Optimization Using Solvent-Free Microwave Hydro-diffusion Gravity Extraction of Onion Oil from Allium cepa by Response Surface Methodology

Abstract

Allium cepa using solvent-free microwave extraction (SFME) was chosen as a method in the extraction process. The method is combined with microwave hydro-diffusion gravity (MHG) technique. In this paper, onion oil was extracted from Allium cepa using solvent-free microwave and hydro-diffusion gravity extraction which is as an alternative technique to produce onion oil and it has several advantages in terms of product quality and quantity. Furthermore, response surface methodology (RSM) was designed to evaluate the single factor and interaction effects of mass of raw material (g), microwave power (W) and extraction time (min) for optimization from experimental data. The highest yield was obtained from this research at 100 g, 450 W and 15 min is 2.5875%. Response surface methodology gave the optimum condition at 99.738 g, 465.067 W, and 17.817 min is 2.677%. The error rates between the experimental and predicted model which are less than 5% indicate that values obtained in optimal conditions correspond to theoretical values and it can be used as a reference for optimizing.

Efek Parameter Pada Minyak Atsiri Nilam Jawa (Pogostemon heyneanus) Menggunakan Metode Distilasi Air dan Kombinasi Distilasi Air-Uap

“…Proses perajangan ini bertujuan agar kelenjar minyak pada bahan dapat terbuka sebanyak mungkin. Ukuran ketebalan bahan di tempat terjadinya difusi akan berkurang sehingga laju penguapan minyak atsiri pada proses distilasi menjadi cukup cepat [8].…”

Response Surface Methodology-Based Parameter Optimization of Candlenut Seeds Extraction (Aleurites moluccana Willd)

“…Additionally, the combination of gravity force and microwave-assisted extraction can increase the yield of candlenut oil extraction as aromatic oil. The Microwave Hydro diffusion and Gravity (MHG) method is a novel extraction method without distillation and evaporation processes, resulting in lower energy consumption [12]- [15]. Furthermore, the extraction method of MHG demonstrated exceptional outcomes across diverse applications that primarily involve extracting active compounds, including antioxidant molecules, essential oils, colorants, pectin, and polyphenols from medicinal and aromatic plants [16]- [18].…”