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Instant yellow tea preparation method

An instant, tea concentrate technology, applied in the direction of tea extraction, can solve problems such as lack of raw materials, and achieve the effects of simple process, mellow taste and easy operation

Active Publication Date: 2012-10-10
南京融点食品科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country is a big tea-producing country with a variety of tea varieties, which are generally divided into six major tea categories: green tea, black tea, green tea (oolong tea), white tea, dark tea, and yellow tea. Such as Junshan Yinzhen), there is almost no production of bulk yellow tea, and there is a problem of lack of raw materials to produce instant yellow tea according to the traditional method. Therefore, we explore the use of green tea as raw material to process instant yellow tea. After concentration and sterilization, "transformation" is carried out to produce instant yellow tea with obvious quality characteristics of yellow tea

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Take 200kg of green tea, pulverize it, add 2000kg of deionized water, extract it through a countercurrent extraction device at a temperature of 70°C for 30 minutes, and filter the countercurrent extraction liquid through an 80-mesh filter to obtain a tea extract from which tea dregs have been removed, and cool it down At 45°C, 1,500 liters of Brix tea extract with a solid content of 4.2°C was obtained, then centrifuged and separated by a centrifuge, then passed through a ceramic membrane with a pore size of 0.1 micron, and then concentrated to 22°Brix by a vacuum concentrator, and the concentrated solution was subjected to UHT After the equipment is sterilized at 125°C for 6 seconds, it is cooled to 70°C, poured into a sterile tank, degassed and vacuumed to a vacuum degree of 0.090MPa, then kept at a vacuum degree of 0.072MPa, and transformed at a constant temperature of 68°C for 3 hours. Stir every 0.5 hour for 5 minutes during the transformation process. After the tran...

Embodiment 2

[0034] Take 200kg of crushed green tea, add 4000kg of deionized water, and extract through countercurrent extraction equipment at 80°C for 20 minutes, and filter the countercurrent extraction liquid through a 100-mesh filter to obtain the tea extract with the tea dregs removed, and obtain the solid content 3,400 liters of 2.2°Brix tea extract, filtered through a fine filter membrane with a pore size of 10 microns, then passed through a hollow fiber membrane with a pore size of 0.45 microns, and then concentrated to 20°Brix through a RO membrane, and the concentrated solution was passed through UHT equipment at 135°C , After sterilizing for 3 seconds, cool to 80°C, pour into a sterile tank, degas the vacuum to 0.085MPa first, then keep it at a vacuum of 0.063MPa, transform at a constant temperature of 75°C for 2.5 hours, during the transformation process Stir for 5 minutes every 0.5 hour. After the conversion is finished, put it into a spray dryer and spray dry to obtain 49.3kg ...

Embodiment 3

[0036] Put 200kg of green strip tea into the extraction tank, add 3000kg of pure water, extract at 60°C for 30 minutes, release the tea extract, and obtain 2400 liters of Brix tea extract with a solid content of 3.1°C, and then pass through the pore diameter of Filter through a 10-micron fine filter membrane, then pass through an ultrafiltration membrane with a molecular weight cut-off of 70,000 Daltons, and then concentrate through a RO membrane to 23°Brix. The concentrated solution is sterilized by UHT equipment at 122°C for 5 seconds, and then cooled to 60°C , into a sterile tank, degassed first to a vacuum of 0.092MPa, then kept at a vacuum of 0.084MPa, transformed at a constant temperature of 55°C for 5 hours, stirring for 5 minutes every 0.5 hours during the transformation process, after the transformation , beat in the dish of freeze-drying machine, quick-frozen, carry out freeze-drying again, obtain 42.8kg instant yellow tea powder.

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PUM

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Abstract

The invention discloses an instant yellow tea preparation method, which comprises the steps of picking green tea, adding water for extraction, separating tea residues in tea extract by using a continuous filter, filtering and clarifying liquid part, concentrating, disinfecting, converting and drying to obtain instant yellow tea. Since the green tea is selected as raw materials, the source of the raw materials is rich and the raw materials are easy to obtain. A converting process is a special process which comprises the steps of placing disinfected green tea concentrated solution in an asepticstorage tank, then degassing and finally storing the solution at set temperature for a specific period, so as to facilitate the change of certain components in tea leaves, remove crude green gas, reduce bitter taste and increase sweet and mellow taste; and especially, the converting process can enable the tea soup to become yellow, so as to obtain the characteristic of yellow tea and make the instant yellow tea. The process of the preparation method provided by the invention is simple, easy to operate and suitable for industrial mass production.

Description

technical field [0001] The invention relates to a method for preparing tea, in particular to a method for preparing instant yellow tea. Background technique [0002] Instant tea is generally made by extracting tea leaves with water, filtered or centrifuged, concentrated and dried. It is a solid powder that can quickly dissolve in water, has no tea residue and maintains the unique flavor of tea. It is ready to drink and can also be used as a food and beverage preparation Raw materials. Using conventional processing methods, generally what kind of tea raw materials are used to process instant tea with the same name, such as instant green tea, which is processed by using green tea raw materials. [0003] In the prior art, there are patents on yellow tea processing, but no patents on instant yellow tea processing. my country is a big tea-producing country with a variety of tea varieties, which are generally divided into six major tea categories: green tea, black tea, green tea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23F3/18
Inventor 岳鹏翔邵增琅裴少芬
Owner 南京融点食品科技有限公司
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