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.
DL-CRQ-20Z CTC black tea HRS Gyrovane rotorvane machine mainly used for processing CTC black tea.
DL-6CYQT-90250 mainly used for Oolong tea processing, drum made of bamboo, the activity of withered tea was increased by shaking, It can make tea taste more fragrant, Capacity about 120 kg per batch.
DL-6CHL-RQ10 is small type tea drying machine, can drying for all kind tea, use gas heating, capacity from 40kg to 600kg per hour, temperature and speed adjustable, safety, energy saving and environmental protection
DL-6CHZ-9QB is full stainless steel tea dehydrator, electric heating, drying area about 10sqm, capacity 27-45 kg per batch.
The first monograph on tea science in China and the first monograph on tea in the history of the world is "The Classic of Tea" written by Lu Yu. Explain the tea in detail
One of important process for the black tea is fermentation, use the suitable fermentation machine could control good quality of black tea.
Different green tea drying methods, different machines, green tea strands, and green tea aroma are all different, welcome your contact for more details.
How to process a special needle type green tea, welcome your contact for more details!
1. The effect of temperature on enzymes
There are many enzymes in tea. For example, the presence of polyphenol oxidase can catalyze the oxidation of polyphenols and make the leaves red. If a certain method is used to destroy the activity of polyphenol oxidase, the polyphenols will lose the conditions for the oxidation reaction, so they will not quickly turn red. The "fixation" process in green tea processing is to use high temperature to "Passivation" the activity of enzymes, so that the polyphenols will not be enzymatically oxidized during the subsequent rolling and drying process, thereby maintaining the green leaves of the clear soup.
The purpose of "fixation" is to use high temperature to destroy the oxidase activity, but if it is not handled properly, not only will it not destroy the enzyme activity, but it will increase the enzyme activity, causing red tea leaves and green leaves. It can be seen that the temperature has a duality on the enzyme, that is, it increases the speed of the catalytic reaction. At the same time, the speed of the passivation reaction is also increased under high temperature conditions.
It is irreversible that the enzyme is destroyed by heat, but sometimes the fixation temperature is not high enough, and the enzyme activity is inhibited without being destroyed. After the high temperature is relieved, it will regain vitality, and red stems and green leaves will appear when they are twisted or dried.
