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Quickly dissolving tea powder, and its processing art

A technology of instant tea powder and processing technology, which is applied in the direction of tea extraction, etc., can solve the problems of unsatisfactory microwave extraction yield, complicated freeze-drying equipment, and easy destruction of ingredients, and achieves inhibition of oxidative browning, high yield, and extraction short time effect

Inactive Publication Date: 2005-11-09
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the yield of microwave extraction is not ideal, and there may be a phenomenon that the components are easily destroyed; moreover, the freeze-drying equipment is complicated and requires a large investment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1, a kind of instant tea powder, its processing technology takes the tealeaves of green tea as raw material, through following steps successively:

[0015] 1), extraction step: chop 5Kg of tea leaves, soak the tea leaves in 75Kg of 15% ethanol aqueous solution for 45 minutes at a temperature of 40°C and an ultrasonic frequency of 40kHz, and then filter through a 40-mesh sieve Obtain filtrate I and filter residue; then under the action of ultrasonic waves with a temperature of 40°C and an ultrasonic frequency of 40kHz, soak the above filter residue in a 75Kg concentration of 65% ethanol aqueous solution for 45 minutes, and filter through a 60-mesh screen to obtain filtrate II and filter residue; After mixing the filtrate I and the filtrate II, filter through a 200-mesh sieve to obtain an extract;

[0016] 2) Filtration step: After the above-mentioned extract is preliminarily filtered, then perform ultrafiltration, the ultrafiltration is carried out at room tem...

Embodiment 2

[0020] Embodiment 2, a kind of instant tea powder, its processing technology takes the tealeaves of oolong tea as raw material, through following steps successively:

[0021] 1), extraction step: chop 5Kg of tea leaves, soak the tea leaves in 60Kg of 20% ethanol aqueous solution for 45 minutes at a temperature of 40°C and an ultrasonic frequency of 40kHz, and then filter through a 60-mesh sieve Obtain filtrate I and filter residue; then under the action of ultrasonic waves with a temperature of 40°C and an ultrasonic frequency of 40kHz, soak the above filter residue in a 60Kg concentration of 55% ethanol aqueous solution for 25 minutes, and filter through a 60-mesh screen to obtain filtrate II and filter residue; After the filtrate I and the filtrate II are mixed, the extract is obtained by filtering through a 180-mesh sieve;

[0022] 2) Filtration step: After the above-mentioned extract is preliminarily filtered, then perform ultrafiltration, the ultrafiltration is carried ou...

Embodiment 3

[0026] Embodiment 3, a kind of instant tea powder, its processing technology takes the tealeaves of green tea as raw material, through following steps successively:

[0027] 1), extraction step: chop 5Kg of tea leaves, soak the tea leaves in 50Kg of 25% ethanol aqueous solution for 30 minutes at a temperature of 40°C and an ultrasonic frequency of 40kHz, and then filter through a 60-mesh sieve Obtain filtrate I and filter residue; then under the action of ultrasonic waves with a temperature of 40°C and an ultrasonic frequency of 40kHz, soak the above filter residue in a 50Kg concentration of 60% ethanol aqueous solution for 30 minutes, and filter through a 40 mesh screen to obtain filtrate II and filter residue; After mixing the filtrate I and the filtrate II, filter through a 160-mesh sieve to obtain an extract;

[0028] 2) Filtration step: After the above-mentioned extract is preliminarily filtered, then perform ultrafiltration, the ultrafiltration is carried out at room tem...

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PUM

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Abstract

An instant tea powder is prepared from tea leaf through extracting, filtering, reverse-osmosis concentrating and drying. It has high solubility and strong tea smell.

Description

technical field [0001] The invention relates to an instant tea and its processing technology, in particular to an instant tea powder and its processing technology. Background technique [0002] With the acceleration of the pace of life, instant beverages have become more and more accepted by people. As a traditional Chinese beverage, tea has a long history, but because it is inconvenient and inconvenient to drink, it does not conform to the fast pace of modern people; A new type of instant edible product for quick consumption. There are domestic technologies for the production of instant tea powder. Among these technologies, the manufacturing method of instant tea powder is mostly hot water leaching, the tea is filtered and separated through filter cloth or filter, and then concentrated in a vacuum, and finally spray-dried or dried. Freeze dried. However, this traditional method has poor cold solubility, and causes the tea polyphenols, caffeine and other substances in the...

Claims

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Application Information

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IPC IPC(8): A23F3/16
Inventor 李铎谢勇张治国
Owner ZHEJIANG UNIV
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