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Preparation method of purple sweet potato leaf compound Fu brick tea

A technology for purple sweet potato leaves and Fu brick tea, applied in the direction of tea treatment before extraction, etc., can solve the problems of liquid beverage storage, transportation, lack of efficacy, unfavorable comprehensive development of purple sweet potato functional products, etc. Improve the comprehensive utilization level and the effect of soup color and redness

Pending Publication Date: 2017-10-20
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the products that use purple sweet potato as raw material on the market are mainly beverages, such as purple sweet potato vinegar, purple sweet potato leaf tea beverage, etc. However, the lack or disadvantages of liquid beverages in storage, transportation and efficacy are not conducive to the functionality of purple sweet potato. The comprehensive development of products, but Fuzhuan brick tea with purple sweet potato leaves and black tea as the main raw materials has not been reported yet.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Pick purple sweet potato leaves with glossy leaves and green leaves, put them in a clean dustpan with a thickness of 1cm, and place them in a cool and dry place (temperature and humidity are 26°C and 40% respectively) to air for 2 hours, during which they turn over every 40 minutes 1 time. Then put the purple sweet potato leaves into a slicer and cut them into 2cm strips, place them in a frying machine and stir fry them at 70°C for 5 minutes until the green gas disappears and the leaves lose water to 60%; then use a tea rolling machine to knead for 20 minutes Finally, the pile is carried out. The moisture content of the pile is 60%, and the fermentation time of the pile is 20 hours. Tea, set aside.

[0022] Take 25kg of purple sweet potato leaf black tea and 100kg of Anhua black tea, put them in a tank and mix them evenly. Then take 0.75 kg of the mixed raw materials and place them in a cotton cloth bag, add 50 kg of water, and boil for 25 minutes. After the boiled gl...

Embodiment 2

[0024] Pick purple potato leaves with shiny green leaves, put them in a clean dustpan with a thickness of 1.5cm, and place them in a cool and dry place to air for 2 hours, turning them over every 30 minutes during this period. Put the purple sweet potato leaves into a slicer and cut them into 2mm strips, put them in a frying machine and stir-fry at 70°C for 5 minutes until the green gas disappears and the leaves lose water to 55%; Heap, the water content of the heap is 55%, the fermentation time of the heap is 15 hours, the fermentation environment of the heap: the temperature is 24°C, the relative air humidity is 65%, and finally the purple sweet potato leaf black tea is made by drying in a dryer, which is reserved .

[0025] Take 25kg of purple sweet potato leaf black tea and 100kg of Anhua black tea, put them in a tank and mix them evenly, take 1kg of the mixed raw materials, put them in a cotton cloth bag, add 50kg of water, boil for 30 minutes, and wait for boil The resu...

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PUM

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Abstract

The invention discloses a preparation method of a purple sweet potato leaf compound Fu brick tea. The preparation method comprises plucking purple sweet potato leaves, and conducting spreading and air drying, slicing, deactivation of enzymes, rolling, pile fermentation and drying so as to obtain purple sweet potato leaf dark tea; and blending Anhua dark tea with the purple sweet potato leaf dark tea in proportion, and conducting glaze stewing, glaze blending, pile fermentation, steaming, shaping, fungal fermentation, and drying so as to obtain the Fu brick tea. The method is innovative in that the purple sweet potato leaf dark tea and the Anhua dark tea are subjected to integrated fermentation, and the method adopts or raises the content of nutrient components in the Fu brick tea such as anthocyanidin, microelement of organic selenium, and vitamins. The prepared Fu brick tea is excellent in soup color, heavy in tea aroma, and mellow in mouth feel, and can be preserved for a long time.

Description

technical field [0001] The invention belongs to the field of health food development, and in particular relates to a preparation method of purple sweet potato leaf compound fu brick tea. Background technique [0002] Purple sweet potato (Ipomoea batat Poir.), formerly known as Chuanshan purple, has another name called purple sweet potato, which belongs to the annual herbaceous plant of Convolvulaceae. Purple sweet potato leaves are rich in natural anthocyanins and trace elements such as zinc, iron, copper, manganese, calcium and selenium. Among them, purple potato anthocyanins can not only inhibit acute liver injury caused by carbon tetrachloride and liver fibrosis caused by dimethylnitrosamine, but also improve diabetes and hypertension, and promote the benign state of glucose metabolism and lipid metabolism. Circulation and anti-tumor etc. [0003] Fuzhuan brick tea belongs to the dark tea products of fermented craft tea. Its processing technology is complicated, the pro...

Claims

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Application Information

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IPC IPC(8): A23F3/08A23F3/12
Inventor 王婷钱卫东刘婵婵沈兰芳曾桥
Owner SHAANXI UNIV OF SCI & TECH