December 2019, in Wuhan China the Coronavirus outbreak, in 12th Jan 2020, the World Health Organization(WHO) gave the virus name as 2019 new coronavirus (2019-nCov). The WHO has confirmed Coronaviruses (CoV) are a large family of viruses that cause illness ranging from the common cold to more severe diseases such as Middle East Respiratory Syndrome (MERS-CoV) and Severe Acute Respiratory Syndrome (SARS-CoV). A novel coronavirus (nCoV) is a new strain that has not been previously identified in humans.
Common signs of infection include respiratory symptoms, fever, cough, shortness of breath and breathing difficulties. In more severe cases, the infection can cause pneumonia, severe acute respiratory syndrome, kidney failure, and even death.
Standard recommendations to prevent infection spread include regular hand washing, covering mouth and nose when coughing and sneezing, thoroughly cooking meat and eggs. Avoid close contact with anyone showing symptoms of respiratory illness such as coughing and sneezing.
China has experienced thousands of years of history. In the long course of history, countless diseases and plagues have never stopped the erosion of human life. However, in these thousands of years of history, our ancestors have already concluded some valuable experience, allowing us to can protect ourselves from generation to generation.
In the course of treatment against the new coronavirus epidemic, Chinese traditional Chinese medicine has shown amazing results, and many Chinese medicine prescriptions have effectively cured a large number of patients with new coronavirus. In addition to Chinese medicine, as tea people, we are also very concerned about whether tea can effectively protect our health in major diseases such as flu.
To this end, we have collected a lot of information on the clinical health research of tea for your reference.
Although the tea and health textbook edited by Professor Tu Youying of the Department of Tea Science of Zhejiang University has been published for more than 10 years, at the current coronavirus situation, we take this opportunity to summarize and translate the "tea antiviral effect" part in this book to share with everyone:
Mechanism and efficacy of tea for preventing flu
According to a report by Asahi Shimbun in Japan on August 1, 2009, Japanese researchers have developed a new flu drug using a green tea extract. Animal experiments have shown that the drug can inhibit influenza virus infection as effectively as anti-flu drugs Tamiflu.
Additional inhibitory effect of tea extract on the growth of influenza A and B viruses in MDCK cells.
As early as 1990, Nakayama M and others used Chinese Sichuan 2/87 influenza virus A, former Soviet Union 100/83 influenza virus B, and Madin-Dary canine kidney (MDCK) cells propagated on 11-day-old chicken embryos to study black tea The extract (20 g of black tea soaked in 80 ml of phosphate buffer solution) has an inhibitory effect on influenza virus.
Mixing 11ul / ml tea extract with an influenza virus for 60 minutes can effectively inhibit the adsorption of the influenza virus on MDCK cells, and the inhibition rate is above 80%.
Short-term contact between the virus and black tea extract can also reduce the degree of virus infection on MDCK cells.
Treating MDCK cells with tea extract at a concentration of 50ul / ml, and then infecting them with influenza virus, the infection inhibition rate was 85%, but when MDCK cells were infected with the virus, there was no inhibitory effect.
It can be seen that the black tea extract has only a preventive effect on influenza virus A or B, and has no therapeutic effect after infection.
Studies on the direct inactivation effect of tea polyphenols on influenza virus A3 have shown that in a mass concentration range of 3.12 to 50 ug / ml, influenza virus A3 is cultured under the condition of mixed tea polyphenols, and tea polyphenols have significantly reduced virus activity and Inhibition of virus proliferation.
The therapeutic effect of tea polyphenols on influenza virus A3. Experiments have shown that tea polyphenols have a significant anti-influenza virus A3 effect in the mass concentration range of 6.25-50ug / ml.
Researchers at Japan's Showa University have found that catechins in tea can inhibit the activity of influenza virus, and insisting on gargle with tea can effectively prevent influenza.
Influenza is caused by viruses that proliferate on raised mucosal cells in the nose and throat.
Often gargle with tea or drink more tea, catechins can cover the raised mucosal cells to prevent the influenza virus from binding to the mucosa and kill the virus.
The research results show that oolong tea, black tea, and green tea all contain catechins, and green tea has the best effect in preventing influenza.
The Role of Tea in Fighting Sars virus
On April 16, 2003, the WHO announced that the pathogen of Sars disease suggested a new variant of the virus concerned and named it SARS coronavirus.
The 3CL protease is considered to be the key to SARS-CoV replication in host cells.
From the 72 components of the natural product information library, people have screened components that are resistant to 3L protease. phenol.
Further research on 3CL protease inhibitory activity of green tea, oolong tea, puer tea, and black tea extracts, found that the extracts from puer tea and black tea were more active than green tea and oolong tea.
The Proceedings of the National Academy of Sciences of the United States of America reported in 2003 that theanine of tea can increase the body's ability to resist the infection of the virus by five times.
Theanine is broken down into ethylamine in the human liver, and ethylamine can be called 'Vγ2Vδ2 T cells' are human blood immune cells, and then T-cells promote the secretion of ' IFN-γ interferon', forming a 'chemical defense line' for the body to resist infection, responding to external aggression, resisting viruses, bacteria and Fungus.
Researchers point out that drinking 5 small cups of tea a day is enough to help the body significantly strengthen resistance to specific bacterial infections. Drinking tea for two consecutive weeks can increase resistance to bacteria, but drinking coffee for two weeks does not have the same effect.
In addition, tea contains a large amount of anti-oxidant effects on tea polyphenols. If the body contains certain antioxidants, it can enhance immunity.
Tea is also rich in vitamin c, vitamin e, trace elements zinc and selenium, and these elements are medically effective substances to improve human immunity.
Of course, it ’s not that the virus is here and we only start drinking tea, and we can immediately improve the immunity. We must adhere to a long-term sustainable healthy drinking tea to effectively improve immunity.
The Role of Tea in Fighting HIV
Studies have shown that catechins and green tea extracts in tea have a strong inhibitory effect on HIV virus reverse transcriptase.
EGCG, the main ingredient in green tea extract, can bind to CD4, thereby reducing the expression of CD4 on the cell surface, and competitively inhibiting the binding of HIV membrane glycoprotein GP120 to CD4, thus protecting some facial lymphocytes from attack...
We would like to take this opportunity to express our high respect to the workers of clinical medical research. Thanks also to scientists who respect the laws of nature and have ethics and justice.
We would like to take this to send a copy of scientifically meaningful information to tea lovers about the panic caused by the new coronavirus. If you are a tea drinker, don't forget:
1. The commodity you choose determines whether the planet can be sustainable.
2. The way you drink tea determines whether the tea industry and even the entire agriculture can be sustainable.
3. The way you buy and drink tea determines whether human beings can develop healthily and sustainably.
Learn how to become an authentic tea consumer from our tea book Tea Poison
Please DO NOT
1. Please do not choose a tea from unknown sources at random. Even if it is a tea from a large company with beautiful packaging, you must know whether the tea really grows in a pollution-free biodiversity environment. Otherwise, your tea will not play a role in improving immunity, on the contrary, it will be more harmful to your body. If you would be interested in how so, please read our book The Wild Truth of Tea.
2. Please do not drink too much tea at once, make sure to drink tea every day with a sustainable amount of quantity. Excessive or excessive consumption of tea will damage your stomach and cause other unwanted side effects. If you would be interested in to know why, please read our tea book 5 Element Tea
3. Please don't drink tea like whatever. Only by properly selecting the type of tea and brewing the tea at the right time in the right method can the best health effects of tea be obtained. We have built up comprehensive online courses to share more details with you.
We translated the information from Chinese to English within a limited time, there must have some English errors or some mistake of translation. Please give your forgiven. If you would be interested in to find more information about scientific research about how tea can help us to increase the immune system and anti-virus, you can find lot more information on Google search the keywords as follow:
Tea, Immune system, Coronavirus, influenza, flu, virus, improve immunity, black tea, green tea, puer tea, Tea polyphenols, Catechin...
Thank you for spending time to read this article and we wish you very good health and in good mood every day!
- In Good Tea
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