2018 : Solvent-free microwave extraction of essential oil from dried patchouli (Pogostemon cablin Benth) leaves

Prof.Ir. Ali Altway M.Sc
Prof.Dr. Ir Mahfud DEA


Abstract

Solvent-free microwave extraction method was first employed to extract essential oil from dried patchouli (Pogostemon cablin Benth) leaves. The effects of solvent-free microwave extraction variables including microwave power, ratio between mass of raw material with volume of distiller (F/D), raw material size and extraction time on the yield of essential oil were investigated. Meanwhile, the effects of solvent-free microwave extraction method in the chemical components of essential oil were also evaluated. The optimized conditions was as follows: microwave power of 450 W, ratio between mass of raw material with volume of distiller (F/D) of 0.06 g/mL, raw material size of intact (4.66 ± 1.41 cm) and extraction time of 90 min. Moreover, the extraction time was sufficient for solvent-free microwave extraction method to obtain higher yield than that using microwave hydrodistillation method for 3 h, indicating a significant …