Rest assured that there are only radish potatoes?
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picking fresh fruits and vegetables from vegetable fields, simply eating them. Now, this kind of relieved dish is hard to find. Recently, reporters visited Ji'nan's large and small farmers' markets and their surrounding vegetable growing areas. Most of the vegetable traders said "almost no vegetables do not fight pesticides." As for pesticide residues, some vegetable growers admitted that they did not exclude other people from using non-standard drugs, resulting in excessive pesticide residues in vegetables listed.
vegetables in the market, what are pesticide residues and how to identify them? Professional testing companies and experts give answers.
reporter Xu Hanyun newspaper reporter Wang Maolin Lu South commercial newspaper reporter Fan Kai citizens: buy home food to be washed five or six times "spring onion, February leek", at the moment to eat the good time to eat leek. However, in order to prevent the root diseases and pests of leek, leek is known to the public.
"can't buy leek that looks very thick and fat." After you buy home, cut the roots of the leek, wash it and soak it in the water for a while. " Speaking of eating leek, Mr. Sun of Ji'nan is extraordinarily "meticulous".
"where is the dish that doesn't need medicine now?" when Mr. Sun talked about vegetable safety, Mr. Sun shook his head vigorously. In order to avoid buying vegetables with excessive pesticide residues, he now basically buys from several downstairs stalls on the downstairs. But even so, he has bought mushrooms that can produce purple red water.
for Ms. Zhu, a provincial white-collar worker, her "buy vegetables" is a "stupid way" taught by her mother. "Eat less cabbage, cabbage, these leafy vegetables are used more, and cucumber, tomatoes and eggplants in the greenhouses are also eaten less, because ripener is needed." Finally, Zhu's mother gave the rest of the rest of the menu, leaving only the tuber, potato and yam tuber crops.
Ms. Zhang is not so meticulous that she can not rest assured of the dishes she bought. "I usually wash five or six times, and I'll take another half an hour." Every morning, the vegetables from the county and city of Ji'nan and the local county into the seven Libao, eight Li bridge, Kuang mountain and other major vegetable wholesale markets, and from these wholesale markets to the community food market, supermarkets, and so on, and finally into the public basket.
in the Chai pan Street Community vegetable market, vegetable retailer Wang Shifu said that many tomatoes on the market were ripened by drugs. He then broke off naturally cooked tomatoes and ripening tomatoes. The naturally ripe grains were yellow, the meat was red and sands, while the surface was no different, but there was no grain inside.
seven Libao vegetable wholesale market, a woman seller of cucumbers and tomatoes said that the cucumbers planted in the greenhouse must be medications. "This thing does not use medicine long, three days have to take medicine, otherwise the insect." She said that cucumbers take the most medicine and eat better.
another male vendor selling pepper and eggplant on the market showed the bottom of the story to reporters: "vegetables have to be used for medicine, not for drugs." However, the pesticide residue period is usually seven days, and after half a month, it will be all right. The argument of
vegetable vendors has also been confirmed by vegetable farmers. "Where does the vegetable have no medicine?" said a vegetable farmer in Chai Jia village, Diao Town, Zhangqiu, "but some people play more, some people play less, as long as it is about 10 days before the harvest is stopped, no problem." Although it is said, but the people who buy vegetables are still very worried: after 10 days of medicine, pesticide will really not exceed the standard? The vegetable field visit.Gt;.Gt; the individual vegetable farmers "feeling" on the market vegetable can guarantee pesticide residues not exceed the standard? Ji'nan Kuang mountain vegetable batch Market responsible person introduced, enter the market every one. Vegetables must undergo strict sampling checks, and unqualified vegetables will not enter the market.
in Zhangqiu City Diao town vegetable wholesale market, in addition to the general weighing, there is a pesticide residue testing room, the inspector Yuan Jilin is a batch of fresh vegetables samples cut into the test tube, for testing.
"spot check" is focused on leafy vegetables. In the two season of summer and autumn, the weather is hot, and there are more pests. In addition, because of the rapid growth of vegetables at that time, some growers would ignore the use intervals of pesticides, and the pesticides on vegetables were not yet evaporated until they were harvested. Diao town vegetable wholesale market management leader Yuan Ruzhong said.
Chai Jia Cun Village Branch Chai Shu Mao said that the ecological leek is the use of high efficiency and low toxicity, volatile pesticides, leek 10 days before the harvest is completely evaporated, but the general farmers use a little more volatile.
, however, there are also vegetable farmers frankly, "some farmers do not take medicine according to the standard, the insect is more aware of the fight, with the feeling, the result has not waited for pesticide volatilization clean on the harvest, of course, there will be pesticide residues." Professional testing.Gt;.Gt; 8 samples of leek samples have not exceeded the standard 12 days, the reporter bought eight leeks in several vegetable selling points in the Ji'nan calendar and the almanac area. The price varies from 1.5 yuan to 3 yuan per Jin. The producing area includes Zhangqiu, Tai'an and the suburbs of Ji'nan. With these samples, the reporter came to Beijing Sai Da Da Technology Co., Ltd. Ji'nan branch. The company's food safety rapid detection equipment has been applied to many government regulatory departments and catering companies such as Qingfeng baozi shop.
pilot Guo Qi of Sai BDA company introduced 1 grams of samples soaked in buffer solution, then the sample solution and extract the sample soaking solution, then add enzyme solution and color reagent, shake well for 15 minutes, then add the substrate, and put into the instrument for testing. After three minutes, the test results can be obtained. The whole process is about half an hour.
from the test results, the inhibition rates of pesticide residues to cholinesterase in 8 samples were not more than 50%, the highest was 27% and the lowest was 12%. According to national standard B/T5009.199-2003, the pesticide residues in these samples were not exceeding the standard.
"common people can also be tested by buying a quick test paper, but sometimes the test results are not accurate due to chromatic aberration." Guo Qi said.