Acid-resistant green tea concentrated juice and preparation method thereof

Abstract

The invention discloses acid-resistance green tea condensed juice and a preparation method thereof. The acid-resistance green tea condensed juice has a formula comprising the following raw materials of 100-500 parts of green tea leaves, 5-60 parts of an acidity adjusting agent, 1-10 parts of an antioxidant and 1-30 parts of a stabilizing agent. According to the preparation method, fragrance compounds in the green tea leaves are extracted out through a fragrance extracting and recovering device but not backfilled into the green tea condensed juice, so that the generation of sour and foul odor of the green tea condensed juice can be well avoided, and the color and the flavor of a green tea beverage are effectively maintained; in addition, the acidity adjusting agent is also added to the prefiltered green tea juice, particularly the mixture is heated, and after the temperature is heated to 40-95 DEG C, the mixture is stirred for 10-100 minutes at constant temperature, so that the PH value of the green tea juice is well adjusted, steady quality of the green tea condensed juice under acid conditions is facilitated, and further green tea beverage products which are prepared by the green tea condensed juice can be still emerald green and bright in color after being stored for 8-10 months under the room temperature of 25-30 DEG C.

Description

technical field [0001] The invention relates to the technical field of tea concentrated juice and a preparation method thereof, and specifically provides an acid-resistant green tea concentrated juice and a preparation method thereof. Background technique [0002] At present, the processing technology of domestic tea concentrated juice manufacturers to prepare tea concentrated juice is simple, generally including the following steps: tea slurry preparation, aroma recovery, separation, primary filtration, concentration, aroma raw material backfilling and sterilization treatment, although this process can make tea The concentrated juice maintains the fragrance of the tea itself, and the tea taste is strong, but because the aroma compounds in the tea are mainly low-boiling aromatics, it is easy to produce sour odor under acidic conditions, and then the tea made from the concentrated juice The quality of tea beverages will deteriorate within a short period of storage under norma...

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Problems solved by technology

[0002] At present, the processing technology of domestic tea concentrated juice manufacturers to prepare tea concentrated juice is simple, generally including the following steps: tea slurry preparation, aroma recovery, separation, primary filtration, concentration, aroma raw material backfilling and sterilization treatment, although this process can make tea The concentrated juice maintains the fragrance of the tea itself, and the tea taste is strong, but because the aroma compounds in the tea are mainly low-boiling aromatics, it is easy to produce sour odor under acidic conditions, and then the tea made from the concentrated juice The quality of tea beverages will deteriorate within a short period of storage under normal temperature conditions, and the flavor and stability of tea beverages are not good

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