Black Tea Fermentation Methods

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Black tea is the fully fermented tea, the most important part of the producton process is fermentation. Fermentation is to make the grass smell in the tea disapper. The substances inside the black tea are in full contact with the air. Under suitable conditions of temperature and humidity, the polyphenol compounds in the tea are fermented and oxidized to form theaflavins, thearubins,etc. And let the black tea emit a unique aroma.

Normally, the fermentation time of black tea should not be too long. Because during drying, the tea will continue to ferment during the temperature increase phase.

Usually, there are two methods of fermetation, natural fermentation and fermentation machine fermentation (fermentation room fermentation).

1. Natural fermentation

Because the fermentation of black tea require the slightly higher temperature, high humidity and reconstituted oxygen, natural fermetation is usually selected in a breathable container such as bamboo baskets and woonden frames. The thickness of the tea paving is about 10cm, sprinkle with a little clean water, and then cover it with a thin quilt to keep the fermentation tempeature of black tea between 30-35 degrees. If the fermentation temperature exceeds 40 degrees, the tea leaves need to be mixed to dissipate heat to prevent the fermentation from being too intense, the fragrance of the tea leaves to become light, and the color to be dark. In high-temperature weather, it is necessary to observe the state of the tea frequently to aviod damaging the quality of the tea. Advantage: Low cost, black tea can be processed without extra cost. Disadvantage: Due to the hot and humid processing environment, the quilt is used for a long time to breed bacteria and affect the tea; Moreover, it is necessary to constantly observe the changes of the tea leaves, the quality of the tea leaves cannot be controlled, and it is easy to make low-quality tea leaves. Wasting time, wasting artificially and wasting tea leaves.

Manual type black tea fermentation

2. Fermentation machine fermentation

The intelligent black tea fermentiton equipment is mainly used for the fermentiton of black tea and dark tea. With advanced intelligent control box, it can intelligently adjust the temperature and humidity inside the machine, and the fermentation time can be controlled . It is an essential equipment for the production of high-end black tea! The inside of the machine is made of all stainless steel to ensure that black tea is not contaminated during the production process. With the advanced intelligent atomization system, it can ensure that every layer of tea can be fermentated evenly, and the quality of each batch of tea is the same. So that the production of high-end fine black tea can be accurately copied in batches! Advantage: The tea is evenly fermentated, the temperature and the humidity can be controlled, automatic alarm at the end of processing. The stainless steel structure is clean and hygienic, and the produced black tea has the same quality, which is an indispensable equipment for the high-end black tea.

8 Layers 32 Trays Double Door Type Black Tea Oxidation Machine DL-6CFJ-80