Isolation and identification of chlorate-reducing Hafnia sp. from milk.

Autor: McCarthy WP; Food Chemistry and Technology Department, Teagasc Food Research Centre, Moorepark, Fermoy, Cork, Ireland.; School of Food Science and Environmental Health, Technological University Dublin, Grangegorman, Dublin 7, Ireland., Srinivas M; Food Biosciences Department, Teagasc Food Research Centre, Moorepark, Fermoy, Cork, Ireland.; School of Microbiology, University College Cork, Cork, Ireland.; APC Microbiome Ireland, University College Cork, Cork, Ireland., Danaher M; Food Safety Department, Teagasc Food Research Centre, Ashtown, Dublin 15, Ireland., Connor CO; School of Food Science and Environmental Health, Technological University Dublin, Grangegorman, Dublin 7, Ireland., Callaghan TFO; School of Food and Nutritional Sciences, University College Cork, Cork, Ireland., van Sinderen D; School of Microbiology, University College Cork, Cork, Ireland.; APC Microbiome Ireland, University College Cork, Cork, Ireland., Kenny J; Food Biosciences Department, Teagasc Food Research Centre, Moorepark, Fermoy, Cork, Ireland.; VistaMilk Science Foundation Ireland Research Centre, Teagasc, Moorepark, Fermoy, Cork, Ireland., Tobin JT; Food Chemistry and Technology Department, Teagasc Food Research Centre, Moorepark, Fermoy, Cork, Ireland.; VistaMilk Science Foundation Ireland Research Centre, Teagasc, Moorepark, Fermoy, Cork, Ireland.
Jazyk: angličtina
Zdroj: Microbiology (Reading, England) [Microbiology (Reading)] 2023 Jul; Vol. 169 (7).
DOI: 10.1099/mic.0.001347
Abstrakt: Chlorate has become a concern in the food and beverage sector, related to chlorine sanitizers in industrial food production and water treatment. It is of particular concern to regulatory bodies due to the negative health effects of chlorate exposure. This study investigated the fate of chlorate in raw milk and isolated bacterial strains of interest responsible for chlorate breakdown. Unpasteurized milk was demonstrated to have a chlorate-reducing capacity, breaking down enriched chlorate to undetectable levels in 11 days. Further enrichment and isolation using conditions specific to chlorate-reducing bacteria successfully isolated three distinct strains of Hafnia paralvei . Chlorate-reducing bacteria were observed to grow in a chlorate-enriched medium with lactate as an electron donor. All isolated strains were demonstrated to reduce chlorate in liquid medium; however, the exact mechanism of chlorate degradation was not definitively identified in this study.
Databáze: MEDLINE
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