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首页> 外文期刊>Food microbiology >Is the production of the biogenic amines tyramine and putrescine a species-level trait in enterococci?
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Is the production of the biogenic amines tyramine and putrescine a species-level trait in enterococci?

机译：生物胺酪胺和腐胺的生产在肠球菌中是否是物种水平的特征？

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摘要

Biogenic amines (BA) are toxic nitrogenous compounds that can be accumulated in foods via the microbial decarboxylation of certain amino acids. Lactic acid bacteria (LAB) strains belonging to different species and genera have been described as BA producers and are mainly responsible for their synthesis in fermented foods. It is generally accepted that the capacity to produced BAs is strain-dependent. However, the large number of enterococci identified as BA producers suggests that the aminogenic trait may be a species-level characteristic. Enterococcus faecalis, Enterococcus faecium and Enterococcus durans strains of different origin were analysed to determine their capacity to produce tyramine and putrescine. The presence of the genes responsible for this and the identity of their flanking regions were checked by PCR. The results suggest that tyramine biosynthesis is a species-level characteristic in E. faecalis, E. faecium and £. durans. Putrescine synthesis was found to be a species-level trait of £ faecalis, with production occurring via the agmatine deamination pathway. Some E. faecium strains of human origin also produced putrescine; this trait was probably acquired via horizontal gene transfer.
机译：生物胺（BA）是有毒的含氮化合物，可通过某些氨基酸的微生物脱羧作用积聚在食品中。属于不同物种和属的乳酸菌（LAB）菌株已被描述为BA生产者，主要负责其在发酵食品中的合成。通常公认的是，产生BA的能力是应变依赖性的。但是，大量被鉴定为BA生产者的肠球菌表明，氨基酸特性可能是物种水平的特征。分析了不同来源的粪肠球菌，粪肠球菌和杜兰肠球菌菌株，以确定它们产生酪胺和腐胺的能力。通过PCR检查负责此的基因的存在及其侧翼区的身份。结果表明酪胺的生物合成是粪肠球菌，粪肠球菌和and的物种级特征。杜兰斯。发现腐胺的合成是粪便的种属特征，其生产通过胍丁胺脱氨途径进行。一些人源的粪肠球菌也产生了腐胺。这种性状可能是通过水平基因转移获得的。

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  • 来源
    《Food microbiology》 |2012年第1期|p.132-138|共7页
  • 作者

    Victor Ladero; Maria Fernandez; Marina Calles-Enriquez; Esther Sanchez-Liana; Elena Canedo; M. Cruz Martin; Miguel A. Alvarez;

  • 作者单位

    Institute de Productos Lacteos de Asturias, IPIA-CS1C, Ota. de infiesto s, Apdo. de Correos 85, 33300 Villaviciosa, Asturias, Spain;

    Institute de Productos Lacteos de Asturias, IPIA-CS1C, Ota. de infiesto s, Apdo. de Correos 85, 33300 Villaviciosa, Asturias, Spain;

    Institute de Productos Lacteos de Asturias, IPIA-CS1C, Ota. de infiesto s, Apdo. de Correos 85, 33300 Villaviciosa, Asturias, Spain;

    Institute de Productos Lacteos de Asturias, IPIA-CS1C, Ota. de infiesto s, Apdo. de Correos 85, 33300 Villaviciosa, Asturias, Spain;

    Institute de Productos Lacteos de Asturias, IPIA-CS1C, Ota. de infiesto s, Apdo. de Correos 85, 33300 Villaviciosa, Asturias, Spain;

    Institute de Productos Lacteos de Asturias, IPIA-CS1C, Ota. de infiesto s, Apdo. de Correos 85, 33300 Villaviciosa, Asturias, Spain;

    Institute de Productos Lacteos de Asturias, IPIA-CS1C, Ota. de infiesto s, Apdo. de Correos 85, 33300 Villaviciosa, Asturias, Spain;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    biogenic amines; tyramine; putrescine; enterococcus faecalis; enterococcus faecium; enterococcus durans; food safety;

    机译：生物胺酪胺腐胺粪肠球菌;粪肠球菌;杜兰肠球菌;食品安全;

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