Green tea concentration method
A technology of green tea and tea dregs, which is applied in the direction of tea, tea extraction, tea treatment before extraction, etc. It can solve the problems of low extraction amount of tea polyphenols, insufficient antioxidant activity of green tea concentrate, and low product quality, and achieve high anti-aging Oxidation activity, good capture of effective substances, and effect of enhancing antioxidant activity
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Embodiment 1
[0035] Embodiment 1: a kind of green tea concentrated method comprises the following steps:
[0036] S1: Pulverization, primary extraction: put green tea into tea grinder, pass through 10 mesh sieve, take out and sieve for primary extraction; primary extraction: put sieved tea powder into agitator, pour temperature at 85°C , with water 20 times the quality of the tea powder, leaching for 50 minutes at a stirring speed of 30 r / min;
[0037] S2: Removing dregs: passing the mixed solution after the first extraction through a 100-mesh sieve to obtain the first extraction solution and tea dregs;
[0038] S3: drying: spread the tea dregs on a belt dryer, and dry at a temperature of 85°C until the moisture content is 5±0.2%, to obtain dried tea dregs;
[0039] S4: Soaking: transfer the dried tea dregs into a mixing pot, add ethanol aqueous solution with a mass fraction of 60% ethanol, and wait for 10 minutes to obtain soaked tea dregs; the amount of ethanol is 50% of the dry tea dre...
Embodiment 2
[0043] Embodiment 2: a kind of green tea concentration method comprises the following steps:
[0044] S1: Grinding, primary extraction: put green tea into tea grinder, pass through 30 mesh sieve, take out and sift for primary extraction; primary extraction: put sieved tea powder into agitator, pour temperature at 65°C , with water whose quality is 10 times that of the tea powder, leaching for 30 minutes at a stirring speed of 30 r / min;
[0045] S2: Removing dregs: passing the mixed solution after the first extraction through a 100-mesh sieve to obtain the first extraction solution and tea dregs;
[0046] S3: drying: spread the tea residue on a belt dryer, and dry at a temperature of 85°C until the moisture content is 3±0.2%, to obtain dried tea residue;
[0047] S4: Soaking: transfer the dried tea dregs into a mixing pot, add an aqueous ethanol solution with an ethanol mass fraction of 80%, and wait for 10 minutes to obtain the soaked tea dregs; the amount of ethanol is 10% o...
Embodiment 3
[0051] Embodiment 3: a kind of green tea concentration method comprises the following steps:
[0052] S1: Pulverization, primary extraction: put green tea into tea grinder, pass through 20 mesh sieve, take out the sieve and perform primary extraction; primary extraction: put sieved tea powder into agitator, pour temperature at 80°C , with water 10 times the quality of the tea powder, leaching for 50 minutes at a stirring speed of 30 r / min;
[0053] S2: Removing dregs: passing the mixed solution after the first extraction through a 100-mesh sieve to obtain the first extraction solution and tea dregs;
[0054]S3: Drying: spread the tea residue in a drying box, and dry at a temperature of 100°C until the moisture content is 5±0.2%, to obtain dried tea residue;
[0055] S4: Soaking: transfer the dried tea dregs into a mixing pot, add ethanol aqueous solution with a mass fraction of 65% ethanol, and wait for 10 minutes to obtain soaked tea dregs; the amount of ethanol is 20% of th...
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