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首页> 外文期刊>Journal of Microbiology, Biotechnology and Food Sciences >EXTRACELLULAR SYNTHESIS OF ZINC OXIDE NANOPARTICLES USING ACINETOBACTER SCHINDLERI SIZ7 AND ITS ANTIMICROBIAL PROPERTY AGAINST FOODBORNE PATHOGENS
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EXTRACELLULAR SYNTHESIS OF ZINC OXIDE NANOPARTICLES USING ACINETOBACTER SCHINDLERI SIZ7 AND ITS ANTIMICROBIAL PROPERTY AGAINST FOODBORNE PATHOGENS

机译：辛氏梭菌SIZ7胞外合成氧化锌纳米粒子及其对食品致病菌的抑菌性能

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摘要

The present study focuses on the microbial synthesis of zinc oxide nanoparticles (ZnO NPs) and evaluating the antimicrobial property on foodborne pathogens. The bacterial strain, Acinetobacter schindleri SIZ7 was isolated from the waste filling area of Sivakasi, Tamil Nadu, India. The biogenic synthesis of ZnO NPs was carried out at room temperature and under suitable, eco-friendly environment using culture supernatant of A. schindleri. The physico-chemical properties exhibited by the biogenic ZnO NPs were characterised using UV-Visible Spectrophotometry, Energy dispersive X-ray spectroscopy (EDS), High Resolution Transmission Electron Microscopy (HRTEM), Fourier Transformed Infrared spectroscopy (FTIR) and Thermogravitometric Analysis (TGA). The synthesized ZnO NPs are polydispersed and spherical in shape. The antimicrobial activity of ZnO NPs was investigated against foodborne pathogens, Staphylococcus aureus (MTCC 96), Escherichia coli (MTCC 739), Vibrio parahaemolyticus (MTCC 451) and Salmonella enterica (MTCC 9844). The prepared ZnO NPs exhibited strong antimicrobial activity against E. coli and S. enterica with a minimum inhibitory concentration of 100μg ml-1. Thus, the bacterial strain Acinetobacter schindleri SIZ7 could be used for simple, extracellular, non-hazardous and efficient synthesis of antimicrobial ZnO NPs.
机译：本研究的重点是氧化锌纳米颗粒（ZnO NPs）的微生物合成以及对食源性病原体的抗菌性能。从印度泰米尔纳德邦Sivakasi的垃圾填埋区分离出了菌株Achintobacter schindleri SIZ7。 ZnO NPs的生物合成是在室温下，在合适的，环境友好的环境下，使用链球菌的培养上清液进行的。使用紫外可见分光光度法，能量色散X射线能谱（EDS），高分辨率透射电子显微镜（HRTEM），傅立叶变换红外光谱（FTIR）和热重分析（TGA）对生物型ZnO NP表现出的理化性质进行了表征）。合成的ZnO NPs是多分散的，球形。研究了ZnO NPs对食源性病原体，金黄色葡萄球菌（MTCC 96），大肠杆菌（MTCC 739），副溶血性弧菌（MTCC 451）和肠沙门氏菌（MTCC 9844）的抗菌活性。制备的ZnO NPs对大肠杆菌和小肠链球菌具有很强的抗菌活性，最低抑菌浓度为100μgml-1。因此，细菌菌株schindleri schindleri SIZ7可用于简单，细胞外，无危险和有效地合成抗菌ZnO NP。

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