Comparison of essential oil extracted from black pepper by using various distillation methods in laboratory scale

Abstract

Abstract Black pepper is an indispensable spice in life—pepper oil used in various fields as pharmaceutical, cosmetic, repellent. Black pepper was picked in Vietnam and its essential oil was obtained by distillation methods. This study investigated the effect of several parameters such as material/water ratio, distillation time, the weight of the sample, and extraction power on the yield and the quality of black pepper essential oil from three distillation methods. The results showed that the hydrodistillation method reached the highest yield of 2.19% at conditions of 60 minutes extraction time and material/water ratio of 1:15 g/mL compare to the steam distillation method and microwave assisted hydrodistilation method. GC-MS analysis resulted in the identification of 70 components accounting for 99% of the total amount: β-caryophyllene, 3-carene, D-limonene, and β-pinene, are among the main compounds in black pepper essential oil.