Method of extracting tea polyphenol from black tea leaves through adsorption
A technology of tea polyphenols and black tea leaves, which is applied in the direction of medical preparations containing active ingredients, plant raw materials, plant/algae/fungus/moss components, etc., and can solve the problems of low extraction rate and purity of tea polyphenols
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Embodiment 1
[0034] A process for extracting and adsorbing tea polyphenols from black tea leaves, comprising the following steps:
[0035] S1: Dry and crush the black tea leaves into 70 meshes, then add distilled water, the ratio of the amount of black tea leaves to distilled water is 1:13, place it in a vacuum high-shear homogenizer to fully homogenize, and obtain a water paste slurry material, and then heated in a water bath to control the temperature of the water paste slurry at 65°C, and add 1-allyl-3-methyl imidazole bromide to the water paste slurry, the black tea leaves and 1-ene The dosage ratio of propyl-3-methylimidazole bromide is 1:0.3, stirred at a speed of 300r / min for 22min, left to cool for 1h to obtain a slurry;
[0036] S2: Ultrasonic treatment is performed on the slurry, the frequency of the ultrasonic wave is 30KHz, and the treatment time is 5min, to obtain the treated slurry;
[0037] S3: Using supercritical CO to the slurry treated in step S2 2 Extraction, in CO 2 ...
Embodiment 2
[0040] A process for extracting and adsorbing tea polyphenols from black tea leaves, comprising the following steps:
[0041] S1: Dry and crush the black tea leaves into 60 meshes, then add distilled water, the ratio of the amount of black tea leaves to distilled water is 1:10, place in a vacuum high-shear homogenizer to fully homogenize, and obtain a water paste slurry material, and then heated in a water bath to control the temperature of the water paste slurry at 60°C, and add 1-allyl-3-methyl imidazole bromide to the water paste slurry, the black tea leaves and 1-ene The dosage ratio of propyl-3-methylimidazole bromide is 1:0.2, stirred at a speed of 200r / min for 30min, left to cool for 0.7h to obtain a slurry;
[0042] S2: Ultrasonic treatment is performed on the slurry, the frequency of the ultrasonic wave is 25KHz, and the treatment time is 8min, to obtain the treated slurry;
[0043] S3: Using supercritical CO to the slurry treated in step S2 2 Extraction, in CO 2 A...
Embodiment 3
[0046] A process for extracting and adsorbing tea polyphenols from black tea leaves, comprising the following steps:
[0047] S1: Dry and crush the black tea leaves into 80 meshes, then add distilled water, the ratio of the amount of black tea leaves to distilled water is 1:13, put them in a vacuum high-shear homogenizer to fully homogenize, and obtain a water paste slurry and then heated in a water bath to control the temperature of the water paste slurry at 62°C, and add 1-allyl-3-methyl imidazole bromide to the water paste slurry, the black tea leaves and 1- The dosage ratio of allyl-3-methylimidazole bromide is 1:0.2, stirred at a speed of 300r / min for 22min, left to cool for 1.2h to obtain a slurry;
[0048] S2: Ultrasonic treatment is performed on the slurry, the frequency of the ultrasonic wave is 30KHz, and the treatment time is 5min, to obtain the treated slurry;
[0049] S3: Using supercritical CO to the slurry treated in step S2 2 Extraction, in CO 2 Add sodium l...
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