The 20 "" 58 cc chainsaw bar with GN5800 petrol chainsaw machine is a high performance cutting tool designed for various applications. It has a two -act fuel engine with 58 cm3, offering a robust power for an effective cut. The length of the 20 -inch bar, associated with an appropriate chain, allows a smooth and effective cut through thick branches, logs and other wooden materials.
The automatic automatic packaging machine for packaging and sealing of plastic movies is a very effective packaging equipment designed to meet the various packaging needs of various industries. He uses a plastic film to closely pack the products, then applies heat to shrink the film, thus guaranteeing a safe and aesthetic packaging.
The 24V Cordless Electric Mini Portable Tea Harvesting Machine, model 4C - 35, is a highly efficient and convenient tool designed for tea picking. With dimensions of 520180190 mm, it offers a compact and portable design, making it easy to carry and operate in tea gardens. Powered by a voltage range of 16V - 31V and equipped with two 18V5Ah batteries, this machine ensures stable and continuous performance. It features a high revolution speed of 10500r/min and a revolution ratio of 4.3:1, enabling efficient cutting. The 350 mm blade length is ideal for effective tea leaf harvesting. Weighing only 1.1 kg, with a gross weight of ≤5.5kg, it is lightweight, reducing operator fatigue and enhancing productivity during tea picking tasks.
Lithium battery trimmer 3CX-30D Lithium Battery Trimmer is designed for precision tea garden management. It features a precision gearbox co-developed with Japanese and German technologies and diamond-coated blades, enabling ±15° multi-angle cutting adjustment. The lightweight body with ergonomic non-slip handles suits long-term operation.
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.
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.
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.
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.
For tea farmers, the black tea processing sometimes has a bitter and astringent taste, which reduces the quality of black tea and reduces sales. Black tea is fully fermented tea. If some black teas are found to have a bitter taste, then we must first know what substances cause the bitterness of tea.
Astringency: The main component is polyphenols.
Bitterness: The main components are caffeine, anthocyanin and tea saponin.
Based on this, we judged that the bitter taste of black tea is because there are too many polyphenols and caffeine in the tea soup. In fact, the content of polyphenols in black tea is relatively low in the six major tea categories. The main reason is that with the increase of fermentation degree, the content of tea polyphenols will decrease. When black tea is fermented, tea polyphenols are enzymatically oxidized into theaflavins and thearubigins, and the content of tea polyphenols will eventually decrease by more than 90%. Therefore, under normal circumstances, the bitterness of black tea is very low.
I tried to brew it for a while. If the soup is out for more than 30 seconds, it does feel bitter and sour. Obviously, this is one reason, that is, the problem caused by the wrong method of brewing the tea-the water temperature is too high and the brewing time is too long, which will lead to bitterness. degree increase.
Now that we know the origin of the bitterness, is there any other situation? Studies have shown that the production process of black tea and the material of the tea will have an impact.