Teak-wood

Oroxylum indicum [leaf] (Bignoniaceae), Cassia senna (Fabaceae), Aloe vera, A. spp., Asphodelus microcarpus [tuber], Xanthorrhea australis [flower] (Liliaceae), Rheum spp. (Polygonaceae), Tectona grandis [teak wood] (Verbenaceae) Angelica archangelica [root],... 

Figure 9.1.3. The content of H, G and S in different lignins and wood samples obtained using Py-GC, nitrobenzene oxidation, and FTIR. The samples are BeL= Beech mw lignin, Bew= Beech wood, SpL= Spruce MW lignin, Spw= Spruce wood, BaL= Bamboo MW lignin, Baw= Bamboo wood, TeL= Teak HCI lignin, Tew= Teak wood. (NA = not analyzed).

Bhat KM (1999) Is fast grown teak inferior in wood quality An appraisal from plantations of low input management. Wood News, 5(4), 27-31 Bhat KM, Priya P and Rugmini P (2001) Characterisation of juvenile wood in teak. Wood Science and Technology, 34 517-32... 

Laboratory Tables The provision of laboratory tables as a must for each laboratory. The taps of laboratory tables be preferably made to teak wood. However other hard wood such as sheesham or deodar can also be used for making tops of laboratory tables. These tops are generally 1" thick. Other parts of the table i.e. legs, drawers etc. may be made of any other type of locally available wood. Plywood or hardboard can also be used for drawers. In chemistry laboratory such drawers are provided with the laboratory tables. 

Methylanthraqulnone. 2-Methyl-9,IO anthro-cenedione /5-methylamhraquinone. C jH,0Oj mol wt 222.23. C 81.06%, H 4.54%, O 14,40%. Occurs in teak-wood. Prepd by oxidaiion of 2-methylanthracene by formation from phthalic anhydride and toluene Fieser, Org. 

CgHjNOj, Mr 127.14, mp. 274°C (decomp.), [a] -288° (H2O) hydrochloride rap. 264°C, [a]g -90.1° (HjO). Non-proteinogenic amino acid first isolated from Rhodesian teak wood Baikiaea plurijuga (Faba-ceae) and later also from Caesalpinia tinctoria and red algae. B. inhibits the activity of glutamic acid as neurotransmitter. ... 

Tectoquinone 2-methylanthraquinone, a yellow anthraquinone, m.p. 179°C, present in teak wood. It is one of the few nonhydroxylated, naturally occurring anthraquinones. Oiring to its content of T., teak is largely resistant to termites and fungi. 

Fig 1. Airborne contact dermatitis due to teak wood dust... 

Teak wood is one of the most valuable timbers of the world. While native to Burma, India, Thailand and Malaysia, it also has been planted in South Africa and the West Indies. Due to its strong durability, it is used in furniture, exterior joinery, flooring, fittings, door and window frames, rails, shipbuilding, bridges and wharves. Teak is resistant to termites and chemicals and, therefore, can be used outdoors and for laboratories too. 

The volatUo constituent of teak-wood to which the name tectoquinone has been given has been found to be identical with 2-methylanthra-quinone (Kafnku, Sebe, Bvil. Chem. Soc. Japan, 1932, 7, 114). 

Kanazawa H, Hakagami T, Nobashi K, Yokota T 1978 [Study on the gluing the wood. XI. The effects of teak wood extractives on the curing reaction and the hydrolysis rate of the urea resin adhesive.] Mokuzai Gakkaishi 24 55-59... 

Eucalyptus wood Olive wood Oak bark Beech wood Birch wood Alder tree Quaking aspen Teak wood tree Black wattle tree Sisal tree trunk... 

K. Sewda, S. N. Maiti, Mechanical Properties of Teak Wood Flour-Reinforced HDPE Composites. J. ofAppl. Polym. Sci. 112 (3), 1826-34 (2009). 

The name baikianine comes from Baildaea plurijuga, teak wood from which this amino acid has been isolated for the first time. Figure 133 Non-protein amino acids, ureido-amino acids and betaines of the Cryptonemiales. 

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