Tea health care Efficacy

For Chinese, drinking tea and maintaining health are a tradition that has been around for thousands of years. In recent years, there have been more and more research on the health efficacy of Tea: anti-cancer, protection of cardiovascular, anti-radiation ...... It seems that all the health risks in people's life can be solved by a cup of tea. So what are the nutrients in tea, whether it can play a health effect, and how to drink it to maximize the health effect? In this issue, we invite top tea experts in China to answer these questions that everyone is most concerned about.

Anti-cancer is the main function of tea

Professor Han Chi, a researcher at the Institute of Nutrition and Food Safety at the Chinese Center for Disease Control and Prevention, has been engaged in the study of Tea nutrition and efficacy for decades and is the leading tea expert in China. He told reporters that at present, the specific health effects of tea are to prevent cancer (including lung cancer, esophageal cancer, liver cancer, colon cancer, etc.), regulate blood lipids, reduce blood sugar, enhance immune function, prevent smoking damage and so on.

"Drinking tea can repair the DNA damaged by smoking, and the effect is very good. This is the conclusion we have drawn from human experiments, and it is also the world's leading conclusion ." Han Chi explained, "There are a lot of research on tea in the world, but most of them are animal experiments and they are made using tea extracts. We use tea-soaked Human Body experiments to prove that people can enjoy this benefit as long as they insist on drinking tea correctly in their daily lives ."

Jiang Yuanyuan, a researcher at the Tea Research Institute of the Chinese Emy of Agricultural Sciences, who is mainly engaged in tea and health research, told reporters that there are a wide variety of valid nutrients in tea, such as tea polyphenols that everyone is familiar, there are also thetheaine, vitamins, caffeine and so on. "According to the production principle, Chinese tea is divided into six categories: green tea, black tea, yellow tea, white tea, green tea, and black tea. Later, some processed teas, such as flower tea, were developed on the basis of the six categories ." Jiang Yuan said that different tea ingredients have different effects.

Green tea protects the cardiovascular. Green tea is non-fermented tea, represented by Xihu Longjing, Dongting Biluochun, and Huangshan Mao Feng. Its main function is to prevent cancer and cardiovascular diseases, but also to antioxidant, improve immunity, inhibit and kill bacteria.

White Tea relieves anxiety. "White tea is classified in two different ways ." Han Chi said that one is the familiar Anji white tea, which is actually a kind of green tea. It has become popular in recent years because it tastes more mellow than green tea. Jiang Yuan said that the main functions of white tea include protecting brain nerves, enhancing memory, and reducing anxiety. In addition, the tea acid in the white tea can neutralize some of the role of caffeine, "those who are afraid of drinking tea affects their sleep can drink white tea ." Another kind of tea is white tea that is produced in the fording area of Fujian, this kind of tea has a good effect on regulating immunity and reducing blood sugar, "Han Chi said.

Tea and black tea reduce cholesterol. Qingcha is a semi-fermented tea. Its representative varieties include Wuyan tea (Dahongpao), Tieguanyin, frozen top Oolong tea, and Phoenix single-stick tea. Black Tea is a fully-fermented tea, the representative varieties are Anhui Hong and Yunnan Hong, and India and Sri Lanka's black tea are also world-renowned products. "Due to fermented black tea, it is less irritating than green tea and has different efficacy, which can promote blood circulation and reduce cholesterol ." Jiang Yuan told reporters.

Black tea to reduce fat. Black tea is a post-fermented tea, which is most familiar with pu'er tea. The total amount of tea polyphenols is high, which has a good effect of reducing fat and reducing weight. According to reports, Professor Berner jaketop from Henry lundo hospital in Paris gave 20 patients with high blood fat three bowls of Yunnan pu'er tea a day, A month later, the patient's blood fat was almost reduced by 1/4. According to the Japanese health magazine, pu'er tea can inhibit weight gain and reduce blood cholesterol and triglyceride.

"The active ingredients of some famous tea products, such as mingqian tea in Longjing, are the same as those of common tea, and the content may be different ." Jiang Yuanyuan explained that because of the Early Harvest of mingqian tea, the tea acid and vitamin C content are high, while the tea content is low. "For health care, you don't have to buy expensive teas," Han Chi warned. Which kind of tea is the most nutritious? The two experts believe that, in terms of the total quantity of phenolic substances, each type of tea is similar. However, because the green tea processing process is the simplest, therefore, the nutrients are better preserved.

 

How to drink tea best health care

It is also a matter of learning how to make the best use of tea that suits you. Han Chi said: "Different Tea methods for preservation, brewing, and drinking are all exquisite ."

Save: tea leaves are most wet and nose. The best storage container is Tin bottle, porcelain altar, colored glass bottle; secondly, iron should be used, wooden box, bamboo box, etc.; plastic bag, the most time. The container should be dry, clean, and nose. Store the preserved tea leaves in a dry and ventilated place, not in a humid, high-temperature, unclean, exposed place. These places cannot contain camphor, medicines, cosmetics, cigarettes, detergents, and other items with a strong smell. The new green tea in that year can be sealed and placed in the refrigerator freezer for 3-6 months.

Brewing: Tea washing can take up to 15 seconds. "People like tea, but I don't agree to over-tea ." According to Han Chi, during the experiment, we found that the effective ingredient leaching rate of green tea was more than 70% twice, and that of black tea was more than 60%. That is to say, if the tea is over-washed, the nutrients will be lost. Jiang and Yuan reminded that if tea leaves have to be washed, the tea time should not exceed 15 seconds. Do not wash green tea or white tea. "But there is one exception. People who are sensitive to caffeine can wash them before drinking tea, because the alkali leaching of coffee is faster than that of tea, and quick washing can remove part of caffeine ."

Drinking: 12 grams a day is the most suitable. Jiang yuan suggested that for ordinary people, it is appropriate to drink about 12 grams of tea a day and wash the tea three to four times. People who eat more greasy food and a large amount of alcohol and tobacco can increase tea consumption. Drinking tea should be reduced for pregnant women and children, neurasthenia, and tachycardia. Han Chi warned that with the popularity of Kung Fu tea, drinking tea is "getting hotter and hotter", which is very wrong. "People drink tea for health care, but drinking hot tea will increase the incidence of cancer such as esophageal cancer, not worth the candle. The optimal temperature for tea drinking should be about 60 degrees, not more than 70 degrees ."

In addition, you can drink different teas at different times in a day: drink a cup of green tea in the morning to clear your mind; drink jasmine tea in the morning, which is fragrant and pleasant, can improve work efficiency; drink a cup of black tea in the afternoon to help you get rid of difficulties. In the evening, you can gather together with friends or family members and soak in a pot of Oolong or pu'er. Don't have a taste or affect your sleep. You may wish to give it a try.

　Residual tea can also be used

 

It is no exaggeration to say that the tea is full of treasure. As long as we make good use of the tea, we can make full use of the heat.

First, overnight tea. Jiang and Yuan said that drinking tea overnight is not harmful, but tea is prone to oxidation, so tea spots are often left on the tea cup overnight. In addition, the summer temperature is high, tea is prone to bacterial pollution, moldy, hair loss, resulting in diarrhea, so it is better not to drink overnight tea in summer. If you are unwilling to drop it, it can also be used for the following purposes: 1. overnight tea is rich in acid and fluorine, which can not only prevent capillary bleeding, but also play a bactericidal and anti-inflammatory effect, such as oral bleeding, skin bleeding, etc. wash your hair with overnight tea to reduce scalp itching. bad breath makes many people worried. If you use overnight tea three times a day, you can eliminate bad breath troubles.

Second, old tea and tea residue. Green tea people like Longjing pay attention to drinking the new tea Of The Year. If they haven't finished the tea, these teas can also play the same effect: 1. Make dishes. When stewing meat or making other greasy and nose dishes, you can put some tea leaves, which has the effect of de-oily solution; 2. tea dregs can be dried and collected, and made into tea pillows with old tea, which is especially suitable for summer use. If the amount of tea leaves is not enough, you can also make a small tea bag for eye application to relieve visual fatigue. dry the soaked tea leaves and sprinkle them in wet places at home, such as under the bed, to absorb moisture.