Teak (Tectona grandisL.f) is decay resistance and natural durability. These advantages are relationship with inclusion of teak. For breeding, planting, and the wood used to its best advantage by the end-user, further information concerning the heartwood extractive chemical of different provenances teak is necessary, However, because of limitation of analytical instruments, the extractive chemical components of teak centre on decay resistance relationship with napthoquinone, tectoquinone, and so on, nobody systematacially analyzed heartwood extractive chemical components of different teak. We analyzed and contrasted extractive chemical components of three provenances teak heartwood(Indian, Thailand and Nigeria), and found 109 peak and 74 compounds was identified, the same compounds of 3 provenances were 27. The main compounds were Mequinol, 1,2-benzenediol, 1(3H)-Isobenzofuranone, Vanillin, 1,4-Naphthalenedione, Naphthalene, 1,2,3,4,4a,5,6,8a- octahydro-7-methyl-4-methylene-1- (1- methylethyl), Cyclohexane, 1-ethenyl-1-methyl- 2-(1-methylethenyl)-4- (1- methylethylidene)-, 4,6-Dimethoxysalicylaldehyde, 2-Propenal, 3-(1,3-benzodioxol-5-yl)-, 4-((1E)-3-Hydroxy -1-propenyl) -2-methoxyphenol, 1H-Imidazole, 1-ethyl-, 2-Methylisoborneol, Phthalic acid, phenyl 2-pentyl ester, 1,4-Naphthalenedione, 2-hydroxy-3-(3-methyl-2-butenyl)-, [1,1'-Biphenyl]-2-ol, 5-(1,1-dimethylethyl)-, 9,10- Anthracenedione, 2-methyl-, 1-Hydroxy-4-methylanthraquinone, Indane-1,3-dione, 2-(3-hydroxyphenyl)- 2H-Benzopyran - 2-one, 4-methyl-3-phenyl-, 9,10-Anthracenedione, 1,8-dihydroxy-2-methyl-, 2-(Hydroxymethyl) anthraquinone, 4H-1-Benzopyran-4-one, 3-hydroxy-2-phenyl-, Benzofuran-3-one, 2-[3-hydroxy-4-methoxy benzylidene] -6-hydroxy-, Squalene, .gamma.-Sitosterol, 9,19-Cyclolanost-24-en-3-ol, (3.beta.)-, Cholest-8(14)-en-7-one, (5.alpha.)-.
a necessary process, there are many volatile organic compounds of Chinese fir biomass during hot drying to pollute environment and affect the health of the people. Therefore, the chemical components from Chinese fir biomass in simulated hot drying environment were identified by TD-GC/MS to find the possible utilization of the resources and reduce environmental pollution. The main constituents at 90°С were cedrol (25.2%), 1,2-benzenedicarboxylic acid, buty l 2-methylpropyl ester (4.62%), 4-imidazolidinone, 5-(phenylmethyl)- 2-thioxo-(3.87%), acetic acid (3.85%), 1-naphthalenepropanol, .alpha.-eth enyldecahydro-.alpha.,5,5,8a-tetra (3.03%), etc. The main constituents at 120°С were cedrol (30.54%), phenol, 2,4-bis (1,1-dimethylethyl) (3.89%), globulol (2.76%), benzofuran, 2,3-dihydro-(2.71%), cyclohexasiloxane, dodecamethyl- (2.70%), .alpha.- cadinol (2.65%), taurolidine (2.33%), 2,4,6-octatrien-1-ol, 3,7-dimethyl-(E,E)- (2.31%), etc. So the volatile organic compounds of Chinese fir biomass during hot drying could be used as biomedicine, bioenergy, and so on.
The inherent odor of teak wood has repellent, and has an obvious effects on animals and human. In this work, the weight loss of volatile substances of different provenances teak including India, Nigeria and Thailand has been studied by TGA. The emmision of volatile substances starts at 30°C and ends at 100°C, lossing weight of the all samples are very less in the range of 100-200°C. When the temperature is in the range of 200-250°C, the hemi-cellulose and cellulose is pyrolyzed and the char starts to form. The results all the curves of TGA for the teak samples is similar, the sapwood losing weight is clearly higher than the heartwood for the same provenance teak. The volatile substances of sapwood are ranked as follows:V3071> V3070> V3072> V8024> V3074> V1009> V3078> V1007, and the heartwood: V3074> V3070> V1009> V8024> V3072> V3071> V3078> V1007.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.