This paper deals with the study on the essential oil of zingiber corallium hance obtained by supercritical CO2 extraction and steam distillation.The comparison of technological process characteristics and chemical composition of these essential oils obtained by supercritical CO2 extraction and steam distillation has been done.Also we have done some experiments on antifungus and antibacterium activities of these oils.For the extraction process of the essential oil of zingiber corallium hance,supercritical CO2 extraction is better than that by steam distillation.The inhibitory activities of the essential oil extracted by both methods are the same.It shows that supercritical CO2 extraction can be as a new technological process used in the extraction for exxential oil of herb.
