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Preparation method of instant tea powder with antioxidant function

An instant tea powder, antioxidant technology, applied in the direction of tea, tea extraction, food science, etc., can solve the problems of difficult utilization of tea protein, low utilization rate, etc., to achieve easy industrial amplification, lower extraction costs, and lower enzyme prices. Effect

Active Publication Date: 2019-04-16
TAIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tea protein is still not easy to utilize, and the status quo of extremely low utilization rate has not changed

Method used

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  • Preparation method of instant tea powder with antioxidant function
  • Preparation method of instant tea powder with antioxidant function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] A preparation method of instant tea powder with antioxidant function comprises the steps:

[0075] S1. Take 500g of tea powder and place it in a temperature-controllable ultrasonic extraction tank, add 20-30L of distilled water, and soak for 30 minutes;

[0076] S2. Add compound lytic enzyme to the soaking solution in step S1 for ultrasonic-assisted enzymolysis extraction. The compound lytic enzyme is compounded by pectinase: cellulase: helicase = 200U: 300U: 100U, and the amount of enzyme added is tea 0.8wt%~2.5wt% of powder dry weight, pH=6~7.5, temperature 35~40°C, ultrasonic power 50~120W, ultrasonic working time 3~5s, intermittent time 1~3s, extraction time 20~120min, enzyme After the solution is finished, filter, and the filtrate and filter residue are respectively standby;

[0077] S3. Add 20-25L of distilled water to the filter residue in step S2, and then add compound protease for ultrasonic-assisted enzymolysis extraction. The compound protease is composed of...

Embodiment 2

[0081] A preparation method of instant tea powder with antioxidant function comprises the steps:

[0082] S1. Take 500g of tea powder and place it in a temperature-controllable ultrasonic extraction tank, add 25-32L of distilled water, and soak for 25 minutes;

[0083] S2. Add compound lysozyme to the soaking solution in step S1 for ultrasonic-assisted enzymolysis extraction. The compound lysozyme is compounded by pectinase: cellulase: helicase = 200U: 300U: 100U, and the amount of enzyme added is tea 0.5wt%~2.0wt% of powder dry weight, pH=6.5~7.5, temperature 32~38°C, ultrasonic power 60~115W, ultrasonic working time 3~4s, intermittent time 1~2s, extraction time 30~110min, enzyme After the solution is finished, filter, and the filtrate and filter residue are respectively standby;

[0084]S3. Add 20-30L of distilled water to the filter residue in step S2, and then add compound protease for ultrasonic-assisted enzymolysis extraction. The compound protease is composed of bromel...

Embodiment 3

[0088] A preparation method of instant tea powder with antioxidant function comprises the steps:

[0089] S1. Take 500g of tea powder and place it in a temperature-controllable ultrasonic extraction tank, add 25-35L of distilled water, and soak for 20 minutes;

[0090] S2. Add compound lytic enzyme to the soaking solution in step S1 for ultrasonic-assisted enzymolysis extraction. The compound lytic enzyme is compounded by pectinase: cellulase: helicase = 200U: 300U: 100U, and the amount of enzyme added is tea 0.8wt%~2.0wt% of powder dry weight, pH=6.2~7.3, temperature 33~39°C, ultrasonic power 70~120W, ultrasonic working time 4~5s, intermittent time 2~3s, extraction time 40~120min, enzyme After the solution is finished, filter, and the filtrate and filter residue are respectively standby;

[0091] S3. Add 15-30L of distilled water to the filter residue in step S2, and then add compound protease for ultrasonic-assisted enzymolysis extraction. The compound protease is composed ...

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Abstract

The invention belongs to the technical field of functional food production, and particularly relates to a preparation method of instant tea powder with an antioxidant function. The tea powder comprises multiple kinds of functional ingredients of tea polyphenol, tea polypeptide, tea polysaccharides and the like. The method comprises the steps that a tea leaf raw material is pulverized, and enzymatic extraction, filtration, centrifugation, homogeneity and mist spraying drying are conducted respectively by low-power ultrasound assisted lywallzyme and protease to prepare antioxidant dried tea powder with better water solubility. The method has the advantages that enzymatic extraction is conducted at a low temperature, the extract is dried instantly at a high temperature to well preserve antioxidant biological activity, the prepared instant tea powder with the antioxidant function has high antioxidant activity and good physical properties and can be used as a functional food additive, and the tea powder can be used a raw material to fill a capsule or used for production functional foods by tabletting.

Description

technical field [0001] The invention belongs to the technical field of functional food production, and in particular relates to a preparation method of instant tea powder with anti-oxidation function. Background technique [0002] Tea is an important beverage in people's daily life, with multiple values ​​such as drinking, nutrition, health care, pharmacology, and humanities. In 2016, China's tea garden area was 2.87 million hectares, with an output of more than 2.4 million tons and a consumption of more than 2 million tons. It has become the world's largest tea producing country and tea consumption market. During the processing of tea and its products, a large number of leftovers such as tea stalks, tea dust, tea dregs and low-quality tea will be produced, turning waste into treasure. The development and utilization of these leftovers and low-quality tea will not only increase the economic benefits of tea factories, And it has good ecological value. [0003] Tea contains ...

Claims

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Application Information

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IPC IPC(8): A23F3/16A23F3/30
CPCA23F3/166A23F3/30
Inventor 祝子坪李娜李钧敏
Owner TAIZHOU UNIV