Ramin Vaysi; Behrooz Malekian; Masih Masoudifar
Abstract
The aim of this study was accomplished on identification and comparison of chemical compounds in heart wood and bark of mulberry tree. For this purpose, the samples were chosen randomly from heart wood and bark of mulberry tree in Nowshahr's forest region. Then, flour and ash were provided from heart ...
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The aim of this study was accomplished on identification and comparison of chemical compounds in heart wood and bark of mulberry tree. For this purpose, the samples were chosen randomly from heart wood and bark of mulberry tree in Nowshahr's forest region. Then, flour and ash were provided from heart wood and bark of mulberry tree by TAPPI standards. For measured metallic ions, first the mineral compound of ash dissolved by 65% nitric acid and for its identified by atomic absorption method. The results showed that zinc ion in heart wood of mulberry tree was more than its bark, but manganese and iron ions were lower and its cupper ion was same. Then extractives were separated from wood flour by acetone and extractives residue transferred to glass vial and was added BSTFA reactive agent to it. 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 are 30 compounds in bark of mulberry tree, that beta-Tocopherol(40.86%), bis (2-ethylhexyl)phthalate(11.2%), 9,12-Octadecadienoic acid(9.12%) and Triphenyl phosphine(9.82 were important components. 93 components identified heart wood of mulberry tree that resorcinol(79.47), methyl diphenyl methane(12.06%), p-xylene(0.06%) and gibberllin A3 (0.15%)di-limonene, as important components. These compounds can very important in durability and consumption its. Comparison of chromatograms showed that 1,2-benzenedicarboxylic acid was exists as a common components in heart wood and bark of mulberry tree.
Chemistry of wood
Ramin Vaysi; Farzad Yousefi
Abstract
The aim of this study was accomplished on identification and comparison of chemical compounds in wood of Alnus subcordata and Alnus subglotinosa. For this purpose, the samples were chosen randomly from Alnus subcordata and Alnus subglotinosa in Nowshahr's forest region. So that, first, flour and extractives ...
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The aim of this study was accomplished on identification and comparison of chemical compounds in wood of Alnus subcordata and Alnus subglotinosa. For this purpose, the samples were chosen randomly from Alnus subcordata and Alnus subglotinosa in Nowshahr's forest region. So that, first, flour and extractives by acetone were provided by TAPPI standards methods. Then, extractives residue transferred to glass vial and was added BSTFA reactive agent to it. After 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 are 99 compounds in alnus subcordata, so that, dibutyl phthalate (9.15%), 2,2-oxybis-ethanol(6.62%), 1,2-benzendicarboxylic acid(2.63%) and squalene(0.48%) were important compounds. In alnus glutinosa, from 127 indentified compounds, butanedioic, monomethyl ester(10.88%), isopropenoxypropan-2-ol(8.82%),3,5-dioxaundecane(7.73%),gamma-sitosterol (3.53%) and vanillin(0.39%) were important compounds. Comparison of chromatograms mention samples showed that there are 12 common components in Alnus subcordata and Alnus subglotinosa, that tetradecane, hexadecane,heptadecane, isopropenoxypropan-2-ol and bis(2-ethylhexyl)phthalate were important components. Some of these compounds can very important in durability and consumption Alnus subcordata and Alnus subglotinosa.
Chemistry of wood
Ramin Vaysi
Abstract
The aim of study was accomplished on identification and comparison of chemical compounds in wood and bark of oak. For this purpose, the samples were chosen randomly from oak in Nowshahr forest region. Then, flour and ash were provided from heart wood, sap wood and bark of oak by TAPPI standards. For ...
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The aim of study was accomplished on identification and comparison of chemical compounds in wood and bark of oak. For this purpose, the samples were chosen randomly from oak in Nowshahr forest region. Then, flour and ash were provided from heart wood, sap wood and bark of oak by TAPPI standards. For measured metallic ions, first the mineral compound of ash dissolved by 65% nitric acid and for it's identified by atomic adsorption method. The results showed that Fe, Zn and Cu ions in wood of oak were more than its bark and its Mn ion was lower. Then extractives were separated from wood flour by acetone and extractives residue transferred to glassy vial and was added BSTFA reactor to it. After samples prepared, its were injected by GC/MS for analyze. Identification of compounds was done by retention time of each compound, calculation of quartz index and Adams table. The result of GC-MS showed that there are 10, 42 and10 compounds in heart wood, sap wood and bark of oak, respectively. Comparison of chromatograms showed that Decan, Dodecan, Tetradecane and Bis(2-ethylhexyl)phthalate were exists as 4 common components in bark, sap wood and heart wood of oak and Silicic acid and 1,2-Benzenedicarboxylic acid were exists as 2 common components in bark and sap wood of oak. These compounds can very important in durability and consumption its.