Why don't vacuum cup for tea?
Nutrition to tell you.
Tea contains a large number of tannic acid, theophylline, tea sesame oil and a variety of vitamins, with around 80 degrees Celsius with boiling is more appropriate, if use vacuum cup tea soak in hot water for a long time, like decoction with micro fire, vitamins in tea completely destroyed, tea sesame oil is also a large number of volatile;
Tannic acid, theophylline, a large number of leaching.
This not only reduces the nutritional value of tea, also lost a tea, and make more harmful substances.
In winter the temperature is lower, warm drink a cup of hot tea is a pleasant thing.
Tea nutrition is rich, is everyone drinks, especially in the winter, like drinking tea more.
The tea requirement for temperature is higher, will reduce the nutrition of tea we make tea in a vacuum, at the same time in the winter the old tea does less.
However, readers are probably don't know, winter low temperature, in order to ensure the temperature of the water, a lot of people are willing to use vacuum cup to make tea, so you can always drink the hot tea.
The digestive department of jilin province people's hospital doctor Lin explained, & other;
Tea high nutrients, contains a lot of theophylline, chlorophyll, vitamin and small amounts of a variety of amino acids, and potassium, magnesium, calcium, phosphorus and other trace elements, if use vacuum cup tea, under the condition of high temperature and constant temperature, a variety of vitamins and aromatic substances in tea reduce a lot, bubble good tea to drink up, that may feel somewhat bitter, taste not not stable vacuum bubble tea taste.
At the same time, aiming at the condition of the old people prefer tea, doctor warned, due to the old age, regulate body temperature in the cold environment or the ability to maintain body temperature and the diet has a lot to do with how much intake of iron, tea belongs to alkaline substances, itself can consumption of iron in the human body, this will reduce the cold hardiness of the elderly, especially afraid of the cold of the elderly, there must be less drinking tea in the winter.
Even if a cup of tea will in half an hour to drink tea after a meal, don't drink tea with their meals.