Pu'er-tea-fragrance-type tobacco essence and preparing method thereof
A technology for tobacco essence and Pu-erh aroma, which is applied in the preparation of tobacco, essential oil/spice, tobacco, etc., can solve the problem of single variety, achieve soft and delicate taste, simple preparation method, and stable product quality
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Embodiment 1
[0023] (1) Pretreatment of macroporous resin column: Soak D101 macroporous adsorption resin in 95% ethanol overnight, rinse with distilled water until there is no ethanol smell, then soak in 4% NaOH solution for 4 hours, and rinse with distilled water until neutral; Finally, soak in 4% HCl solution for 4 hours, rinse with distilled water until neutral, and pack into a column (5cm×70cm) for later use;
[0024] (2) Add Pu'er tea leaves to the ultrasonic extraction tank, add a mixed solvent with a weight ratio of ethanol, propylene glycol and water = 40:15:50, and the weight ratio of solid to liquid is 1:5, turn on the equipment, set the ultrasonic frequency to 20kHz, and keep the temperature At 50°C, the extraction time is 20 minutes, stop the operation, pour out the extract after a little cooling, filter with a filter, and collect the extract; the remaining residue is extracted for the second time by the above method, and the second extract is collected by filtration;
[0025] ...
Embodiment 2
[0031] (1) The pretreatment of the macroporous resin column is the same as in Example 1;
[0032] (2) Add Pu'er tea leaves into the ultrasonic extraction tank, add a mixed solvent with a weight ratio of ethanol, propylene glycol and water = 50:20:30, and the weight ratio of solid to liquid is 1:10, turn on the equipment, the ultrasonic frequency is 80kHz, and the temperature is kept At 70°C, the extraction time is 40 minutes, stop the operation, pour out the extract after cooling slightly, filter with a filter, and collect the extract; the remaining residue is extracted for the second time by the above method, and the second extract is collected by filtration;
[0033] (3) Combine the two extracts and concentrate on a rotary evaporator with a concentration temperature of 60°C and a vacuum of 0.005Mpa;
[0034] (4) Dilute the obtained concentrate with 15 times by weight of distilled water;
[0035] (5) Pass the diluent treated in step (4) through the D101 macroporous adsorptio...
Embodiment 3
[0039] (1) The pretreatment of the macroporous resin column is the same as in Example 1;
[0040] (2) Add Pu'er tea leaves into the ultrasonic extraction tank, add a mixed solvent with a weight ratio of ethanol, propylene glycol and water = 60:10:20, and the weight ratio of solid to liquid is 1:15, turn on the equipment, the ultrasonic frequency is 200kHz, and the temperature is kept At 90°C, the extraction time is 90 minutes, stop the operation, pour out the extract after a little cooling, filter with a filter, and collect the extract; the remaining residue is extracted for the second time by the above method, and the second extract is collected by filtration;
[0041] (3) Combine the two extracts and concentrate on a rotary evaporator with a concentration temperature of 85°C and a vacuum of 0.01Mpa;
[0042] (4) Dilute the obtained concentrate with 20 times by weight of distilled water;
[0043] (5) Pass the diluent treated in step (4) through the D101 macroporous adsorptio...
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