Doc:Tea/Others

Latest revision as of 20:46, 5 December 2011

[edit] Tea from genus Ilex (holly trees)

[edit] Ku-Ding Tea

In China and Japan, leaves of Ilex kudingcha C. J. Tseng, I. cornuta (Chinese holly), and I. latifolia Thunb. are used for the Ku-Ding Tea. Its extreme bitterness comes from triterpene saponins, mainly those derived from ursolic acid. A purified saponin fraction of Ilex pubescens root is known to exhibit anti-inflammatory and analgesic effects.^[1] The effect of leaf extract is still unknown.

[edit] Mate Tea

In Brazil and Paraguay, leaves of Ilex paraguayensis or I. paraguensis or I. paraguariensis are used for Mate tea.^[2] It is also called yerba mate and contains caffeine, caffeic acid and chlorogenic acids (in contrast to what is believed, no tannin is included ^[2]). The plant was first cultivated and became widespread by Jesuit missionaries after Spanish conquest.^[3]

[edit] Yaupon, asi or Black Drink

Indians of the South-Eastern United States used leaves of Ilex cassine, I. vomitoria, and I. dahoon to brew a spiritual drink called Yaupon or black drink. The drink was believed to cause sweat and vomiting but its active ingredient is caffeine. In proper dilution, the drink was used as stimulant during the civil war in Southern North America.^[2]

1. ↑ Wang JR, Zhou H, Jiang ZH, Wong YF, Liu L (2008) In vivo anti-inflammatory and analgesic activities of a purified saponin fraction derived from the root of Ilex pubescens. Biol Pharm Bull 31(4):643-50
2. ↑ ^{2.0 2.1 2.2} Martin H (1977) The history of Ilex with special reference to Australia. Australian Journal of Botany 25,655-673
3. ↑ Herzfeld H (1920) Ilex paraguensis or la yerba mate. Pharm Era 53,353-354

[edit] Tea from family Myrtaceae

[edit] Guaba Tea

The guava tea, or leaves of guava tree (Psidium guajava), is said to reduce the blood glucose level through its polyphenols. In Japan, it is officially recognized as Foods for Specified Health Use (FOSHU), but no refereed journal article is found in Medline about its function. Many commercial sites promote its anti-allergic (esp. pollen allergy) effect, but no effect was found in 2-week activity test using rats ^[1].

[edit] Syzygium Tea

Syzygium Tea, which is sold for its anti-allergic effect, is made from genus Syzygium in Myrtaceae. Because the culinary herb 'Clove' is Syzygium aromaticum, you can consider this tea as 'Clove' tea.

[edit] Tea from family Fabaceae

[edit] Rooibos Tea

Rooibos tea is dried and oxidized leaves of Aspalathus linearis. It contains no caffeine or tannins, and no effect to drug metabolism is reported ^[1]. A unique flavonoid 'aspalathin' is isolated from this plant ^[2]

1. ↑ ^{1.0 1.1} Matsuda K, Nishimura Y, Kurata N, Iwase M, Yasuhara H (2007) Effects of continuous ingestion of herbal teas on intestinal CYP3A in the rat. J Pharmacol Sci 103(2):214-21
2. ↑ Koeppen BH, Roux DG (1966) C-glycosylflavonoids. The chemistry of aspalathin. Biochem J 99(3):604-9
   Bramati L, Minoggio M, Gardana C, Simonetti P, Mauri P, Pietta P (2002) Quantitative characterization of flavonoid compounds in Rooibos tea (Aspalathus linearis) by LC-UV/DAD. J Agric Food Chem 50(20):5513-9

[edit] Other teas

[edit] Tencha (Rose family, )

Tencha is dried leaves of Rubus suavissimus S. Lee (Category:Rosaceae or rose family) originally from southern China. It contains a sweet stevioside, called rubinoside. It is often used to reduce pollen allergy in Japan, but its in vitro activity is known to be less than the fruit hull of mangosteen (Garcinia mangostana L.)^[1]

1. ↑ Nakatani K, Atsumi M, Arakawa T, Oosawa K, Shimura S, Nakahata N, Ohizumi Y (2002) Inhibitions of histamine release and prostaglandin E2 synthesis by mangosteen, a Thai medicinal plant. Biol Pharm Bull 25(9):1137-41

[edit] Tea from genus Camellia

[edit] Black Oolong

Black oolong tea is roasted standard oolong tea. See here for details.

[edit] Misc. in Japan

茶の種子や花にはサポニン成分が含まれており、点てると泡を生じる。

References

1. ↑ 第2回国際茶花シンポジウム抄録集、pp.3-5