超疏水涂层可减少人类细菌食源性病原体附着在用于新鲜农产品收获和收获后包装的木材上

IF 4.5 1区 农林科学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Zachariah Vice , William de Florio , Joseph Masabni , Luis Cisneros-Zevallos , Alejandro Castillo , Chris R. Kerth , Mustafa Akbulut , Thomas M. Taylor
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引用次数: 0

摘要

据报道,与其他食品接触材料相比,木材更难保持卫生状态,但在农产品包装和零售中使用木材却需要努力降低微生物病原体污染和附着的风险。本研究对应用于新鲜食用农产品处理的木材的氟化硅烷的防污能力进行了鉴定,使木材具有超疏水性,减少细菌病原体的附着。松木和橡木立方体试样表面用 1%(重量比)硅烷处理或不处理。对木材进行硅烷处理后,两种病原体的强附着细胞与松散附着细胞的比例均显著下降(P <0.01)。沙门氏菌的附着与木材处理有关;经硅烷处理的木材与未处理的木材(3.72 ± 0.67 log CFU/cm2)相比,强附着细胞的比例较低(1.87 ± 1.24 log CFU/cm2)。经硅烷处理的木材在长时间暴露后,单核细胞增多症杆菌的强附着细胞显著减少,接种后 8 小时内从 7.59 ± 0.14 降至 5.27 ± 0.68 log CFU/cm2。显微分析表明,硅烷处理增加了两种木材的表面粗糙度,导致木材表面出现超疏水性,从而减少了病原菌的强烈附着。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Superhydrophobic coatings reduce human bacterial foodborne pathogen attachment to woods used in fresh produce harvest and postharvest packing

Wood is reportedly more difficult to maintain in hygienic condition versus other food contact materials, yet its use in produce packing and retail warrants efforts to reduce the risk of microbial pathogen contamination and attachment. This study characterized antifouling capabilities of fluorinated silanes applied to wood used in fresh edible produce handling to render the wood superhydrophobic and less supportive of bacterial pathogen attachment. Pine and oak cubic coupon surfaces were treated with 1% (w/w) silane or left untreated. Treated and untreated coupons were inoculated with Salmonella enterica or Listeria monocytogenes and held to facilitate pathogen attachment for 1, 4, or 8 h. Silane treatment of wood produced significant reductions in the proportions of strongly attaching cells for both pathogens versus loosely attaching cells (P < 0.01). Salmonella attachment demonstrated a dependency on wood treatment; silane-treated wood supported a lower fraction of strongly adhering cells (1.87 ± 1.24 log CFU/cm2) versus untreated wood (3.72 ± 0.67 log CFU/cm2). L. monocytogenes demonstrated significant declines in strongly attaching cells during extended exposure to silane-treated wood, from 7.59 ± 0.14 to 5.27 ± 0.68 log CFU/cm2 over 8 h post-inoculation. Microscopic analysis demonstrated silane treatment increased the surface roughness of both woods, leading to superhydrophobic conditions on wood surfaces, consequently decreasing strong attachment of pathogenic bacteria.

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来源期刊
Food microbiology
Food microbiology 工程技术-生物工程与应用微生物
CiteScore
11.30
自引率
3.80%
发文量
179
审稿时长
44 days
期刊介绍: Food Microbiology publishes original research articles, short communications, review papers, letters, news items and book reviews dealing with all aspects of the microbiology of foods. The editors aim to publish manuscripts of the highest quality which are both relevant and applicable to the broad field covered by the journal. Studies must be novel, have a clear connection to food microbiology, and be of general interest to the international community of food microbiologists. The editors make every effort to ensure rapid and fair reviews, resulting in timely publication of accepted manuscripts.
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