Abstract:
The present invention relates to an extract of a processed herbal medicinal plant and a composition for skin external application which contains the extract. More specifically, the composition for skin external application contains an extract of processed herbal medicinal plant, prepared through a method comprising the steps of: (a) processing an herbal medicinal plant by a process of boiling, steaming, roasting, baking or heating the medicinal plant or a combination of two or more of these processes; (b) obtaining an extract of the processed medicinal plant. The composition shows an improved antioxidant effect.
Abstract:
Provided is a pressure-cycling type of extraction device comprising: an extraction unit for accommodating and extracting an extraction target substance; a compression unit for increasing the pressure inside the extraction unit; and a decompression unit for decreasing the pressure inside the extraction unit; wherein the pressure inside the extraction unit is increased and decreased by alternately operating the compression unit and the decompression unit, and the extraction unit comprises a bubbling nozzle for supplying bubbles into the extraction target substance. Further provided is a pressure-cycling type of extraction method in which a compression process and a decompression process are carried out alternately, and compositions produced by the method. The extraction device and method allow low temperature extraction, permit outstanding extraction efficiency and can prevent colour changes, olfactory changes and thermal denaturation of the extraction target substance.