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>A polymeric microfluidic device integrated with nanoporous alumina membranes for simultaneous detection of multiple foodborne pathogens
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A polymeric microfluidic device integrated with nanoporous alumina membranes for simultaneous detection of multiple foodborne pathogens
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机译:集成了纳米多孔氧化铝膜的聚合物微流控设备,可同时检测多种食源性病原体
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摘要
Conventional biochemical methods for foodborne pathogen detection are time-consuming, labor-intensive and can only be used for single type bacteria detection with one sample. There is always an urgent need for fast, accurate and easy to handle devices for identification and monitoring of multiple foodborne pathogens at the same time. Herein, we present a non-biofouling polyethylene glycol (PEG) based microfluidic chip integrated with functionalized nanoporous alumina membrane for simultaneous electrochemical detection of two types of bacteria Escherichia coli O157:H7 and Staphylococcus aureus from the mixed samples. The experimental results demonstrated the specificity for target bacteria detection and the low cross-binding of non-target bacteria. The simultaneous detection of mixed bacteria sample of E. coli O157:H7 and S. aureus was also demonstrated. This sensor has a linear detection range from 102 CFU/mL to 105 CFU/mL with the limit of detection (LOD) around 102 CFU/mL.
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