Extraction method of odorless turmeric pigment with high stability
A technology of curcumin and extraction method, which is applied in the direction of chemical instruments and methods, azo dyes, organic dyes, etc., can solve the problems of low extraction rate, poor quality, and odor of products, and achieve high color value and high yield , The effect of simple process
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[0021] (1) Drying and crushing: Wash the ginger to remove impurities such as silt, put it in an oven to control the temperature at 80 ℃, bake for 8 minutes, put the baked ginger in a grinder and crush it until the particle size is 105 mesh sieve;
[0022] (2) Alkaline water extraction: Put the crushed ginger into the aqueous solution of caustic soda, adjust the pH=8.0, and extract at 55°C for 3 hours;
[0023] (3) Ultrasonic treatment: Then place it in an ultrasonic instrument at 45°C, the ultrasonic condition is 0°C, the ultrasonic power is 100W, the ultrasonic frequency is 45KHZ, and the treatment is 30min;
[0024] (4) Filtration and adsorption: filter the extract under reduced pressure, put the filtrate on the AB-8 macroporous resin adsorption column, and adsorb at a flow rate of 20M3 / h;
[0025] (5) Membrane treatment: use AHP ultrafiltration membrane at 3kg / cm 2 , under the condition of 20 ℃, add 35ml water to the treated solution, use NTR-7250 membrane at 3kg / cm 2 , p...
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