Volume 39, Issue 6 e12704
ORIGINAL ARTICLE

Eugenol as an antimicrobial wash treatment reduces Campylobacter jejuni in postharvest poultry

Basanta R. Wagle

Basanta R. Wagle

Department of Poultry Science, University of Arkansas, Fayetteville, Arkansas

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Komala Arsi

Komala Arsi

Department of Poultry Science, University of Arkansas, Fayetteville, Arkansas

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Sandip Shrestha

Sandip Shrestha

Department of Poultry Science, University of Arkansas, Fayetteville, Arkansas

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Abhinav Upadhyay

Abhinav Upadhyay

Department of Animal Science, University of Connecticut, Storrs, Connecticut

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Indu Upadhyaya

Indu Upadhyaya

School of Agriculture, Tennessee Tech University, Cookeville, Tennessee

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Kanika Bhargava

Kanika Bhargava

Department of Human Environmental Sciences, University of Central Oklahoma, Edmond, Oklahoma

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Annie Donoghue

Annie Donoghue

Poultry Production and Product Safety Research Unit, ARS, USDA, Fayetteville, Arkansas

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Dan J. Donoghue

Corresponding Author

Dan J. Donoghue

Department of Poultry Science, University of Arkansas, Fayetteville, Arkansas

Correspondence

Dan J. Donoghue, Department of Poultry Science, University of Arkansas, O 408, 1260 W Maple St, Fayetteville, AR.

Email: [email protected]

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First published: 29 August 2019
Citations: 17

Funding information: USDA-NIFA-OREI, Grant/Award Number: 2017-51300-26815

Abstract

The efficacy of the natural plant-derived compound, eugenol (EG), as an antimicrobial wash treatment to reduce Campylobacter jejuni in postharvest poultry was investigated. The antimicrobial efficacy of EG was studied as a suspension, emulsion, or nanoemulsion treatment (two trials each). In each trial, chicken skin samples were inoculated with C. jejuni (∼7.2 Log CFU/sample), washed with treatments (0, 0.125, 0.25, 0.5, 1, or 2% EG corresponds to 0, 7.61, 15.22, 30.45, 60.90, or 121.8 mM, respectively) for 1 min, drip dried for 2 min, and then processed at 0, 8, and 24 hr of refrigerated storage (n = 5 samples/treatment/time point). All doses of the EG suspension consistently reduced C. jejuni counts with the greatest reduction (>2.0 Log CFU/sample) for the 2% dose when compared with controls (p < .05). EG emulsions or nanoemulsions did not provide any additional reduction in C. jejuni when compared to EG suspension. Our results suggest that EG could be an effective postharvest intervention strategy for reducing C. jejuni contamination on poultry products.

Practical Applications

Campylobacter jejuni, a leading cause of foodborne illness in humans, is strongly associated with the consumption of contaminated poultry products. Interventions reducing C. jejuni contamination in poultry would reduce the risk of subsequent human infections. In this study, the antimicrobial efficacy of eugenol was studied in three different delivery systems; suspension, emulsion, or nanoemulsion. Our results demonstrated that eugenol was effective in reducing C. jejuni counts on chicken skin and can be used as a potential strategy to reduce Campylobacter on poultry products.

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