Process method for extracting general flavone of golden camellia leaves by CO2 supercritical method
The technology of a golden flower tea and a process method is applied in the directions of pharmaceutical formulations, medical preparations containing active ingredients, food science, etc., to achieve the effects of good safety, improved economic and social benefits, and high yields
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Embodiment 1
[0019] Take fresh Jinhua tea leaves, dry them in the shade, crush them, and sieve them. Take 150 g of the powder and add it to the extraction tank of a supercritical extractor with 75% ethanol as the carrier agent, the extraction temperature is 45 °C, the pressure of the extraction tank is 35 MPa, CO 2 The flow rate is 15 L / h; the temperature of the primary separation tank is 25 ℃ and the pressure is 8 MPa; the temperature of the secondary separation tank is 25 ℃ and the pressure is 6 MPa; the extraction time is 3 h, and the dark brown total flavonoids of golden camellia tea are obtained ethanol solution. Ethanol was recovered by distillation under reduced pressure and freeze-dried to obtain a dark brown total flavonoid extract of Camellia japonica. The yield of flavonoids was 3.81%.
[0020] The analysis and detection method of total flavonoids in Camellia japonica is as follows: Accurately weigh 25.4 mg of rutin reference substance, put it in a 100 mL measuring bottle, add...
Embodiment 2
[0024] Take fresh Jinhua tea leaves, dry them in the shade, crush them, and sieve them. Take 150 g of the powder and put it into the extraction tank of a supercritical extractor, using 65% ethanol as the carrier agent, the extraction temperature is 35 °C, the pressure of the extraction tank is 25 MPa, CO 2 The flow rate is 15 L / h; the temperature of the primary separation tank is 25 ℃ and the pressure is 8 MPa; the temperature of the secondary separation tank is 25 ℃ and the pressure is 6 MPa; the extraction time is 2 h, and the total flavonoids of dark brown golden camellia tea are obtained ethanol solution. Ethanol was recovered by distillation under reduced pressure and freeze-dried to obtain a dark brown extract of total flavonoids from Camellia japonica. The yield of total flavonoids was 0.781%.
Embodiment 3
[0026] Take fresh Jinhua tea leaves, dry them in the shade, crush them, and sieve them. Take 150 g of the powder and add it to the extraction tank of a supercritical extractor, use 65% ethanol as the carrier agent, the extraction temperature is 45 °C, the pressure of the extraction tank is 35 MPa, CO 2 The flow rate is 15 L / h; the temperature of the primary separation tank is 25 ℃ and the pressure is 8 MPa; the temperature of the secondary separation tank is 25 ℃ and the pressure is 6 MPa; the extraction time is 3 h, and the total flavonoids of dark brown golden camellia tea are obtained ethanol solution. Ethanol was recovered by distillation under reduced pressure and freeze-dried to obtain a dark brown total flavonoid extract from Camellia japonica. The yield of total flavonoids was 3.694% after detection.
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