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Disposable tea processing technology

A processing technology, a technology for washing-free tea, which is applied in the direction of pre-extraction tea treatment, food preparation, food science, etc., can solve the problem of pesticide residues and heavy metals not being removed, and achieves improved quality, hygiene and safety, and tea aroma. , the effect of degrading pesticide residues

Inactive Publication Date: 2015-06-03
HANGZHOU EFUTON TEA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this treatment improves the cleanliness of the tea, it has no effect on the removal of pesticide residues and heavy metals in the tea.

Method used

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  • Disposable tea processing technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take the production of 10kg green tea disposable tea as an example to describe in detail.

[0020] Take 10kg of dry green tea and slowly add it to the inlet of the electrostatic sorting device. After being sorted, the material is placed on the conveyor belt from the outlet at a constant speed, and then enters the inlet of the color sorter through the electromagnetic cleaning device. Classification is carried out in the sorting machine. After classification, the materials flow into different conveyor belts and are transferred to the next process. After color selection, the tea leaves enter the ozone-microwave device. The ozone concentration is 5mg / L, the microwave processing power is 0.2w / g, and the microwave processing time is 5min. , and the microwave treatment is intermittent treatment, every 1min for 30s, the above ozone treatment and microwave treatment are carried out at the same time, and the degradation rate of pesticides is 95%.

[0021] After the ozone-microwav...

Embodiment 2

[0024] In Example 1, the parameters of ozone-microwave treatment are changed to: adopt ozone concentration 6mg / L, microwave treatment power 0.2w / g, microwave treatment time 5min, and microwave treatment is intermittent treatment, every 1min treatment 30s, pesticide degradation The rate reached 98%.

[0025] Using ozone-microwave to degrade pesticide residues in tea leaves will not affect the active ingredients in tea leaves. The degradation rate of pesticide residues in tea leaves can be as high as 98%, and can enhance the aroma of tea leaves; supercritical complexation extraction is used to remove residues in tea leaves The removal rate of heavy metal components reaches 90%, and the complexing agent will not remain in the tea leaves. After the removal, the residual heavy metal content in the tea leaves is lower than the national general food hygiene standards. After extraction, the tea polyphenols, theanine, etc. The effect of active ingredients is small. Before and after ext...

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Abstract

The invention relates to a disposable tea processing technology. The disposable tea processing technology comprises the following steps: removing impurities from tea, degrading pesticide residue by ozone-microwaves, removing harmful heavy metals by supercritical carbon dioxide extraction, sterilizing at the low temperature and high pressure and automatically packaging. The disposable tea processing technology can be used for removing the impurities from the tea by adopting an impurity-removing process, degrading the pesticide residue in the tea by the ozone-microwaves, simultaneously improving the tea aroma, removing the harmful heavy metals in the tea by the supercritical carbon dioxide extraction, and killing harmful microorganisms in the tea by adopting a low-temperature high-pressure sterilizing process, so that the quality, cleanness and safety of green tea can be improved, and further the real disposable tea can be achieved.

Description

technical field [0001] The invention relates to a processing technology of tea, in particular to a processing technology of no-wash tea. Background technique [0002] "Washing tea" began in the Northern Song Dynasty and followed the drinking method of making tea for about 700 years. When brewing oolong tea in Guangdong, Fujian, and Taiwan, it is customary to pour out the first brewed tea, which is called "washing tea". During the brewing process of black tea. There are several reasons for washing tea: one is that the tea is not clean, the other is that there are pesticide residues on the tea; the third is that there are harmful heavy metals in the tea; And the taste is the best. According to the experiment, the first brewed tea leaves are poured after brewing for three seconds, and the tea polyphenols, amino acids, vitamins and other effective substances and aroma substances in the tea soup are poured out, which is a loss. Most of the existing tea processing methods are ...

Claims

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Application Information

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IPC IPC(8): A23F3/06A23L1/015A23L5/20
Inventor 李晓军贾磊张维韩坤王斌金勇
Owner HANGZHOU EFUTON TEA
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