Kinetics of Oil Extraction From Lemongrass (Cymbopogon winterianus Jowitt) using Hydrodistillation Method

Volatile oil, or commonly known as essential oil, is a concentrated liquid that is insoluble in water and contains aromatic compounds. One source of essential oils is citronella. The extraction of lemongrass oil is carried out using the hydrodistillation method, with consideration of the solvent used in the form of aquadest so that it is easier to obtain and the time required for extraction is relatively faster. To increase the efficiency of the extraction process, kinetic modeling was carried out. This aims to predict the results before the extraction process is carried out, and considering that there are still few studies that discuss the kinetic model. So in this study, we modeled the process of extracting essential oils from lemongrass (Cymbopogon winterianus Jowitt) in 7 different kinetic models including pseudo-first-order and pseudo-second-order kinetics models in linear and nonlinear forms. By considering the value of the coefficient determination, from the 7 kinetic models, a non-linear form of pseudo-first-order (Non PFO-1) was chosen because it has a high R-2 value, the smallest percentage of q value and also small SSE, RMSE and MSE values.