| abstract |
The present invention relates to a supercritical extraction method and to a method for producing ginger extract which has a potent anti-inflammatory effect by using the lees which remain after the extraction and to a ginger extract obtained thereby. More specifically, a method is provided for obtaining an extract with a high gingerol content while not only making it possible to either remove or complement the specific taste and smell of ginger but also affording a high extraction yield in a short time, by subjecting ginger powder to supercritical extraction at a temperature of between 35 and 55°C and a pressure of between 100 and 400 bar at a flow rate of between 1 and 3 mL/min for between 1 and 3 hours, using supercritical carbon dioxide. Also, provided is a method for obtaining a ginger extract having potent anti-inflammatory and anti-allergy activity through the use of ginger lees, by adding 60 to 90% alcohol to the lees which remain after the supercritical extraction, in an amount of between 5 and 15 times (w/v) the weight of the ginger lees, and allowing to stand for between 6 and 36 hours at room temperature. |