Food safety testing

Food safety testing is to detect harmful substances in food according to national indicators, mainly detecting some harmful and toxic indicators, such as heavy metals, aflatoxins, etc. An important aspect of food science and engineering is the introduction and application of chemical unit operations, and the development of food engineering unit operations, thereby promoting the development of the food industry towards large-scale, continuous, and automated directions.

detection technology

Chromatographic technique

Section 2: Analysis of Pesticide Residues in Food Testing and Key Technology Sharing: Establishing Standard Curves and Gas Chromatography Detection.

Food safety testing

Chromatography technology is essentially a physical and chemical separation method, which means that when two phases are in relative motion, different substances have different distribution coefficients (or adsorption coefficients) in the two phases (stationary phase and mobile phase), and the separation of each substance is achieved through continuous distribution (i.e., multiple cycles of dissolution, volatilization, adsorption, and desorption of components between the two phases). Chromatography technology has developed maturely, with advantages such as high detection sensitivity, high separation efficiency, high selectivity, low detection limit, small sample dosage, and convenience and speed. It has been widely used in safety testing of the food industry. The commonly used methods in chromatography include gas chromatography, high-performance liquid chromatography, thin layer chromatography, and immunoaffinity chromatography.

spectral technology

Food safety testing

Spectral analysis is a method established by utilizing the emission and absorption of electromagnetic radiation by substances, as well as the interaction between substances and electromagnetic radiation. It is based on spectral measurement through the inherent relationship and manifestation between radiation energy and the composition and structure of substances. Spectral analysis is a non-destructive and rapid detection technique with low analysis costs. Among them, Raman spectroscopy, infrared spectroscopy, near-infrared spectroscopy, and fluorescence spectroscopy are widely used in food safety testing.

biotechnology

Biological detection technology has developed rapidly in recent years and has attracted much attention in food testing. Due to the fact that most food comes from natural organisms such as animals and plants, it naturally has the ability to distinguish substances and react. The biotechnology that utilizes biological materials to react with chemical substances in food for detection purposes has shown great potential in food inspection, with advantages such as specific biological recognition function, high selectivity, accurate, sensitive, specific, trace and fast results. The widely used methods include enzyme-linked immunosorbent assay, PCR technology, biosensor technology, and biochar technology.

rapid detection

Food safety testing

The hidden dangers and problems of food safety are becoming increasingly serious. With the promulgation and implementation of the Food Safety Law of the People's Republic of China, people's attention and concern for food safety are constantly increasing, and food safety supervision has become a new focus of attention. There have been many food safety incidents in China, such as the 2010 Qingdao chive poisoning incident, the 2011 clenbuterol incident, and so on. These food safety issues directly threaten people's physical health and life safety. The Food Safety Law of the People's Republic of China explicitly states that food safety supervision should be implemented throughout the entire process from farmland to dining tables, which poses a major challenge for government law enforcement agencies.