Study on Optimization Extraction of Garlic Oil

[Objective] The optimum process of garlic oil extraction by supercritical CO2 was studied.[Method] First,the single factor experiments were carried out to optimize the process of the extraction of garlic oil by supercritical CO2,on that basis,the best process conditions were obtained by the orthogonal experiments.[Result] The primary and secondary factors which affect the extraction rate were showed as following:extraction pressure extraction time extraction temperature.The optimum process conditions of garlic oil extraction by supercritical CO2 from the garlic were showed as following:taking 15% ethanol as entertainer,extraction temperature 40 ℃,extraction pressure 25 MPa,extraction time 2.5 h and the flow of carbon dioxide was 80 L/h.Under these conditions,the extraction yield was 0.461%.[Conclusion] These primary results improved the process of garlic oil extraction,and provided the theoretic basis for the industrial extraction of garlic oil.