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Black tea improving selenium enrichment processing method

A processing method and a selenium-enriched technology, which are applied in the direction of tea processing before extraction, etc.

Active Publication Date: 2016-01-20
HUAZHONG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently no specific literature on the development of selenium-enriched dark tea products from the perspective of processing technology

Method used

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  • Black tea improving selenium enrichment processing method
  • Black tea improving selenium enrichment processing method

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Experimental program
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Embodiment 1

[0024] A processing method for artificially increasing selenium in dark tea, the steps are:

[0025] (1) With one bud and two leaves baked green tea as raw material;

[0026] (2) Take selenium-enriched dry yeast powder (Q / YB.J02.38, selenium content is 0.2%), and prepare selenium-enriched yeast aqueous solution for use (converted selenium concentration is 5mg / ml); accurately weigh selenium-enriched yeast powder After weighting, dissolve in purified water at 25 or 26 or 27 or 28 or 29 or 30°C, and prepare 5 mg / ml yeast liquid.

[0027] (3) Thinly spread the green hair tea on the water sieve with a thickness of 1cm or 2cm. Put the selenium-enriched yeast aqueous solution into the water spray pot, and evenly spray it into the green mao tea;

[0028] (4) the tea leaves after spraying are sealed with a plastic bag and left to stand for a day and night;

[0029] (5) Place the tea leaves in an artificial climate box (RXZ) for stacking fermentation, fermentation conditions: tempera...

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Abstract

The invention discloses a black tea improving selenium enrichment processing method. The steps are as follows: firstly, one-bud two-leaf dried green tea is employed as a raw material; secondly, dry selenium enrichment yeast powder is taken and prepared into a selenium enrichment yeast aqueous solution for standby, namely, selenium enrichment yeast powder is weighed and dissolved in pure water, and a yeast solution is prepared; thirdly, raw green tea is spread on a water sieve, the selenium enrichment yeast solution is loaded into a watering can and is sprayed in the raw green tea uniformly; fourthly, the tea after spraying is sealed by a plastic bag and is allowed to stand; fifthly, the tea is placed in a manual climatic box and is subjected to piling fermentation, the temperature is 43 DEG C-47 DEG C, the humidity is 82%-87% and the fermentation time is 12-15 days; sixthly, after fermentation is finished, the tea is put in a tea drying machine and dried, the temperature and the time are controlled within certain ranges, and a selenium enrichment black tea finished product is obtained. The technology is simple, operation is convenient, and fragrance is lasting. The finished product meets the national selenium enrichment standard, the tea quality is improved and nutrition and health care values of traditional black tea are raised.

Description

technical field [0001] The invention belongs to the technical field of dark tea processing, and more specifically relates to a processing method for improving selenium-enriched dark tea (the method is suitable for developing selenium-enriched dark tea and other post-fermented tea products that meet the national selenium-enriched tea standard). Background technique [0002] Selenium is an essential micronutrient for humans and animals. The Chinese Nutrition Society lists the element trace selenium as the fifteenth nutrient element when revising the types of daily dietary nutrition supply, and stipulates that the daily intake should be 50-250 micrograms. Selenium is called "the king of anti-cancer" by the World Health Organization (Xu Juan, 2003). Studies have shown that selenium deficiency can cause more than 40 kinds of diseases. Tea is a selenium-tolerant plant, and its selenium-enriching ability is stronger than other plants. Selenium-enriched tea has an antioxidant effe...

Claims

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Application Information

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IPC IPC(8): A23F3/06A23F3/08
Inventor 余志李倩殷雨心郝娟陈小虎
Owner HUAZHONG AGRI UNIV
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