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White Tea
White tea may refer to one of several styles of tea which generally feature young or minimally processed leaves of the ''Camellia sinensis'' plant. Currently there is no generally accepted definition of white tea and very little international agreement on how it can be defined. Some sources use the term to refer tea that is merely dried with no additional processing. Therefore, white tea is very close to the natural state of the tea plant. Other sources use the term to refer to tea made from the buds and immature tea leaves picked shortly before the buds have fully opened and traditionally allowed to wither and dry under the sun, while others include tea buds and very young leaves which have been steamed or fired before drying. Most definitions agree, however, that white tea is not rolled or oxidized, resulting in a flavor characterized as "lighter" than most green tea, green or traditional black teas. In spite of its name, brewed white tea is pale yellow. Its name derives fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bai Hao Yinzhen Tea
Baihao Yinzhen (; pronounced ), also known as White Hair Silver Needle, is a white tea produced in Fujian, Fujian Province in China. Amongst white teas, this is the most expensive variety and the most prized, as only top buds (Shoot (botany), leaf shoot) of the Camellia sinensis plant are used to produce the tea.陳宗懋，中國茶經，pp 236，上海文化出版社，1992 Genuine Silver Needles are made from cultivars of the ''Da Bai'' (Large White) tea tree family. There are other productions that look similar with downy leaf shoots but most are green teas, and as green teas, they taste differently and have a different biochemical potency than the genuine white tea Silver Needle.袁弟順，中國白茶，廈門大學出版社，2006 It is commonly included among List of Chinese teas, China's famous teas. Possible origins In the early years of Jiaqing in the Qing Dynasty (AD 1796), Baihao Yinzhen was successfully cultivated from vegetable tea in Fuding. The export of Baih ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Camellia Taliensis
''Camellia taliensis'' (also known as Yunnan large leaf varietal tea, wild tea, Dali tea, Yunnan broad tea, Fried egg plant and others; 大理茶) is a small species of evergreen shrub whose leaves and leaf buds are used to produce tea. It is of the genus ''Camellia'' of flowering plants in the family Theaceae. ''C. taliensis'' is an important wild relative to the cultivated tea plant ''Camellia sinensis''. It also belongs to the same section ''Thea'' as ''C. sinensis''. The species is cultivated on many farms in Yunnan province in China and not considered endangered. However, its wild populations are shrinking due to human caused fragmentation of the plant's natural habitat and from the excessive harvesting of the leaves for the tea market. Nomenclature and taxonomy C. taliensis''' comes from the old name of Dali, Tali, where the plant is from. The plant is also known as Wild tea as it grows wild in forests, Dali tea again after the town, and Fried egg plant because of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silver Needle Tea
Baihao Yinzhen (; pronounced ), also known as White Hair Silver Needle, is a white tea produced in Fujian Province in China. Amongst white teas, this is the most expensive variety and the most prized, as only top buds ( leaf shoot) of the Camellia sinensis plant are used to produce the tea.陳宗懋，中國茶經，pp 236，上海文化出版社，1992 Genuine Silver Needles are made from cultivars of the ''Da Bai'' (Large White) tea tree family. There are other productions that look similar with downy leaf shoots but most are green teas, and as green teas, they taste differently and have a different biochemical potency than the genuine white tea Silver Needle.袁弟順，中國白茶，廈門大學出版社，2006 It is commonly included among China's famous teas. Possible origins In the early years of Jiaqing in the Qing Dynasty (AD 1796), Baihao Yinzhen was successfully cultivated from vegetable tea in Fuding. The export of Baihao Yinzhen started in 1891. Baihao Yinzhen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shou Mei Tea
Shoumei (; Standard Chinese pronunciation ) is a white tea that is produced from naturally withered upper leaf and tips, with a stronger flavor reminiscent of lighter oolong teas. It is mostly grown in Fujian Province and Guangxi Province in China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after .... Because it is plucked later than Bai Mudan, the tea may be darker in color, but it should still have a proportionate green color. Some lower grades of Shou Mei may be golden in color with many black and red leaves, making a darker brew with more depth. Technically this tea, being a fourth-grade tea, is a by-product of Baihao Yinzhen tea production and uses ''Da Bai'' or Large White leaves. __TOC__ Tasting and brewing The tea can be brewed very differently and there are many comb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baimudan Tea
Bai Mudan () is a type of white tea made from plucks each with one leaf shoot and two immediate young leaves (one bud two leaf ratio) of the ''Camellia sinensis'' plant.陳宗懋, 中國茶經, pp 236 上海文化出版社 Bai Mudan is sometimes preferred by white tea drinkers for its fuller flavor and greater potency than the other major type of white tea, Bai Hao Yinzhen. The latter is made purely with leaf shoots, and so it is comparatively softer and more subtle. The typical taste of Bai Mudan is a result of both the processing and the tea plant cultivars employed in the production. __TOC__ Production and processing The family of tea cultivars used in producing Bai Mudan are the "Da Bai" (大白) varietal. In eastern Fujian, the cultivar Fuding Da Bai is used. In northern Fujian, the Zhenghe Da Bai cultivar is used. The differences in the plant yield two distinct styles of Bai Mudan: the Fuding variety and the Zhenghe variety. Genuine Bai Mudan is a white tea; therefore, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baihao Yinzhen
Baihao Yinzhen (; pronounced ), also known as White Hair Silver Needle, is a white tea produced in Fujian Province in China. Amongst white teas, this is the most expensive variety and the most prized, as only top buds ( leaf shoot) of the Camellia sinensis plant are used to produce the tea.陳宗懋，中國茶經，pp 236，上海文化出版社，1992 Genuine Silver Needles are made from cultivars of the ''Da Bai'' (Large White) tea tree family. There are other productions that look similar with downy leaf shoots but most are green teas, and as green teas, they taste differently and have a different biochemical potency than the genuine white tea Silver Needle.袁弟順，中國白茶，廈門大學出版社，2006 It is commonly included among China's famous teas. Possible origins In the early years of Jiaqing in the Qing Dynasty (AD 1796), Baihao Yinzhen was successfully cultivated from vegetable tea in Fuding. The export of Baihao Yinzhen started in 1891. Baihao Yinzhen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pekoe
In the tea industry, tea leaf grading is the process of evaluating products based on the quality and condition of the tea leaves themselves. The highest grades for Western and South Asian teas are referred to as "orange pekoe" (abbreviated as "OP"), and the lowest as " fannings" or "dust". Pekoe tea grades are classified into various qualities, each determined by how many of the adjacent young leaves (two, one, or none) were picked along with the leaf buds. Top-quality pekoe grades consist of only the leaf buds, which are picked using the balls of the fingertips. Fingernails and mechanical tools are not used, to avoid bruising. Certain grades of leaf are better suited to certain varieties of tea. For example, most white tea is processed from the buds or shoots of the tea plant. When crushed to make bagged teas, the tea is referred to as "broken", as in "broken orange pekoe" ("BOP"). These lower grades include fannings and dust, which are tiny remnants created in the sorting a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CRC Press
The CRC Press, LLC is an American publishing group that specializes in producing technical books. Many of their books relate to engineering, science and mathematics. Their scope also includes books on business, forensics and information technology. CRC Press is now a division of Taylor & Francis, itself a subsidiary of Informa. History The CRC Press was founded as the Chemical Rubber Company (CRC) in 1903 by brothers Arthur, Leo and Emanuel Friedman in Cleveland, Ohio, based on an earlier enterprise by Arthur, who had begun selling rubber laboratory aprons in 1900. The company gradually expanded to include sales of laboratory equipment to chemist A chemist (from Greek ''chēm(ía)'' alchemy; replacing ''chymist'' from Medieval Latin ''alchemist'') is a graduated scientist trained in the study of chemistry, or an officially enrolled student in the field. Chemists study the composition of ...s. In 1913 the CRC offered a short (116-page) manual called the ''Rubber Handboo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catechin
Catechin is a flavan-3-ol, a type of secondary metabolite providing antioxidant roles in plants. It belongs to the subgroup of polyphenols called flavonoids. The name of the catechin chemical family derives from ''catechu'', which is the tannic juice or boiled extract of ''Mimosa catechu'' (''Acacia catechu'' L.f.). Chemistry Catechin possesses two benzene rings (called the A and B rings) and a dihydropyran heterocycle (the C ring) with a hydroxyl group on carbon 3. The A ring is similar to a resorcinol moiety while the B ring is similar to a catechol moiety. There are two chirality (chemistry), chiral centers on the molecule on carbons 2 and 3. Therefore, it has four diastereoisomers. Two of the isomers are in trans configuration, ''trans'' configuration and are called ''catechin'' and the other two are in cis configuration, ''cis'' configuration and are called ''epicatechin''. The most common catechin isomer is (+)-catechin. The other stereoisomer is (−)-catechin or ''en ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Health Effects Of Tea
In clinical research conducted during the early 21st century, the health effects of tea has been widely studied. Black tea is considered likely effective for improving alertness and possibly effective for certain conditions such as low blood pressure, but evidence does not support its effectiveness for preventing several types of cancer or diabetes; there is currently limited high-quality scientific evidence supporting most specific therapeutic uses of black tea. The United States Food and Drug Administration has approved a topical ointment formulated with a specific green tea extract for the treatment of external genital and perianal warts; although green tea and its extracts have been widely studied, the evidence remains inconclusive overall, with only modest or inconsistent benefits observed. Two reviews of randomized controlled trials concluded that long-term consumption of black tea slightly lowers Blood pressure, systolic and diastolic blood pressures (about 1–2 mmHg), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyphenols In Tea
The phenolic content in tea refers to the phenols and polyphenols, natural plant compounds which are found in tea. These chemical compounds affect the flavor and mouthfeel of tea. Polyphenols in tea include catechins, theaflavins, tannins, and flavonoids. Polyphenols found in green tea include, but are not limited to, epigallocatechin gallate, epigallocatechin gallate (EGCG), epigallocatechin, epicatechin gallate, and epicatechin; flavanols such as kaempferol, quercetin, and myricitin are also found in green tea. Catechins Catechins include epigallocatechin-3-gallate (EGCG), epicatechin (EC), epicatechin-3-gallate (ECg), epigallocatechin (EGC), catechin, and gallocatechin (GC). The content of EGCG is higher in green tea. Catechins constitute about 25% of the dry mass of a fresh tea leaf, although total catechin content varies widely depending on species, clonal variation, growing location, season, light variation, and altitude. They are present in nearly all teas made from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
