last spring, Qingdao has been shocked to shock the country's "poisonous leek" news; more than a year, "blue leek" is also on the island. At noon on September 6th, Mr. Lu, a member of the family living on Furong Road, told reporters that his wife bought the leek with blue powder, and the leek hands were dyed blue. The reporter visited the Yanan Road overpass under the market, the market found that the blue powder did exist, there are some individual vegetable vendors to keep the leek fresh green
to spray blue vitriol to the leek. Dr. Zhang Jiacheng of Qingdao Agricultural University said that blue vitriol is an industrial chemical raw material, excessive intake of human body may lead to copper poisoning, serious people may even lead to kidney failure and death, is now prohibited in food or use.
strange choice of leek hand is dyed blue
"Blue 6 last night", "last night more than 6, my daughter-in-law in the market under the Yanan Road overpass bought 42 leeks. At noon, I and my parents are ready to pack a bag to eat, and choose a leek, who knows the finger has become blue after the choice." At noon on September 6th, Mr. Lu, who lives in Furong Road, Taitung, told reporters. At 1 p.m., the reporter came to Mr. Lu's home. Mr. Lu's father wiped the leek from head to tail with a white paper towel, and the white paper towel turned blue. Then he took a leek and shook it hard. There was a fine blue powder on the tissue below.
at 4 p.m. that day, the reporter came to the market below the Yanan Road Flyover. Before selling a vegetable stall, the reporter saw that the leek was green and tender, with almost no yellow leaves. Reporters picked up the leek observation, found that leek leaves covered with blue and white spots, especially near the root position. The reporter turned a leek to his tail with his hands, and his fingers turned blue. He sniffed his nose, and the smell of copper rust entered his nostrils.
the revelation for a good sale of blue vitriol "fresh"
later, the reporter found in the Nanshan market, the vegetable farmers generally put leek in the position of the sun, and the selling of leek is generally not very good, yellow green leek leaves everywhere can be seen. A vegetable vendor surnamed Liu told reporters: "I did not play too many leek dishes, and the sun will be yellowed for a while." "
" you do not think that looking at the fresh green leek is a good leek, that is the medicine, and many of the peddler with copper sulphate sprayed, eating is easy to vomit and diarrhea. A vegetable vendor told the reporter. In order to verify this statement, the reporter took a leek to a vegetable shop in Yanan road. The shopkeeper looked at the blue spots on the leaves of the leek and told reporters, "this leek has been treated by blue vitriol. Many of the vegetable traders will do this. The vegetables treated with blue vitriol will be green, look good and quality." Long time, not easy to wilt. "
dangerous to eat more diarrhea, serious fatal
for this, the reporter consulted Dr. Zhang Jiacheng, School of food science, Qingdao Agricultural University. "In the laboratory, the blue vitriol is green, and the blue vitriol is called five water cupric sulfate. The copper ions replace the magnesium ions in the chlorophyll of the normal leek. The molecular structure is very stable and green, and the leek is not easy to yellow, and the color is very bright." Zhang Jiacheng said that if the leek has blue spots and rust, it should be added to blue vitriol.
Zhang Jiacheng said that although the greens treated with blue vitriol are beautiful and have long shelf life, it is very harmful to the human body. "Blue vitriol is an industrial chemical raw material that can infiltrate vegetables in the process of reaction with vegetables. It has a strong irritation to the gastrointestinal tract, and a large amount of food may cause vomiting. Diarrhea, black stool and other symptoms, leading to acute gastroenteritis, jaundice, severe will lead to renal failure and even death.
in addition, as a result of the spray of blue vitriol, the blue vitriol has been chemically reacted with the vegetables. Ordinary citizens, using blisters and multi flushing, can not wash the copper ions that infiltrate into the vegetables. "The safest way is not to buy such vegetables. If you buy such vegetables, do not eat them. When people buy vegetables, if they find green vegetables very green, try not to buy them. Zhang Jiacheng suggested.
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Jiangsu has been out of blue alum rape
five water cupric sulfate, chemical formula CuSO4. 5H2O, commonly known as alum, alum, copper alum. Blue crystalline or crystalline powder, easily weathered in air. The oxidized zone produced in the copper deposit is also often found in the inner walls and pillars of the mine's roadway, which is crystallized from the water in the mine. It is a chemical raw material for pigments, batteries, pesticides, wood preservatives and so on.
in August 21st of this year, the Jiangsu media broke out that a Nanjing citizen bought rape at the farm market with blue particles attached. After testing by relevant departments, the pesticide residues in such vegetables exceeded the standard seriously, and vegetable traders also admitted that they had been sold in the market. Quality inspection, agriculture and forestry departments also said that such vegetables have great harm to the human body.
during the Dragon Boat Festival this year, the report of Zun Ye about the processing of blue vitriol was also reprinted by a large number of media. In order to make the dumplings more fresh and attractive, some black - hearted vendors will treat the dumplings with chemical raw materials. This kind of dumplings is harmful to the human body and can not be used to pack zongzi. (reporter Xing Chengbo)