Is tea scale good or bad for health?
Tea contains tea polyphenols, which are easily oxidized to form tea scale when contacting with air and water, and attach to the surface of teapots and teacups, especially rough pottery surfaces. Tea scale contains harmful substances such as arsenic, mercury, cadmium, lead, etc. It is easy to combine with protein, fatty acids and vitamins in food through the oral cavity, resulting in precipitation, which hinders the absorption and digestion of nutrients by the small intestine and can cause inflammation and even necrosis of organs such as kidney, liver and stomach. Especially in patients with peptic ulcer, the intake of tea dirt often aggravates the condition.
Therefore, always clean the teacups and teapots. If the tea has tea dirt, it can be scrubbed with toothpaste, detergent, etc. Its descaling effect is very good.
Teach you how to easily remove tea stains.
1, potato/egg shell descaling method
First pour about half a cup of hot water into the thermos cup, dice the potatoes, put them into the thermos cup, then tighten the lid and shake it up and down for two minutes. Open the cup, pour out the water and diced potatoes, and then rinse with clean water. You will find that the tea scale attached to the cup wall is obviously less, and you can remove the tea scale by repeating it several times. If you don't have potatoes on hand, you can also use broken egg shells instead. The operation steps are the same.
Put a slice of lemon when making tea.
Some foreign researchers have found that the tea scale formed by soaking one bag of British black tea at a time is more than that formed by soaking two bags at a time, and the tea scale is not formed by soaking five bags at a time. This is probably because polyphenols in tea make the PH value of tea soup drop. Another patent achievement is that a small amount of citric acid is added to the tea bag to adjust the taste and reduce the tea scale. In addition, calcium ion is the key factor to form tea scale, which promotes the oxidation reaction of tea polyphenols and plays a cross-linking role in the polymerization process.
The harder the water is, the more tea stains there are, and the hardness of groundwater is greater than that of surface water, so the tea stains formed by making tea with pure water will be much less. When you make tea with tap water, you can boil the water for a few minutes, and the calcium and magnesium inside will form carbonated soda, which will reduce the formation of tea scale.
3, citrus peel to a cup of tea dirt method
After eating oranges, everyone will throw away the orange peel, but here, Bian Xiang Xiao tells you that wiping the teacup with orange peel can remove tea stains. For the teapot, we can boil it with orange peel or citric acid, and then we can clean the teapot residue 2-3 times.
4, salt/toothpaste descaling method
You can prepare a clean toothbrush, soak the bristles of the toothbrush, dip them in some salt, then put the toothbrush into the cup and scrub the cup wall carefully, which is very effective in removing dirt. If you don't have salt on hand, you can use toothpaste instead. The bottom of the cup is the most difficult part to clean when descaling. You can find a small piece of soft cloth dipped in salt or toothpaste and wrap it on chopsticks. Then, put the chopsticks into the bottom of the thermos and stir them back and forth several times.
Ceramic surface. Tea scale contains harmful substances such as arsenic, mercury, cadmium, lead, etc. It is easy to combine with protein, fatty acids and vitamins in food through the oral cavity, resulting in precipitation, which hinders the absorption and digestion of nutrients by the small intestine and can cause inflammation and even necrosis of organs such as kidney, liver and stomach. Especially in patients with peptic ulcer, the intake of tea dirt often aggravates the condition.
Therefore, always clean the teacups and teapots. If the tea has tea dirt, it can be scrubbed with toothpaste, detergent, etc. Its descaling effect is very good.