Welcome To b2b168.com, Join Free | Sign In
中文(简体) |
中文(繁體) |
Francés |Español |Deutsch |Pусский |
| No.6730548
- Product Categories
- Friendly Links
Information Name: | Microwave Tea fixing equipment supply |
Published: | 2010-09-05 |
Validity: | 60 |
Specifications: | Custom |
Quantity: | 1.00 |
Price Description: | 98,800 yuan / station |
Detailed Product Description: | Tea processing is a traditional industry. In order to improve the quality of tea processing and industrial modernization, the need to add in the tea industry and deep processing industry in the early application of new science and technology, and advanced microwave technology in the tea has a good prospect. Microwave is between the 3OMHz-300000MHz high between radio and light waves. Currently, the application in the food industry center wavelength of the microwave device 0.328m (frequency 915MHz) or 0.1225m (frequency of 2450MHz). First, the microwave fixation of the tea production of green tea, oolong tea, need to crank up heat treatment to inactivate the polyphenol oxidase activity, evaporation of the water, volatile smell the grass, soften the tissue. Roasted on the current production of commonly used way of fixing processing, fixing a few places use the steam method. The results showed that the microwave to kill and Roasted education of good quality tea processing methods, no significant differences, but the short time of microwave fixation (for Roasted time 1 / 8) can be continuous. The high water content of the steam fixing the steam, the outer layer of raw materials affected by heat, so after fixing almost no weight loss tea, some of the destruction of chlorophyll, nutrients contained in raw materials and partly with the condensing water loss, the quality is not ideal. Application of microwave fixation mainly in tea is its thermal effects. When the magnetron generating microwave, shine tea on the tea inside the polar molecule by the impact of cyclical changes in microwave, microwave with the activities carried out periodically. The microwave frequency is high, so high-speed collision of tea internal molecular friction and heat generated a lot of rapidly increasing the temperature of the material to achieve the rapid warming effect. Second, the microwave drying of tea, hot air drying process of the general material external heat, dry surface, inward heat transfer, moisture diffusion in the direction of transmission in the opposite direction, out of the water evaporation. The internal heating by microwave, rapid heat up the site of high water content. Therefore, the microwave drying process, the moisture migration from the inner to the outer layer of fast drying faster than air drying. Drying in the microwave drying of tea has the following advantages: (1) fast drying; (2) product quality; As the tea is not too high surface temperature, chlorophyll a small change, but resistance to emerald green color of possession, less loss of aroma and dry uniform; the same time as water evaporates fast, easy to form porous, water-based products, the complex is good, when the contents of soluble tea out. Third, the microwave in the tea and mildew in the application of pesticides in the storage and transportation process of tea prone to insects, Ottawa heap in the black tea process also occurs insect pollution. Over the past fumigation insecticide methods commonly used drugs, but there is the problem of drug residues. Microwave processing can make good use of the insecticidal effect of the insecticidal effect of tea and tea insects and parasites closely related to the dielectric properties, when the tea water content less than 12% and boosting the effect of pesticides. Tea in the processing and storage in damp moldy easily reduced quality. The experiment shows that microwave technology has excellent tea fungus killing effect |
Admin>>>
You are the 5063 visitor
Copyright © GuangDong ICP No. 10089450, Microwave Equipment Co., Ltd. Jinan Long Extension All rights reserved.
Technical support: ShenZhen AllWays Technology Development Co., Ltd.
AllSources Network's Disclaimer: The legitimacy of the enterprise information does not undertake any guarantee responsibility
You are the 5063 visitor
Copyright © GuangDong ICP No. 10089450, Microwave Equipment Co., Ltd. Jinan Long Extension All rights reserved.
Technical support: ShenZhen AllWays Technology Development Co., Ltd.
AllSources Network's Disclaimer: The legitimacy of the enterprise information does not undertake any guarantee responsibility