Application Progress of Food Safety Rapid Detection T echnology in Supervision
Jun Teng
School of engineering, Guangzhou College of Technology and Business
Abstract: At prent, China’s food safety supervision, inspection and management system has been initially established, which supervis all aspects of food production, processing and commodity circulation, but food safety problems still occur frequently. At prent, the food safety supervision and inspection system has not achieved all-round coverage in the aspects of edible agricultural products, bulk food, catering food, on-site manufacturing and lling food, etc. Therefore, it is necessary to quickly inspect food safety. This paper mainly discuss the application progress and existing problems of food rapid detection technology in China in recent years from veral detection methods, aiming at providing reference for the good development of food safety rapid detection technology. Keywords: Food safety; Rapid detection technology; Supervision; Application progress
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DOI: 10.47297/wspciWSP2516-252704.20210504
F ood safety has always been one of the issues that people pay clo attention
to. However, in recent years, food safety problems have occurred frequently, posing a rious threat to people’s lives and health, and indirectly having a bad influence on social development and economic growth. At prent, China’s food industry does not have strict standardization, with a large number and scattered characteristics. There is no comprehensive and systematic management system in the industry, which leads to the lack of legal awareness and lf-discipline awareness of people engaged in the food industry. At the same time, due to the large number of consumers and sales channels in the food industry, there are certain difficulties in comprehensive management and control. According to the analysis of frequent food safety problems in recent years, most of the food safety problems are due to substandard environmental protection and hygiene conditions, or the influence of additives, pesticides and illegal additives. Therefore, in order to comprehensively solve the food safety problems, it is necessary to carry out all-round supervision and inspection on all aspects of food production, processing,纸杯传水游戏规则
About the author: Jun Teng (1990-08), Male, Han, Anshan, Liaoning Province; Doctor; Lecturer; Food Safety Detection.
Application Progress of Food Safety Rapid Detection Technology in Supervision circulation and sales, and fundamentally put an end to food safety hazards, especially fresh foods with short shelf lif
e, so as to meet the requirements of rapid inspection of food safety.
1. Application Progress of Rapid Detection T echnology in Food Safety Management
(1) Colorimetry
Colorimetry refers to using the color of the tested food itlf, or the color after adding reagents, obrving with eyes, comparing the color depth of the solution, and measuring the concentration of the tested food in the solution with photometer. Colorimetry is highly intuitive, rapid and convenient, and it has absolute advantages in detecting large quantities of samples [1]. Commonly ud tools of colorimetry include color development quick test and quick test card, etc. Color rapid measurement technology relies on the color change of color reaction to visually analyze the tested object, and different color reaction is suitable for different tested objects. Chine food safety rearchers u the color reaction between ferrous ions and thymol blue to test trace iron in tea and flour. Recently, the Market Supervision Administration has relead a ries of rapid detection methods, among which it is mentioned that the color development and rapid detection technology can detect methanol in liquor, formaldehyde in water-soaked products, boric acid in food and so on. There are also some rapid color development technologies that u the inhibition of the tested object on the color develop
关于春节的开头ment reaction to detect, such as cholinestera-catalyzed hydrolysis of acetylcholine, the hydrolysis product produced reacts with toluic acid dithiodinitrate, and then a yellow substance is produced, and the absorbance of the object is measured to infer the activity of the enzyme. The quick test card is made by attaching the chromogenic reaction substrate to the test strip, and a large number of samples are screened and tested by the quick test card. However, there are many shortcomings in the application of colorimetry. Becau the color reaction is too dependent on the reaction conditions, it is easily affected by the reaction conditions in the detection process.
(2) Enzyme-linked immunosorbent assay
Enzyme-linked immunosorbent assay (ELISA) refers to the covalent combination of enzyme and antibody or anti-antibody, which can form enzyme-labeled complex, and then form enzyme-labeled antigen-antibody complex with corresponding antigen. The corresponding substrate can generate colored products after being catalyzed by enzyme, and the color depth has a certain correlation with the amount of detected substance in the sample. This method is easy to operate and suitable for rapid detection of food safety on the spot. Food safety rearchers have upgraded the enzyme-linked immunosorbent assay (ELISA) by using respon surface method, which can quickly and comprehensively detect food of animal
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origin [2]. Some scholars u indirect enzyme-linked immunosorbent assay to detect the concentration of walnut protein, and u double antibody sandwich method to detect allergens in milk, and the detection results have very high accuracy. The main problems of enzyme-linked immunosorbent assay (ELISA) are the specificity of antigen-antibody reaction, which requires the u of professional detection reagents and effective detection methods for different types of tested objects. Therefore, this method has not been widely ud in food safety detection, and if the antigen body of food is damaged during processing or pre-treatment, the accuracy of detection results will be greatly reduced.
(3) Colloidal immunochromatography
Chloroauric acid can polymerize under the action of reducing agent, thus generating a certain number of gold particles of different sizes, and a relatively stable and balanced colloidal state is formed under the influence of static electricity, so it is called colloidal gold. Colloidal gold will generate negative charge in weak alkali environment, and can be cloly combined with the positive charge group of protein molecule. This combination belongs to electrostatic combination type, and wi
ll not have too high influence on the biological activity of protein. Compared with enzyme-labeled immunoassay, enzyme-labeled antibody is linked by chemical coupling, which affects the activity of enzyme, so it can be ud in detection instead of enzyme-labeled antibody, and immunochromatography derived from colloidal gold can be easily made into a kit, which is suitable for rapid detection in the field. Colloidal immunochromatography is more and more widely ud in detecting various small molecular organic compounds in food. The problems of colloidal immunochromatography in the application process are similar to tho of enzyme-linked immunosorbent assay (ELISA), and this method us a single reagent in the determination process, which is difficult in quality monitoring and control. Generally, it can only be ud in qualitative detection, and both quantitative detection and nsitivity need to be strengthened.
(4) Electroanalyticalmethodes
Electrochemical analysis utilizes the electrochemical properties and changing rules of substances in the solution to analyze the metrological relationship between the measured substance and potential, conductance and current, and to detect the components qualitatively or quantitatively. In recent years, nanotechnology, surface modification technology and new material synthesis technology have made continuous progress and development, and the nsitivity and particularity of electrochemical
analysis have been significantly improved. Moreover, the applied electrochemical instruments have high miniaturization and intelligence, and are suitable for rapid on-site detection. However, becau there are many interference factors in the process of food safety detection, and the lectivity of electrochemical analysis is relatively poor, it has not been formally applied to the actual detection work at this stage.
Application Progress of Food Safety Rapid Detection Technology in Supervision
(5) Bioluminescence method
All biological cells contain a constant amount of ATP. The bioluminescence method us ATP relead during bacterial cell division. Under the catalysis of lucifera, luciferin will undergo oxidation reaction, thus emitting light. The intensity of luminescence can directly reflect the content of ATP, and then the total number of colonies can be estimated. The bioluminescence method is fast and easy to operate, and can reproduce the detection reaction. Scholars summarized the detection experience in recent years, optimized the detection conditions, and thus constructed the ATP bioluminescence detection technology for determining the total number of food bacteria. Under such conditions, the total number of bacteria can be reasonably controlled within the range of standard val
ues, the concentration of adenosine triphosphate has a direct correlation with the intensity of bioluminescence, and there is a good correlation between the detection results and the plate calculation results [3]. According to practical rearch, ATP bioluminescence method can also measure the disinfection effect of disinfectants by detecting the microbial quantity on the surface of disinfected food.
2. Prospects for the Development of Food Safety Rapid Inspection T echnology
(1) Focus on developing convenient, miniature and intelligent testing equipment.
购买基金Small testing instruments are suitable for rapid testing of food safety. Whether it is on-site inspection or applied in aerospace and military fields, small instruments can liberate space to the greatest extent, and have good stability and easy operation. With the improvement of science and technology, large-scale instruments are gradually transforming into intelligent micro-instruments. However, the reduction of the instrument model reprents the simplification of the structure, which will affect the nature and function of the instrument to a certain extent. Therefore, it is necessary to reduce the contradiction between miniaturization and functionality from the perspective of meeting the market demand, and miniaturize the instrument on the basis of ensuring the comprehensive dete
销售面试自我介绍ction function of the system [4]. For example, we can u ultra-micro spectral breadth, reduce the volume of the instrument, and u the optical fiber conduction function, etc.
(2) Improve the application of mathematical statistics and optimize the detection effect.
高清炮p图The nsitivity of the rapid detection method is not high, the detection range is narrow, and it lacks stability, and many detections need to be applied to tools such as test paper and detection kit, and the detection results can only be expresd by negative and positive results, and specific values cannot be given, which brings certain difficulties to the limit value evaluation. Therefore, it is necessary to apply
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the method of mathematical statistics in the detection work to comprehensively summarize and analyze the characteristics and change laws of variables.
3. Conclusion
At prent, China’s food safety rapid inspection technology is divided into many types, and has made initial progress, but there are still many shortcomings in the application process. Therefore, res
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earchers need to constantly sum up experience, innovate and upgrade the rapid inspection technology, study more convenient, fast, flexible and low-cost inspection technology, and promote the stable development of China’s food safety industry.
References
罗马的英文[1] Dong Zhenhua, Zhu Hanyun. “Innovative technical analysis of rapid food detection
”[J]. Guide to Food Safety, 2021,No.319(26):137+139.
[2] Cui Chaohui. “Discussion on the application practice of rapid detection technology
in food safety supervision” [J]. Guide to Food Safety, 2021,No.319(26):143-44. [3] Sun Shikun, Rui Wenjun, Sun Yan, Fu Lei. “Application status and develop-
ment of rapid detection technology of food safety” [J]. Guide to Food Safety, 2021,No.319(26):162-63.
[4] Xu Manfei, Zhang Liyan, Yin Liang. “Analysis of conventional technology
and quality safety control measures of food rapid detection” [J]. Food industry, 2021,No.97(8):88-88
