Ginkgo black tea and preparation method thereof
A technology of black tea and ginkgo, which is applied in the field of health beverages to achieve the effects of improving product efficacy, convenient consumption, and stable and reliable quality
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Embodiment 1
[0034] Take ginkgo fruit and crack the shell, remove the husk and the fleshy seed coat of the nut 65kg, break it, soak it in 5 times the amount of ethanol with a concentration of 60% for 48 hours, and infiltrate it at a speed of 1~2ml / 1kg per minute. Filter to obtain percolation liquid, recover ethanol from the filtrate, filter with 200-mesh nylon mesh to obtain concentrated liquid, and set aside; take 25kg of black tea, grind it into 20-mesh coarse powder, add 8 times the amount of pure water, stir and heat at 80°C, Extract twice respectively, the first extraction for 2 hours, the second extraction for 1 hour, combine the extracts, filter with a 300-mesh industrial filter cloth, collect the filtrate and mix it with the ginkgo kernel concentrate. Concentrate the extract to a relative density of 1.40 under the condition of 0.08MPa, dry the extract, and crush it into a 300-mesh fine powder; granulate the above-mentioned fine powder with a 50% ethanol solution, dry it at 60°C to f...
Embodiment 2
[0036] Take ginkgo nuts and crack their shells, remove the shells and 65kg of clean white nuts, break them into pieces, soak them in 60% ethanol with 5 times the concentration for 48 hours, permeate at a speed of 1ml / 1kg per minute, Obtain the percolation liquid, recover ethanol from the filtrate, and filter it with 200-mesh nylon mesh to obtain the concentrated liquid, and set aside; take 10kg of black tea, grind it into 20-mesh coarse powder, add 7 times the amount of pure water, stir and heat at 75°C, and extract Two times, the first extraction is 2 hours, the second extraction is 1 hour, the combined extracts are filtered with a 300-mesh industrial filter cloth, the collected filtrate is mixed with the ginkgo concentrate, and the mixture is kept at a temperature of 60°C and a vacuum of 0.06MPa Concentrate the extract to a relative density of 1.35 under certain conditions, dry the extract, and crush it into a 300-mesh fine powder; granulate the above-mentioned fine powder wi...
Embodiment 3
[0038]Take ginkgo nuts and crack their shells, remove 70kg of whitened nuts after removing the shell and the fleshy seed coat, smash them, soak them in 5 times the amount of ethanol with a concentration of 60% for 48 hours, and infiltrate them at a speed of 1ml / 1kg per minute. Obtain the percolation liquid, recover ethanol from the filtrate, and filter it with 200-mesh nylon mesh to obtain the concentrated liquid, which is used for later use; take 20kg of black tea, grind it into a 25-mesh coarse powder, add 6 times the amount of pure water, stir and heat at 70°C, and extract The second time, the first extraction is 2 hours, the second extraction is 1 hour, the combined extracts are filtered with a 300-mesh industrial filter cloth, the collected filtrate is mixed with the ginkgo kernel concentrate, and the mixture is kept at a temperature of 65°C and a vacuum of 0.05MPa Concentrate the extract to a relative density of 1.30 under certain conditions, dry the extract, and crush it...
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