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E-mail
923597269@qq.com
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Phone
18925209261
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Address
Rongchang Industrial Park, Guanlan Street, Longhua New District, Shenzhen
Shenzhen Fenxi Instrument Manufacturing Co., Ltd
923597269@qq.com
18925209261
Rongchang Industrial Park, Guanlan Street, Longhua New District, Shenzhen
| With the continuous development of the social economy, people's living standards and health awareness are constantly improving. People are paying more and more attention to methods to improve food quality and reduce harmful substance residues in food. This is a good trend, but food safety inspection and testing is not a personal matter, it requires more efforts from qualified departments. Therefore, relevant departments should consciously undertake the important task of ensuring the quality and safety of food, improve the food safety testing system, strengthen the level of food safety testing technology, and work together with food producers to create a sky of food safety for consumers. | |
| 1. Relevant content of food inspection and testing | |
| The operational basis of food inspection consists of three aspects: sample collection and preservation, sample preparation and pretreatment, and method selection for food testing technology. | |
| The so-called sampling is a process of extracting samples from a whole (usually referring to a batch of goods) of a certain raw material or product, which is the basic step of chemical inspection. In this process, the selection of samples should follow the following principles, such as: the samples should have sufficient representativeness, the sampling method should be carefully selected and not arbitrary, the operation should be rigorous and standardized, external factors should be prevented from interfering with the samples, authenticity should be emphasized, and different scientific preservation methods should be adopted according to different situations. Only in this way can scientifically effective samples be taken and preserved, so as to obtain results that are close to the actual situation, and only such results are meaningful. | |
| The so-called preparation and pretreatment of samples are both operations taken to remove the parts and impurities that are not worth analyzing in the test sample, ensure that the analyzed sample is very uniform, and that the content of the analyte in the sample is at least higher than the detection limit of the analytical method. There is no essential difference between the two. Pre processing usually involves steps such as extraction, organic matter destruction (divided into dry method: ashing method and wet method: digestion method), precipitation, chromatography, dialysis, distillation, concentration and drying. Only in this way can unnecessary interfering substances be removed, and the relevant reaction phenomena of the object we need be expanded, thus obtaining a more reliable conclusion. So, the level of sample preparation and pre-treatment greatly affects the experimental conclusions. | |
| The selection of technical methods for food testing refers to the step of choosing an appropriate testing method based on specific circumstances before the experiment, which largely determines whether your experiment is "twice the result with half the effort" or "twice the result with half the effort". Generally speaking, chemical analysis methods have high accuracy, low sensitivity, and a relative error of 0.1%, and are used for the determination of constant components; The instrument analysis method has low accuracy, high sensitivity, and a relative error of about 5%, and is used for the determination of trace components; When conducting multiple sample measurements or parallel measurements for the same project, the average measurement speed is fast because there is no need to readjust the working conditions of the instrument for each measurement. If necessary, pre experimental methods can be used for comparison and selection. Only by comprehensively considering various factors such as detection limit and recovery rate can the most suitable method be selected to quickly, accurately, and economically draw experimental conclusions. This is what is called sharpening the knife without harming the chopping wood worker. | |
| The importance of food inspection and testing: | |
| (1) The importance of individuals: Food plays an important role in people's lives, work, and studies. The quality of food is related to the vital interests and physical and mental health of the people, and is a common concern of consumers and the whole society. Therefore, the importance of food testing for individuals is self-evident. As with the melamine milk powder incident that occurred a few years ago, if the relevant testing agencies had fulfilled their responsibilities truthfully, adopted scientific methods, and carefully sampled with precision instruments, how could they have failed to detect the existence of problematic milk powder, and how could they have allowed it to enter the market, resulting in the tragedy of infant deaths? From this, on the one hand, we can see that there are still many problems in the relevant testing of food safety in China, and the monitoring system still has loopholes; On the other hand, it further highlights the importance of food inspection in China. The author hereby calls on relevant testing departments to take action, assume their responsibilities, make commitments to everyone's life, health and safety, and prevent unqualified products such as ham sausages with clenbuterol and seafood with harmful chemicals from entering the market again! | |
| (2) The importance of food testing for production enterprises and the food industry: Food testing plays an important technical support role in the evaluation of food product quality and safety, market supervision, and product trade, and plays an important role in ensuring the quality and safety of food products and improving the overall level of the food industry. Testing institutions should abide by their responsibilities, analyze and study the products submitted for testing through precise instruments, scientific methods, and standardized operating procedures, draw objective and truthful conclusions, and then provide feedback to relevant production enterprises. Only in this way can relevant enterprises effectively correct their products, analyze the problems, take relevant measures to improve product quality, and use quality advantages to occupy a place in the market, establish their own brand advantages, and ultimately obtain objective economic profits. So it is unnecessary for some testing institutions to be afraid of offending certain large enterprises due to the detection of substandard product quality. Objectively reflecting the test results is not only the mission of the testing institution, but also helps related enterprises improve their products. More importantly, if we persist in this way for a long time, we will create a good market environment for the food industry, thereby improving the quality of food to a higher level. Why not do it. | |
| (3) The importance of food inspection and testing to society and the state: Food inspection and testing are functions entrusted by the state. Only by ensuring product quality can we provide technical support for the country's economic and social development, and play a positive role in further improving the quality level of our products. Because after all, society and the country are composed of individuals, non-standard and unqualified food inspection may lead to a decline in people's physical fitness, resulting in a decrease in work efficiency and a slow pace of social development. From this perspective, improving the level of food inspection is of great significance to society. | |