Chinanews.com, Lanzhou, November 25 (Reporter Liu Xuemei) Gansu is an important production area for plateau summer vegetables and Chinese medicinal materials. To expand the scope of exports, it is necessary to trace the source to the end, strengthen the ability to detect pesticide residues at the grassroots level, and improve products while monitoring Quality, “focus on solving problems such as excessive heavy metals and pesticide residues.” Pang Guofang, an academician of the Chinese Academy of Engineering, said on the 24th.
In the 1990s, Pang Guofang and his team went to the Northwest for an inspection and found that because honey did not have a unified quality standard, they encountered export problems.
After retiring, he was attracted by the testing capabilities and intelligent level of the Lanzhou Institute of Food and Drug Inspection and Testing, and came to Lanzhou again to serve the export trade of Gansu with his research results.
In order to promote the development of inspection and testing technology and scientific research innovation, the Lanzhou Institute of Food and Drug Inspection and Testing cooperated with Pang Guofang to establish an academician expert workstation in August 2019.
Qiu Guoyu, president of the Lanzhou Institute of Food and Drug Inspection and Testing, said that the institute has been equipped with more than 920 various instruments and equipment such as ultra-high performance liquid chromatography, high performance liquid chromatography, atomic absorption spectrophotometer, and automatic microbial identification system. , In March of this year, the irradiated food inspection and testing capabilities were obtained, and 929 parameter inspection and testing capabilities were added in cosmetics, drinking water, food, etc., and the annual food and drug inspection capabilities reached more than 30,000 batches. At present, it has accumulated seven major areas 11031 products and parameter inspection capabilities.
High-throughput non-targeted screening technology and ternary fusion information technology are the research and development achievements accumulated by Pang Guofang's team for many years.
Pang Guofang said that the high-throughput non-targeted screening technology is based on high-resolution mass spectrometry to achieve high-speed and high-throughput screening of pesticide residues. On the basis of non-targeted high-throughput screening technology, ternary fusion information The technology realizes the effective combination of interdisciplinary analysis and detection technology, data information technology and geographic information technology, realizes the visual traceability of pesticide residue information on electronic maps, and explores a new model of pesticide residue detection big data application.
In order to improve the comprehensive risk monitoring plan for pesticide residues, the Lanzhou Institute of Food and Drug Inspection and Testing and Pang Guofang jointly developed a special project for comprehensive risk monitoring of pesticide residues in plateau summer vegetables to build a basic database of pesticide residues and a special project for pesticide residues risk monitoring of Chinese medicinal materials in Gansu Province to build a basic database of pesticide residues Special medium and long-term plans.
According to the plan, it will monitor the residue levels of no less than 30 commonly used fruit and vegetable varieties in Gansu Province and no less than 800 commonly used pesticides in the world, and the cumulative monitoring volume of samples in five years will be no less than 50,000 batches, and a comprehensive pesticide residue database will be established.
At present, this work has been carried out for one year. As of October 2020, technicians have learned and mastered high-throughput non-targeted technology, installed and debugged ternary fusion information technology, and collected 2000 batches of plateau summer vegetable samples in 2020. All completed.
Using technical means to carry out risk monitoring on pesticide residues in traditional Chinese medicinal materials grown in Gansu Province, and finally establish a high-throughput inspection and detection technology for more than 1,000 pesticide residues in Chinese medicines. The collection of Chinese medicines covers the whole country and targets more pesticide varieties (not less than 800 species) and Chinese medicinal materials (not less than 60 species), the cumulative monitoring volume of samples in 5 years is not less than 20,000 batches, and a basic database of pesticide residues has been established.
Qiu Guoyu said that the use of the academician expert team in the field of high-throughput detection of pesticide residues and chemical pollutants in food has domestic leading academic and research levels and complementary research results to develop pesticide residues and metabolites in humans. Analysis, research on the detection and application of pesticides and exogenous pollutants in Chinese medicinal materials, and the development and application of high-throughput detection technology for pesticides and exogenous pollutants in edible agricultural products (plateau summer vegetables). The results of the three scientific researches will be Gansu's food safety supervision work provides technical support to develop co-governance and sharing with countries along the "Belt and Road" in the field of agricultural food safety.
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