Tea plant

A tree with evergreen leaves, that can reach 10 to 30 m for certain varieties - Alternative, evergreen, elongated and elliptical leaves (4-15 cm x 2-7 cm) that are glossy and dark green, quite tough, and with a relatively thick texture - White to pale yellow flowers that grow individually or in small groups of 3 to 4.

Latin name

Camellia sinensis (L.) Kuntze

Origin

Far Orient - The tea plant grows in acidic soils at between 1000 and 2000 metres of altitude, in a hot and humid climate.

Used part

The leaves.

Active components

Catechins (epigallocatechin gallate, epigallocatechin): these powerful antioxidants have a protective effect on our organs. Moreover, they support the combustion of fats.

Flavonoids: have an antioxidant effect. Polyphenols: have an antioxidant effect.

Phenolic acids: have an antioxidant effect.

Alcaloids (caffeine): like in coffee, caffeine has a stimulating, toning effect.

Usage

Tea is probably the most commonly consumed popular and toning drink after water. Green tea is different from black tea in the sense that it has practically not been fermented. Thanks to this, its main ingredients are protected from oxidation. Black tea is traditionally consumed. Green tea is becoming increasingly popular. In any event, if you want to make the most of the beneficial ingredients of tea, do not add any milk as it will bind with the catechins and inhibit their function. The quantity of catechins in the tea will depend on how long you brew the tea. The first minutes mainly release the olfactory, taste-related and stimulant properties. The catechins are only released afterwards. This is when you will notice the bitter taste and astringent effect in the mouth. The powerful antioxidants in green tea are thanks to the polyphenols that protect the cells against free radicals and that therefore contribute to the beneficial health effects. _1-10 Both green tea and black tea have a diuretic effect. ₁₁

Bibliographical references

The comparison of effect of catechins and green tea extract onoxidative modification of LDL in vitro.
Ostrowska J, Skrzydlewska E.
Adv Med Sci. 2006;51:298-303.
Pubmed: http://www.ncbi.nlm.nih.gov/pubmed/17357329
Regeneration of alpha-tocopherol in human low-densitylipoprotein by green tea catechin.
Zhu QY, Huang Y, Tsang D, Chen ZY.
J Agric Food Chem. 1999 May;47(5):2020-5.
Pubmed: http://www.ncbi.nlm.nih.gov/pubmed/10552489
The in vivo antioxidant and antifibrotic properties ofgreen tea (Camellia sinensis, Theaceae).
Tsai CF, Hsu YW, Ting HC, Huang CF, Yen CC.
Food Chem. 2013 Feb 15;136(3-4):1337-44.
Pubmed: http://www.ncbi.nlm.nih.gov/pubmed/23194532
Antioxidant and antibacterial properties of green, black,and herbal teas of Camellia sinensis.
Chan EW, Soh EY, Tie PP, Law YP.
Pharmacognosy Res. 2011 Oct;3(4):266-72.
Pubmed: http://www.ncbi.nlm.nih.gov/pubmed/22224051
Eur J Clin Nutr. 1996 Jan;50(1):28-32.
In vivo antioxidant effect of green and black tea in man.
Serafini M, Ghiselli A, Ferro-Luzzi A.
Pubmed: http://www.ncbi.nlm.nih.gov/pubmed/8617188
Bioavailability and antioxidant activity of tea flavanolsafter consumption of green tea, black tea, or a green tea extractsupplement.
Henning SM, Niu Y, Lee NH, Thames GD, Minutti RR, Wang H, GoVL, Heber D.
Am J Clin Nutr. 2004 Dec;80(6):1558-64.
Pubmed: http://www.ncbi.nlm.nih.gov/pubmed/15585768
Consumption of green tea causes rapid increase in plasmaantioxidant power in humans.
Benzie IF, Szeto YT, Strain JJ, Tomlinson B.
Nutr Cancer. 1999;34(1):83-7.
Pubmed: http://www.ncbi.nlm.nih.gov/pubmed/10453446
In vivo antioxidant effect of green tea.
Sung H, Nah J, Chun S, Park H, Yang SE, Min WK.
Eur J Clin Nutr. 2000 Jul;54(7):527-9.
http://www.ncbi.nlm.nih.gov/pubmed/10918460
Tea catechin supplementation increases antioxidantcapacity and prevents phospholipid hydroperoxidation in plasma ofhumans.
Nakagawa K, Ninomiya M, Okubo T, Aoi N, Juneja LR, Kim M,Yamanaka K, Miyazawa T.
J Agric Food Chem. 1999 Oct;47(10):3967-73.
Pubmed: http://www.ncbi.nlm.nih.gov/pubmed/10552751

10. A single dose of tea with or without milk increasesplasma antioxidant activity in humans.
Leenen R, Roodenburg AJ, Tijburg LB, Wiseman SA.
Eur J Clin Nutr. 2000 Jan;54(1):87-92.
Pubmed: http://www.ncbi.nlm.nih.gov/pubmed/10694777
Oral diuretic activity of hot water infusion of SriLankan black tea (Camellia sinensis L.) in rats.
Abeywickrama KR, Ratnasooriya WD, Amarakoon AM.
Pharmacogn Mag. 2010 Oct;6(24):271-7.
Pubmed: http://www.ncbi.nlm.nih.gov/pubmed/21120027

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