Preparation method of eugeniin
A clove, extraction technology, applied in the preparation field of extracting syringin from plants, can solve the problems such as no application of high-purity syringin preparation process report, and achieve the effects of large-scale production operation, less pollution, and less energy consumption
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Embodiment 1
[0024] Take 10Kg of clove leaves, add 80Kg of water, put it into a microwave extraction device for microwave extraction, extraction power 400W, extract once, 3 minutes, collect the extract, filter, filter the filtrate through an activated carbon column to absorb impurities, and collect the next column liquid , adsorbed by D102 macroporous adsorption resin column, eluted with 10% ethanol, collected 3 times the column volume eluate, concentrated, added ethanol to make the alcohol content reach 65%, refrigerated for 24 hours, filtered, collected filter residue, and dried , Pulverize to obtain 59.5g of syringin, detected by HPLC, the purity is 94.2%, UV, IR, MS, 2 HNMR, 13 The data characterizing its physical properties such as CNMR are consistent with the prior art.
Embodiment 2
[0026] Take 10Kg of clove leaves, add 120Kg of water, put it into a microwave extraction device for microwave extraction, extraction power 600W, extract 3 times, 8 minutes each time, collect the extract, filter, and the filtrate is adsorbed by an activated carbon column to remove impurities and collected. The column liquid is adsorbed by the AB-8 macroporous adsorption resin column, eluted with 30% ethanol, collected 8 times the column volume eluate, concentrated, added ethanol to make the alcohol content reach 65%, refrigerated for 24 hours, filtered, The filter residue was collected, dried and pulverized to obtain 68.3 g of syringin, which was detected by HPLC with a purity of 92.9%, UV, IR, MS, 2 HNMR, 13 The data characterizing its physical properties such as CNMR are consistent with the prior art.
Embodiment 3
[0028] Take 10Kg of clove leaves, add 100Kg of water, put it into a microwave extraction device for microwave extraction, extraction power 500W, extraction 2 times, 6 minutes each time, collect the extract, filter, and the filtrate is adsorbed by activated carbon column to remove impurities. Collect the lower column liquid, absorb it through a D101 macroporous adsorption resin column, elute with 20% ethanol, collect 5 times the column volume eluate, concentrate, add ethanol to make the alcohol content reach 65%, refrigerate for 24 hours, filter, The filter residue was collected, dried and pulverized to obtain 63.5 g of syringin, which was detected by HPLC with a purity of 96.3%, UV, IR, MS, 2 HNMR, 13 The data characterizing its physical properties such as CNMR are consistent with the prior art.
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