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Extraction of Graphene Nanostructures from Colocasia esculenta and Nelumbo nucifera Leaves and Surface Functionalization with Tin Oxide: Evaluation of Their Antibacterial Properties.
Chemistry - A European Journal ( IF 3.9 ) Pub Date : 2020-03-28 , DOI: 10.1002/chem.202000590 Anu N Mohan 1 , Manoj B 1
Chemistry - A European Journal ( IF 3.9 ) Pub Date : 2020-03-28 , DOI: 10.1002/chem.202000590 Anu N Mohan 1 , Manoj B 1
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Expeditious evolution of antimicrobial resistance in recent years has been identified as a growing concern by various health organizations around the world. Herein, facile and environmentally benign production of highly antibacterial carbonaceous nanomaterials from Colocasia esculenta and Nelumbo nucifera leaves is reported. After carbonization and oxidative treatment, smaller graphene domains are formed in Colocasia esculenta derivatives, whereas larger sheetlike structures are observed in the case of Nelumbo nucifera . Smaller particle size makes quantum confinement effects more prominent, as is evident in fine‐tuning of the photoluminescence emission after each stage of treatment. The influence of precursor materials on the antibacterial properties of the nanosystems is also demonstrated. When microbiocidal activity was tested against model bacteria Pseudomonas aeruginosa , the nanocomposite derived from Colocasia esculenta leaves showed higher activity than the antibiotic drug clarithromycin (control) with a measured zone of inhibition of 40±0.5 mm. This is one of the highest values reported in comparison with plant‐based carbon–silver nanosystems. Quantitative analysis revealed that the nanocomposite obtained from Colocasia esculenta leaves has antimicrobial efficacy equivalent to those of commercial antibiotic drugs and is able to eradicate bacteria at much lower concentrations than that obtained from Nelumbo nucifera leaves.
中文翻译：
从香芋和莲子叶中石墨烯纳米结构的提取和氧化锡的表面功能化：评价其抗菌性能。
近年来，抗菌药耐药性的迅速发展已被世界各地的各种卫生组织所关注。在此，报道了从香芋（Colocasia esculenta）和莲子莲（Nelumbo nucifera）叶片容易地且在环境上无害地生产高度抗菌的碳质纳米材料。经过碳化和氧化处理后，七叶香芋的衍生物中形成了较小的石墨烯结构域，而对于莲lum则观察到较大的片状结构。。较小的粒径使量子限制效应更加突出，这在每个处理阶段之后的光致发光发射的微调中就很明显。还证明了前体材料对纳米系统抗菌性能的影响。当测试针对模型细菌铜绿假单胞菌的杀微生物活性时，源自香芋（Colocasia esculenta）叶片的纳米复合材料显示出比抗生素克拉霉素（对照）更高的活性，并具有40±0.5 mm的抑制区域。与基于植物的碳银纳米系统相比，这是报告的最高值之一。定量分析表明，从Colocasia esculenta获得了纳米复合材料树叶具有与市售抗生素相当的抗菌功效，并且能够以比从莲子叶得到的浓度低得多的浓度消灭细菌。
更新日期：2020-03-28
中文翻译：
从香芋和莲子叶中石墨烯纳米结构的提取和氧化锡的表面功能化：评价其抗菌性能。
近年来，抗菌药耐药性的迅速发展已被世界各地的各种卫生组织所关注。在此，报道了从香芋（Colocasia esculenta）和莲子莲（Nelumbo nucifera）叶片容易地且在环境上无害地生产高度抗菌的碳质纳米材料。经过碳化和氧化处理后，七叶香芋的衍生物中形成了较小的石墨烯结构域，而对于莲lum则观察到较大的片状结构。。较小的粒径使量子限制效应更加突出，这在每个处理阶段之后的光致发光发射的微调中就很明显。还证明了前体材料对纳米系统抗菌性能的影响。当测试针对模型细菌铜绿假单胞菌的杀微生物活性时，源自香芋（Colocasia esculenta）叶片的纳米复合材料显示出比抗生素克拉霉素（对照）更高的活性，并具有40±0.5 mm的抑制区域。与基于植物的碳银纳米系统相比，这是报告的最高值之一。定量分析表明，从Colocasia esculenta获得了纳米复合材料树叶具有与市售抗生素相当的抗菌功效，并且能够以比从莲子叶得到的浓度低得多的浓度消灭细菌。
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