Lotus leaf is rich in alkaloids, flavonoids, volatile oils, organic acids, vitamin C, beta-carotene, steroids, saponins and other active ingredients,can regulate fat, reduce blood pressure, resist oxidation, inhibit hypercholesterolemia,atherosclerosis,bacteria and antispasmodic.Moreover, lotus leaf has abundant resources, wide sources and low price, so lotus leaf health care tea drinks have broad development prospects.
The most suitable water removing way of lotus leaf tea is microwave water removing machine.The lotus leaves obtained by microwave water removing machine are green and more vivid, with bean flavor and soluble sugar content about 2% higher than that of steam killing.
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Advantages of Microwave tea water removing machine produced by Leader Microwave Equipment Company in processing lotus leaf tea:
1.Good economic returns
The results showed that the processing cost of microwave tea killing machinery decreased by 0.127 yuan per kg, with a decrease rate of 35%.Compared with traditional drying method, microwave drying cost of tea increased by 14%.By comprehensive comparison, the production cost of microwave green tea is 0.061 yuan per kilogram lower than the traditional method, and the processing cost is 8.5% lower.Meanwhile, the market price of tea processed by microwave tea killing device is 30% higher than that processed by traditional methods.
2.Good social benefits
Microwave tea finishing production line improves tea quality.Microwave tea water removing machine improves the quality of tea processing,Its color, aroma, taste and shape remain unchanged, and its nutritional content is less lost.It has completely reached the quality standard and export standard of famous and excellent tea in China.
Microwave tea water removing machine reduces labor intensity.Because the technology is completely automatic control, tea workers are only engaged in the process of finishing and drying tea leaves, and they are engaged in extremely low-intensity feeding operations.
Not only do not need to do heavy work, but also do not have to worry about the quality of green tea drying.Microwave tea killing system greatly improves the working conditions of workers and reduces the labor intensity.
3.Good ecological benefits
Microwave tea water removing machine can reduce the environmental pollution.Traditional ways of killing green tea, such as burning coal to kill green tea, not only pollute the environment with smoke, but also cause a lot of dust in the workplace.It not only affects the health quality of tea, but also adversely affects the health of tea workers.But the tea microwave water removing machine solved these problems.
Microwave water removing machine ensures the health quality of tea.Microwave has an effective bactericidal and enzymatic function. The content of harmful bacteria in the tea processed by microwave drying machine is far lower than the hygienic standard of tea drinking.
According to the determination, the application of microwave tea water removing machinery, escherichia coli, mold and other harmful bacteria are basically killed, which is one of the important factors to improve the quality of tea processing.It is also one of the important guarantees for tea safety and assured export.
Microwave water removing machine reduces pesticide residue.This technique allows for the problem of pesticide residues on tea leaves. Only applicable pesticide residues on the market can be used, and it is convenient to treat pesticide residues on tea leaves at the same time.
Traditional processing methods:
Traditional processing methods are difficult to ensure the thorough finish, coupled with mechanical structure and other reasons, often resulting in the color of lotus leaf tea is not green enough, rough shape, dark color, taste is relatively thin,yellow soup color,red stems at the bottom of the leaf, and smoke coke taste is serious, easy to change color in the storage process, and too much broken tea.
By heating fresh leaves, fixing technology inhibit enzyme activity and release some water.The enzymes in tea exist in the mitochondria of tea cells. The widely used conduction heating and killing method is difficult to rapidly increase the temperature of tea and the activity of passivating enzymes. In addition, the movement of tea promotes the oxidation of polyphenols and produces the phenomenon of red stem and red leaf, which reduces the quality of tea.
If adopt the method of improving the cavity temperature,it is easy to produce coke side or stuffy yellow phenomenon, resulting in a decline in the tea quality.Many areas in China use roller fixing machine to produce famous tea. After water removing,fresh bud leaves and high temperature drum fully contact and collide, appearing curly and contract phenomenon, while the late plastic, it is hard to polishing rough appearance.
Mechanism of microwave fixing and drying equipment for tea:
When the microwave radiation of microwave generator penetrates to the lotus leaf and its interior,it induces the water and other polar molecules of the lotus leaf to rotate synchronously, so as to generate instantaneous friction heat on the lotus leaf, resulting in simultaneous heating of the surface and interior of the lotus leaf.
Moreover, the internal temperature is higher than the surface temperature of the lotus leaf, which makes a large number of water molecules escape from the lotus leaf and take away by evaporation, so as to achieve the purpose of fixing and drying.
In addition to lotus leaf tea production, Microwave water removing machine can also be widely used in fresh chrysanthemum, medicinal flowers, dehydrated vegetables and food preservation and other agricultural and sideline product processing sterilization drying, such as sugar microwave drying equipment, microwave agricultural and sideline product sterilization equipment.Microwave technology will replace the traditional heat transfer heating, killing and drying methods.
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