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Why are the raw materials of oolong tea thick and old?
Green tea and oolong tea are made from the same species. The biggest difference is that this process has not been fermented. Because catechins will rise with fermentation and combine with each other, the temperature of tea will be darker, but the astringency of tea will also be reduced. This component is related to catechin polyphenols that form oolong tea with each other. Catechins and polyphenols have antioxidant effects and can affect the activation of various enzymes in our body. About half of catechins will be converted into polyphenols of oolong tea. Therefore, under the dual effects of catechin antioxidant polyphenols and oolong tea, the variety show oolong tea does not have the effect of green tea.

Oolong tea efficacy:

Oolong tea contains a lot of polyphenols, which can enhance the function of enzymes, decompose fat, reduce the cholesterol content in blood, lower blood pressure, resist oxidation, resist aging and cancer. A new study published in the Journal of Obesity points out that people who drink tea regularly have lower body mass index and lower fat content than those who drink less. In addition, the obvious weight loss has a greater impact on women than men. This is because compared with black tea, green tea and oolong tea, it not only stimulates pancreatic lipase activity, reducing sugar and fatty foods to be absorbed, but also accelerates the increase of body heat production and promotes fat burning, especially in reducing abdominal fat accumulation.

Oolong tea to lose weight: hotels and oolong tea to lose weight, drink a cup before and after meals. It is best to drink hot tea without sugar. In addition, don't drink it immediately after meals, and about 1 hour is a more suitable time interval. Drinking tea must adapt to personal physique and feel uncomfortable. If you drink tea and like stomachache or sleep, you'd better stop. When making tea, the water temperature should be controlled at 80℃-90℃; Brew tea instead of tea and drink it within 30-60 minutes, otherwise the nutrients of tea will be oxidized.

Second, oolong tea.

Reducing neutral fat and cholesterol in beauty essence: anti-aging and clinical experiments show that oolong tea can improve SOD activity. Therefore, it can be inferred that oolong tea is likely to have a certain effect on skin health care. As a health index of skin, it can include the following, such as moist skin, elasticity, tension, good blood circulation and so on. What effects will fat metabolism and active oxygen scavenging have on skin health? We further put forward the following experiments.

In order to determine whether beauty and skin care are related, we selected 73 healthy China women aged 2 1 to 55 for clinical trials. Let 4G drink tea every day, 2G in the morning and 2g in the evening, for eight weeks. Then observe the change of sebum and water retention capacity as a measure of changing drinking effect. Detecting neutral fat in the detected object

1 sebum amount

After being seized, soap and websites for washing face are not allowed to touch makeup, and breakfast is forbidden. After washing for 4 hours, samples were taken. In the detection method, the sample of100g is added to the detection target part of a 2×2 cm paste degreasing filter for 65438+/-0 minutes. Then measure and compare the content of neutral fat, the main component of sebum film before and after drinking oolong tea. Changes before sebum and neutral fat

Tea consumption —— The content of neutral fat in the second skin lipid membrane was 33.7μg/ cm2 after the change, which was significantly reduced after the experiment, with a decrease of 27.4μg/cm2.

In order to further understand the function of oolong tea, the subjects divided sebum into two groups from the level before the experiment, that is, the comparison between the upper and lower parts of the average group showed that the fat content was low, which was 17.2 μ g/cm2 and 18.5 μ g/cm2 in the previous experiment, with no big difference, while a large amount of sebum was 54.9μg/ cm2 before the experiment. The results show that the tea does not simply reduce the fat content, but the effect of high sebum content is greater than that of low sebum content, that is, it can adjust the fat content, which shows that the tea is balanced.

3. Skin water retention capacity

Further experimental determination of skin water retention capacity. Because the skin is easily affected by the moisture content of the external environment, the temperature and humidity experiment is used to keep a certain room and measure it after entering the room for 30 minutes. The part to be measured is the cheek, the first natural state of skin moisture, then drop distilled water on the same part and wipe it. After that, measure it every 30 seconds and record it. Dropping distilled water into the stratum corneum instantly absorbs water, and then gradually dries over time, and the water decreases. You can know by testing the water retention capacity of the skin. The amount of water-holding capacity is often called "water-holding capacity", which means that the water-holding rate refers to the water content after dripping 120 seconds (water-holding rate (%) = 120 seconds, the amount of water to maintain the natural state of the skin in the later period/natural state × 100). The greater the water retention value, the higher the water sealing ability of the stratum corneum. Before and after water conservation, it was 65438 022% and 65438 037% respectively. After the experiment, the skin often increases its water retention. In addition, the experimental results of the same amount of sebum and water retention in the above group analysis are higher than those of the general people divided into two groups, and they are analyzed and compared. Results Compared with previous group experiments, the average water retention rate increased from 94% to 129%. The experiment shows that the water-holding capacity of stratum corneum is also significantly improved by drinking tea.

These results show that drinking tea for a long time can keep sebum balance and improve the water retention capacity of stratum corneum.

Third, activate the autonomic nervous system to relieve stress.

Oolong tea can enhance the parasympathetic activity of the autonomic nervous system and prevent the excessive stress caused by overeating, because I want to suppress anxiety and eating difficulties and help to lose weight.

Fourth, increase energy metabolism.

It is said that this kind of water, green tea and oolong tea have all been tested to improve the basic metabolic function, and it is found that water has no special effect. Green tea can increase metabolism by four calories an hour, and oolong tea can increase metabolism by nine calories! Asia and oolong tea last for five hours, so a cup of tea can burn 300c.c. 40 calories (equivalent to walking fast 15 minutes and going up and down stairs 10 minutes)-Middle East A, anticancer151June, 1998, Health News (reporter Zheng Yuan) They were sent to rats and five other Tieguanyin teas, while giving more than 99.8% methyl kannokia nitrate gel with the purity of synthetic carcinogens. After three months, the incidence of esophageal cancer in rats was 42-67%, which was the average number of tumors in mice for 2.2-3 months. The abstinence rate of rats with esophageal cancer was 90%, and the canceration rate of mice was 5.2. Average number of tumors with the best antitumor effect of five Tieguanyin teas. At the same time, they also conducted another experiment, using sodium nitrite and glue as carcinogenic precursors of methyl cards, and found that rats in the non-drinking group developed esophageal cancer, and the incidence rate in the non-drinking group was 100%. This result proves that tea can completely block the endogenous production of nitrite rubber.

2. Lowering blood pressure, 198 1 year. Yang said that Miyagawa is a female university and a male professor, which has an influence on the oolong of animal fat metabolism test, showing that it obviously inhibits the increase of cholesterol and neutral fat in the blood. During the period of 1983, patients with hyperlipidemia were banned under various circumstances in China Academy of Traditional Chinese Medicine and Fujian observation group. After drinking oolong tea twice every afternoon for 24 weeks, the cholesterol content of patients with hematological diseases decreased to varying degrees. Further animal studies show that oolong tea has the function of preventing and relieving lipid atherosclerosis. Drinking tea can reduce blood viscosity, prevent erythrocyte concentration, improve hypercoagulability, increase blood flow and improve microcirculation. This is to prevent vascular diseases, intravascular thrombosis and TCM QUOT? In addition, in vitro thrombosis experiments also show that oolong tea has the effect of inhibiting thrombosis.

3. Use with caution. Aging, 1983 Anti-aging Medical Research Institute, Fujian's experiment showed that feeding them tea and vitamin E significantly reduced the lipid peroxidation in the liver, indicating that tea and vitamin E have anti-aging effects. Human trials also show that taking vitamin C orally every day is enough. Drinking tea can keep the content of vitamin C in blood at a high level and reduce the excretion of vitamin C in urine. The anti-aging effect of vitamin C has long been confirmed. Therefore, drinking tea can enhance the body's anti-aging ability from 0. 1985. /kloc-in October, Professor Wang Zha interviewed Anxi Tea and wrote a poem, which highly summarized the health care efficacy of Anxi Tieguanyin Tea. Long-term beauty care can replenish the body. There are countless wonders of tea, and the enemy of Minnan flavor is close.