In the Wuhan Food Inspection Office, a group of Mengwa tested vegetable farmers' residues by hand

Jimu Journalist Liu Dongli

Correspondent Gui Caihua

"Wow, there is really a rainbow rain inside the water!" "Before the food test, you needed a 'pink body to break the bone!" On July 26, the Wuhan Market Supervision Bureau "Sister Kangkang Summer Parent -Child Tour" event, walked into Wuhan food The cosmetics inspection institute (later referred to as "Wuhan Food Inspection Institute"), under the leadership of the interpreter of 12 groups of families witnessed the entire process of food testing. The children not only tested pesticide residues in the vegetables, but also made the water " Rainbow Rain ".

It is understood that the event was the second game of "Sister Kangkang's summer science popularization parent -child tour". After that, the series of activities will continue to enter the professional laboratory of the Wuhan Pot Inspection Office, Wuhan Special Inspection Office, and Wuhan Overview Management Office. Each event will be broadcast live through the online live broadcast platform.

The sample enters the warehouse and get an exclusive label

In the business acceptance hall of the Wuhan Food Inspection Institute, the staff is checking the information of the product one by one. "Here is a place to register for food." Zhou Weijing, a senior engineer of Wuhan Food Inspection Institute, told the children that a total of 20 sampling players in the institute will go to all parts of the country to samp The information form, this information will be checked one by one in this hall, and then the sample is transferred into the sample library.

"Wow, this room suddenly became cold." Entering the sample library, several children couldn't help sighing. In order to ensure that food does not deteriorate during storage, the sample library is divided into "freezing library", "refrigerated library" and "room temperature library", but even the normal temperature library will keep dry and cool all year round. "Here, all the samples will be posted with an exclusive label." Zhou Weijing explained that in this way, the inspector only had digital code after getting the sample. Essence

Food "physical examination" must be "shattered bone" first

In the front processing room, the inspector will prepare the food to be checked: After chopping the homogeneity, it will be placed in different inspection areas according to the different test items. "Wow! The original food checkup had to 'pink bone broken bones'!" The words of a child at the scene attracted parents and inspectors to laugh. These "pink bones" foods will then enter different laboratories and test the corresponding items.

In order to allow children to experience the process of food testing at close range, Xu Qing and Zhou Xiaoting of the Chemical Testing Center showed two commonly used detection instruments- "liquid chromatography-quality spectrum use instrument" and "gas color spectrometer" to the children. These two instruments can be used to detect pesticide residues, food additives, veterinary drug residues and other projects in agricultural products. "With the help of these instruments, we are more assured of eating!" The children's words once again caused the audience laughter.

Detecting the farmers' residue by hand, there is "Rainbow Rain" under the water

At the end of the visit, the children came to the Interactive Experimental Zone, and the inspectors taught the children to conduct the fast inspection experiments of vegetable farmers' disability.

"After the average quality of the vegetables is added, add 60 ml extraction solution, shake it for 30 seconds, and then static for 1 minute. Drop the sample extraction solution on the test note. You only need to use the shades of the color rendering line color to determine the judgment of the color rendering line. Whether pesticide residues exceed the standard. "When the children operated the experiment by themselves, Zhou Weijing told the parents that it was the method of fast testing pesticide residues that we often used. , Still need to be used in the laboratory instrument.

Subsequently, the children played an interesting "Rainbow Rain" experiment again. After pouring the edible oil mixed with pigment into the water, because the density of the edible oil was less than the density of water, the edible oil wrapped in pigment would float on the water surface. After a period of time, the pigment began to sink into the water and dissolved with the water, so the dreamy "rainbow rain" was set down. "It's so interesting, these knowledge can't be learned in school classrooms." The 9 -year -old Luo Weichen did an experiment and excitedly called his father to "report" the knowledge learned. He said that he would continue to participate in this in the future. Class activities make yourself more and more "learn".

Small egg knowledge: how to choose bottled water

At the end of the event, a "sharp -eyed" child saw various bottled water on the experiment. "This is a little egg for you!" The interpreter on the scene explained that these bottled water was sold very common in major supermarkets, including Master Kang, Nongfu Spring, Yibao, etc. Most people see these water. Call them "mineral water", but in fact, only by distinguishing the label logo can we judge who is "mineral water".

"Everyone can pay attention to the label on the water bottle. Not only is the back marking natural mineral water, but also the GB8537 is marked on the product standard number. "Zhou Weijing introduced that compared with pure water, mineral water contains trace elements that are beneficial to the human body, but whether it is pure water, mineral water and other types of drinking water, long -term drinking on the health of physical health is basically the same, because the purpose of drinking water is the purpose of drinking water, because the purpose of drinking water is the purpose of drinking water Just to replenish water, not nutrition.

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