A method for extracting tea polyphenols used in cosmetics
An extraction method and tea polyphenol technology, which are applied in the field of Chinese herbal medicine component extraction
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Embodiment 1
[0032] A method for extracting tea polyphenols used in cosmetics, comprising the following steps:
[0033] S1: Raw material processing: Dry and crush the tea leaves into 80 meshes, add distilled water as solvent, place in a vacuum high-shear homogenizer to fully homogenize to obtain a water paste slurry, and then heat it in a water bath to make the water paste The temperature of the slurry is controlled at 70°C, and ethanol with a concentration of 10% is added to the water paste slurry, stirred at a speed of 260r / min for 30min, left to cool for 1h to obtain a slurry a, and then the obtained slurry a is extracted with a tetrahydrofuran solvent , to obtain slurry b; the consumption ratio of the tea leaves and distilled water is 1:13; the consumption ratio of the tea leaves and ethanol is 1:0.5;
[0034] S2: ultrasonic treatment: perform ultrasonic treatment on the slurry b, the frequency of the ultrasonic wave is 15-18KHz, and the treatment time is 15min, to obtain the slurry c;...
Embodiment 2
[0038] A method for extracting tea polyphenols used in cosmetics, comprising the following steps:
[0039] S1: Raw material treatment: dry and crush the tea leaves into 60 meshes, add distilled water as a solvent, place in a vacuum high-shear homogenizer to fully homogenize to obtain a water paste slurry, and then heat it in a water bath to make the water paste The temperature of the slurry is controlled at 80°C, and ethanol with a concentration of 15% is added to the water paste slurry, stirred at a speed of 300r / min for 20min, left to cool for 0.5h to obtain a slurry a, and then the obtained slurry a is used as a tetrahydrofuran solvent Extract to obtain slurry b; the dosage ratio of the tea leaves and distilled water is 1:15; the dosage ratio of the tea leaves and ethanol is 1:0.7;
[0040] S2: Ultrasonic treatment: Ultrasonic treatment is performed on the slurry b, the frequency of the ultrasonic wave is 18KHz, and the treatment time is 10min, to obtain the slurry c;
[0...
Embodiment 3
[0044] A method for extracting tea polyphenols used in cosmetics, comprising the following steps:
[0045] S1: Raw material processing: dry and crush the tea leaves into 70 meshes, add distilled water as a solvent, place in a vacuum high-shear homogenizer to fully homogenize to obtain a water paste slurry, and then heat it in a water bath to make the water paste The temperature of the slurry is controlled at 60°C, and ethanol with a concentration of 20% is added to the water paste slurry, stirred at a speed of 200r / min for 25min, left to cool for 0.8h to obtain a slurry a, and then the obtained slurry a is used as a tetrahydrofuran solvent Extract to obtain slurry b; the dosage ratio of the tea leaves and distilled water is 1:10; the dosage ratio of the tea leaves and ethanol is 1:0.8;
[0046] S2: ultrasonic treatment: perform ultrasonic treatment on the slurry b, the frequency of the ultrasonic wave is 15KHz, and the treatment time is 12min, to obtain the slurry c;
[0047]...
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