to reduce the levels of contaminating bacteria on carcasses, although most of the current methods focus on washing and sanitizing procedures. The commonly used sanitizing agents include hot water, chlorine, and short-chain organic acids. The effectiveness of these compounds varies by the concentration used, the temperature of the sanitizers and contact …


Effect Of Electrical Charge On Attachment Of Salmonella Typhimurium To Meat Surfaces, James S. Dickson, John D. Crouse Jan 1989

Effect Of Electrical Charge On Attachment Of Salmonella Typhimurium To Meat Surfaces, James S. Dickson, John D. Crouse

James S. Dickson

Treating tissue with electrical current was found to affect both the initial attachment and total numbers of attached Salmonella typhimun’unl to meat tissues. When lean tissue was attached to the positive terminal of the power supply operating at 50 volts/125 mA DC, the total numbero f attachedc ells increasedT. hcrc was no effect when the samples were attached to the negative terminal. There was a significant (PcO.05) effect on the percentage of strongly attached bacteria with an increase in treating time. Electrical current was found to increase the percentage of strongly attached cells immediately after the current was applied.