Efficacy of aqueous solution of n-halamine to reduce microbiological contamination on cattle hides for meat safety with byproduct quality assurance
2020
Sarker, Majher I. | Long, Wilbert Iii | Liu, Cheng Kung
Bacterial contamination on the outer grained hide of cattle serves as a significant challenge to the meat and hide processing plants and food safety. Cattle serves as a host to several bacteria including pathogens which may become firmly lodged on a cattle's hide during their lifespan and can facilitate cross contamination of the underlying meat and meat processing equipment in a slaughter house. In this study, the efficacy of sodium dichloroisocyanurate dehydrate (SDCIC) which belongs to N-halamine group of compound is evaluated on inhibition of the natural-borne bacteria from the haired surface of on cattle hide. Spray-washing with 0.25%, 0.50% and 0.75% aqueous SDCIC solutions reduced total aerobic bacteria on hide surface by 1.6 and 2.37 and 3.57 log CFU/50 cm2 respectively in 5 minutes. Similarly, in comparison with water spray, a 5 minute treatment with 0.25, 0.50 and 0.75% SDCIC resulted in a reduction of Enterobacteriaceae (ENT) and related gram-negative bacilli (gnEB) counts by 1.2, 2.22 and 4.22 log CFU/50 cm2 respectively. The highest reduction of Ecoli recovery of 1.48 log CFU/50 cm2 was observed with a spray treatment of 0.75% SDCIC in 1 minute. Likewise, 0.75% SDCIC spray treatment resulted in 2.5 and 3.65 log CFU/50 cm2 reduction of Salmonella in 1 and 5 minute, respectively in comparison to their respective controls. Leather from treated hides was tested to evaluate the effects of N-halamine solutions on structural, mechanical and subjective properties of produced leather in which no major detrimental impacts were found.
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