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Combinations of plant-derived compounds against Campylobacter in vitro
journal contribution
posted on 2023-05-18, 16:53 authored by Navarro, M, Roger StanleyRoger Stanley, Cusack, A, Sultanbawa, YCampylobacter occur in fresh retail poultry products as a result of their colonization of the gastro-intestinal tract of chickens during growth. Feed additives could be used for suppression of Campylobacter levels in the chickens prior to slaughter. To address this opportunity, feed manufacturers are targeting natural antimicrobials from plant material as new forms of consumer-accepted feed additives. However, to be practical, these natural antimicrobials must be effective at low concentrations. The current study has validated an improved laboratory method to study minimal inhibitory concentrations of plant compounds and their combinations against Campylobacter. The assay was shown to be valid for testing lipid-soluble and water-soluble plant extracts and byproducts from the food industry. The study screened 29 extracts or plant-derived compounds and their mixtures for anti-Campylobacter activity using a laboratory assay. Combinations of oregano, lactic acid, and sorghum byproduct showed effective synergy in anti-Campylobacter activity. The synergies allowed a large reduction in the concentration of the individual compounds needed to kill the bacteria with an 80% reduction in concentration being achieved for oregano essential oil. The assay gives rise to further opportunities for the testing of a greater range of combinations of plant-derived compounds and other natural antimicrobials. The method is robust, simple, and easily automated, and it could be used to adjust the cost of feed formulations by reducing costs associated with antimicrobial feed additives.
History
Publication title
Journal of Applied Poultry ResearchVolume
24Pagination
352-363ISSN
1056-6171Department/School
Tasmanian Institute of Agriculture (TIA)Publisher
Poultry Science Assoc IncPlace of publication
1111 North Dunlap Ave, Savoy, USA, Il, 61874-9604Rights statement
Copyright 2015 Poultry Science Association Inc.Repository Status
- Restricted