| Summary: | Agarwood or its specific named, Aquilaria spp. is a precious tree in the world. It has been used widely in pharmaceutical industry, production of perfumes and incense raw material. In this study, the agarwood essential oil, species of Aquilaria maleccensis is being extracted by using hydrodistillation method. This study aims to analyse the present of chemical compound named sesquiterpenes in the agarwood essential oil. The effect of pre-treatment using soaking process on the agarwood within 7 days, 14 days and 21 days before proceed for hydrodistillation process had been done. The hydrodistillation process took 3 days before the sample of essential oil is collected. The sample is being analysed by using gas chromatography mass spectrometry (GC-MS). The result showed the existence of sesquiterpenes had been identified from all sample of three batches. However, different types of sesquiterpenes were identified for different batch. The highest sesquiterpenes content for 1st batch is α-gurjunene with 2.95%, the 2nd batch is ç-Himachalene with 0.292% and the 3rd batch is same with the 1st batch which is α-gurjunene with 0.356%. © 2018, Malaysian Society of Analytical Sciences. All rights reserved.
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