Method for extracting cannabidiol and cannabidiol product thereof
A cannabidiol extraction technology, applied in chemical instruments and methods, bulk chemical production, preparation of organic compounds, etc., can solve problems affecting the purity and quality of cannabidiol
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Embodiment 1
[0034] A method for extracting cannabidiol, comprising:
[0035] Pretreatment: drying the flowers and leaves of cannabis at 105 degrees Celsius for 0.5 hours to obtain raw material A with a moisture content of 7%;
[0036] Pulverization: Pulverize raw material A to 50 mesh to obtain powder B;
[0037] Drying: Dry powder B at 105 degrees Celsius for 1 hour to obtain powder C with a moisture content of less than 5%;
[0038] Extraction: Carry out supercritical carbon dioxide extraction to powder C, the extraction temperature is 20 degrees Celsius, the pressure is 5MPa, the extraction time is 1 hour, the flow rate of carbon dioxide is 500 kg / hour, also added entrainer ethyl acetate during extraction, entrainer The weight ratio to powder C is 0.3:100; after extraction, liquid D and residue E are obtained, and residue E is subjected to secondary extraction at a temperature of 20 degrees Celsius and a pressure of 5 MPa. The extraction time is 1 hour and the flow rate of carbon diox...
Embodiment 2
[0044] A method for extracting cannabidiol, comprising:
[0045] Pretreatment: drying the flowers and leaves of cannabis at 120 degrees Celsius for 4 hours to obtain raw material A with a moisture content of less than 7%;
[0046] Pulverization: Pulverize raw material A to 100 mesh to obtain powder B;
[0047] Drying: Dry powder B at 120 degrees Celsius for 0.5 hours to obtain powder C with a moisture content of less than 5%;
[0048] Extraction: Carry out supercritical carbon dioxide extraction to powder C, the temperature of extraction is 50 degrees centigrade, the pressure is 30MPa, the extraction time is 5 hours, the flow rate of carbon dioxide is 850 kg / hour, also added entrainer solvent gasoline during extraction, entrainer and The weight ratio of powder C is 1.0:100; after extraction, liquid D and residue E are obtained. The residue E is subjected to secondary extraction at a temperature of 50 degrees Celsius and a pressure of 30 MPa. The extraction time is 5.5 hours a...
Embodiment 3
[0054] A method for extracting cannabidiol, comprising:
[0055] Pretreatment: drying the flowers and leaves of cannabis at 112 degrees Celsius for 2 hours to obtain raw material A with a moisture content of 6%;
[0056] Pulverization: Pulverize raw material A to 75 mesh to obtain powder B;
[0057] Drying: Dry powder B at 109 degrees Celsius for 42 minutes to obtain powder C with a moisture content of less than 5%;
[0058] Extraction: Carry out supercritical carbon dioxide extraction to powder C, the temperature of extraction is 35 degrees Celsius, the pressure is 20MPa, the extraction time is 3 hours, the flow rate of carbon dioxide is 600 kg / hour, also added entrainer sherwood oil during extraction, entrainer and The weight ratio of powder C is 0.7:100; after extraction, liquid D and residue E are obtained. The residue E is subjected to secondary extraction at a temperature of 35 degrees Celsius and a pressure of 20 MPa. The extraction time is 3 hours and the flow rate of...
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