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首页> 外文期刊>Food microbiology >Temperature and water activity effects on production of T-2 and HT-2 by Fusarium langsethiae strains from north European countries
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Temperature and water activity effects on production of T-2 and HT-2 by Fusarium langsethiae strains from north European countries

机译：温度和水分活度对来自北欧国家的郎镰刀菌菌株生产T-2和HT-2的影响

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摘要

This study has examined the effect of ecophysiological factors, water activity (a_w, 0.995-0.90) and temperature (10-37 ℃), on the T-2 and HT-2 toxins production by Fusarium langsethiae. Two dimensional profiles for optimum and marginal conditions have been built for two strains from each of four northern European countries (UK, Norway, Sweden, Finland) on an oat-based medium. This showed that the optimum a_w and temperature conditions for T-2 + HT-2 production was between 0.98-0.995, and 20-30 ℃ respectively. Kruskal-Wallis analysis of ranks showed a statistically significant differences between the different a_w levels examined (P < 0.001) but no significant effect of the temperatures examined. The ratio of HT-2/T-2 was investigated and non-uniform distribution of HT-2 toxin was found under different ecological conditions. No statistically significant differences were found for the mean toxin production between strains from the different countries. Intra-strain differences in toxin production was only found for those from Finland (P-value = 0.0247). The growtho growth and toxino toxin conditions in relation to a_w x temperature have been constructed for the first time. This knowledge will be useful in developing prevention strategies to minimise T-2 and HT-2 toxin contamination by strains of F. langsethiae on important small grain cereals.
机译：这项研究调查了生态生理因素，水分活度（a_w，0.995-0.90）和温度（10-37℃）对蓝枯病镰刀菌产生T-2和HT-2毒素的影响。针对来自四个北欧国家（英国，挪威，瑞典，芬兰）中每个燕麦的两种菌株，在燕麦培养基上建立了最佳和边缘条件的二维分布图。这表明T-2 + HT-2生产的最佳温度和温度条件分别在0.98-0.995和20-30℃之间。等级的Kruskal-Wallis分析显示，所检查的不同aw水平之间存在统计学上的显着差异（P <0.001），但所检查的温度没有显着影响。研究了不同生态条件下HT-2 / T-2的比值，发现HT-2毒素的分布不均匀。在来自不同国家的菌株之间，平均毒素生产没有发现统计学上的显着差异。仅在芬兰发现毒素产生的菌株间差异（P值= 0.0247）。首次建立了与温度有关的生长/无生长和毒素/无毒素条件。这些知识将有助于制定预防策略，以最大程度地减少重要小谷物谷物上郎瑟氏杆菌菌株对T-2和HT-2毒素的污染。

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  • 来源
    《Food microbiology》 |2011年第3期|p.392-398|共7页
  • 作者

    A. Medina; N. Magan;

  • 作者单位

    Applied Mycology Group, Cranfield Health, Vincent Building, Cranfield University, Cranfield, Bedfordshire MK43 0AL, UK;

    Applied Mycology Group, Cranfield Health, Vincent Building, Cranfield University, Cranfield, Bedfordshire MK43 0AL, UK;

  • 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

    type a trichothecenes; fusarium; mycotoxins; ecological conditions;

    机译：输入木霉菌素;镰刀菌霉菌毒素;生态条件;

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