Determination of borneol and other chemical compounds of essential oil of Dryobalanops aromatica exudate from Malaysia

Abstract

Purpose: To determine borneol and other chemical compounds of essential oil derived from the exudate of Dryobalanops aromatica in Malaysia. Methods: Exudate was collected from D. aromatica and subjected to fractional distillation to obtain essential oil. Gas chromatography-mass spectrometry (GC-MS) was performed to characterize the composition of the isolated essential oil. Results: Essential oil (7.58%) was obtained with the highest yield (3.24%) in the first 2 h of fractional distillation. Thirty compounds which accounted for 97.56% of total essential oil composition were identified by GC-MS, and they include sesquiterpenes (46.87%), monoterpenes (31.05%), oxygenated monoterpenes (16.76%) and oxygenated sesquiterpenes (2.13%). Borneol (0.74%) was also detected in the essential oil. Conclusion: Borneol and other terpenoid compounds are present in the essential oil of the exudate of D. aromatica.