Chemistry of wood
Ramin Vaysi; Majid Kiaei; Sayed Sajad Ashrafi; Amin Jourbandian
Abstract
The aim of this study was accomplished on identification and comparison of the phenolic chemical components in wood of Siberian elm, Common elm and Mountain elm tree. For this purpose, the samples were chosen randomly from of elm trees in Nowshahr's forest region. Then, flour and ash were provided from ...
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The aim of this study was accomplished on identification and comparison of the phenolic chemical components in wood of Siberian elm, Common elm and Mountain elm tree. For this purpose, the samples were chosen randomly from of elm trees in Nowshahr's forest region. Then, flour and ash were provided from these woods of species (separate) by TAPPI standards. After samples prepared, samples were injected to the GC/MS device for it analysis. Identification of compounds was done by retention time of each compound, calculation of Quats index and Adams table. The result of GC-MS showed that there were 116, 41 and 18 compounds in wood of Siberian elm, Common elm and Mountain elm tree, respectively. That 5-Hydroxy-calamenen (21.23%), 1-Naphthalen carboxylic acid (15.41%), Naphthalene (0.96%) and phthalate (1.00%) were the most important compounds in wood of Siberian elm. The 5,6,7,8-tetrahydro-2,5-dimethyl-8-(1-methylethyl)-1-Naphthalenol(18.59%), Gamma-Sitosterol (13.44%), bis (2-ethylhexyl) phthalate (12.28%) and 1-Naphthalen carboxylic acid (5.73%) were the most important compounds in wood of Common elm, too. There were the bis (2-ethylhexyl) phthalate (93.40%), 4-(N-Isopropylamino)-6-phenyl (1.89%), 5, 6, 7, 8-tetrahydro-1-naphthalenol (1.80%) and 8-methoxy-1-acetonaphthone (0.27%) as the most important compounds in wood of Mountain elm tree. In addition, the results showed that 9,12-Octadecanoic acid, Hexadecane, Dodecan, Tetradecan, 1-Naphthalen carboxylic acid and bis (2-ethylhexyl) phthalate were the 6 common compounds in the wood of Siberian elm and Common elm tree. There were the Qoinindolin, Tetradecan, Hexadecanoic acid and bis (2-ethylhexyl) phthalate were the 4 common compounds in the wood of Siberian elm and Mountain elm tree. There were the Tetradecan, Hexadecanoic acid and bis (2-ethylhexyl) phthalate were the 3 common compounds in the wood of Common elm and Mountain elm tree, too. The gas chromatographs showed that Tetradecan and bis (2-ethylhexyl) phthalate were the 2 common compounds in three spices of elm trees.
Ramin Vaysi; Seyed Eshagh Ebadi; Sayed Sajad Ashrafi
Abstract
Sycamore tree (Platanus orientalis) is one of the species that planted in parks and urban green spaces and forests region of Tehran and other cities in Iran. The aim of this study was to identify and compare the phenolic chemical components in wood and bark of planted sycamore tree. In this study, ...
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Sycamore tree (Platanus orientalis) is one of the species that planted in parks and urban green spaces and forests region of Tehran and other cities in Iran. The aim of this study was to identify and compare the phenolic chemical components in wood and bark of planted sycamore tree. In this study, three trees were randomly selected and felled in planted forest region of Tehran. Three disks were prepared from each tree and according to TAPPI standard tests, first wood flour and then the extractive (%) were separated from wood flour using acetone solvent. To identify of extractives, about 1mg extractives was mixed with 30 microliters BSTFA and the samples were analyzed using a gas chromatograph connected to mass spectrometry (MS) with a detector. Samples were then injected into the injection section of GC/MS using a Hamilton syringe. The compounds identification was performed using GC diagrams, abundance and retention time of each compound, calculation of quartz index and Adams table. The results showed that the average of extractives in wood and bark of the planted oriental plane tree were 3.6 and 16.6 percent, respectively. GC-MS results showed that 17 specification compounds were found in the plane wood. Furthermore, Hexadecanoic acid (22.18%), Heptadecan-8-carbonic acid (15.24%), and 1, 2-Benzenedicarboxylic acid (12.08%) were the most important compounds. The 41 compounds were identified in the plane bark that 9-Octadecanoic acid (19.88%), n-Hexandecanoic acid (16.41%), 9, 12-Octadecanoic acid (9.66%) and Gamma-Sitosterol (2.09%) were the most important compounds. In addition, the results showed that 9-Octadecanoic acid, Hexadecane, Dodecan, Tetradecan, Eicosan, Octadecane, and Decane were the 6 common compounds in the wood and bark of sycamore tree, as well
