The present study describes synthesis, characterization and antibacterial application of oxidized sodium alginate (OSA)-zinc oxide (ZnO) hybrid nanostructures (OSA-ZnO). In continuation to our previous study on oxidized guar gum (OGG)-ZnO (OGG-ZnO) nanocomposite, in the present study we have chosen OSA to understand the role of polysaccharide charge type in designing the antibacterial material. The nanomaterial has been characterized using UV-visible, FTIR, XRD, SEM and TEM analyses. The nanostructure has shown crystalline nature having hexagonal phase with preferred (101) orientation, while TEM image indicated that the material has ~6 nm particle size. It exhibited very good antibacterial performance against Bacillus subtilis (B. subtilis), Cellulomonas cellulans (C. cellulans), Staphylococcus typhi (S. typhi), and Escherichia coli (E. coli) bacterial strains, ZOI for B. subtilis, C. cellulans, S. typhi, and E. coli being 22, 18, 19.5 and 18.5 mm respectively. Under identical conditions, pure ZnO showed significantly lower ZOI for the corresponding bacterial strains (14, 12.5, 12 and 13.5 mm respectively), while native SA and OSA did not exhibit any biological activity.

译文

本研究描述了氧化海藻酸钠 (OSA)-氧化锌 (ZnO) 杂化纳米结构 (OSA-ZnO) 的合成,表征和抗菌应用。为了继续我们先前对氧化瓜尔胶 (OGG)-ZnO (OGG-ZnO) 纳米复合材料的研究,在本研究中,我们选择了OSA来了解多糖电荷类型在设计抗菌材料中的作用。已使用UV-可见光,FTIR,XRD,SEM和TEM分析对纳米材料进行了表征。纳米结构显示了具有优选 (101) 取向的六方相的结晶性质,而TEM图像表明该材料具有约6 nm的粒度。对枯草芽孢杆菌 (B. subtilis),纤维素单胞菌 (C.Celluloans),伤寒葡萄球菌 (S. typhi) 和大肠杆菌 (E. coli) 细菌菌株,ZOI对枯草芽孢杆菌,C.Celluloans,S. typhi,大肠杆菌分别为22、18、19.5和18.5毫米。在相同条件下,纯ZnO对于相应的细菌菌株 (分别为14、12.5、12和13.5毫米) 显示出显著较低的ZOI,而天然SA和OSA不显示任何生物活性。

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