Re: Ji'nan roast string stalls are now "poison heart tube" color white and bright are all caustic soda bubbles.
forty or fifty yuan to buy a jin of heart tube, this price is really expensive, then the reporter bought these heart pipe in the end have no problem? Though the owner of the shop said no problem, but it is suggested that the reporter throw in the water and eat again, it is really not to touch the head The brain.
a reporter learned in the investigation that many vendors are selling "heart tubes" for barbecue. Some of these tubes are in the water and some are refrigerated in the refrigerator, but their common point is that the color is white, the size is big, and the wall of the heart is very thick.
these stall owners emphasized that these tubes were made by themselves in a pressure cooker. They were never used to soak in the alkaline solution, and they could be eaten simply after baking. But the reporter bought a kind of heart tube in a wholesale market in Changqing District, Ji'nan. Unlike the heart tube in the front, the color is dim and yellow, and the wall of heart is thinner.
the booth owner told reporters that the heart tube he sold did not undergo any processing. He had to boil it with a pressure cooker before barbecue. Did the reporters buy these three kinds of tubes? Are they sold with soda? With them, the reporter found Mr. Wang.
after careful inspection, Mr. Wang said that, with his years of experience in the barbecue stall, the sample of the reporter and the sample 22 samples of the heart tube, it is very likely that the "poison tube" has been made with the soda bubble, and the sample No. three is no problem. Whether the result of Mr. Wang's judgment is accurate?
the reporter found a pH test paper. When the pH test paper meets the solution of acid alkali strength and strength, different colors can be displayed, and the acidity and alkalinity of the solution can be determined with the standard comparison color card. And using pH test paper to test the heart tube purchased by reporters, we can know whether they actually used it with no alkali.
survey: "cosmetic" heart tube alkaline large
pH test paper is a simple tool for measuring acid-base properties. In order to measure whether the three samples of heart tube purchased by reporters were soaked in soda, the reporters took some samples in beaker. After half an hour, some of the water in the heart tube was seeped into the beaker.
surprisingly, the pH test paper was placed in a sample tube and became green immediately. The second is also
showing a green color, while the third one looks unchanged.
compared them to the "standard color card", and found the number one and No. two. The color of the PH test paper is the same as the color of the PH test paper on the color card equal to 10, and the sample three is the same as the color of the above PH test paper equal to 7. The results of
test showed that the sample No. 1 was alkaline, No. 2 was alkaline, and No. 3 was neutral, that is, 1 and 2. Although the owner claimed that it was cooked in a high pressure cooker and did not use alkali bubbles, the two samples were actually soaked in alkali. In fact, the reporter learned from the survey that selling the barbecue shop with fire soda to the barbecue shop has become an open secret in their industry.
of course, we can't kill all the shops with a single stick. There must be a regular shop. It seems that there is no problem with the sample No. three bought by reporters. But through a reporter's investigation, it is true that shopkeepers are selling the kind of heart tube that uses caustic soda to bubble hair. Qilu network will continue to track this incident.