A fluorescent film sensor for high‐performance detection of Listeria monocytogenes via vapor sampling
Rongrong Huang,
Meiqi Li,
Dehui Lin,
Yangtao Shao,
Congdi Shang,
Qianqian Liu,
Guijun Liu,
Nan Li,
Rong Miao,
Haonan Peng,
Yanli Tang,
Yu Fang
Affiliations
Rongrong Huang
Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education) School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an China
Meiqi Li
Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education) School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an China
Dehui Lin
Shaanxi Engineering Laboratory for Food Green Processing and Safety Control College of Food Engineering and Nutritional Science Shaanxi Normal University Xi'an China
Yangtao Shao
Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education) School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an China
Congdi Shang
Department of Food Safety, College of Food Science and Engineering Northwest A&F University Shaanxi China
Qianqian Liu
Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education) School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an China
Guijun Liu
Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education) School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an China
Nan Li
Shaanxi Engineering Laboratory for Food Green Processing and Safety Control College of Food Engineering and Nutritional Science Shaanxi Normal University Xi'an China
Rong Miao
Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education) School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an China
Haonan Peng
Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education) School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an China
Yanli Tang
Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education) School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an China
Yu Fang
Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education) School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an China
Abstract Foodborne Listeria monocytogenes poses serious threats to public health. Fast and sensitive detection of the pathogen at the point of contamination is thus crucial to halt the spread of bacteria‐related diseases. Herein, we report for the first time a fluorescent film sensor to detect the biomarker of L. monocytogenes, 3‐hydroxy‐2‐butanone. The sensor demonstrated unprecedented sensing performance for the analyte with a detection limit lower than 0.05 mg/m3, response time less than 1 s, full reversibility, and excellent selectivity. Further study showed that the sensor can be used to monitor the growth of L. monocytogenes with much‐improved sensitivity. The superior performance of the sensor is ascribed to the specific binding, efficient charge transfer emission, and porous adlayer structure of the specially designed sensing fluorophore‐based film. Our work paves the way to develop a portable detector to meet the needs for on‐site and real‐time detection of foodborne pathogens.
