"Tear-resistant cabbage" made of plastic? Expert: Not likely.

BEIJING, Feb. 21 (Xinhua) -- Recently, a video questioning "purple vegetables may be plastic bags posing" circulated on the Internet, so that many consumers have doubts. Can cabbage have anything to do with plastic bags, what is the real reason why cabbage is hard and hard to chew? Xinhua interviewed Zhong Kai, an expert of the China Food Disinformation Alliance and a doctor of food safety, on related issues.
denied whether the cabbage in the video was made of plastic: "The product in the video is crisp when dry, soft in water, and the plastic doesn't absorb water, so it can't be made of plastic."
Zhong Kai said that the video so-called "problem purple vegetables" can be pulled after the bubble is relatively thin, tough, light transmission is good, uniform color, only from the point of view of process production, such things can be done with plastic, but need to use good raw materials, the cost will be relatively high. From a cost point of view, making such a film is not as good as making plastic bags, more profit.
" purple vegetables taste and varieties, climatic conditions, production environment, hydration conditions, etc. , more importantly, harvest time. Zhong Kai said that purple vegetables grow in the shallow sea tide zone, the current production of pure natural purple vegetables is less, most of the purple vegetables are artificially planted in the shallow sea. People are more familiar with the two varieties for the altar purple vegetables and striped purple vegetables, relatively speaking, the former taste harder, tough, often made into a disc, mostly used in purple soup;
why did the woman in the hot video buy purple vegetables that doesn't pull open? Zhong Kai introduced that the growth of purple vegetables for the annual September-October to the next year 3-4 months, generally half a month or so harvest once, the line says called a water, later called two water, three water, four water and so on. A water tastes tenderer, and the older the harvest, the older it tastes. The purple vegetables in the video are difficult to tear, in addition to soaking water temperature is low or short water temperature and other reasons, there is also a great deal of the product may be after harvesting.
Zhongkai suggested that consumers need to buy high-quality cabbage products, as far as possible to choose compliance channels.