Chemical Components Analysis of Kencur (Kaempreria galanga L) Essential Oil Using GC-MS Method and Its Insecticide Tests on Fruit Fly (Bactrocera sp.)

Abstract

The hydrodistillation method isolated the essential oils of Kencur (Kaempreria galanga L) using the Stahl apparatus. It was distilled for ± 5-6 hours to produce as much as 0.89% (w/w) essential oil. The chemical components of Kencur essential oil were analyzed using GC-MS, consisting of 7 compounds which seven compounds could be identified, name: Limonene (2.39%), Cineol (2.22%), and terpenes (0.80%). Hexane (1.51%), Borneol (13.23%), Methyl cinnamate (1.50%), ethyl ester (78.35%) and its insecticide test from Kencur essential oil showed Bactrocera sp. mortality. The highest was 96.7% in the 3% ginger rhizome essential oil concentration