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首页> 外文期刊>Food microbiology >Application of phage therapy during bivalve depuration improves Escherichia coli decontamination
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Application of phage therapy during bivalve depuration improves Escherichia coli decontamination

机译：在双壳净化过程中应用噬菌体疗法可改善大肠杆菌的去污能力

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摘要

The present study investigated the potential application of the bacteriophage (or phage) phT4A, ECA2 and the phage cocktail phT4A/ECA2 to decrease the concentration of Escherichia coli during the depuration of natural and artificially contaminated cockles. Depuration in static seawater at multiplicity of infection (MOI) of 1 with single phage suspensions of phT4A and ECA2 was the best condition, as it decreased by -2.0 log CFU/g the concentration of E. coli in artificially contaminated cockles after a 4 h of treatment. When naturally contaminated cockles were treated in static seawater with single phage suspensions and the phage cocktail, similar decreases in the concentration of E. coli (～0.7 log CFU/g) were achieved. However, when employing the phage cocktail, a longer treatment time was required to obtain comparable results to those achieved when using single phage suspensions. When naturally contaminated cockles were depurated with phage phT4A in a recirculated seawater system (mimicking industrial depuration conditions), a 0.6 log CFU/g reduction of E. coli was achieved after a 2 h of treatment. When the depuration process was performed without phage addition, a 4 h treatment was necessary to obtain a similar decrease. By combining phage therapy and depuration procedures, a reduction in bivalves depuration period can be achieved for, thus decreasing the cost associated with this procedure and even enhance the quality and safety of depurated bivalves destined for human consumption.
机译：本研究调查了噬菌体（或噬菌体）phT4A，ECA2和噬菌体混合物phT4A / ECA2在降低天然和人工污染鸟蛤净化过程中降低大肠杆菌浓度方面的潜在应用。 phT4A和ECA2单噬菌体悬浮液在感染复数（MOI）为1的静态海水中净化是最佳条件，因为经过4小时后，人工污染的蛤中大肠杆菌浓度降低了-2.0 log CFU / g治疗。当用单一噬菌体悬浮液和噬菌体混合物在静态海水中处理自然污染的蛤时，大肠杆菌的浓度也有类似的降低（〜0.7 log CFU / g）。但是，当使用噬菌体混合物时，需要更长的处理时间才能获得与使用单一噬菌体悬浮液可比的结果。当在循环海水系统中用噬菌体phT4A对自然污染的蛤进行净化（模拟工业净化条件）时，处理2小时后，大肠杆菌减少0.6 log CFU / g。当在不添加噬菌体的情况下进行纯化过程时，必须进行4小时的处理才能获得类似的减少。通过结合噬菌体治疗和净化程序，可以缩短双壳类动物的净化时间，从而降低与该程序相关的成本，甚至可以提高供人食用的净化后的双壳类动物的质量和安全性。

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  • 来源
    《Food microbiology》 |2017年第2期|102-112|共11页
  • 作者

    Carla Pereira; Catarina Moreirinha; Luis Teles; Rui J.M. Rocha; Ricardo Calado; Jesus L. Romalde; Maria L. Nunes; Adelaide Almeida;

  • 作者单位

    Department of Biology & CESAM, University of Aveiro, Campus Universitario de Santiago, 3810-193, Aveiro, Portugal;

    Department of Biology & CESAM, University of Aveiro, Campus Universitario de Santiago, 3810-193, Aveiro, Portugal;

    Department of Biology & CESAM, University of Aveiro, Campus Universitario de Santiago, 3810-193, Aveiro, Portugal;

    Department of Biology & CESAM, University of Aveiro, Campus Universitario de Santiago, 3810-193, Aveiro, Portugal;

    Department of Biology & CESAM, University of Aveiro, Campus Universitario de Santiago, 3810-193, Aveiro, Portugal;

    Departamento de Microbiologia e Parasitologia, CIBUS-Facultad de Biologia, Universidade de Santiago de Compostela, Campus Vida s., 15782 Santiago de Compostela, Spain;

    CIIMAR/CIMAR - Centro de Investigacao Marinha e Ambiental, Rua dos Bragas, 289, 4050-123 Porto, Portugal;

    Department of Biology & CESAM, University of Aveiro, Campus Universitario de Santiago, 3810-193, Aveiro, Portugal;

  • 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

    Phages; Cockles; Cerastoderma edule; Food safety;

    机译：噬菌体鸟蛤;皮肤皮疹食品安全;

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