A kind of extraction method of ginseng extract
An extraction method and ginseng extraction technology, which can be applied in the fields of drug combination, pharmaceutical formula, food science, etc., can solve the problems of rare extraction methods of whitening functional ingredients and reduction of melanin content
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Embodiment 1
[0027] Take the dried ginseng root and cut it into small pieces, add deionized water at a ratio of 1:10 to soak overnight, heat to 100°C for extraction for 2 hours, extract 3 times, combine the supernatant, concentrate to 22°C when the relative density is 1.100, After cooling, use 75% ethanol for precipitation, collect the supernatant, remove the ethanol under reduced pressure, and dry to obtain the crude ginseng extract. Put the crude extract of ginseng into a vacuum oven at 40°C for thermal conversion for 72 hours. Reconvert the thermally converted ginseng crude extract with deionized water, add pretreated D101 macroporous resin, and elute with 10% ethanol until colorless, collect the eluate, and decompress Ethanol was removed and dried to obtain ginseng extract.
Embodiment 2
[0029] Take the dried ginseng root and cut it into small pieces, add deionized water at a ratio of 1:15 to soak overnight, heat to 100°C for extraction for 1 hour, extract twice, combine the supernatant, and concentrate to 18°C when the relative density is 1.112, After cooling, use 75% ethanol for precipitation, collect the supernatant, remove the ethanol under reduced pressure, and dry to obtain the crude ginseng extract. Put the crude extract of ginseng into a vacuum oven at 50°C for thermal transformation for 48 hours. After reconverting the heat-converted ginseng crude extract, add pretreated D101 macroporous resin, elute with 40% ethanol until colorless, collect the eluate, remove ethanol under reduced pressure, and dry. Get ginseng extract.
Embodiment 3
[0031] Cut the dried fibrous roots of ginseng into small pieces, add deionized water to soak overnight at a ratio of 1:5, heat to 100°C for extraction for 3 hours, extract 3 times, combine the supernatant, and concentrate to 25°C when the relative density is 1.150, After cooling, use 75% ethanol for precipitation, collect the supernatant, remove the ethanol under reduced pressure, and dry to obtain the crude ginseng extract. Put the crude extract of ginseng into a vacuum oven at 60°C for thermal conversion for 48 hours. After reconverting the heat-converted ginseng crude extract, add pretreated AB8 macroporous resin, elute with 30% ethanol until colorless, collect the eluate, remove ethanol under reduced pressure, and dry , to obtain ginseng extract.
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