矿用岩石废弃物作为革兰氏阳性菌抗菌剂的研究

IF 2.2 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Geomicrobiology Journal Pub Date : 2023-07-03 DOI:10.1080/01490451.2023.2229835

Osama A. Al-Bedak, Samia El-Helaly, A. A. Saleh, E. Ahmed, M. A. Moneim, Mostafa R. Abukhadra

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引用次数: 0

摘要

摘要本研究收集了埃及Abu Tartur磷矿的开采白云石废弃物样本。通过x射线衍射(XRD)和扫描电镜(SEM)对样品进行热分解，得到MgO/CaO混合物。本研究利用氧化镁/氧化钙复合制剂作为蜡样芽孢杆菌、金黄色葡萄球菌和表皮葡萄球菌的抗菌剂。抑菌实验表明，MgO/CaO组合对蜡样芽孢杆菌、金黄色葡萄球菌和表皮葡萄球菌具有较好的抑菌效果。对这3株细菌的最低抑菌浓度(MIC)均为1.0µg/mL。吖啶橙图有助于解释死细胞的高发生率，并有效地记录了MgO/CaO对细菌生长的影响，用于本研究。综上所述，氧化镁/氧化钙组合具有合成简单、成本低、释放率低、抗菌活性优异等优点，是一种非常有意义的细菌消毒候选材料。

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Utilization of Mining Rock Wastes as Antibacterial Agents Against Gram Positive Bacteria

Abstract In this investigation, samples of mining dolomite wastes were collected from Abu Tartur phosphate mines, Egypt. The samples were thermally decomposed to MgO/CaO mixture as evidenced by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The MgO/CaO combination mixture was utilized in this study as an antibacterial agent against Bacillus cereus, Staphylococcus aureus, and Staphylococcus epidermidis. Antibacterial experiments have revealed that the MgO/CaO combination was more effective against Bacillus cereus, Staphylococcus aureus, and Staphylococcus epidermidis. For the three bacterial strains, the minimum inhibitory concentration (MIC) of the tested mixture was found to be 1.0 µg/mL. Acridine Orange pictures, which helped to explain the high occurrence of dead cells, and were utilized effectively to record the effect of MgO/CaO, which was employed in this investigation on the bacterial growth. Taking into consideration, MgO/CaO combination was found to be very interesting candidate material for bacterial disinfection due to its simplicity of synthesis, low cost, low release rate, and as excellent antibacterial activity.

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来源期刊

Geomicrobiology Journal 环境科学-地球科学综合

CiteScore

4.80

自引率

8.70%

发文量

审稿时长

3.3 months

期刊介绍： Geomicrobiology Journal is a unified vehicle for research and review articles in geomicrobiology and microbial biogeochemistry. One or two special issues devoted to specific geomicrobiological topics are published each year. General articles deal with microbial transformations of geologically important minerals and elements, including those that occur in marine and freshwater environments, soils, mineral deposits and rock formations, and the environmental biogeochemical impact of these transformations. In this context, the functions of Bacteria and Archaea, yeasts, filamentous fungi, micro-algae, protists, and their viruses as geochemical agents are examined. Articles may stress the nature of specific geologically important microorganisms and their activities, or the environmental and geological consequences of geomicrobiological activity. The Journal covers an array of topics such as: microbial weathering; microbial roles in the formation and degradation of specific minerals; mineralization of organic matter; petroleum microbiology; subsurface microbiology; biofilm form and function, and other interfacial phenomena of geological importance; biogeochemical cycling of elements; isotopic fractionation; paleomicrobiology. Applied topics such as bioleaching microbiology, geomicrobiological prospecting, and groundwater pollution microbiology are addressed. New methods and techniques applied in geomicrobiological studies are also considered.