As a natural nutritious food, egg is rich in proteins, amino acids, minerals, vitamins and other nutrients needed by the human body. However, the rich nutrients in egg make it a breeding ground for bacteria. The pathogenic bacteria of egg-borne infectious diseases such as Salmonella, Escherichia...

Detection of hygiene indicator Escherichia coli (E. coli) is usually employed for assessing the hygiene and safety of water and food supply. Herein, an L-tryptophan (L-Trp)-based fluorescent and colorimetric dual-channel sensing system was developed for detection of live E. coli. The fluorescent...

Rapid detection of Salmonella in food has always been a research hotspot, which can contaminate milk. In this study, a novel method that combines streptavidin (SA)-modified gold nanoparticles (AuNPs) and dynamic light scattering (DLS) technology for ultrasensitive detection of Salmonella was...

Cronobacter spp. are important opportunistic foodborne pathogens in powdered infant formula (PIF). In this study, a sensitive and specific assay was developed for fluorescent and colorimetric detection of Cronobacter spp. in PIF samples by using ligase chain reaction and rolling circle...

Cronobacter sakazakii is a foodborne, emerging opportunistic pathogen that causes severe bacteremia, necrotizing enterocolitis, and sepsis with a mortality rate of up to 80%. In this study, we developed a simple and sensitive fluorescent turn-off aptasensor with rolling circle amplification assay...

A novel tantalum pentoxide nanoparticle-electrochemically reduced graphene oxide nanocomposite-modified glassy carbon electrode (Ta₂O₅-ErGO/GCE) was developed for the detection of oxytetracycline in milk. The composition, structure and morphology of GO, Ta₂O₅, and Ta₂O₅-ErGO were characterized by...

Estrogens and estrogen mimics have been proved to be possible carcinogenic risks to human health and have drawn extensive attention in the fields of food safety. In this work, a thiol-ene click strategy was proposed for synthesis of a novel β-cyclodextrin-functionalized covalent organic...

In 2020, the COVID-19 pandemic broke out globally, and cold-chain food has become the key point of the task to prevent the coronavirus from spreading within the city/region or beyond. Using information tools like establishing a national cold-chain traceability management platform to control the...

Objective: To establish a method for the determination of 32 kinds of antibiotic residues in fish intestinal content by high performance liquid chromatography-tandem mass spectrometry. Methods: It was determined that the chromatographic column was ACQUITY UPLC BEH C18 (2.1 mm×100 mm, 1.7 μm),...

This study for the first time reported a receptor based chemiluminescence immunoassay for analysis of tetracyclines. During the experiments, the gene of TetR protein was transformed into Rosetta-gami(DE3) to express a receptor, and its recognition mechanism for 5 tetracyclines was studied by using...