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首页> 外文期刊>Food microbiology >Biocontrol of aflatoxigenic Aspergillus parasiticus by native Debaryomyces hansenii in dry-cured meat products
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Biocontrol of aflatoxigenic Aspergillus parasiticus by native Debaryomyces hansenii in dry-cured meat products

机译：通过天然Debaryomyces汉森氏菌在干腌肉产品中的生物管菌寄生虫

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摘要

Dry-cured meat products, such as dry-cured ham or dry-fermented sausages, are characterized by their particular ripening process, where a mould population grows on their surface. Some of these moulds are hazardous to the consumers because of their ability to produce mycotoxins including aflatoxins (AFs). The use of native yeasts could be considered a potential strategy for controlling the presence of AFs in dry-cured meat products. The aim of this work was to evaluate the antagonistic activity of two native Debaryomyces hansenii strains on the relative growth rate and the AFs production in Aspergillus parasiticus. Both D. hansenii strains significantly reduced the growth rates of A. parasiticus when grown in a meat-model system at different water activity (a(w)) conditions. The presence of D. hansenii strains caused a stimulation of AFs production by A. parasiticus at 0.99 a(w). However, at 0.92 a(w) the yeasts significantly reduced the AFs concentration in the meat-model system. The relative expression levels of the aflR and aflS genes involved in the AFs biosynthetic pathway were also repressed at 0.92 a(w) in the presence of both D. hansenii strains. These satisfactory results were confirmed in dry-cured ham and dry-fermented sausage slices inoculated with A. parasiticus, since both D. hansenii strains significantly reduced AFs amounts in these matrices. Therefore, both tested D. hansenii strains could be proposed as biocontrol agents within a HACCP framework to minimize the hazard associated with the presence of AFs in dry-cured meat products.
机译：干燥的肉类产品，如干燥的火腿或干发酵的香肠，其特征在于它们的特殊成熟过程，其中模具群在其表面上生长。这些模具中的一些是对消费者危害，因为它们能够生产霉菌毒素，包括黄曲霉毒素（AFS）。本土酵母的使用可以被认为是控制干燥肉类产品中AFS的存在的潜在策略。这项工作的目的是评估两种天然Debaryomyces汉森西菌株的拮抗活性，患有芦荟治的相对生长速度和AFS生产。 D.汉森菌菌株在不同水活性（A（W））条件下在肉类模型系统中生长时，寄生菌菌株显着降低了A.寄生虫的生长速率。 D. Hansenii菌株的存在导致A.寄生在0.99A（W）的寄生物质的刺激。然而，在0.92A（w）时，酵母显着降低了肉类模型系统中的AFS浓度。在D.Hansenii菌株的情况下，还在0.92A（w）中抑制了AFS生物合成途径的AFLR和AFL基因的相对表达水平。这些令人满意的结果在干燥的火腿和干发酵的香肠切片中被占据了A. Parasiticus，因为D.汉森病株两者都显着降低了这些基质中的AFS量。因此，可以在HACCP框架内提出测试的D.汉森菌菌株作为生物防治药物，以最大限度地减少与干腌肉产品中的AFS存在相关的危害。

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  • 来源
    《Food microbiology》 |2019年第9期|269-276|共8页
  • 作者

    Peromingo Belen; Andrade Maria J.; Delgado Josue; Sanchez-Montero Lourdes; Nunez Felix;

  • 作者单位

    Univ Extremadura Fac Vet Sci Food Hyg & Safety Meat & Meat Prod Res Inst Avda Ciencias S-N Caceres 10003 Spain;

    Univ Extremadura Fac Vet Sci Food Hyg & Safety Meat & Meat Prod Res Inst Avda Ciencias S-N Caceres 10003 Spain;

    Univ Extremadura Fac Vet Sci Food Hyg & Safety Meat & Meat Prod Res Inst Avda Ciencias S-N Caceres 10003 Spain;

    Univ Extremadura Fac Vet Sci Food Hyg & Safety Meat & Meat Prod Res Inst Avda Ciencias S-N Caceres 10003 Spain;

    Univ Extremadura Fac Vet Sci Food Hyg & Safety Meat & Meat Prod Res Inst Avda Ciencias S-N Caceres 10003 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

    Aflatoxins; Aspergillus parasiticus; Debaryomyces hansenii; Dry-cured meat products;

    机译：黄曲霉毒素;Aspergillus parasiticus;debaryomyces hansenii;干腌肉制品;

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