فهرست مطالب seyed eshagh ebadi

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

This study aimed to identify and compare the chemical components of organic matter in the leaves of ‎the planted elder pine (Pinus eldarica) and sycamore (Platanus orientalis) tree using gas chromatography and mass spectrometry techniques. In this study, 20 samples from leaves of eldar pine and sycamore trees were randomly selected from ‎the planted forest area of Tehran city. To prepare a homogenous sample (leaf flour), the leaves were thoroughly mixed and then ‎the extractive was measured according to TAPPI standards. The results showed that the average of extractives in the leaves of the planted Elder pine and sycamore tree ‎were 16.2 and 14.4%, respectively. In addition, the leaf flour was extracted with acetone. ‎The remaining extractives were then added to the BSTFA reactor. Then, the samples were placed in heated Bath (70oC, 1h.), and were finally analyzed by GC/MS. The GC diagram (indicates the abundance and retention ‎time of each compound) and calculation of quartz index, and Adams table were used to identify the compounds. The result showed that there were 20 compounds in the leaves of the plane tree that n-Hexadecanoic ‎acid (24.28%), Heptadecan-8-carbonic acid(18.05%), Octadecanoic acid (14.1%), and E Vitamin (2.81%)  ‎were the most important compounds. 45 compounds were identified in the leaves of the planted elder pine tree in which 9,12,15-Octadecatrien-1-ol (11.49%), ‎‎4-Methylmannose (10.68%), Mome Inositol(9.65%), and Phytol (0.64) were the most important compounds. Additionally, 5 combinations of Decan, Dodecan, Neophytadiene, and Octadecanoic acid were common between ‎the leaves of planted elder pine and plane tree.