Sudan Red, Clenbuterol, Melamine ... In recent years, various types of "poisons" have appeared frequently, which has repeatedly impacted consumers' trust in food safety. The problem of food safety has become a haze lingering in the hearts of the people. Are there accurate, fast and convenient detection technologies that can help us stay away from these toxic and harmful foods?
Through nearly 7 years of research, Professor Yu Xiaoping, vice president of China Institute of Metrology and his team have successfully developed more than 40 products such as automatic hollow fiber membrane microextraction instrument, multi-residue rapid detection test strips and kits, breaking the market for such products. Foreign monopoly situation.
Recently, the achievement titled "Research and Application of Key Technologies for Rapid Detection of Toxic and Harmful Substances in Agricultural Products" won the first prize of the 2013 "Science and Technology Inspection Award" by the General Administration of Quality Supervision, Inspection and Quarantine
A few cents of dipsticks are more sensitive and convenient for home use
"The chromatographic, spectroscopy, mass spectrometry, and other instrument confirmation techniques we used before, although the test results are accurate and reliable, are time-consuming, costly, and demanding." Professor Yu Xiaoping said that the traditional detection methods are mostly extensive sampling inspections. Certain risks.
In 2011, the "Clenbuterol Incident" almost dragged down China's largest meat processing enterprise. The key reason was that it was impossible to achieve comprehensive, accurate and rapid detection of raw pig raw materials.
The earliest investment by the project team was the development of rapid detection technology for Clenbuterol. They have developed a variety of beta-stimulant rapid test kits and test strips to make it possible to detect live pigs one by one, and have successively applied them in the 2008 Olympic Games, 2010 Asian Games and World Expo, and controlled the access to the Olympic Village from the source The safety of the food ensures that athletes will not ingest stimulants by eating pork and other foods.
Today, the project team has signed a special supply agreement with Shuanghui Group for rapid testing of test strips and kits to help companies detect the safety and quality of meat products at the first time and on site.
With the research efforts of scientific researchers, the original test required a professional precision instrument of 400,000 to 500,000 yuan, and now a dime test strip can be easily obtained; the original need to use solvent extraction, chemical reaction The complex process of comparing with the standard curve one to two days later can now produce results within a few minutes; the tests that used to require professional technicians can now be easily understood by ordinary people.
This simpler, more convenient and faster detection method can also enter the ordinary family in the future. "If people don't worry about the vegetables and other foods they bought, they can cut a small piece and put it on a test strip to get the result." Professor Yu painted such a picture.
The project supports a safety barrier for food safety
Food is food to safety first.
The Sanlu milk powder incident in 2008 caused people to lose confidence in the safety of domestic fresh milk and dairy products, causing huge economic losses and negative social impacts.
The project team has developed melamine rapid detection ELISA kits and test strips, and signed long-term purchase and sales contracts with large dairy companies such as Mengniu and Yili, effectively guaranteeing the safety of related products.
Pathogenic microbial contamination is one of the main sources of food safety risks in the catering industry. The food-borne pathogenic microorganism LAMP detection kit developed by the project team can help quickly analyze and determine the source of contamination, and monitor and control the food safety status from the source.
"Like the safety problem of drinking water that broke out in an elementary school some time ago, after knowing the viral nucleic acid in the water, we can develop a corresponding rapid detection technology based on its nucleic acid sequence, and then we can detect this indicator in the future."
According to Professor Yu, the rapid detection of genetically modified foods that have received considerable attention in recent years is also being developed. The project can also be applied to ecological security and environmental security in the future, such as the detection of invasive alien species and the protection of rare species unique to China.
The project has realized an output value of 215 million yuan
Artificial antibody preparation for multi-residue detection, hollow fiber membrane screening and preparation, new labeling technology development, visualization, and traceable loop-mediated isothermal amplification ... A key technology has been broken through. At the same time, the development of the entire agricultural food safety testing industry is also constantly advancing.
It is reported that the research results of the project have been industrialized. In the past three years, it has produced and sold more than 20,000 kits of various types, more than 20 million test strips, and more than 1,000 sets of testing instruments. The cumulative output value is 215 million yuan. The profit increased by 43.04 million yuan, and increased year by year.
The product won the bid for food safety inspection projects in more than 20 provinces and cities across the country, and has been applied to the production and quality monitoring of more than 10 large food processing companies such as Shuanghui, Yurun, Yili and New Hope.
In the traditional school-enterprise cooperation model, "University scientific research personnel unilaterally provide R & D products, and enterprises are reluctant to try to produce new products in order to save costs." This can neither guarantee the safety of the inspected products nor promote the development of the enterprise. .
Dean Technology Co., Ltd., which cooperates with the R & D team, achieved annual sales of 48 million yuan last year. According to the contract, 10% of its profits are used as R & D funds to support the team to continuously develop more advanced rapid detection technologies and products. The professors of the R & D team also serve as technical directors of the company to supervise production operations.
"This is a new type of development model." Professor Yu said. Now it seems that the new development model of "production-learning-research" in line with the sustainable development concept is being accepted by more and more enterprises.
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