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From the "root", the biological detection technology for meat traceability refuses to "sell dog meat with sheep's head"

 Last Update: 2022-05-25
 Source: Internet
 Author: User

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[ Chemical Machinery Equipment Network Industry News ] Meat is a very important part of the human body's dietary structure.

Of course, apart from the element of nutritional value, meat is also a very important part of the food culture of various countries.
Generally speaking, while different meats have different nutritional values, their tastes also have certain differences.
Therefore, different meats have different tastes.
Prices and the resulting cooking methods also vary
.
From the perspective of ordinary people, the meats that we are exposed to more on a daily basis are pork, beef, mutton and chicken
.

Under normal circumstances, the public can choose meat according to their own taste needs and economic conditions, but when it comes to selling meat, there has always been a lot of chaos in the market, among which adulterated meat is quite representative
.

What is adulterated meat? Simply put, it is shoddy, for example, adding low-priced meat such as pork or duck into beef and mutton fillings for profit, or mixing processed pork pieces into beef and sheep products and selling them together so that the Pork is sold for the price of beef and mutton, or it is sold with low-priced meat mixed with high-priced meat
.

　　Although, compared with other food contamination issues, this kind of adulterated meat mixed with low-priced meat does not have an obvious impact on the edible safety of the food itself, but considering other substances that may be used in the adulteration process or The situation of secondary pollution and from the interests of consumers, adulterated meat is still a very important issue in the food safety of animal-derived food, and it is also one that is difficult to detect and screen quickly, accurately and efficiently
.

　　But difficulty does not mean that it cannot be achieved.
First of all, China has formulated very perfect relevant laws and regulations on the quality and safety of meat and meat products, so that there is already a very clear standard for the definition of problematic products
.
On this basis, various biological detection technologies continue to play an important role in this field
.
Among them, the emergence of DNA metabarcoding technology has more effectively solved the problem of meat component identification
.

　　We know that DNA carries the genetic information necessary to synthesize RNA and proteins and is therefore an ideal means of identifying the species of a sample, but analyzing DNA for biological analysis requires addressing the issues of precision and speed
.
The DNA metabarcoding technology combines DNA barcoding technology and high-throughput sequencing technology, so it has the characteristics of high-throughput, high precision, and fast speed
.
In theory, as long as a sufficiently reliable DNA barcode database is established, meat and its products can be accurately identified through this technology, and the composition and component sequencing analysis of 96 samples will only require less than 6 hours
.

　　In fact, this technology has other room for development in food safety, such as assisting the customs to complete the composition determination of imported canned meat or helping different meat products complete the traceability work
.
However, there are also blind spots in this technology.
For example, the standard DNA barcoding currently used for taxonomic identification of animals and plants is not fully suitable for the application of environmental samples
.

　　But in any case, it is certain that the development of biological detection technology is helping consumers to stay away from the consumption trap of "selling dog meat" in a more scientific way, and is creating a better environment for us to eat safely
.

　　Original title: From the "root" to the biological detection technology of meat traceability, rejecting "selling dog meat with sheep's head"

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