Insulation cup tea party to produce heavy metals?

Original title: Insulation cup tea party to produce heavy metals?
the weather gradually cools down, some people are used to soaking in the insulation cup and other ingredients, then the insulation cup bubble these things are safe? It is said that the use of stainless steel inner bile insulation cup tea will produce heavy metals, resulting in chronic poisoning. Is it really life-threatening to have a cup of tea in winter?
Three Is True to Food", sponsored by the Office of the Jiangsu Food Safety Commission, Jiangsu Provincial Market Supervision Administration, and hosted by the Jiangsu Reporters Station of the China Food Safety News Agency, invited Yang Jun, president of the Nanjing Food and Drug Administration, to explain the topic of "whether the insulation cup can make tea".
the "insulation cup tea will produce heavy metals" this statement that tea will produce tea scale, tea scale will corrode the cup, and then dissociate heavy metals, and eventually lead to chronic poisoning. There is no basis for this claim - what is tea scale? It is a layer of scale that has been silted after long-term storage of tea in the tea set and does not contain corrosive ingredients. In addition, the stainless steel used in the inner wall of the insulation cup is an inert material that is difficult to corrode. Therefore, "insulation cup tea will be out of heavy metals" is not valid.
's not really what you see. We took soaked 24 hours of tea insulation cup (stainless steel inner bile) came to Nanjing Food and Drug Administration and Inspection Institute, at the same time will be the same type of tea in accordance with people's daily way of making tea using glass on-site brewing, reference to the national standard GB 5009.268-2016 "national standard food multi-element determination" prescribed methods, testing two kinds of tea lead, arsenic, chromium, cadmium content. First, the tester drew 25 ml of tea from each of the two containers, put it into two dissolving tanks, after evaporation concentration, strong acid dissolving and other steps, and then the two treatment fluids were transferred and fixed to 25 ml capacity bottle, electrosensively coupled plasma mass spectrometer (ICP-MS) to determine the content of lead, arsenic, chromium, cadmium in the two samples.
From the test results, it was learned that there was no significant difference in the content of four kinds of heavy metals in tea soup made from metal insulation cups and ordinary glasses, and there was no scientific basis for the statement that metal insulation cups would produce harmful heavy metals.
but in life, you may have encountered another phenomenon - tea made in a warm cup is darker and tastes worse than tea made in a normal glass. This is because long-term immersion in high-temperature boiling water, tea polyphenols dissolved extremely fully, resulting in strong tea soup color, dark color, bitter taste. So why does the insulation cup taste worse? That's because tea contains tea polyphenols, fennel, aromatic substances, amino acids and multivitamins, and when tea is made in a teapot or a regular glass with boiling water, a large number of beneficial ingredients dissolve in the water, and the soup produces an aromatic smell. At the same time, because of tea polyphenols and corning and other ingredients in boiling water, tea soup will have a slightly bitter taste, can be said to be just right. If you make tea with a warm cup, the equivalent of greatly extending the brewing time and maintaining a high temperature, aromatic substances will quickly evaporate, thereby reducing the aroma of the tea should affect the taste. Although the insulation cup of tea, although it does not produce heavy metals, not to endanger our lives, but still has its drawbacks. However, the insulation cup bubble is no problem, you health care people can continue to act Oh, but in the use of insulation cup, pay attention to prevent its biggest health hazard - bacteria breeding. Because the inner bile of the insulation cup is relatively thick, a large number of bacteria will hide in the health dead end, so after a day of use, should be thoroughly cleaned, can be put in the cup a little soda, and then with sponge brush and other flushing inner bile, after cleaning to the cup water stains to dry fully and then cover the cup.
said so much, what exactly can the insulation cup be made of? Here for you to keep warm cup people make a small knot: insulation cup bubble after drinking should pay attention to thoroughly clean the cup. And insulation cup tea although there is no security risk, but will affect the taste of tea, not recommended.
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