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首页> 外文期刊>Food microbiology >Attachment of different Salmonella serovars to materials commonly used in a poultry processing plant
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Attachment of different Salmonella serovars to materials commonly used in a poultry processing plant

机译：将不同的沙门氏菌血清型附着到家禽加工厂常用的材料上

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摘要

Salmonella can adhere to poultry and food contact surfaces and persist to cause diseases. Adhesion of Salmonella Sofia (n = 14), S. Typhimurium {n = 6), S. lnfantis (n = 3) and S. Virchow (n = 2) to Teflon~®, stainless steel, glass, rubber and polyurethane were assayed using epifluorescence microscopy. Surface free energies of bacteria and materials were calculated using contact angle values and interfacial free energy between isolates and materials determined. Surface roughness of the materials was analysed using atomic force microscopy. S. Sofia isolates adhered in higher numbers (P ＜ 0.05) to all materials compared to other serovars. The mean number of cells of S. Sofia isolates attaching to Teflon~® were significantly higher (P ＜ 0.05) compared to all materials except stainless steel (P ＞ 0.05). Mean roughness values ranged from 82.26 nm (Teflon~®) to 1.34 nm (glass). Correlations between the apolar component of the surface free energy of materials (γ_S~(LW) and bacterial adhesion (R~2 = 0.80), and between (γ_S~(LW) and the surface roughness of the materials (R~2 = 0.71) were found. Materials more positive in interfacial free energies had the highest number of adhering bacteria. Generalised surface property measurements were found to be useful in characterising Salmonella attachment but the degree of variability in results suggests that other factors, such as flagella or membrane proteins, could also contribute.
机译：沙门氏菌会粘附在禽类和食物接触的表面，并持续引起疾病。沙门氏菌（n = 14），鼠伤寒沙门氏菌（n = 6），沙门氏菌（n。3）和沙门氏菌（n。2）对特氟龙，不锈钢，玻璃，橡胶和聚氨酯的粘附力使用落射荧光显微镜分析。使用接触角值和确定的分离物与材料之间的界面自由能来计算细菌和材料的表面自由能。使用原子力显微镜分析材料的表面粗糙度。与其他血清型相比，S。Sofia分离株对所有材料的粘附率更高（P ＜0.05）。与除不锈钢外的所有材料相比，附着在Teflon®上的S. Sofia分离株的平均细胞数要高得多（P ＜0.05）。平均粗糙度值在82.26 nm（特氟隆）至1.34 nm（玻璃）之间。材料表面自由能的非极性组分（γ_S〜（LW）与细菌附着力（R〜2 = 0.80）之间的相关性以及（γ_S〜（LW）与材料的表面粗糙度（R〜2 = 0.71）之间的相关性界面自由能更强的材料具有最多的粘附细菌，发现通用的表面性质测量可用于表征沙门氏菌的附着，但结果的可变程度表明其他因素，例如鞭毛或膜蛋白，也可以做出贡献。

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  • 来源
    《Food microbiology》 |2009年第8期|853-859|共7页
  • 作者

    T.W.R. Chia; R.M. Goulter; T. McMeekin; G.A. Dykes; N. Fegan;

  • 作者单位

    Food Science Australia, Brisbane, Queensland, Australia School of Agricultural Science, University of Tasmania, Hobart, Tasmania, Australia;

    Food Science Australia, Brisbane, Queensland, Australia School of Molecular and Microbial Sciences, University of Queensland, Brisbane, Queensland, Australia;

    School of Agricultural Science, University of Tasmania, Hobart, Tasmania, Australia;

    Food Science Australia, Brisbane, Queensland, Australia;

    Food Science Australia, Brisbane, Queensland, Australia;

  • 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

    surface roughness; physicochemical surface parameters; AFM; salmonella; attachment to materials; interfacial free energy;

    机译：表面粗糙度;理化表面参数;原子力显微镜沙门氏菌;附件材料;界面自由能;

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