1. Identification and traceability of risk substances in the production, processing and storage of goat milk and mutton:
Goat milk and mutton are the dominant agricultural product resources in Shaanxi Province. With the rapid development of industry, it is urgent to carry out the research on accurate analysis and detection methods and quality control of risk substances. Associate Professor Jia Wei cooperated with China Academy of inspection and quarantine Sciences and Shaanxi Institute of product quality supervision and inspection, combined with his temporary work experience in the dairy products and beverage supervision and Management Office of Xi'an food and Drug Administration (December 2018 to December 2019), using metabonomics method around the whole industry chain of breeding, production, processing and storage, The authenticity Traceability Method of raw milk was established and published in Journal of agricultural and food chemistry; Based on the fragmentation mechanism of mass spectrometry, a non directional screening method for pesticides and their metabolites in raw milk was developed; The reason of low sensitization and high absorption rate of goat milk protein was analyzed by proteomics; A method for identifying and tracing the origin of prohibited flavorings in dairy products was established by using the method of flavor omics, which was published in food chemistry; A data independent collection method was constructed to realize rapid screening of antibiotics and their metabolites in goat milk and mutton. It was published in food chemistry and won the second prize of the 14th excellent academic paper of Natural Science in Shaanxi Province; 福利电影在线观看免费版高清_哪款手机裸机手感好_1000禁止片免费网站., protein identification and functional annotation were carried out after mutton irradiation processing by proteomics method. The differential expression proteins and their main biological processes were analyzed, and the relationship between differential proteins and irradiation odor was discussed, which was published in food chemistry; In this paper, the lipid changes and transformation mechanism of mutton with different processing methods were studied by multi group method, which was published in food chemistry. At present, 27 papers have been published as the first / corresponding author.
2. Study on liquor flavor omics
福利电影在线观看免费版高清_哪款手机裸机手感好_1000禁止片免费网站., visited liquor production enterprises in Maotai town for many times, and completed the study on the mechanism of liquor irradiation ripening by using the flavor omics method, and revealed the formation mechanism of flavor substances and the elimination law of risk substances during liquor aging; Together with fan Zibian and Du'an, the research progress of liquor component analysis based on chromatography-mass spectrometry was reviewed. The authenticity detection of liquor, the separation and preparation of aroma components and structure analysis, the establishment, application and future development direction of high sensitivity identification and traceability of trace substances based on mass spectrometry were systematically introduced. The research work has an important guiding role in liquor identification, quality control and product development. Two studies were published in food chemistry.
3. The mechanism of selenium assimilation in tea plants
As a powerful grasp of poverty alleviation, the radiation effect of selenium rich tea on targeted poverty alleviation gradually appears. 福利电影在线观看免费版高清_哪款手机裸机手感好_1000禁止片免费网站., Associate Professor Jia Wei has made new progress in the proteome research of selenium enriched tea. He has studied and explored the main secondary metabolites and the biological process of inflammatory reaction in the process of selenium transformation of tea plants, and clarified the synthesis pathway of organic selenium in green tea, The understanding of "soil selenium plant" cycle was enhanced. This work was published in the Journal of agricultural and food chemistry. The research on selenium assimilation mechanism and nutrition of tea plants has promoted the transformation and upgrading of tea industry in our province.
4. Provide technical standards for evaluation of food rapid detection products for Shaanxi national games
In order to ensure the food quality and safety of the 14th National Games, the College of food, with its discipline characteristics, actively connects with Xi'an market supervision and Administration Bureau and other government departments, In accordance with the principle of "comparing international standards, national standards and domestic advanced local standards and taking them more stringent than others", we should achieve the objectives of stricter indicators, better management, less risk and higher reliability, Associate Professor Jia Wei and senior engineer Fan Cheng of Shaanxi Provincial Quality Inspection Institute organized and formulated the general technical specification for evaluation of food rapid detection products for the 14th National Games and the 11th Paralympic Games and the 8th Special Olympics Six local standards, such as "db6101 / ssy S.J 005-2020 for the 14th National Games of the 10th Paralympic Games and the 8th Special Olympics for food rapid detection (fluorescence immunochromatography) product evaluation technical specifications", this work fills in the blank of the classification and evaluation standards of rapid detection methods in China, and makes the evaluation standards of fast detection products systematic and systematic, It has been fully affirmed by Shaanxi provincial market supervision bureau and Xi'an market supervision administration bureau. In addition, the "Shaanxi Province food safety local standard shenxianye Liangfen" is also being formulated according to the plan.