Effectiveness of Several Antimicrobials Used in a Postchill Decontamination Tank against Salmonella and Campylobacter on Broiler Carcass Parts.

JOURNAL OF FOOD PROTECTION(2018)

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摘要
New microbial performance standards for chicken parts necessitate postchill antimicrobial interventions to make poultry parts safer for consumers. This research was conducted to determine the effectiveness of antimicrobials (0.003% chlorine; 0.07% acidified sodium chlorite [ASC], 0.07 or 0.1% peracetic acid [PAA], and 0.35 or 0.60% cetylpyridinium chloride [CPC]) when used in a postchill decontamination tank to reduce Salmonella and Campylobacter on broiler chicken parts (including breasts, thighs, wings, and drumsticks) and to determine the sensory attributes of the treated samples. Samples (n = 90, 9 treatments35 samples 3 2 replications) were inoculated with Salmonella Typhimurium (10 8 CFU/mL) and Campylobacter jejuni (10(8) CFU/mL). After a 30-min attachment time, chicken parts were rinsed with various antimicrobials in a decontamination tank for 23 s. Salmonella and Campylobacter reduction was determined by sampling parts after the treatments were applied. Sensory evaluation of skin-on (drumettes) and skin-off (breast meat) parts were conducted by untrained panelists by using an 8-point hedonic scale. CPC (0.35 or 0.60%), provided a reduction of 2.5 or 3.5 log CFU/mL on Salmonella and a reduction of 4 or 5 log CFU/mL on Campylobacter, respectively. Both concentrations of PAA (0.07 or 0.1%) provided a 1.5-log reduction on Salmonella and Campylobacter. Chlorine at 0.003% and ASC at 0.07% were the least effective antimicrobials, providing,1-log reduction for both pathogens, which did not differ from the reduction provided by a water rinse alone. Sensory attributes were unaffected in drumettes, and skinless breast fillets received the most acceptable scores (P <= 0.05) for texture, juiciness, and overall acceptability when treated with 0.07% PAA and 0.35% CPC. Results from this study indicated that using PAA and CPC in a postchill decontamination tank are effective treatments for reducing Salmonella and Campylobacter on chicken parts, with minimal effects on product quality.
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关键词
Antimicrobials,Campylobacter,Chicken parts,Postchill decontamination tank,Salmonella
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