Method for prepn. beverage contg. black tea
A production method and technology of black tea, applied in tea, tea extraction, tea treatment before extraction, etc., can solve the problem that the quality of black tea beverages cannot be guaranteed for a long time, and achieve the effects of stable product quality, fresh taste, and high content
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Embodiment 1
[0011] Take 100kg of dry green tea, add 1500L of hot water at 85°C, stir and soak in the extraction tank for 30 minutes, take out the tea, filter out the tea dregs, cool the tea to 38°C, and pump it into 3m 3 Add 50kg of pre-prepared fresh tea leaves to the fermenter, stir for 2 minutes, lower the temperature to 35°C, adjust the pH value to 5.5, feed in oxygen and stir for 30 minutes, when the tea soup turns black tea soup color through oxidation reaction, stop the reaction , rough filtration to remove slag, and then separated by a high-speed centrifuge (18000 rpm) and filtered with a 0.5 μm ceramic membrane to obtain 1300L of clarified black tea soup. The black tea soup is prepared according to the concentration ratio required by the black tea beverage, sterilized, and canned Get the black tea drink. Or the black tea soup is concentrated through a reverse osmosis membrane to obtain 80 L of black tea concentrated juice with a solid content of 20%. Or the concentrated juice is...
Embodiment 2
[0013] Add 100kg of dry green tea, add 30% ethanol solution, heat to 60°C in an extraction tank, extract for 40 minutes, filter off the tea residue, cool the tea water to 45°C, put 50kg of pre-mashed fresh tea leaves in the fermentation tank, Adjust the pH value to 5.5, feed in oxygen and stir for 30 minutes to remove the slag. After being centrifuged in a high-speed centrifuge, concentrate with a rising film concentrator (temperature 65°C, vacuum degree 0.07Mpa), recover ethanol for repeated use, and spray-dry the concentrated solution (inlet temperature 180°C, outlet temperature 90°C) to obtain instant pink 14.5kg of tea.
Embodiment 3
[0015] Dissolve 20kg of green tea instant tea powder in 600L of water, and place in 1m 3 In the reaction kettle, adjust the temperature to 35°C, adjust the pH value to 5.5, add 60kg (fresh) of tea leaves prepared in advance, pass in oxygen, and carry out oxidation reaction for 35 minutes. / min high-speed centrifugation, rising film evaporator concentration (temperature 65 ℃, vacuum tightness 0.08Mpa), through freeze-drying, obtain instant black tea powder 14.5kg.
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