Valerian extract and preparation method and use thereof
A valerian extract and extract technology, which is applied in the field of valerian extract and its preparation, can solve the problems of complex methods and large percolation liquid volume, and achieve the effects of less dosage, short heating time and less damage
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Embodiment 1
[0082] Embodiment 1: the preparation of valerian root extract
[0083]Crush 2 kg of Valeriana officinalis into coarse powder, pass through a 10-mesh sieve, place in an extraction kettle, add 2.5 kg of 95% ethanol, conduct static extraction at 30 MPa and 40°C for 2 hours; then dynamically extract for 2 hours, dissolve Supercritical CO with extracts 2 Enter in the separating tank and analyze and separate, and the ethanol in the extract is recovered under reduced pressure to obtain 140 g of the valerian root extract.
Embodiment 2
[0084] Embodiment 2: the preparation of valerian extract
[0085] Pulverize 2 kg of Valeriana officinalis into coarse powder, cross a 10-mesh sieve, place in an extraction kettle for extraction, the extraction pressure is 25Mpa, and the extraction temperature is 40°C, adding entraining agent ethanol (accounting for 10% of carbon dioxide by mass percentage) wherein %), extraction time 2h, dissolved in supercritical CO 2 Enter in the separating tank and analyze and separate, and the ethanol in the extract is recovered under reduced pressure to obtain 100 g of valerian root extract.
Embodiment 3
[0086] Embodiment 3: the preparation of valerian root extract
[0087] Crush 2 kg of Valeriana officinalis into coarse powder, pass through a 10-mesh sieve, place in an extraction kettle, add 2.5 L of ethyl acetate, conduct static extraction at 25 MPa and 40 °C for 1 hour, and then dynamically add entrainer, at this time The entrainer is ethyl acetate (accounting for 5% of carbon dioxide by mass percentage), extracted for 2h under the same extraction pressure and temperature conditions, and the supercritical CO dissolved in the extract 2 Enter in the separating kettle and analyze and separate, and the ethyl acetate in the extract is recovered under reduced pressure to obtain 120 g of valerian root extract.
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