Study on Optimization Process of Ginger Oil by Solvent Extraction

Taking ginger as material,based on the screen of petroleum ether(boiling range 60~90℃),cyclohexane,aether and n-pentane,the effect of factors such as ginger dry/fresh material,material particle,material-liquid ratio,extraction temperature and distillation temperature on the extraction rate of ginger oil were investigated in order to study the best process in solvent extraction of ginger oil.The results showed that,under single factor experiment,petroleum ether was the optical extraction agent,dry ginger powder that through 60meshes was suitable for ginger oil extraction,and the appropriate material/liquid ratio,extraction temperature,and distillation temperature under 0.7kPa pressure was 1∶3g/mL,extraction 45℃ and distillation 45℃,respectively.Further orthogonal experiment indicated that the optimal material/liquid ratio,extractation temperature,and extraction time was 1∶3.5g/mL,extraction temperature 40℃,and extraction time 30min,respectively.This process could improve the extraction rate to 4.3%,and the ginger oil extracted had pure ginger flavor.