Small vegetables have 45 minutes of pesticide residue

The newspaper reported that a batch of small green vegetables should be listed. How can we quickly and accurately detect whether pesticide residues are qualified?

A few days ago, the reporter discovered that the “Quality, Safety, and Rapid Qualitative Detection Skill Match for Agricultural Products (Vegetables)” organized by the Hangzhou Bureau of Agriculture found that there is a method called “quick qualitative detection” that can detect vegetables in only 45 minutes. The pesticide residues in the qualified.

Compared to the quantitative tests used in the past, the rapid qualitative detection speed is much faster.

Quantitative testing mainly detects pesticide residues in vegetables one by one, and it is accurate to which pesticides there are. Then according to national standards, look at the residual amount of each pesticide. If there is a pesticide residue exceeding the standard, the tested vegetables will be unqualified and cannot be listed. If the residual amount of each pesticide is within the specified range, the tested vegetables are qualified.

Quantitative detection of this method, although very precise and accurate, but there is a problem, although the residue of each pesticide is very trace, if accumulated, will not have a bad effect on the human body?

Qualitative detection can basically eliminate this "likelihood". According to reporters at the “competition scene”, the method of rapid qualitative detection is to cut small vegetables into small pieces and soak them in specific reagents. The enzyme in this reagent is to simulate the active enzymes in the human stomach to see if they are vegetables. Pesticide residues will not inhibit this enzyme. When the pesticide residue reaches a certain concentration, it will inhibit the active enzyme, thus causing harm to the human body. After soaking, the reagents of the young cabbage are put into the instrument for testing, and the enzyme inhibition rate can be detected and passed.

Tian Xiaoming, Director of Agricultural Products Quality Supervision and Administration Department of the Municipal Bureau of Agriculture, said: “The quantitative test can take at least a dozen hours at the fastest, while the qualitative test can yield results in the fastest 45 minutes. If unqualified agricultural products are detected in the market, It will be destroyed."

At present, the city has established 222 agricultural product quality, safety, and rapid qualitative and dynamic monitoring rooms. This year's rapid and qualitative testing of vegetable production areas in the city carried out 18,000 batches, and the sampling inspection pass rate averaged over 98%, which ensured the safety of the local vegetable market. Sex. In the future, all agricultural product wholesale markets in Hangzhou will vigorously promote rapid qualitative testing methods, which will effectively prevent acute poisoning incidents.