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首页> 外文期刊>Materials science & engineering >Calcined marine coral powders as a novel ecofriendly antimicrobial agent
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Calcined marine coral powders as a novel ecofriendly antimicrobial agent

机译：煅烧海洋珊瑚粉作为新型环保抗菌剂

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摘要

In this study, natural waste of marine corals was calcined to prepare an antimicrobial agent. Energy-dispersive X-ray fluorescence spectroscopy showed that the major element and compound of calcined corals were Ca and CaO, respectively, while X-ray photoelectron spectroscopy revealed the occurrence of more than one oxygen species (O-1s) on the surface of calcined corals, which was ascribed to the presence of MgO. Scanning electron microscopy imaging showed that calcined corals had a rough surface and an irregular shape, and the particle size distribution indicated that the average particle size of the calcined corals was 7.3 mu m. The calcined corals exhibited large zones of inhibition against gram-positive (Staphylococcus aureus) and gram-negative (Escherichia coil) bacteria as well as a fungus (Penicillium sp.), in the antimicrobial tests using well diffusion method. Notably, as a membrane-active and species-specific agent, pronounced antimicrobial activity for calcined corals was observed against S. aureus. Our newly developed bioactive calcined corals could be the potential antimicrobial agents in medical, biological, and food packaging applications.
机译：在这项研究中，对海洋珊瑚的自然废物进行了煅烧，以制备抗菌剂。能量色散X射线荧光光谱表明，煅烧珊瑚的主要元素和化合物分别为Ca和CaO，而X射线光电子能谱显示煅烧过的珊瑚表面存在一种以上的氧（O-1s）。珊瑚，这归因于氧化镁的存在。扫描电子显微镜成像显示煅烧的珊瑚具有粗糙的表面和不规则的形状，并且粒度分布表明煅烧的珊瑚的平均粒度为7.3μm。在使用孔扩散法进行的抗菌试验中，煅烧的珊瑚对革兰氏阳性（金黄色葡萄球菌）和革兰氏阴性（大肠埃希氏菌）细菌以及真菌（青霉菌）表现出较大的抑制作用。值得注意的是，作为一种具有膜活性和物种特异性的试剂，已观察到煅烧珊瑚对金黄色葡萄球菌具有明显的抗菌活性。我们新开发的具有生物活性的煅烧珊瑚可能会在医疗，生物和食品包装应用中成为潜在的抗菌剂。

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