Tea Compounds | masterstalk.online

Green tea catechins might be useful as pan-coronavirus inhibitors

July 6, 2021

Green tea catechins

Scientists from the Queen’s University, Canada, have recently uncovered the broad-spectrum antiviral activity of epigallocatechin gallate, a bioactive compound from green tea, against highly pathogenic coronaviruses found in humans and animals. The…

Genetic basis of hight aroma

Genetic basis of high aroma and stress tolerance in the oolong tea cultivar genome

June 14, 2021

Tea plants (Camellia sinensis) are commercially cultivated in >60 countries, and their fresh leaves are processed into tea, which is the most widely consumed beverage in the world. Although several…

New Discovery Explanes

New Discovery Explains Antihypertensive Properties of Tea

March 25, 2021

A new study from the University of California, Irvine shows that compounds in both green and black tea relax blood vessels by activating ion channel proteins in the blood vessel…

Sufferings of Tea Leaves

June 29, 2020

Wine experts have a popular phrase — vine must suffer, meaning that in order to get good wine, the grape plant itself must grow in uncomfortable conditions. A similar principle…

Polyphenolic Composition in Leaves of Camellia Irrawadiensis

May 19, 2020

Japanese scientists conducted a comparative analysis of three camellias — C. sinensis, C. irrawadiensis and C.taliensis — to determine or clarify the differences between their polyphenolic and other chemical composition.…

Tea Compounds

Theanine Content and Related Gene Expression

February 16, 2020

Specialists from Nanjing Agricultural University continue their studies on the mechanisms determining different properties of tea cultivars. We wrote about their study on the content of ascorbic acid in tea…

Phytosterols and Fatty Acids in Camellias

November 21, 2019

Chinese scientists studied the sterol composition and the content of fatty acids in the oils obtained from the seeds of plants belonging to three different sections of the Camellia genus:…

On Saturating Guinea Pigs with Indian Tea

November 13, 2019

Indian scientists have undertaken a study on a group of guinea pigs. The animals spent a week of adaptation period on a polyphenol free diet. Then they were divided into…

Epigallocatechin-3-Gallate Helps Mice Swim Longer

November 5, 2019

Experts from Liaoning Normal University (Dalian, China) have conducted a study on the anti-fatigue effect of green tea polyphenols. To this end, four groups of mice (12 mice each) received…

World Caffeine Intake and Its Sources

October 3, 2019

Austrian and Australian (so as not to confuse) specialists supported by Red Bull GmbH have collected data from researches on caffeine consumption in different parts of the world, processed them…

Antioxidant Activities of Japanese Post-fermented Teas

August 28, 2019

Japanese scientists have studied four traditional Japanese post-fermented teas (awabancha, goishicha, ishizuchi-kurocha and batabatacha) and green tea as a control sample and found the following. The content of caffeine and…

A tricky system for recognizing the astringency of tea

March 30, 2019

Taiwanese experts took the challenge of creating a technique that allows to recognize the taste characteristics of tea without the participation of tea tasters. The prerequisites for such work are…

Radical scavenging activity of Yabukita and Benifuuki

March 11, 2019

German researchers have tested the ability of green teas made from Yabukita and Benifuuki cultivars to protect skin cells from the effects of free radicals. 32 people took part in…

Polyphenols

The most secret polyphenol knowledge

December 23, 2018

One English professor wrote a remarkable article in which he described the specificity of polyphenols as components of a diet. Among other interesting topics, the author of the article explains…

Tea Compounds

Alkenes, alkanes and other compounds in dark teas

December 23, 2018

Chinese scientists have compared the composition of aromatic volatiles forming the flavors of Chinese post-fermented teas — pu-erh, liubao, Ya’an Tibetan tea, jingweifu, fu zhuan and quingzhuan. And the aromas…

Polyphenols

Identification of epigallocatechin-3-O-methyl-gallate in a Korean tea cultivar

December 17, 2018

Epigallocatechin-3-O-methyl-gallate (or methylated catechin) is not as widely known as other catechins — components of tea. And this is not due to the fact that its name is more complicated.…

Effects of oolonghomobisflavan A on oxidation of low-density lipoprotein

December 11, 2018

One of the most important qualities of a tea man is the ability to see high poetry in the simplest and most common things. In the murmur of clear water…

Theanine vs. stress; caffeine and catechins vs. theanine

December 11, 2018

Japanese experts have conducted a pilot study of the anti-stress effect of tea with a lower content of caffeine and catechins. The matter is that theanine, contained in tea, in…

Microbiota

Bacterial Community in Chinese Dark Teas

December 10, 2018

Chinese experts have studied bacterial communities in Chinese dark teas. In total, 11 tea samples were studied: Fuzhuan brick-tea samples (from Hunan and Zhejiang), two samples of the Qingzhuan brick…

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