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Method for reducing caffeine in instant tea

A low caffeine and caffeine technology, applied in the direction of reducing the alkali content of tea, can solve the problems of high toxicity, harsh reaction conditions, and difficult reaction process, and achieve the effect of low cost, simple process, and good product quality

Active Publication Date: 2015-08-19
江苏南大耐雀生物技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The method is relatively economical, easy to operate, and can be implemented industrially. It can especially solve the problems of low yield, environmental pollution of reaction reagents, high toxicity, difficult control of the reaction process, and harsh reaction conditions in the background technology.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: the green tea raw material of the present embodiment is finished tealeaves

[0017] The tea concentrate is the green tea concentrate processed by the concentration process during the production and processing of instant tea powder.

[0018] Before resin adsorption, control the volume of treated tea concentrate to be 1000L, the solid content to be 8%, and the temperature to be 40°C. Through HPD-100 macroporous adsorption resin with a volume of 70L (this adsorption resin is produced by Cangzhou Baoen Chemical Co., Ltd., the specification is diameter: height=1:20, pretreatment is carried out before use, and the detection index meets GBT 24395-2009 food industry use Requirements of adsorption resin), during resin adsorption: the flow velocity of the outflow liquid after resin adsorption is 200L / h; Concentrated solution is sent to dry in the vacuum freeze-drying device, obtains 72kg instant tea powder.

[0019] Determination test: take the dissolved tea powder...

Embodiment 2

[0023] Embodiment 2 The raw material of Tieguanyin tea in this embodiment is Maocha

[0024] The tea concentrate is the Tieguanyin tea concentrate processed by the concentration process during the production and processing of instant tea powder. Before the resin adsorption, the volume of the concentrated tea concentrate was controlled to be 800L, the solid content was 10%, and the temperature was 60°C. Through D101 macroporous adsorption resin with a volume of 60L (this adsorption resin is produced by Cangzhou Baoen Chemical Co., Ltd., the specification is diameter: height=1:15, pretreatment is carried out before use, and the detection index conforms to GBT 24395-2009 Adsorption resin for food industry requirements), during resin adsorption: the flow rate of the outflow liquid after resin adsorption is 150L / h; the concentrated solution is sent to dry in a vacuum freeze-drying device to obtain 74kg instant tea powder.

[0025] Determination test: take the dissolved tea powder ...

Embodiment 3

[0029] Embodiment 3 The black tea raw material of this embodiment is finished tea

[0030] The tea concentrate is the black tea concentrate processed by the concentration process during the production and processing of instant tea powder.

[0031] Before resin adsorption, control the volume of treated tea concentrate to be 1000L, the solid content to be 2%, and the temperature to be 65°C. Through HPD300 macroporous adsorption resin with a volume of 50L (this adsorption resin is produced by Cangzhou Baoen Chemical Co., Ltd., the specification is diameter: height=1:6, pretreatment is carried out before use, and the detection index conforms to GBT 24395-2009 Adsorption resin for food industry Requirements), during resin adsorption: the flow rate of the effluent after resin adsorption is 300L / h; the concentrated solution is sent to dry in a vacuum freeze-drying device to obtain 60kg instant tea powder.

[0032] Determination test: take the dissolved tea powder prepared in Example...

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Abstract

The invention discloses a method for reducing caffeine in instant tea. The method is characterized by comprising the following steps: physically adsorbing the caffeine in a concentrated tea solution in an overload adsorption mode by means of non-polar macro-porous adsorbent resin; drying and sub-packaging outflow liquid after overload adsorption to obtain low-caffeine instant tea. According to the method, the removal rate of the caffeine in the concentrated tea solution subjected to resin overload adsorption is greater than 80 percent, and the instant tea prepared by dewatering, drying and packaging the concentrated solution meets the quality requirements of low-caffeine tea.

Description

technical field [0001] The invention relates to a method for reducing caffeine in instant tea, which belongs to the technical field of tea deep processing. Background technique [0002] With the improvement of people's living standards, people have put forward higher health requirements for tea drinks. As we all know, tea has multiple functions such as anti-oxidation, anti-tumor, anti-radiation, lowering cholesterol, preventing arteriosclerosis, etc., and is one of the most popular beverages for consumers. But the caffeine (also known as caffeine) has the effects of exciting the central nervous system and stimulating the heart. The content of caffeine in tea is usually 2%-5%. Adequate intake of caffeine is harmless to healthy adults, but some old people, pregnant women , children, patients with cardiac insufficiency and neurasthenia, taking too much caffeine for a short time after drinking tea may cause restlessness, insomnia, headache and heart palpitations in some people;...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23F3/38
Inventor 魏元刚杨永安易铭钟慧金显友袁继文钟飞
Owner 江苏南大耐雀生物技术有限公司
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