Abstract: The volatile components from Pterocarpus indicus leaves were extracted by simultaneous distillation extraction (SDE),solid phase micro-extraction (SPME) and dynamic headspace adsorption (DHA) and analyzed using gas chromatography-mass spectrometry (GC-MS).The results indicated that the volatile oil compounds extracted out using the three methods were different.Twenty-five chemical components were identified from the SDE extract,the main component was 2-nitroethanol, accounting for 35.29% of the total identified components;Twenty-seven chemical components were identified from the SPME extract,the main component was cis-3-hexenyl-1-acetate,accounting for 33.62% of the total identified components;Twenty-seven chemical components were identified from the DHA extract,the main component was 2-nitroethanol,accounting for 30.42% of the total identified components.Two compounds were detected in all the three extracts.In addition, alcohols,esters and acetals were the major components detected in all the three extracts.

Key words: Pterocarpus Indicus, simultaneous distillation extraction, solid phase micro-extraction, dynamic headspace adsorption, gas chromatography-mass spectrometry