email

What\'s the best temperature and time for black tea fermentation?

Home > News > Tea Industry NewsWhat\'s the best temperature and time for black tea fermentation?

Hot Products

  • China 20-500 gram Pouch Green Loose Leaf Tea Fill Seal Packing Machine DL-DBZ-500 manufacturer

    20-500 gram Pouch Green Loose Leaf Tea Fill Seal Packing Machine DL-DBZ-500

    As a medium-sized material packaging machine, it can be used for packaging granular and powder products such as tea, nuts, coffee, candy, industrial screws, etc. It has automatic packaging, automatic bag cutting, combined with filter paper and plastic film, and uses a back sealing bag making process. It can produce up to 20 bags per minute.

  • China Nylon Triangle Pyramids Tea Bag Packaging Machine with Outer Bag DL-GDS-SJB manufacturer

    Nylon Triangle Pyramids Tea Bag Packaging Machine with Outer Bag DL-GDS-SJB

    The Nylon Triangle Pyramids Tea Bag Packaging Machine with Outer Bag is a standout in the tea packaging field. Suited for various teas like black, green, oolong, herbal and flower tea. It makes unique triangle pyramid nylon tea bags with a square rubber outer bag for protection and appeal. Packaging speed is 2000 - 4500 bags/min. Innovation lies in precise control and stability. Advanced tech integrates inner and outer bags seamlessly. High-quality materials and sophisticated structure ensure durability. A great choice for tea makers seeking quality and innovation.

  • China L-bar sealer shrink wrap small box book plastic film wrapping heat shrink packing machine DL-450L&DL-BSB-4020 manufacturer

    L-bar sealer shrink wrap small box book plastic film wrapping heat shrink packing machine DL-450L&DL-BSB-4020

    The automatic heat shrink packaging machine for plastic film packaging and sealing is a highly efficient packaging equipment designed to meet the diverse packaging needs of various industries. It uses plastic film to tightly wrap products and then applies heat to shrink the film, ensuring a secure and aesthetically pleasing packaging.

  • China Automatic horizontal tea sachet pack Vacuum packaging machine DL-DZKZX-2S-A manufacturer

    Automatic horizontal tea sachet pack Vacuum packaging machine DL-DZKZX-2S-A

    The vacuum inner film packaging machine is for packaging products like tea. Removes air by vacuuming to prevent oxidation and moisture, prolonging shelf life. Has a high-precision weighing system. Inner film protects products. Easy to operate and efficient, ideal for fresh-keeping packaging.

  • China Multipurpose Dry tea Precise temperature control Electric baking cage DL-6CHBL-20 manufacturer

    Multipurpose Dry tea Precise temperature control Electric baking cage DL-6CHBL-20

    The electric baking cage tea dryer can precisely control the temperature, has rich and diverse functions, is suitable for small tea factories, can replace charcoal baking, and can enhance the aroma of tea.

  • China Semi-Automatic Electric Filter Paper Hidden Cup Machine for Tea DL-DYCB-12 manufacturer

    Semi-Automatic Electric Filter Paper Hidden Cup Machine for Tea DL-DYCB-12

    The Hidden Manual Electric Filter Paper Tea Cup Machine, as a semi-automatic sealing and packaging machine, is suitable for packaging various types of tea. It places tea cups on molds for pressing, precise, fast, simple and easy to use, and can produce an average of 500 cups per hour.

  • China 18V 5.2Ah Lithium Battery Operated Brushless Mini Tea Harvester(Cordless Battery) DL-4CD-35N manufacturer

    18V 5.2Ah Lithium Battery Operated Brushless Mini Tea Harvester(Cordless Battery) DL-4CD-35N

    The DL-4CD-35N Electric Tea Picker has a cutting width of 35cm and is equipped with an 18V 5.2Ah cordless lithium battery to eliminate wire interference during operation. The working time can be up to 8 hours, and it can pick 150 kilograms of fresh tea leaves in one hour.

  • China 1 Stations 15 Ton Pressure Tea Cake Press Molding Machine DL-6CY1-15 manufacturer

    1 Stations 15 Ton Pressure Tea Cake Press Molding Machine DL-6CY1-15

    DL-6CY1-15 mainly used for pressing cake tea, brick tea, chocolate type tea, the pressure and time can be adjusted, using hydraulic control, tea shaping is better. Machine has 1 working stations, 1 workers can operate the machine at the same time, 1 hour can press 35kg cake tea.

news

Why Green Tea Need Fixation?

Why Green Tea Need Fixation?

2024-11-26 14:46:50

Green tea needs fixation to prevent oxidation, Use tea fixation machine to quickly fixation tea leaves, make fresh and high-end tea!

Operating Guide and Scope of Application for Tea Aluminum Foil Large Outer Bag Packaging Machine

Operating Guide and Scope of Application for Tea Aluminum Foil Large Outer Bag Packaging Machine

2024-10-12 15:45:26

This article introduces the operating guide and scope of application of the tea aluminum foil large outer bag packaging machine. In terms of operation, it includes steps such as installation, preparation, loading, setting, operation, monitoring, and cleaning. The scope of application covers the packaging of various types of tea in the tea industry, suitable for large-volume packaging needs. The aluminum foil material can effectively protect against moisture, light, and oxygen, ensuring the freshness and quality of tea. At the same time, it improves packaging efficiency and reduces labor costs.

Comparing Different Models of Vacuum Tea Packaging Machines

Comparing Different Models of Vacuum Tea Packaging Machines

2024-09-28 11:14:14

Analyze and compare various models of vacuum tea packaging machines to help you make an informed decision.

The Magic of Vacuum Tea Packaging Machines: Preserving Tea Freshness

The Magic of Vacuum Tea Packaging Machines: Preserving Tea Freshness

2024-09-28 10:47:41

Explore the wonders of vacuum tea packaging machines and how they play a crucial role in keeping tea fresh.

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

What\'s the best temperature and time for black tea fermentation?

2021-04-22 17:34:49

The purpose of black tea fermentation is to promote profound changes in the contents and prepare a substrate for the formation of the unique color, aroma and taste qualities of black tea. The essence of black tea fermentation is a chemical change process with the profound oxidation of polyphenol compounds as the core. How to control the fermentation time and temperature of black tea?

  Black Tea Fermentation Time

Black tea is normally fermented for 4 to 6 hours. However, the specific fermentation time depends on the age and tenderness of the tea, the cold and hot weather, the dryness, wetness, and the degree of twisting. Generally, young leaves, well-kneaded raw materials, and high-fermentation temperature leaves ferment quickly and the time is relatively short. Otherwise, the time will be longer. I have encountered that it has not been fermented for 12 hours. As long as it is not sour or stuffy during fermentation. The tea maker must keep track of the fermentation progress.

   Fermentation time is only a reference indicator. Whether fermentation should be terminated, or should it be based on the degree of fermentation. Moderate fermentation is generally based on the fact that the leaf color changes to reddish-yellow, the blue aura disappears, and the floral and fruity aroma appears as the standard. If it is mass production, finally use the evaluation method to look at the color of the soup, taste the taste, look at the bottom of the leaf, and check the degree of fermentation. The book says how much temperature and humidity are, and how many hours are normal. The top tea maker only says "watch tea and make tea". The way inside is very mysterious!

DL-6CFJ-80-Continuous-Fermentation-Machine-For-Tea/Black-Tea-Continuous-Oxidation-Fermentation-Machine-For-Tea

Black tea fully automatic fermentation machine

 

  Black Tea Fermentation Temperature

  Temperature has a great influence on fermentation quality, including air temperature and leaf temperature. The level of temperature directly affects the leaf temperature. During the fermentation process, the polyphenol compounds are oxidized and exothermic, which increases the leaf temperature. The leaf temperature has a changing law from low to high and then low. Fermentation leaf temperature should be kept at 30℃, and the temperature should be 24℃~25℃. The temperature and leaf temperature should not be too high or too low. If the leaf temperature is too high and exceeds 40°C, the fermentation changes will be too intense, resulting in low aroma and low taste and dark color, which will seriously damage the quality. Therefore, cooling measures should be taken in the high temperature season, and the spread leaves should be thin to facilitate heat dissipation and cooling. If the temperature is too low, the fermentation time will be prolonged and the endoplasmic transformation cannot be fully developed. Therefore, when the leaf temperature is too low, the leaf layer should be thickened to facilitate heat preservation, and other heating measures should be taken if necessary.

Intelligent black tea fermentation machine