Chrysanthemum absolute oil extracted by using subcritical fluid low-temperature process
A subcritical fluid, low temperature process technology, applied in the direction of essential oils/spices, fat production, etc., can solve the problems of high extraction temperature, loss of aroma components, affecting product quality, etc., and achieve the effect of high strength and realistic aroma
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Embodiment 1
[0009] The present invention utilizes subcritical fluid to extract the process of chrysanthemum absolute oil at low temperature as follows: use chrysanthemum as raw material, put it in the extraction tank, seal the extraction cover, open the vacuum pump and start the solenoid valve, and turn off the vacuum pump when the reading of the vacuum gauge is greater than 0.07MPa and solenoid valve start button. Open the injection valve to add solvent, subcritical dimethyl ether fluid is used as the main solvent, and there may be an appropriate amount of entrainer. The entrainer that can be used is one or more mixtures of propylene glycol, glycerin, and sorbitol. When the amount of solvent added reaches 2 to 10 times the weight of the chrysanthemum raw material, close the injection valve and start the reflux extraction timing. The extraction conditions are: temperature -10°C-30°C, pressure 0.1-0.9MPa, time 1-5 hours. After the extraction is finished, the extract is put into a separati...
Embodiment 2
[0011] Use 5000g tribute chrysanthemum as raw material, put it in the extraction tank, seal the extraction cover, open the vacuum pump and start the solenoid valve, and turn off the start button of the vacuum pump and solenoid valve when the reading of the vacuum gauge is greater than 0.07MPa. Open the injection valve to add solvent, using subcritical dimethyl ether fluid as solvent. When the amount of solvent added reaches 10 times the weight of the chrysanthemum raw material, close the injection valve and start the reflux extraction timing. The extraction conditions are: temperature 5°C-25°C, pressure 0.3-0.6MPa, time 4 hours. After the extraction is finished, the extract is put into a separation tank, the dimethyl ether solvent is decompressed and vaporized, and separated from the crude extract of chrysanthemum. Then turn on the compression motor, and the solvent enters the storage tank after being compressed and cooled. When the pressure of both the extraction tank and t...
Embodiment 3
[0013] Use 5000g Hangbai chrysanthemum as raw material, put it in the extraction tank, seal the extraction cover, open the vacuum pump and solenoid valve to start, when the vacuum gauge reading is greater than 0.07MPa, turn off the vacuum pump and solenoid valve start button. Open the injection valve to add solvent, using subcritical dimethyl ether fluid as solvent. When the amount of solvent added reaches 6 times the weight of the chrysanthemum raw material, close the injection valve and start the reflux extraction timing. The extraction conditions are: temperature -10°C ~ 10°C, pressure 0.5MPa, time 3 hours. After the extraction is finished, the extract is put into a separation tank, the dimethyl ether solvent is decompressed and vaporized, and separated from the crude extract of chrysanthemum. Then turn on the compression motor, and the solvent enters the storage tank after being compressed and cooled. When the pressure of both the extraction tank and the separation tank ...
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