Oil extraction optimization from Xanthoceras sorbifolia with response surface methodology

This paper has discussed the ultrasonic oil extraction from Xanthoceras sorbifolia (Yellowhorn) seeds. The oil yield ratio and its range have been claimed by single-factor test. Taking the ultrasonic power, ultrasonic time and solid-liquid ratio as the independent variables and oil yield as the response value, the research was carried out to study the interaction among the independent variables and the affect to oil yield by Box-Behnken methodology. The stimulated predicted model of regression equation was conducted by Design Expert software. The study revealed that, when choosing petroleum ether as the solvent, the extraction temperature and time are 60°C and 3 hours. The optimum condition for extracting yellowhorn oil was using ultrasonication power: 300 W, ultrasonic time: 16 minutes and solid-liquid ratio: 1:8 (g: ml). The oil yield ratio was 60.95% whose relative deviation was 0.58% compared with the predicted value, which was 61.53%. This demonstrated that this model reasonably applies to the oil extraction ratio of yellowhorn.