Method for processing high-GABA (Gamma-aminoacid butyric acid) low-caffeine black tea powder
A technology of low-caffeine black tea and a processing method, which is applied in the directions of tea, tea extraction, tea treatment before extraction, etc., can solve problems such as affecting sleep quality, and achieve the effect of high GABA content and low caffeine content
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[0057] Example 1
[0058] A kind of processing method of high GABA, low caffeine black tea powder, comprises preparation black tea crushed tea, supercritical CO 2 Decaffeinated, extracted and freeze-dried;
[0059] The steps for preparing crushed black tea are as follows:
[0060] 1-1: Soak fresh black tea leaves with 1.5% glutamic acid aqueous solution for 4.5 hours;
[0061] 1-2: Wash the soaked fresh black tea leaves with water, and then dehydrate to remove the surface moisture of the fresh black tea leaves;
[0062] 1-3: Naturally wither the dehydrated fresh black tea leaves to tea leaves with a water content of 60%; the ambient temperature of the natural withering is 28°C, and the ambient humidity is 70%;
[0063] 1-4: Knead the tea leaves until the cell damage rate exceeds 80%, and more than 90% of the leaves are formed into strips, and the kneading time is 70 minutes;
[0064] 1-5: Ferment the rolled tea leaves in the fermentation room for 4.5 hours, the fermentation ...
Example Embodiment
[0079] Example 2
[0080] A kind of processing method of high GABA, low caffeine black tea powder, comprises preparation black tea crushed tea, supercritical CO 2 Decaffeinated, extracted and freeze-dried;
[0081] The steps for preparing crushed black tea are as follows:
[0082] 1-1: Soak fresh black tea leaves with 1% glutamic acid aqueous solution for 6 hours;
[0083] 1-2: Wash the soaked fresh black tea leaves with water, and then dehydrate to remove the surface moisture of the fresh black tea leaves;
[0084] 1-3: Naturally wither the dehydrated fresh black tea leaves to tea leaves with a water content of 55%; the ambient temperature of the natural withering is 25°C, and the ambient humidity is 60%;
[0085] 1-4: Knead the tea until the cell damage rate is above 80%, and the leaves are more than 90% into strips; the kneading time is 60 minutes;
[0086] 1-5: Put the rolled tea leaves in the fermentation room for 3 hours to ferment, the fermentation temperature is 25...
Example Embodiment
[0101] Example 3
[0102] A kind of processing method of high GABA, low caffeine black tea powder, comprises preparation black tea crushed tea, supercritical CO 2 Decaffeinated, extracted and freeze-dried;
[0103] The steps for preparing crushed black tea are as follows:
[0104] 1-1: Soak fresh black tea leaves with 2% glutamic acid aqueous solution for 3 hours;
[0105] 1-2: Wash the soaked fresh black tea leaves with water, and then dehydrate to remove the surface moisture of the fresh black tea leaves;
[0106] 1-3: Naturally wither the dehydrated fresh black tea leaves to tea leaves with a moisture content of 65%; the ambient temperature of the natural withering is 30°C, and the ambient humidity is 80%;
[0107] 1-4: Knead the tea until the cell damage rate is above 80%, and the leaves are more than 90% into strips; the kneading time is 80 minutes;
[0108] 1-5: Put the rolled tea leaves in the fermentation room to ferment for 6 hours, the fermentation temperature is...
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