Thea sinensis

Hatanaka, A. and Kajiwara, T., Occurrence of trans -3-hexenal in Thea sinensis leaves. Z. Naturforeshung, 36 755, 1981. 

The tea plant, Thea sinensis, has provided a desirable beverage for centuries but it is also used as a colorant. Extracts of tea contain a very complex mixture of glycosides of myricetin, quercitin and kaempferol, epicatechin, epigallocatechins, acyl acids and many other polyphenol compounds.33 In black tea, the above compounds may act as precursors to the poorly defined compounds thearubin and theaflavin. 

Caffeine Caffeine, 1,3,7-trimethybcanthme (23.3.6), is the most widely used CNS stimulant. It is an alkaloid in tea leaves Thea sinensis), in coffee beans Cojfea arabica), in... 

CS030 Euit, Y., S. Eujita and H. Yoshikawa. Comparative biochemical and chemi-cal-taxonomical studies of the plants of Theaceae. 1. Essential oils of Camelliasasanqua, C. japonica and Thea sinensis. Osaka Kogyo Gijutsu Shiken- CS042 shoKiho 1974 25 198. 

CS033 Suzuki, T. and E. Takahashi. Metabo- CS044 lism of xanthine and hypoxnthine in the tea plant (Thea sinensis). Biochem J 1975 146 79. 

CS034 Kajiwara, T., T. Harada and A. CS045 Hatanaka. Isolation of Z-d-hexenal in tea leaves, Thea sinensis, and synthesis thereof. Agr Biol Chem 1975 39 243. 

Hatanaka, A., T. Kajiwara and J. Sekiya. Biosynthesis of trans-2-hex-enal in chloroplasts from Thea sinensis. Phytochemistry 1996 15 1125. Matsura, T., T. Tsunoda and M. Arai. Theanine manufacture with tissue cultures of tea. Patent-Japan Kokai Tokkyo Koho-03 187,388 1991 7 pp. Takeo, C., H. Kinugass, H. Oosu, T. Kawasaki, N. Takakuwa, M. Shimizu and H. Kondo. Extraction of hyper-glycemics from tea. Patent-Japan Kokai Tokkyo Koho-04 124,139 1992 8 pp. Stalcup, A. M., K. H. Ekborg, M. P. Gasper and D. W. Armstron. Enantiomeric separation of chiral components reported to be in coffee, tea or... 

CS090 Abe, H., T. Morishita, M. Uchiyama, S. Takatsuto and N. Ikekawa. A new brassinolide-related steroid in the leaves of Thea sinensis. Agr Biol Chem... 

CS103 Chaboud, A., J. Rayaud, L. Debourcieu and J. Reynaud. The presence of apigenin-2 -0-glucosyl-6-C-glucosylapigenin or 2 -)-glucosylisovi-texin in the leaves of Thea sinensis Sims. var. macrophylla. Pharmazie 1986 41(10) 745-746. 

Matsumoto. Two 3-oxO Steroids in Thea sinensis seeds. Phytochemistry 1981 20 175-176. CS142... 

CS156 Chaboud, A., ]. Raynaud and L. Debourcieu. 6,8-Di-C-beta-D-arabino-pyranosyl apigenin from Thea sinensis var. macrophylla. J Nat Prod 1986 49(6) 1145. 

Camellia bohea Griff. C. sinensis (L.) Kuntze C. theifera Griff. C. viridis Link. Cha (Tea) See Thea sinensis ... 

The structure of caccigenin has been revised to (99). It occurs in Caccinia glauca with the related lactone (100). Full papers have appeared on acerotin and acerocin, acacic acid, and the sapogenols of Thea sinensis ... 

Thea sinensis var. Eastern Asia Bohea and yiridis... 

From the above results, it was apparent that for the production of hydrolyzable tannins using such liquid cultures (hairy root, adventitious root and shoot) further investigations will be required. Concerning the production of flavan-3-ols contained in the roots of this plant, the hairy root culture was the most useful method of those tested. The constitution of the flavan-3-ols found in the plant and the hairy roots and shoot cultures of P. mruri arc very similar to that observed in leaves of Thea sinensis (green tea) (97). Cultures of P. mruri might also have the same pharmacological effects as those expected from tea leaves (eg. 98,99). 

Theophylline is a potent methylxanthine. Methyl-xanthines are widely distributed in the plant world in plants such as Thea sinensis, Coffea Arabica (coffee), and Theobroma cacao (coco, chocolate). 

Microanalytical techniques, consisting of methaneboronation of the vicinal hydroxyls ( bismethaneboronate or methaneboronate-TMS-ether ) have been developed by Takatsutoet al. for the GC/MS or GC/SIM of brassinosteroids (16). Consequently brassinone (15), 24-ethylbrassinone (12) and 28-norbrassinolide (14) were detected by GC/MS without isolation from Chinese cabbage ( Brassica campestris ), green tea ( Thea sinensis ) and chestnut insect galls ( Distilium racemosum ) (17-19). The presence of brassinolide and castasterone in the tissues of these plants has been also detected. 

A combination of the rice lamina inclination assay and GC/MS or GC/SIM analyses have allowed for identification of the brassinosteroids in various plant tissues These include brassinolide, 6-deoxodihydrocastasterone, brassinone from the insect galls of Castanea crenata (18,20) castasterone and 6-deoxodihydrocastasterone from the stems, leaves and flowers of Castanea crenata (20) brassinolide, castasterone, typhasterol (7), and teasterone (8) from leaves of Thea sinensis (21-23) castasterone and brassinone from the fruit of Pharbitis purpurea ( Japanese morning glory ) (24) brassinolide, castasterone and 24-epibrassinolide(29) from immature seed and/or pollen of Vida faba (broad bean ) (25,26) brassinolide and castasterone from the pollen of Alnus glutinosa (European alder) (27). 

Caffeine, theophylline and theobromine are the three important members of the xanthine diuretics, which are commonly foimd in the common beverages viz., coffee Coffee arabica), coca-cola Cola acuminata) and cocoa Theobroma cacao) contain caffeine tea Thea sinensis) contains caffeine and theophylline and cocoa Theobroma cacao) contains theobromine. 

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