Manufacturing method for vaccinium bracteatum leaf tea

A technology of black rice leaves and leaf bags, which is applied in the field of preparation of blood pressure lowering black rice leaf tea, to achieve the effect of light yellowish green color, sweet aftertaste, and mellow taste

Inactive Publication Date: 2015-11-25
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these developments are still in the preliminary processing stage

Method used

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  • Manufacturing method for vaccinium bracteatum leaf tea

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Effect test

Embodiment 1

[0024] (1) Clean up after removing the stalk of fresh black rice leaves, after beating, be made into a suspension of 5% (w / v, g / L) with distilled water, place in the 40kHz ultrasonic washing tank, the water bath temperature is set to 40°C, when the temperature of the water bath reaches the set temperature, at natural pH, add neutral protease (alias serrapeptase, also known as serrapeptase. The English name is: dispase, or neutralproteinase, produced by Bacillus subtilis through deep Extracted after fermentation, it belongs to a kind of endonuclease), stir evenly and turn on the ultrasonic wave, the ultrasonic power is 90W, ultrasonic assisted enzymolysis for 30 minutes and then centrifuged, the enzymatic hydrolyzate is concentrated, freeze-dried, and the enzymatic hydrolysis of the leaf protein of black rice leaf is obtained product, spare

[0025] (2) Remove the stalks from fresh black rice leaves, cool them at room temperature for 5 hours, cut them into 1cm-wide strips, boil...

Embodiment 2

[0028] (1) Clean up after removing the stalk of fresh black rice leaves, after beating, be made into the suspension of 7.5% (w / v, g / L) with distilled water, place in the 40kHz ultrasonic washing tank, the water bath temperature is set to 45°C, when the temperature of the water bath reaches the set temperature, under the natural pH, add neutral protease according to the enzyme amount of 3000U / g, stir evenly and turn on the ultrasonic wave, the ultrasonic power is 105W, ultrasonic assisted enzymatic hydrolysis for 40 minutes, centrifugation, enzymatic hydrolysis After the product is concentrated, it is freeze-dried to obtain the enzymatic hydrolyzate of the leaf proteolytic product of the black rice tree, which is ready for use;

[0029] (2) Remove the stalks from fresh black rice leaves, spread them in the air at room temperature for 6 hours, cut them into 2cm-wide strips, boil them for 75 seconds, dry them in the shade at room temperature (11 hours), dry them at 55°C, and crush...

Embodiment 3

[0032] (1) Clean up after removing the stalk of fresh black rice leaves, after beating, be made into a suspension of 10% (w / v, g / L) with distilled water, place in the 40kHz ultrasonic washing tank, the water bath temperature is set to 50°C, when the temperature of the water bath reaches the set temperature, at natural pH, add neutral protease according to the enzyme amount of 3500U / g, stir evenly and turn on the ultrasonic wave, the ultrasonic power is 120W, ultrasonic assisted enzymatic hydrolysis for 50 minutes, centrifugation, enzymatic hydrolysis After the product is concentrated, it is freeze-dried to obtain the enzymatic hydrolyzate of the leaf proteolytic product of the black rice tree, which is ready for use;

[0033] (2) Remove the stalks from fresh black rice leaves, cool them at room temperature for 7 hours, cut them into 3cm wide strips, boil them for 90 seconds, dry them in the shade at room temperature (12 hours), dry them at 60°C, and crush them to get black rice...

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Abstract

The invention relates to a manufacturing method for vaccinium bracteatum leaf tea. The method comprises the following steps that 1, stalks of fresh vaccinium bracteatum leaves are removed, and the vaccinium bracteatum leaves are cleaned thoroughly and pulped, distilled water is used for forming a suspension, the suspension is heated, ultrasonic enzymolysis is performed after neutral protease is added to obtain a vaccinium bracteatum leaf proteolysis product; 2, stalks of fresh vaccinium bracteatum leaves are removed, the vaccinium bracteatum leaves are spread to be dried at room temperature and cut into strips, boiling and de-enzyming are performed, then, the vaccinium bracteatum leaves are dried in the shade, baked and smashed to obtain vaccinium bracteatum leaf tea powder; 3, the vaccinium bracteatum leaf proteolysis product and the vaccinium bracteatum leaf tea powder are mixed, packaged and sterilized to obtain a vaccinium bracteatum leaf tea bag product with the anti-hypertensive effect. The technology is simple, operation is convenient, scale production is easy, the obtained product meets the requirement for functional food, and the brewed tea water is light yellow and pan-green, fragrant and heavy in flavor, mellow in taste and sweet in aftertaste and has the anti-hypertensive effect.

Description

technical field [0001] The invention belongs to the field of food industry, and in particular relates to a method for preparing blood pressure-lowering black rice leaf tea. Background technique [0002] Black rice tree (Vaccinium Bracteratum Thunb.), also known as southern candle, black rice grass, is widely distributed in central and southern China. Along with people's research on the leaves of black rice, it is gradually found that the leaves of black rice are rich in nutrients and bioactive components: the main active ingredients in the leaves of black rice are flavonoids and flavonoid glycosides, alkaloids, polysaccharides, sterols and Amino acids, etc., have the effects of anti-tumor, lowering blood pressure, lowering blood fat, lowering blood sugar and anti-aging. However, the content and activity of flavonoids with antihypertensive effect are relatively low. [0003] The traditional way of eating the black rice tree is to pick the young leaves, dye the glutinous ric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23F3/34
Inventor 唐旭东沈中元徐莉何爱华
Owner JIANGSU UNIV OF SCI & TECH
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