CN1157104A

CN1157104A - Method for preparing clear tea drink

Info

Publication number: CN1157104A
Application number: CN 95119540
Authority: CN
Inventors: 武长安; 叶劲松
Original assignee: TIANJIN CITY FINE CHEMICAL TECHNOLOGY DEVELOPMENT CENTER; WUHU YISHUI DRINKING PRODUCT CO Ltd
Current assignee: TIANJIN CITY FINE CHEMICAL TECHNOLOGY DEVELOPMENT CENTER; WUHU YISHUI DRINKING PRODUCT CO Ltd
Priority date: 1995-12-22
Filing date: 1995-12-22
Publication date: 1997-08-20

Abstract

The preparation process of clear tea beverage includes the following steps: screening raw material, soaking, filtering, secondary soaking, secondary filtering, mixing and regulating pH value, standing still and separation, dilution, flavouring and filling. The advantage of said invention lies in that it not only retains the original flavour of tea, but also can be stored for a long period free from cloudy deterioration.

Description

The manufacture method of clear tea drink

The invention belongs to food processing field, particularly a kind of is the manufacture method of the clear tea drink of primary raw material with Qimen tea, compound green tea and oolong tea.

The present invention's manufacture method of tea beverage in the past is with effective ingredient in the water extraction tea, crosses and filters to remove tea grounds, and secondary filter is diluted after removing subparticle again, is equipped with flavor enhancement, gained teas beverage after the can sterilization.But the tea beverage that produces with the method, because the result that the various macromolecular compounds of caffeine, tannin, amino acid, carbohydrate in the extract of tea are separated out, be prone to dregs or precipitation, for addressing the aforementioned drawbacks the Ceng Youyong milipore filter tea juice is filtered, promptly macromolecular material is held back and obtained clarified solution by the hollow fiber ultrafiltration membrane of aperture 2-4 ten thousand molecular weight, but big to the working substance loss with the method, filtering floccule still occurs after placing a period of time.So also useful commentaries on classics dissolution method is about to strong tea juice and transfers polymer substance to water-soluble substances with NaOH under 100 ℃, but the tea juice color and luster of handling with the method is denseer, and taste is not good enough.

The objective of the invention is to overcome above-mentioned defective, provide a kind of maintenance former tea local flavor, preserve for a long time and the manufacture method of the clear tea drink that do not become turbid.

The objective of the invention is to realize with following method: the manufacture method of clear tea drink comprises the steps:

1, raw material screening: with Qimen tea, compound green tea or oolong tea is raw material tealeaves;

2, soak: temperature be in 40-90 ℃ the water with raw material infusion of tea 3-10 minute, the weight ratio of water and raw material tealeaves is 10-20: 1;

3, filter: to be 100 filter screen with the order number with the infusion of tea liquid of step 2 filter obtains a secondary clearing tea juice;

4, soak: step 3 is filtered the tealeaves that soaks that retains soak according to step 2 again, at this moment water is 6: 1 with the weight ratio of soaking tealeaves again;

5, refilter: be 100 filter screen with the order number with the soak of step 4 filter 2 secondary clearing tea juice;

6, mixing and adjustment acid-base value: a tea juice is mixed with secondary tea juice, use phosphoric acid regulating ph value 3-4;

7, standing separation: step 6 tea blend juice is cooled to below 20 ℃, and the fining agent aluminium oxide that adds 0.5-2% stirs, and leaves standstill 4-20 hour, separates with centrifuge and takes out clarification tea;

8, dilution and seasoning: with step 7 tea blend juice dilution 3-5 doubly, be equipped with sweetener and acid seasoning;

9, can: with can behind step 8 heat sterilization in container.Above-mentioned fining agent can also be the organic matter polyacrylamide.

The invention will be further described below in conjunction with embodiment:

Embodiment 1: get Keemun black tea 10Kg, add 90 ℃ of water 160Kg, soaked 10 minutes, through the number of looking over so as to check is that 100 strainer filtering gets tea juice one time, the tealeaves that soaks that filtration is retained adds 60Kg90 ℃ of hot water and soaks, refilter post-defecation tea juice, with one, post-defecation tea juice mixes with phosphoric acid regulating ph value to 3, and lowers the temperature below 20 ℃, adds 1.6Kg fining agent aluminium oxide and stirs 0.5 hour, leave standstill and separate to take out clarification tea juice with centrifuge in 24 hours, add 480Kg water, 57Kg sugar, 2Kg citric acid, can is promptly made clarification Keemun black tea beverage after being heated to 95 ℃ of sterilizations in can.

Embodiment 2: get compound green tea 10Kg, add 80 ℃ of hot water 160Kg, soaked 5 minutes, through the order number is that 100 strainer filtering gets tea juice one time, the tealeaves that soaks that filtration is retained adds 60Kg90 ℃ of hot water and soaks, refilter post-defecation tea juice, with one, post-defecation tea juice mixes with phosphoric acid regulating ph value to 4, and lower the temperature 18 ℃, under agitation add fining agent polyacrylamide 1Kg, stirred 0.5 hour, left standstill 24 hours, separate taking-up clarification tea juice with centrifuge, add 480Kg water, be equipped with 57Kg sugar, the 2Kg citric acid, can is promptly made the compound green tea beverage of clarification after being heated to 90 ℃ of sterilizations in container.

Claims

1, a kind of manufacture method of clear tea drink, it is characterized in that: it comprises the steps:

(1) raw material screening: with Keemun black tea, compound green tea or oolong tea is raw material;

(2) soak: temperature be in 40-90 ℃ the water with raw material infusion of tea 3-10 minute, the weight ratio of water and raw material tealeaves is 10-20: 1;

(3) filter: be that the infusion of tea liquid of 100 filter screen step (2) filters and obtains a secondary clearing tea juice with the order number;

(4) soak: step (3) is filtered the tealeaves that soaks that retains soak according to step (2) again, at this moment water is 6: 1 with the weight ratio of soaking tealeaves again;

(5) refilter: be 100 filter screen with the order number with the soak of step (4) filter 2 secondary clearing tea juice;

(6) mixing and adjustment acid-base value: a tea juice is mixed with secondary tea juice, use phosphoric acid regulating ph value 3-4;

(7) standing separation is cooled to step (6) tea blend juice below 20 ℃, and the fining agent aluminium oxide that adds 0.5-2% stirs, and leaves standstill 4-20 hour, separates with centrifuge and takes out clarification tea juice;

(8) dilution and seasoning: with step (7) tea blend juice dilution 3-5 doubly, be equipped with sweetener and acid seasoning;

(9) can: with can behind step (8) heat sterilization in container.

2, the manufacture method of clear tea drink according to claim 1 is characterized in that: described fining agent can also be the organic matter polyacrylamide.