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

被引：1
|
作者：
McCarthy, William P. [1 ,2 ]
Srinivas, Meghana [3 ,4 ,5 ]
Danaher, Martin [6 ]
Connor, Christine O. [2 ]
Callaghan, Tom F. O. [7 ]
van Sinderen, Douwe [4 ,5 ]
Kenny, John [3 ,8 ]
Tobin, John T. [1 ,8 ]
机构：
[1] Teagasc Food Res Ctr, Food Chem & Technol Dept, Moorepk, Cork, Ireland
[2] Technol Univ Dublin, Sch Food Sci & Environm Hlth, Dublin, Ireland
[3] Teagasc Food Res Ctr, Food Biosci Dept, Moorepk, Cork, Ireland
[4] Univ Coll Cork, Sch Microbiol, Cork, Ireland
[5] Univ Coll Cork, APC Microbiome Ireland, Cork, Ireland
[6] Teagasc Food Res Ctr, Food Safety Dept, Dublin, Ireland
[7] Univ Coll Cork, Sch Food & Nutr Sci, Cork, Ireland
[8] Teagasc, VistaMilk Sci Fdn Ireland Res Ctr, Moorepk, Cork, Ireland
来源：
MICROBIOLOGY-SGM | 2023年 / 169卷 / 07期
基金：
爱尔兰科学基金会;
关键词：
chlorate; contamination; dairy; food safety; Hafnia; milk; NITRATE REDUCTASE; MICROBIAL REDUCTION; CHLORITE DISMUTASE; SODIUM-CHLORATE; PERCHLORATE; (PER)CHLORATE; DAIRY; WATER; PURIFICATION; RESPIRATION;
D O I：
10.1099/mic.0.001347
中图分类号：
Q93 [微生物学];
学科分类号：
071005 ; 100705 ;
摘要：
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.
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页数：10
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