(1) Research on the rapid identification mechanism of food safety risk factors

        Taking chemical hazards and biological hazards in foods as research subjects, comprehensive immunoassay, nano-biosensing, near/mid-infrared spectroscopy, electrochemical analysis, surface-enhanced Raman analysis techniques, and new graphene complexes , peptide nanotubes, multidimensional nano-SERS chips and other signal amplification methods to study the effects of target components and characteristic targets on rapid recognition specificity and efficiency, systematically analyze the specific detection mechanism of rapid detection technology, and explore common biological and chemical properties. The basis of rapid detection methods provides theoretical support and technical support for the establishment and application of accurate, stable, convenient, efficient and rapid detection methods.

        (2) Study on Accurate Discrimination and Target Separation of Food Safety Risk Factors

        Taking the trace chemical hazards in foods as the main research object, comprehensive analysis is performed using novel enrichment materials such as metal frames, ionic liquids, multi-walled carbon nanotubes, and molecularly imprinted materials to study new enrichment materials for complex samples. The mechanism of trace adsorption and separation of trace pollutants and the matrix interference in complex sample pretreatments are established. A multi-target high-throughput separation and precise discriminant system for trace risk factors is established to identify the precise identification of chemical hazards. The high-throughput identification mechanism provides a theoretical basis for the development of precise quantitative techniques for risk factors and the development of targeted control technologies.

        (3) Basic research on food safety risk assessment

         Taking the important chemical hazards and biological hazards in food as the research object, comprehensively apply food safety testing technology, big data analysis technology, database construction technology and risk assessment and analysis technology, and focus on the migration of chemical and microbial risk factors in foods. Laws, data algorithms, and model establishment studies were conducted to analyze the influence of environmental factors on the existence and changing patterns of risk factors, and to gradually establish a basic database for the evaluation of major chemical and pathogenic microorganisms in major foods, and exposure assessment suitable for the dietary characteristics of China. The model provides technical support for national regulatory authorities to address food safety emergencies.