A kind of preparation method and application of quercetin-3-gentiobioside
A technology of gentiobioside and quercetin, which is applied in the preparation of sugar derivatives, preparations for skin care, chemical instruments and methods, etc., can solve problems such as undiscovered, and achieve the effect of strong antioxidant activity
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Embodiment 1
[0050] A preparation method of quercetin-3-gentiobioside, comprising the following steps:
[0051] S1, crushing step: crushing 200g of dried fruit shell of Chonglou to obtain 80-mesh fine powder of Chonglou fruit;
[0052] S2, the step of reflux extraction: put the fine powder of Papaya chinensis into the extraction tank, and use 70% ethanol / water mixed solution to carry out reflux extraction for 3 times to obtain the extract, the amount of ethanol / water mixed solution is 1Kg, The temperature is 75-90°C, the time for each reflux extraction is 2 hours, and the extracts obtained by 3 reflux extractions are combined;
[0053] S3, step of concentrating under reduced pressure: concentrating the extract under reduced pressure at a temperature of 60° C., removing the alcohol in the extract to obtain 100 g of the concentrate;
[0054] S4, centrifugation step: centrifuge the concentrated solution at a speed of 3000 rpm, take out the supernatant, and redissolve the centrifuged precipit...
Embodiment 2
[0066] A preparation method of quercetin-3-gentiobioside, comprising the following steps:
[0067] S1, crushing step: crushing 205g of dried fruit shell of Chonglou to obtain 80-mesh fine powder of double fruit shell;
[0068] S2, the step of reflux extraction: put the fine powder of Pachyphylla chinensis into the extraction tank, use 1.6Kg 80% ethanol / water mixture to carry out 3 times of reflux extraction to obtain the extract, the temperature of the reflux extraction is 75-90°C, every The time of the secondary reflux extraction is 2 hours, and the extracts obtained by the 3 reflux extractions are combined;
[0069] S3, step of concentrating under reduced pressure: concentrating the extract under reduced pressure at a temperature of 60° C., removing the alcohol in the extract to obtain 120 g of the concentrate;
[0070] S4, centrifugation step: centrifuge the concentrated solution at a speed of 3000 rpm, take out the supernatant, and redissolve the centrifuged precipitate a...
Embodiment 3
[0081] A preparation method of quercetin-3-gentiobioside, comprising the following steps:
[0082] S1, pulverizing step: crushing 197g of dried fruit husk of Chonglou to obtain 80-mesh fine powder of Chonglou husk;
[0083] S2, the step of reflux extraction: put the fine powder of Papaya chinensis into the extraction tank, use 80% ethanol / water mixture to carry out 3 times of reflux extraction to obtain the extract, the amount of ethanol / water mixture is 1.6Kg, and reflux extraction The temperature is 75 ~ 90 ℃, the time of each reflux extraction is 2 hours, and the extracts obtained by 3 reflux extractions are combined;
[0084] S3, step of concentrating under reduced pressure: concentrating the extract under reduced pressure at a temperature of 60° C., removing the alcohol in the extract to obtain 101 g of the concentrate;
[0085] S4, centrifugation step: centrifuge the concentrated solution at a speed of 3000 rpm, take out the supernatant, and redissolve the centrifuged p...
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