Biogenically proficient synthesis and characterization of silver nanoparticles employing marine procured fungi Aspergillus brunneoviolaceus along with their antibacterial and antioxidative potency,Biotechnology Letters

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Biogenically proficient synthesis and characterization of silver nanoparticles employing marine procured fungi Aspergillus brunneoviolaceus along with their antibacterial and antioxidative potency
Biotechnology Letters ( IF 2.0 ) Pub Date : 2020-09-17 , DOI: 10.1007/s10529-020-03008-7
Harsh Mistry ₁ , Rashmi Thakor ₁ , Chirag Patil ₁ , Jitendra Trivedi ₂ , Himanshu Bariya ₁

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Abstract Objectives To assess the extracellular synthesis of silver nanoparticles using marine derived fungi Aspergillus brunneoviolaceus with their antibacterial and antioxidant activities. Results The biosynthesis of silver nanoparticles was estimated by the change in color from light yellow to dark brown within 36 h as the reaction progressed. UV-Visible spectroscopy exhibited its stability at 411 nm; ATR-FTIR spectroscopy depicted the functional group responsible for its production; X-Ray Diffraction denoted its crystalline FCC structure resembling the peaks in XRD pattern, corresponding to [111], [200], [220], [311] and [222] planes; TEM imaging revealed its spherical morphology with the particle size ranging from 0.72 to 15.21 nm and Tauc’s plot analysis that disclosed its band gap energy as 2.44 eV that manifested the potential of AgNPs to be semiconductors. The characterization data henceforth, confirmed the efficient production of silver nanoparticles. The biosynthesized AgNPs expressed strong antibacterial activity against two Gram-positive and three Gram-negative bacteria. They also proved to possess higher antioxidative potentials by showing their potent radical scavenging activity against DPPH (2, 2-diphenyl-1-picrylhydrazyl). Conclusions The study unfolds the prospect for further utilization of this mycogenically synthesized AgNPs as antibacterial, antioxidative and anticancer agents. Graphic abstract

中文翻译：

使用海洋采购的真菌 Aspergillus brunneoviolaceus 及其抗菌和抗氧化效力的银纳米粒子的生物合成和表征

摘要目的评价海洋来源真菌Aspergillus brunneoviolaceus 在细胞外合成纳米银的过程及其抗菌和抗氧化活性。结果银纳米颗粒的生物合成通过随着反应的进行而在 36 小时内从浅黄色变为深棕色的颜色变化来估计。紫外可见光谱在 411 nm 处表现出稳定性；ATR-FTIR 光谱描绘了负责其产生的官能团；X 射线衍射表示其晶体 FCC 结构类似于 XRD 图中的峰，对应于 [111]、[200]、[220]、[311] 和 [222] 平面；TEM 成像显示其球形形态，粒径范围为 0.72 至 15.21 nm，Tauc 绘图分析显示其带隙能量为 2。44 eV 显示了 AgNPs 成为半导体的潜力。此后的表征数据证实了银纳米颗粒的有效生产。生物合成的 AgNPs 对两种革兰氏阳性菌和三种革兰氏阴性菌表现出很强的抗菌活性。通过显示其对 DPPH (2, 2-diphenyl-1-picrylhydrazyl) 的强效自由基清除活性，它们还被证明具有更高的抗氧化潜力。结论该研究展示了进一步利用这种真菌合成的 AgNP 作为抗菌、抗氧化和抗癌剂的前景。图形摘要生物合成的 AgNPs 对两种革兰氏阳性菌和三种革兰氏阴性菌表现出很强的抗菌活性。通过显示其对 DPPH (2, 2-diphenyl-1-picrylhydrazyl) 的强效自由基清除活性，它们还被证明具有更高的抗氧化潜力。结论该研究展示了进一步利用这种真菌合成的 AgNP 作为抗菌、抗氧化和抗癌剂的前景。图形摘要生物合成的 AgNPs 对两种革兰氏阳性菌和三种革兰氏阴性菌表现出很强的抗菌活性。通过显示其对 DPPH (2, 2-diphenyl-1-picrylhydrazyl) 的强效自由基清除活性，它们还被证明具有更高的抗氧化潜力。结论该研究展示了进一步利用这种真菌合成的 AgNP 作为抗菌、抗氧化和抗癌剂的前景。图形摘要

更新日期：2020-09-17

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