Identification of Chemical ComponentsWithin Ethanolic Extract of Black Locust Heartwood by GC/MS Method

Black locust wood species is considered to be very durable, which is cultivated asa random tree figure and, as a plantation species in the most of country regions, especially in the semiarid and arid areas (Karaj) in order to create green place and soil nitrogen fixing. Extractives was done using ethanol solvent for 15 days. The percentage average of black locust heartwood extractives was determined 16.6. Identification of chemical components in the extractives samples were done by using GC/MS technique. Generally, fifteen compounds were identified with different percentage in heartwood. The most abundant compounds identified in the heartwood of black locust species was (23S)-ethylcholest-5-en-3.beta.-ol which were observed at about 18.33%. The most important identified saturated and unsaturated fatty acids in the heartwood of this species were Hexadecanoic acid (0.31%) and 9,12-octadecadienoic acid (Z,Z)- (0.47%), respectively. The other main identified sterols in the heartwood of this species, uhich is present in the most plant species, was stigmasterol (13.75%) and campesterol (3.53%).