64 results about "Xanthohumol" patented technology

The invention provides a method for extracting xanthohumol from hop and an obtained product thereof. The method mainly comprises the following steps: pulverized hop is extracted through supercritical carbon dioxide; a hop raffinate is collected and is subjected to ultrasonic extraction through methanol (ethanol) as an extractant; an extraction solution is condensed, is evenly mixed with diatomite and is successively eluted by two kinds of eluants; and the collected eluant is subjected to filtering and low-temperature condensation treatment to obtain the pure xanthohumol product. The purity of the obtained xanthohumol is 86.2 percent. The purified xanthohumol is a yellow powdery solid; and after the purified xanthohumol is recrystallized, the purity can reach over 97.8 percent. The method can achieve the functions of simplifying the xanthohumol extraction process and reducing the cost for purifying the xanthohumol. The obtained xanthohumol can be widely used in medicine, chemical engineering, food and other fields.

The invention relates to a method for extracting and separating xanthohumol and flavone compounds. The method comprises the following steps of: leaching hops and a supercritical CO2 extraction residue thereof with an alcohol solution to ensure that flavone compounds, particularly xanthohumol, are sufficiently dissolved out; filtering to obtain a filter liquor after leaching, and decompressing anddistilling the filter liquor to obtain a concentrated liquor; centrifuging the concentrated liquor, taking an obtained supernate, and filtering by using a 0.45muL of organic film; removing partial impurities, and eluting with an eluant to elute the flavone compounds from macroporous adsorption resin; collecting effluent liquid and concentrating; and freezing and drying to obtain yellow powder. In the invention, the hops, the supercritical CO2 extraction residue, and the like are used as raw materials, particularly, a waste material which is the supercritical CO2 hop extract extraction residuein a hop product processing process is used as the raw material, thus the xanthohumol which has the main efficacy and is difficult to separate is independently extracted, and other flavone compounds rich in the hop waste material are also extracted; and the invention also provides a development approach for hops which cannot be used for beer brewing, thereby improving the resource utilization ratio and the added value of the hops and having important significance to prolonging the hop industrial chain.