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首页> 外文期刊>Food microbiology >The microbial safety of seaweed as a feed component for black soldier fly (Hermetia illucens) larvae
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The microbial safety of seaweed as a feed component for black soldier fly (Hermetia illucens) larvae

机译：海藻的微生物安全作为黑士兵飞的饲料组件（Hermetia illucens）幼虫

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摘要

Farmed insects can offer an environmentally sustainable aquafeed or livestock feed ingredient. The value of black soldier fly (Hermetia illucens) (BSF) larvae could be improved by enrichment in omega-3 through the dietary inclusion of seaweed. However, the industry practice of drying seaweed at low temperatures to retain nutritional properties may benefit the survival of human pathogenic bacteria, particularly if the seaweed has been harvested from contaminated water. Here we have demonstrated that E. coli and E. coli O157:H7 died-off in seaweed dried at 50 °C, although both were detected in the dried powder following 72 h storage. V. para-haemolyticus fell below the level of detection in stored seaweed after drying at ≥ 50 °C, but I. monocytogenes remained detectable, and continued to grow in seaweed dried at ≤60 °C. Therefore, drying seaweed at low temperatures risks pathogen carry-over into insects destined for animal feed. BSF larvae reared on an artificially contaminated seaweed-supplemented diet also became contaminated by all four bacteria present in the supplement. Water quality at seaweed harvesting sites, seaweed desiccation, and insect rearing practices, represent critical points where development of regulatory standards could achieve targeted control of pathogenic hazards.
机译：养殖昆虫可以提供环保的Aquafeed或牲畜饲料成分。通过欧米茄-3通过海藻的饮食来改善黑士兵飞（Hermetia illucens）（BSF）幼虫的价值。然而，在低温下干燥海藻的行业实践以保留营养特性可能会有利于人致病细菌的存活，特别是如果海藻已经从受污染的水中收获。在这里，我们证明了大肠杆菌和大肠杆菌O157：H7在50℃下在海藻中干燥，尽管在72小时后在干燥的粉末中检测到两者。 V.对β-溶血性低于≥50°C的储存海藻中的检测水平，但是I.单核细胞增生仍然可检测，并继续在≤60℃下生长在海藻中干燥。因此，在低温下干燥海藻风险将病原体随身携带成用于动物饲料的昆虫。 BSF幼虫在人工受污染的海藻补充饮食中饲养，也被补充中存在的所有四种细菌污染。海藻收获场地的水质，海藻干燥和昆虫饲养实践，代表了监管标准的发展可以实现对致病性危害的靶向控制的关键点。

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  • 来源
    《Food microbiology》 |2020年第10期|103535.1-103535.9|共9页
  • 作者

    Isobel Swinscoe; David M. Oliver; Robin Ornsrud; Richard S. Quilliam;

  • 作者单位

    Biological and Environmental Sciences Faculty of Natural Sciences University of Stirling Stirling FK9 4LA UK;

    Biological and Environmental Sciences Faculty of Natural Sciences University of Stirling Stirling FK9 4LA UK;

    Institute of Marine Research P.O. box 1870 Nordnes NO-5817 Bergen Norway;

    Biological and Environmental Sciences Faculty of Natural Sciences University of Stirling Stirling FK9 4LA 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

    BSF larvae; Food safety; Human pathogens; Listeria; Macroalgae; Sustainable food systems;

    机译：BSF幼虫;食品安全;人类病原体;listeria;宏观格子;可持续食品系统;

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