A METHOD OF PREPARING BRASSICA RAPA EXTRACT

摘要

The present invention, compared to the conventional extraction method, a method for preparing a red cabbage extract having an increased content of polyphenols and flavonoids, specifically, a red cabbage dried product to prepare a red cabbage dried by slicing and drying the red cabbage; After placing the red cabbage dried in a supercritical extraction container, carbon dioxide (CO ₂ ) as a supercritical fluid, and after performing supercritical extraction for 150 minutes under a pressure condition of 400 bar and a temperature of 50° C., the supercritical cabbage dried product Red cabbage supercritical extraction foil production step to obtain the supercritical extraction foil which is the residue of the; And polyphenol containing 50% (v / v) ethanol aqueous solution to the supercritical extraction foil, and after extracting for 24 hours at the condition of 20 ℃, to obtain an extract to produce an extract of ethanol aqueous solution polyphenols and It relates to a method for producing red cabbage extract containing flavonoids. The red cabbage extract prepared by the production method of the present invention not only has a high content of polyphenols, which has been evaluated as having excellent antioxidant activity, but also has a high content of flavonoids, which maximizes the functional components of red cabbage with various functions. Since the extract can be manufactured and the extraction yield is excellent, the economic effect of the extraction method is also improved, so it can contribute to expanding the utilization of red cabbage to the food industry, etc., thus contributing to the increase of farmers' income and regional economic activity. It will be very effective.