echemi logo
Product
  • Product
  • Supplier
  • Inquiry
    Home > Food News > Food Articles > Detection of chemical pollutants in agricultural products: to ensure the safety of the tip of the tongue.

    Detection of chemical pollutants in agricultural products: to ensure the safety of the tip of the tongue.

    • Last Update: 2020-09-19
    • Source: Internet
    • Author: User
    Search more information of high quality chemicals, good prices and reliable suppliers, visit www.echemi.com
    For cooks and housewives, "pesticide residues" are the most important thing to care about when buying and cooking. In fact, through the development of nearly ten years, China has established a better quality assurance system for agricultural products. The most stringent standards, the strictest regulations, the harshest penalties, the most serious accountability. Among them, testing technology is to ensure the safety of our table important scientific and technological support.
    there was such a group of people who quietly built a safe food wall for us behind our backs. Over the past ten years, the research team led by Wang Jing, a researcher at the Institute of Agricultural Quality Standards and Testing Technology of the Chinese Academy of Agricultural Sciences, has continuously overcome the technical bottleneck of quality and safety testing of agricultural products and made a series of important breakthroughs.
    project team after more than ten years of systematic research and technological innovation, through the study of nano-sensitive bionic recognition technology, signal amplification chemical luminescence immunity technology, low-carbon environmental protection high-volume sample pre-treatment technology and other key technologies, developed 25 kinds of rapid detection methods and products, creating more than 20 Covering more than 400 kinds of chemical pollutants confirmed detection methods, formed 15 national/industry/group standards, achieved a series of typical chemical pollutants in agricultural products in the high sensitivity, high-volume accurate identification and confirmed detection, and nationwide demonstration and promotion of applications, achieved remarkable results. In the 2016 Beijing Science and Technology Awards, the project won the first prize.
    is it so difficult to detect chemical contaminants?
    food safety is related to the national economy, people's livelihood and social stability, by the government and consumers concerned. China's annual food quality and safety incidents caused by the huge economic losses.
    " chemical pollutants are still an important factor affecting the quality and safety of food in China. Wang Jing said that agricultural products as the source of food, not only in the production process of agricultural products after the treatment of insects and drugs formed by agricultural veterinary drug residues, in the production environment passively adsorbed polycyclic aromatic hydrocarbons and other environmental pollutants, as well as the growth and microbial organisms and the formation of various metabolic derivatives, coupled with agricultural products have vivid characteristics, completely dependent on large-scale laboratory instrument testing will seriously restrict the quality and safety of agricultural products supervision.
    " research and development suitable for agricultural production, consumption habits of agricultural products quality and safety testing technology, in order to truly achieve the origin of quasi-out, market access, in order to provide people with safe food. Wang Jing said.
    simple pesticide residue detection, but it is not simple. Wang Jing told reporters that different kinds of agricultural products are very different, "so even if a pesticide residue is detected, its method may not be applicable to all agricultural product substings."
    In addition, due to the complexity of agricultural farming links, the use of pesticides, veterinary drugs and other agricultural inputs and environmental pollution may cause chemical pollutant residues, therefore, agricultural product safety testing often need to detect up to dozens or even hundreds of kinds of chemical pollutant residues in the same agricultural products.
    " Because the price of agricultural products is relatively low, each additional test link, will increase the price of agricultural products to a certain extent, so the chemical pollutant residue detection in agricultural products relative to other products in the chemical pollutant residue detection in addition to considering the reliability of the method, but also to consider the cost of testing methods, no doubt also increased the difficulty of chemical pollutant residue detection in agricultural products. "
    a way to solve the problem of residual detection once and for all?"
    "This is a very ideal idea!" Wang Jing said, "Different chemical pollutant residues often need to use different detection methods, so far, it has not been possible to achieve a way to solve all the residue detection problems of agricultural products once and for all." However, with the development and application of new materials and new technologies, portable, fast and accurate multi-class pollutant detection methods will better solve the problem of residue detection of agricultural products. More
    20 sets of chemical pollutant residue detection technology system have been constructed
    it is understood that the traditional detection methods include two aspects, namely, the traditional pre-treatment methods and the traditional analytical methods. Wang Jing said that traditional pre-treatment techniques, including liquid extraction technology, layering purification technology and so on, still play an important role in the detection of chemical pollutants in complex systems, but these pre-treatment technology steps are relatively cumbersome, solvent consumption is large, pollution of the environment.
    how to improve the specificity, ease of operation and reduce solvent consumption of traditional pre-treatment technology has always been the research direction of researchers. Wang Jing said.
    At present, China still has some technical bottlenecks that are difficult to break through in the rapid detection and corrogical technology of typical chemical pollutants such as pesticides and additives, veterinary drugs, prohibited additives and environmental pollutants, such as the lack of accurate and stable commercialized pesticide rapid detection products and veterinary drugs, prohibited The shortage of product types for rapid detection of add-ons leads to the inability to achieve rapid and efficient identification of typical chemical pollutants, the absence of highly selective sample pre-treatment technology leads to serious interference with complex substitums, and the incomplete coverage of chemical pollutant corrobetation technology and its methods and limited standards leads to the full risk monitoring of the quality and safety of agricultural products.
    In research and development, the project team encountered the biggest technical challenge is how to improve the stability and sensitivity of rapid test kits, test notes, such as antigen antibody reactions, marker enzyme coloring and Rumino chemical luminescence reactions are easily affected by pigment, protein, fat and other factors in fruit and vegetable or meat egg and milk samples.
    " In response to this problem, we have added different sample substations in the process of screening antibodies, so that cell strains that are well resistant to substring interference are screened from the beginning, so that when the antibodies are prepared react with chemical contaminants, they can be well resistant to the interference of the sample substation. Wang Jing said.The
    project team carried out systematic research on the interference of the substitline and the key factors affecting competitive sensitivity, made a good breakthrough, developed a chemical luminescent core sensitivity formula, and developed an enzyme-linked immuno kit, gold standard test strip, chemical luminescent kit that can quickly detect agricultural veterinary drugs and prohibited addeds.Based on the principle of enzyme inhibition, the
    project team developed the pesticide multi-residual speed measurement technology, systematically optimized the core formula, constructed a rapid measurement technology that can quickly screen organophosphorus and amino methylate pesticides, and developed a series of molecular imprinting identification materials, which have similar functions to antibodies, can be tailored, have good specificity and stability, can quickly and accurately identify chemical pollutants in agricultural products.
    In addition, on the basis of the existing laboratory high sensitivity detection technology, for low content in agricultural products, extraction and separation of chemical pollutants, developed a modular sample extraction purification unit, so that chemical pollutants of different nature can be very good from the complex fruit and vegetable agricultural product substation, built more than 20 sets of agricultural veterinary drug residues, prohibited added substances, environmental pollutants certification testing technology system, and some of the technology into national standards or agricultural industry standards.
    Can also detect pesticide residues at home
    Now, some medical kits or testing equipment such as early pregnancy test notes, blood glucose meters and other products have been able to let people at home on the use and judgment of the results. Similarly, the project team developed enzyme suppression methods and their products, which are simple to operate and can be used in homes, farmers' markets, etc. for on-site use to determine whether vegetables and fruits contain organic phosphorus and amino methamphetamine pesticide residues.
    Up to now, the team has developed a variety of agricultural and veterinary drug kits and test notes, not only in China's breeding base, farmers' markets, circulation links, large supermarkets, enterprises and institutions and other departments to promote the application, but also have home equipment, can be on-site to achieve typical pesticides, veterinary drugs, prohibited addeds and other residues of rapid detection.
    according to the introduction, the project research and development of a series of rapid testing products and confirmed testing methods have been in 31 provinces and cities in the country's leading enterprises, quality inspection agencies, research institutes and breeding bases, such as more than 1000 units to promote the application of China's agricultural products, market access, risk detection and control, rapid emergency disposal and other aspects played an important role. It has greatly improved the research level of typical chemical pollutant detection technology in China, promoted the market share of domestic fast inspection products, broken the foreign monopoly and reduced the cost.
    In addition, the formation of method standards and limited standards effectively make up for the shortcomings of China's agricultural product quality and safety standards system, accelerate the pace of china's agricultural product quality and safety standardization, improve the level of agricultural product quality and safe production, promote the healthy development of China's fruits and vegetables, meat, poultry, eggs and milk industries, in order to achieve the quality and safety control of agricultural products from farmland to the table provides an important technical support.
    This article is an English version of an article which is originally in the Chinese language on echemi.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to service@echemi.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

    Contact Us

    The source of this page with content of products and services is from Internet, which doesn't represent ECHEMI's opinion. If you have any queries, please write to service@echemi.com. It will be replied within 5 days.

    Moreover, if you find any instances of plagiarism from the page, please send email to service@echemi.com with relevant evidence.