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Dissertation/Thesis Abstract

The Use of Inorganic and Organic Acids as Short Duration Antimicrobial Dips on Mitigating Pathogens Present on Commercial Chicken during Peri-harvest
by Dittoe, Dana Kristen, Ph.D., University of Arkansas, 2020, 207; 28261260
Abstract (Summary)

With poultry being the most consumed meat in the United States, poultry processors must provide consumers with safe, wholesome products. As a consequence, poultry processors are faced with the challenge of reducing the presence of foodborne pathogens such as Salmonella spp. and Campylobacter jejuni among raw poultry products. Though multi-hurdle approaches using antimicrobials are placed throughout processing to reduce these pathogens, Salmonella and C. jejuni still persist among raw poultry. Thus, it was the objective of the current dissertation to investigate various antimicrobials, organic and inorganic acids, as short duration dips and sprays as means to reduce common pathogens (Salmonella, Campylobacter jejuni, and Escherichia coli) among raw chicken carcasses and parts. It was hypothesized that the use of organic and inorganic acids in poultry part dips would result in a decrease pathogen load and a positive shift in the microbiota of rinsates, thus improving the safety of raw products. Therefore, three projects were devised and executed to investigate the use of inorganic and organic acids as short duration part dips and sprays. The objective of the first study was to evaluate the efficacy of TetraClean Systems aqueous ozone, O3, in combination with PAA as an antimicrobial spray on whole chicken carcasses (Chapter 2). The second project aimed at determining the efficacy of varying concentrations of sodium bisulfate salt, SBS, alone or in combination with peracetic acid, PAA, in 15 s whole part dips (Chapter 3). The objective of the third study was to determine the influence of two antimicrobials, PAA and acidified sodium chlorite (ASC), on the microbiota of chicken thighs inoculated with Salmonella and Campylobacter (Chapter 4). Overall, the data presented in the current dissertation demonstrated the potential use of novel antimicrobials as short duration dips and sprays at mitigating foodborne pathogens present on raw poultry.

Indexing (document details)
Advisor: Ricke, Steven C.
Commitee: Feye, Kristina M., Gibson, Kristen E., Sun, Xiaolun
School: University of Arkansas
Department: Cell & Molecular Biology
School Location: United States -- Arkansas
Source: DAI-B 82/8(E), Dissertation Abstracts International
Subjects: Food Science, Animal sciences, Microbiology
Keywords: Antimicrobial part dips, Foodborne pathogens, Poultry
Publication Number: 28261260
ISBN: 9798582504870
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