"Guttering oil", a term that should have been used in sanitation work, is now more connected to the people's table, allowing everyone to talk about "oil" changes.

"Irrigation oil" rapid detection of performance is done? What is the problem with standard oil testing? When reporters tried to find the answer, they found that if the "board" was completely hit by the standard flaw of the inspection, it was actually flawed.

From the perspective of ensuring food safety, testing and downstream supervision should have been the most end-of-line. Only from a technical point of view, it is not possible to fundamentally solve the problem of how much damage “disinfection oil” has on the human body and whether it will flow back to the table.

Industry experts also appealed to the reporter of the "Scientific Times" that safe food does not rely on supervision, let alone detect it. The key is to have a complete food safety responsibility system and a strict accountability system.

Where is the detection difficult?

Some experts pointed out that because of the high technical difficulty in the “oil production” inspection, scientifically feasible inspection methods have not yet been established at home and abroad, and the testing standards are still not clear, which has brought difficulties for supervision.

The official response seems to confirm this statement, and the introduction of the "drainage oil" inspection method is on its way. According to Xinhua News Agency's September 18 news, in accordance with the uniform deployment of the State Council's Food Safety Commission, the Ministry of Health is organizing relevant units and industry experts to accelerate the demonstration of the "ditch oil" inspection method developed by the relevant technical institutes.

In response, Liu Qingyi, deputy dean of the Beijing Academy of Science and Technology and member of the Beijing Food Safety Committee, told the Scientific Times reporter that the difficulty in the so-called “drainage oil” testing is that the existing testing indicators are for edible purposes. The "vegetable oil," and "flood oil," in its broadest sense, is a collective name for various types of inferior oils that are recycled and used, and it is impossible to prescribe standards for food in question.

Second, compliance with the standard is not necessarily not "drainage oil." At present, the detection of edible oil is usually based on 9 indicators such as acid value, benzopyrene, and pesticide residues. Detection and counterfeiting will always be games for cats and rats. If only these 9 indicators are detected, criminals will be subject to targeted technical means to deal with them. Even if it is “oil waste”, it may achieve the qualification of surface indicators. Scientifically speaking, even if no hazardous substances are found, it does not indicate that new or potentially harmful substances are not present in the qualified samples. However, it indicates that the existing testing indicators are applicable to the detection of “ditch oil” and counterfeiting of edible oils. The behavior has been inadequate.

The standard is to "double-edged sword"

The reporter was informed that Beijing’s research work on “drainage oil” detection technology has already begun. The Beijing Physical and Chemical Analysis and Testing Center and related departments jointly carried out related research on "drain oil" testing technology. Lang Shuang, an associate researcher at the center, told this reporter that because of its complexity and particularity, “dig oil” should be determined by a series of index systems.

The Beijing Food Safety Monitoring Center has screened more than 80 technical inspection items that may be involved in “drain oil”. It has announced four categories including polycyclic aromatic hydrocarbons, cholesterol, electrical conductivity, and specific gene composition that can be used to investigate “drain oil”. The effective indicator.

As far as testing standards are concerned, Liu Qinglu introduced that the detection and prevention of “ditch oil” itself is a technical means. For example, when animal fat is mixed in, it changes when it is heated at high temperature, and the source of vegetable oil is not a single source. There will be changes in electrical conductivity during processing.

However, he also emphasized that the safety issues of various foods show that the testing standards cannot solve all problems once and for all. Even if the standards are introduced, they should continue to enrich and improve the standards for possible problems, making it difficult for counterfeiters to sell fakes. Break through the technology prevention and control system.

He also said that the standard is to "double-edged sword." On the one hand, due to the variety of parameters or additives involved in the food, the standard can only involve a part of it, and it will always be linked to one million. On the other hand, once a certain number of indicators have been determined, counterfeiters have a “benchmark” that breaks through and passes this standard, and can pass this part of the index to impersonate qualified products.

The way out is to establish a food safety responsibility system

The revision of national standards takes at least two years. In this context, how can food oil safety be ensured?

Liu Qinglu believes that rapid detection can only serve as a deterrent. The fundamental solution to food safety problems lies in the establishment of a responsibility system and a credit system. First, the sources of edible oil used by catering companies and food processing enterprises should be regulated, and appeals for improvement through the improvement of industry access systems, the improvement of market responsibility systems, and the establishment of a sound corporate integrity system. Second, in the case of strict state management, some should be allowed. Regulatory procedures and techniques, experience, data accumulation, and qualified technical arbitration and accreditation bodies engage in food safety technology arbitration rather than sticking to standards.

He once again stressed that through the formulation of technical standards and the coordinated operations of regulatory agencies and testing agencies, it is possible to prevent “oil waste” from being out of the food supply system. However, this does not rule out the lawbreakers’ circumvention of these standards and continue to absorb improper interests. Technical standards need to be continuously enriched and improved, but the only way out is to establish a food safety responsibility system.

Chen Junshi, a well-known food safety expert and academician of the Chinese Academy of Engineering, has repeatedly stressed on different occasions that safe food is produced, not regulated, and even less detected.

Lang Shuang said that foreign countries also have the concept of "disposal oil." The difference is that all countries have corresponding strict management measures. In Japan, the government collects "drainage oil" at a high price. After the United States treats household kitchen waste, the waste oil will be recovered by a unified recycling company. In Germany, every barrel of muddy water is provided with an “ID card”, which is strictly recorded on the basis of output, recycling, and utilization.