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。在我们之前对氧化瓜尔豆胶(OGG)-ZnO(OGG-ZnO)纳米复合材料的研究继续进行的同时,在本研究中,我们选择OSA来了解多糖电荷类型在设计抗菌材料中的作用。纳米材料已使用紫外可见光,FTIR,XRD,SEM和TEM分析进行了表征。纳米结构显示出具有六方相且具有优选(101)取向的晶体性质,而TEM图像表明该材料具有〜6 nm的粒径。它对枯草芽孢杆菌(B.subtilis),纤维素纤维梭菌(C.cellulans),伤寒葡萄球菌(S. typhi)和大肠杆菌(E.coli)细菌菌株ZOI表现出非常好的抗菌性能。纤维素,伤寒沙门氏菌和大肠杆菌分别为22、18、19.5和18.5毫米。在相同条件下,纯ZnO对相应的细菌菌株(分别为14、12.5、12和13.5mm)显示出明显较低的ZOI,而天然SA和OSA没有任何生物活性。

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