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Important Process Of Green Tea- Fixation

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What Is Dark Tea?

What Is Dark Tea?

2021-10-08 14:00:04

Dark tea is one of the six major teas in China, with a long history of development. At the same time, scientific research has also found that this type of tea is rich in various trace elements beneficial to the human body, which can regulate the body\'s internal balance.

Processing 25kg Finished Oolong Tea By Machines

Processing 25kg Finished Oolong Tea By Machines

2021-09-28 14:47:40

How to processing oolong tea by machines? Oolong tea is a kind of tea with complicated process steps. Our company is located in famous oolong tea hometown, supply machines from withering to drying. Welcome your contact!

How To Make 25KG Finshied Black Tea By Machines?

How To Make 25KG Finshied Black Tea By Machines?

2021-09-07 14:51:40

How to process 25kg striped black tea from 100kg fresh tea leaf ? striped black tea need tea withering process, rolling process, tea fermentation and drying, here are machines for your reference and checking.

How To Make 25Kg Finished Green Tea By Machine?

How To Make 25Kg Finished Green Tea By Machine?

2021-09-01 16:14:22

Machines for making green tea, need four steps, tea withering, tea fixation, tea rolling, and tea drying. Mastering the correct processing method will help you make high-end quality tea.

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Quanzhou Deli Agroforestrial Machinery Co., Ltd.
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Important Process Of Green Tea- Fixation

2021-06-29 16:32:11

1. The effect of temperature on enzymes

There are many enzymes in tea. For example, the presence of polyphenol oxidase can catalyze the oxidation of polyphenols and make the leaves red. If a certain method is used to destroy the activity of polyphenol oxidase, the polyphenols will lose the conditions for the oxidation reaction, so they will not quickly turn red. The "fixation" process in green tea processing is to use high temperature to "Passivation" the activity of enzymes, so that the polyphenols will not be enzymatically oxidized during the subsequent rolling and drying process, thereby maintaining the green leaves of the clear soup.

The purpose of "fixation" is to use high temperature to destroy the oxidase activity, but if it is not handled properly, not only will it not destroy the enzyme activity, but it will increase the enzyme activity, causing red tea leaves and green leaves. It can be seen that the temperature has a duality on the enzyme, that is, it increases the speed of the catalytic reaction. At the same time, the speed of the passivation reaction is also increased under high temperature conditions.

It is irreversible that the enzyme is destroyed by heat, but sometimes the fixation temperature is not high enough, and the enzyme activity is inhibited without being destroyed. After the high temperature is relieved, it will regain vitality, and red stems and green leaves will appear when they are twisted or dried.