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Important Process Of Green Tea- Fixation

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Why Is Black Tea In Tight Strips?

Why Is Black Tea In Tight Strips?

2021-07-28 16:02:02

The tight strip shaped black tea is more resistant to brewing, and the straight strip shape is more popular with consumers. Master the rolling technology of black tea, choose the correct rolling equipment, welcome your consultation!

Withering Of Black Tea

Withering Of Black Tea

2021-07-20 15:08:21

Withering is the first process in making black tea. Master the correct withering time and withering temperature to achieve the desired degree of withering.

Making The Flat Shape Green Tea

Making The Flat Shape Green Tea

2021-07-13 17:00:39

Flat green tea makes green tea appear in a different shape from ordinary strip green tea when brewed. Through the production of flat green tea, it can be marketed as a market segment with other forms of green tea.

A Pearl Type Green Tea: Biluochun

A Pearl Type Green Tea: Biluochun

2021-07-12 14:53:03

The shape of green tea is more than just a straight rope shape. Our company introduces the production of green tea in different shapes. Upgrade the grade of tea and increase the selling price of tea,

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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.