Document Type : Research Paper
Author
Assistant Prof., Department of Wood & Paper Science and Technology, Chalous Branch, Islamic Azad University, Chalous, 669-61367 Iran
Abstract
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.
Keywords
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