Difference between revisions of "White tea"

From Teapedia
Jump to navigation Jump to search
Line 1: Line 1:
 
[[Image:Bai Hao Yin Zhen tea leaf (Fuding).jpg|thumb|right|250px|White [[Bai Hao Yinzhen tea|Bai Hao Yinzhen]] tea leaves.]]
 
[[Image:Bai Hao Yin Zhen tea leaf (Fuding).jpg|thumb|right|250px|White [[Bai Hao Yinzhen tea|Bai Hao Yinzhen]] tea leaves.]]
'''White tea''' (Chinese: [[wikt:白茶|白茶]]) is a lightly oxidized [[tea]] grown and harvested primarily in China, mostly in the Fujian province. More recently it is grown in Taiwan, Northern Thailand and Eastern Nepal.  
+
'''White tea''' (Chinese: [[wikt:白茶|白茶]]) is a lightly oxidized [[tea]] grown and produced primarily in China. White tea from Fujian province is the most renown. More recently it is also grown in Taiwan, India,  Northern Thailand and Eastern Nepal.  
  
White tea comes from the buds and leaves of the Chinese ''[[Camellia sinensis]]'' plant. The leaves and buds are allowed to wither in natural sunlight before they are lightly processed to prevent oxidation or further tea processing.
+
White tea comes from the buds and leaves of the "Da Bai" [[cultivar]] of Chinese ''[[Camellia sinensis]]'' plant. The leaves and buds are allowed to wither before they are lightly processed to prevent oxidation or further tea processing.
  
The name "white tea" derives from the fine silvery-white hairs on the unopened buds of the tea plant, which gives the plant a whitish appearance. The beverage itself is not white or colourless but pale yellow.
+
The name "white tea" derives from the fine silvery-white hairs on the leaf shoots of the tea plant, which gives the plant a whitish appearance. The liquor of white tea is pale yellow to light orange depending of type and age.
  
 
== History ==
 
== History ==
Scholars and tea merchants generally disagree as to when the first production of white tea (as it is understood in China today) began. What is today known as white tea may have come into creation in the last two centuries.  White tea may have first appeared in English publication in 1876, where it is categorized as a [[black tea]] because it is not initially cooked like a [[green tea]], to deactivate internal enzymes and external microbes.
+
Scholars and tea merchants generally disagree as to when the first production of white tea (as it is understood in China today) began. What is today known as white tea may have come into creation in the last two centuries.  White tea may have first appeared in English publication in 1876, where it is categorized as a [[black tea]] because it's not immediately after harvest roasted like [[green tea]] to prevent oxidation (kill green).
 
 
White tea is often being sold as ''Silvery Tip Pekoe'', a form of its traditional name, and now also under the simple designations ''China White'' and ''Fujian White''.
 
 
 
== Contents ==
 
Because white tea is derived from the ''[[Camellia sinensis]]'' plant, it contains polyphenols, a phytonutrient that is thought to be responsible for the tea’s health benefits.
 
  
 
=== Catechins ===
 
=== Catechins ===
White tea contains high levels of catechins, some of which reduce the occurrence of atherosclerotic plaques and the severity of stroke in non-human studies.
+
White tea contains high levels of [[catechins]], some of which reduce the occurrence of atherosclerotic plaques and the severity of stroke in non-human studies.
  
 
== Manufacturing ==
 
== Manufacturing ==
Line 22: Line 17:
  
 
White tea belongs to the group of tea that does not require panning, rolling or shaking. However, the selection of raw material in white tea manufacture is extremely stringent; only the plucking of young tea leaves with much fine hair can produce good-quality white tea with lots of pekoe.
 
White tea belongs to the group of tea that does not require panning, rolling or shaking. However, the selection of raw material in white tea manufacture is extremely stringent; only the plucking of young tea leaves with much fine hair can produce good-quality white tea with lots of pekoe.
 
== Health ==
 
 
[[Image:Bai Hao Yinzhen or Silver needle White Tea.JPG|302px|thumb|right|The visible white hairs are a unique characteristic of the [[Bai Hao Yinzhen tea]]]]
 
 
Like black and green tea, white tea is also derived from ''[[Camellia sinensis]]''. Thus, white tea shares many of the same chemical properties and [[health effects of tea]]. The particular amount and ratio of the polyphenol compounds found in tea varies widely from one type of white tea to another, frequently overlapping with chemical compositions found in green tea. This is due both to the variation between strain of ''[[Camellia sinensis]]'', as well as the preparation process itself. These compounds have been shown to protect against certain types of cancer both ''in vitro'' and ''in vivo''.
 
 
===Improved cardiovascular function===
 
Catechins, a group of polyphenol antioxidants found in white tea, have been found to reduce cholesterol, decrease blood pressure, and improve the function of blood vessels, thereby decreasing the risk of cardiovascular disease.
 
 
===Antibacterial and antiviral action===
 
White tea has been shown to protect animals from certain pathogenic bacteria, such as ''Salmonella tryphimurium''.
 
 
=== Studies ===
 
A 2004 study at Pace University revealed that white tea extract may help slow viruses and bacterial growth, thus reducing the incidence of staphylococcus and streptococcus infections, pneumonia, fungus growth, and even dental plaque.
 
 
Findings from another study conducted at the Skin Study Center at University Hospitals of Cleveland and Case Western Reserve University reveal indicators that white tea helps skin cells by boosting immune systems when exposed to harmful ultra-violet radiation.
 
 
An article published in the ''Carcinogenesis'' journal by scientists from the Linus Pauling Institute at Oregon State University found that consumption of moderate amounts of white or green tea may hedge against colon tumors consistent with the prescription drug, sulindac. When used in combination with the drug, the results were more effective.
 
 
A study at Kingston University in 2009  showed that white tea has high anti-inflammatory, antioxidant, anti-collagenase, and anti-elastase properties which could potentially reduce the risks of developing rheumatoid arthritis, some cancers, heart disease and slow the enzymatic break-down of elastin and collagen] traits which accompany aging.
 
  
 
==See also==
 
==See also==

Revision as of 14:38, 11 October 2013

White Bai Hao Yinzhen tea leaves.

White tea (Chinese: 白茶) is a lightly oxidized tea grown and produced primarily in China. White tea from Fujian province is the most renown. More recently it is also grown in Taiwan, India, Northern Thailand and Eastern Nepal.

White tea comes from the buds and leaves of the "Da Bai" cultivar of Chinese Camellia sinensis plant. The leaves and buds are allowed to wither before they are lightly processed to prevent oxidation or further tea processing.

The name "white tea" derives from the fine silvery-white hairs on the leaf shoots of the tea plant, which gives the plant a whitish appearance. The liquor of white tea is pale yellow to light orange depending of type and age.

History

Scholars and tea merchants generally disagree as to when the first production of white tea (as it is understood in China today) began. What is today known as white tea may have come into creation in the last two centuries. White tea may have first appeared in English publication in 1876, where it is categorized as a black tea because it's not immediately after harvest roasted like green tea to prevent oxidation (kill green).

Catechins

White tea contains high levels of catechins, some of which reduce the occurrence of atherosclerotic plaques and the severity of stroke in non-human studies.

Manufacturing

The base process for manufacturing white tea is as follows:

Fresh tea leaf → Withering → Drying (air drying, solar drying or mechanical drying) → White tea

White tea belongs to the group of tea that does not require panning, rolling or shaking. However, the selection of raw material in white tea manufacture is extremely stringent; only the plucking of young tea leaves with much fine hair can produce good-quality white tea with lots of pekoe.

See also

External Links