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.
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.
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.
The main function is to inject nitrogen gas after the internal vacuum, allowing the tea to ferment in an anaerobic environment, producing more amino acids (GABA is gamma aminobutyric acid). GABA is a natural chemical substance, equipped with fully automatic vacuum pumping, nitrogen injection and tea fermentation functions. At the same time, it can display gas pressure, nitrogen purity, etc. in real time.
Halogen Rapid Moisture AnalyzerIis mainly used to measure the water content of tea and other foods, with an accuracy of 0.01%. The moisture meter is small in size and fast in measurement, which is suitable for various tea plants
Flat type tea press shaping machine mainly for LongJing Tea, through the computer control program, the manual operation processes such as tea feeding, fixation, flat shaping, polishing are changed into computer control, so that the evenness of each batch of tea can be adjusted and controlled
DL-6CRT-75 tea rolling machine has double action, mainly for tea twisting, drum diameter 75cm, capacity about 120 kg per batch.
DL-6CQFJ-70 used for sorting fresh leaf which picked by tea harvester, can separate different sizes of tea for producing different grades of finished tea.
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.