Ms. Zhu recently encountered an annoyance. The black corn she bought from the farmers’ market made her very tangled. After the water was cooked, the original water turned into a pot of “inkâ€, which made her suspect that the corn was Not dyed?
"Black corn" is not cheap
According to information provided by Ms. Zhu, a reporter from the Yangzi Evening News came to the Pudong Road vegetable farm in Pukou, and she saw the black corn that Ms. Zhu said in her mouth. The corn was sold by stall vendors in numerous yellow corns.
The Yangzi Evening News reporter picked up a black corn, and saw corn covered in black and full of particles. When he looked closely, he could see that there were purple and black lines in the middle of the grain, connecting each corn kernel.
The owner of the stall told the Yangzi Evening News that the corn he sells belongs to a new breed. Although it is eye-catching, most people only take a look.
A citizen smiled and told the Yangzi Evening News reporter that she did not dare to buy, that is, fear that the dark corn was dyed.
The boss appeared to be aggrieved. He said that the price of corn was not cheap at all. It was several times higher than ordinary corn on the market. The average price was about 5 yuan per catty, while other ordinary yellows were As long as corn is 2.5 yuan per catty.
The reporter experiment really boiled "ink"
In order to confirm Ms. Zhu’s purchase of dyed corn, the Yangzi Evening News reporter also bought back some black corn.
The reporter first found a cauldron, put the clean corn in the pot, pour water, and start warming. After twenty minutes, the water in the pot has started to change color, and the corn has changed from the original purple to black. After twenty minutes, when the corn is about to be cooked, the whole pot of clear fruit has completely changed. Indian ink."
The reporter took out the corn soaked in “ink†and put it in a clean bowl. The corn had cracked because of the high-temperature heating, and it could be clearly seen that the heart of the cracked corn was purple.
The reporter then poured "ink" into the white bowl, which allowed the reporter to discover new things. Originally, the “black ink†produced by the black corn was not like “wineâ€, because the color of the whole liquid appeared dark purple, like the “grape wine†that had been stored for many years. Moreover, it is difficult to wash away the colors that have been contaminated by this "wine". Seeing such a situation, reporters can't help but wonder if these corn can be eaten? What are these "off" colors?
Ink is actually anthocyanin
In order to verify that this new variety of black glutinous corn can not be eaten in the end, the Yangzi Evening News reporter consulted Mr. Dai, who specializes in corn at the Nanjing Vegetable and Flower Research Institute.
Mr. Dai told reporters that this corn is produced in Shanxi and is a brand new breed. At present, there are relatively few such corn in the Nanjing market. Even if there are, ordinary traders are not likely to purchase goods because they have not eaten and the price is very high. Moreover, people are afraid to buy even if they look “blackâ€. Some citizens bought these corns with great courage, but they found that when they cooked in the pot, they cooked up the color and thrown all the good corn in vain. In fact, this "ink" was produced because this type of corn contains water-soluble melanin, commonly known as "anthocyanin." And this anthocyanin is non-toxic and harmless, so you can rest assured that you can eat it. And in terms of its nutritional value, it has the effect of anti-cancer and immunity enhancement, selenium content is several times higher than that of ordinary corn, and it has a certain therapeutic effect.
Then corn has yellow, white, and colors. Now it is black again. Will anyone intentionally dye corn and sell it in disguise? Mr. Dai explained the question to reporters because in the surface layer of corn, a layer of bright waxy layer is seen. Generally, it is difficult to dye it. From the perspective of this black corn, even its heart is black. The ordinary dyeing is more difficult to do. Moreover, no one will dye the corn for a little bit of money. Therefore, the public can feel comfortable eating.
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