email

Withering Of Black Tea

Hot Products

news

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.

What Is Yellow Tea?

What Is Yellow Tea?

2021-08-12 15:56:22

The process of making unique yellow tea is mostly the same as that of green tea. But a critical process has been added. Makes a huge change in the quality and taste of tea.

How To Dry The Black Tea?

How To Dry The Black Tea?

2021-08-04 16:08:21

Mastering the main influencing factors of drying can make black tea drying fully and give play to the unique qualities of black tea. Using the DELI tea drying machine could help you make the good black tea.

Contact us

Quanzhou Deli Agroforestrial Machinery Co., Ltd.
If you want know more about our products, please send email to us : info@delijx.com. You also can send message to our WeChat or WhatsApp : 0086-18120033767

Withering Of Black Tea

2021-07-20 15:08:21

Withering is the first process in making black tea. Under normal climatic conditions, when fresh leaves are thinly spread for a period of time, water evaporates mainly. With the extension of the withering time, the self-extraction and decomposition of the contents of the fresh leaves gradually strengthened. With the continuous loss of fresh leaf water, the leaves gradually shrink, the leaf quality changes from hard to soft, and the leaf color changes from bright green to dark green. At the same time, the endoplasm changes and the fragrance also changes. This process is called withering.

The withering process is the physical change of withering on the one hand, and the chemical change of withering on the other hand. These two changes are interrelated and restrict each other. Physical changes can not only promote chemical changes, but also inhibit chemical changes, and even affect the products of chemical changes. Anyway, chemical changes also affect the progress of physical changes. The development and mutual influence between the two vary greatly depending on the external conditions such as temperature and humidity.

The external conditions that affect withering are firstly water evaporation, secondly temperature, and again the length of time. Among them, temperature has the most significant effect on the quality of withered leaves. When using the tea withering machine to wither, it is advisable to adopt the operating principles of “large first and then small” and temperature “first high and then low”. Master a certain amount of time to achieve the required degree of withering.