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Black Tea Fermentation Methods

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Precision and Purity: Advancing Tea Quality with Automated Sorting and Cleaning Technology

Precision and Purity: Advancing Tea Quality with Automated Sorting and Cleaning Technology

2026-03-21 17:55:51

The final quality of tea is determined not only by its flavor but also by its visual purity and consistency. This blog explores the critical sorting and cleaning stage of tea processing, detailing how modern winnowing, sifting, and color sorting technologies eliminate impurities and grade leaves with incredible precision. Learn how automating these steps can drastically increase your factory’s output while meeting the highest international food safety standards.

The Science of Preservation: Optimizing Efficiency with Advanced Tea Drying Technology

The Science of Preservation: Optimizing Efficiency with Advanced Tea Drying Technology

2026-03-21 17:53:43

Drying is the final and critical stage in tea manufacturing that locks in flavor, aroma, and essential nutrients. This blog delves into the technical requirements of the drying process and explains how transitioning to modern automated drying systems can maximize factory throughput while ensuring consistent leaf quality. Discover the advantages of high-capacity chain plate and rotary drying solutions.

Efficiency in Tea Processing: How Modern Tea Rolling Machines Transform Production

Efficiency in Tea Processing: How Modern Tea Rolling Machines Transform Production

2026-03-21 17:51:34

Rolling is a pivotal stage in tea manufacturing that defines the leaf's shape and flavor profile. This blog explores the importance of the rolling process and how upgrading to high-efficiency rolling machines can significantly reduce manual labor while maintaining premium quality. Learn how modern mechanical rolling optimizes cell-breaking and juice extraction for a superior brew.

From Leaf to Powder: The Ultimate Guide to Professional Matcha Production Processes

From Leaf to Powder: The Ultimate Guide to Professional Matcha Production Processes

2026-03-21 16:51:30

Matcha is not just ground green tea; it is the result of a rigorous, multi-step artistic and scientific process. This blog explores the essential stages of matcha manufacturing—from specialized shading and steaming to the critical final grinding. Discover how advanced milling technology, like high-mesh ball mills, transforms Tencha into the vibrant, silky powder prized worldwide.

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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