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Ginkgo leaf extracting technology and ginkgo black tea processing method

A technology of extraction technology and processing method, which is applied in the field of extraction technology and processing of ginkgo black tea, can solve the problems of great difference in texture, poor product effect, difficulty in popularization, etc., achieve the purpose of inhibiting the increase of abdominal fat, convenient carrying and drinking, Effects against UV radiation

Inactive Publication Date: 2012-08-15
徐州绿之野生物食品有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In the prior art, health teas prepared from a single ginkgo tea or a combination of ginkgo leaves and tea leaves, or a combination of ginkgo leaves and other beneficial raw materials generally ignore the utilization effect of the active ingredients of ginkgo leaves, resulting in poor product effects. It is difficult to achieve the expected effect, which affects the awareness of consumers and is difficult to promote
The reason is that the cell wall and cell membrane of Ginkgo biloba are constantly lignified during the growth period, and the texture of Ginkgo biloba varies greatly due to different picking time. The main components of Ginkgo biloba are ginkgo ketone compounds, lactone compounds, Organic ingredients such as polyisoamyl alcohol and ginkgo polysaccharides, after being made into tea, simply soaked in boiling water, it is difficult to extract their fat-soluble active ingredients, which is the main reason for the unsatisfactory effect after drinking
The 2nd, existing processing technology is unreasonable, only is simple tea-making method, is difficult to reach the medical curative effect of ginkgo leaf, can not realize the medical value of existing ginkgo tea
[0013] As the cardiovascular and cerebrovascular health problems of middle-aged and elderly people are getting more and more attention, improving the health value of ginkgo biloba and combining the excellent characteristics of black tea should be able to better solve the above problems, especially for people with "three highs" People and obesity have more practical application effects, but there is no relevant report in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Ginkgo biloba extraction process:

[0036] (1) Take dried ginkgo leaves and grind them into 450 mesh fine powder; (2) Take 10 kg of ginkgo leaf fine powder and add 200 kg of ethanol with a concentration of 35%, stir and mix evenly, after soaking for 6 hours, heat at 65°C, set the speed at 45rpm , stirred and extracted twice, respectively, the first extraction was 3.5h, the second extraction was 2.5h, the combined extracts were filtered with 350 mesh industrial filter cloth, and the filtrate was centrifuged at 8000r / min for 15min to obtain the supernatant; (3) Take the supernatant and filter it with a 0.22 μm microporous membrane to obtain the fine filtrate; (4) Take the fine filtrate to recover ethanol under reduced pressure, concentrate to 10 g raw and dried ginkgo leaves / ml concentrated juice, and set aside.

Embodiment 2

[0038] (1) Take dried ginkgo leaves and crush them into 550 mesh fine powder; (2) Take 10 kg of ginkgo leaf fine powder and add 300 kg of ethanol with a concentration of 45%, stir and mix evenly, after soaking for 5 hours, heat at 55°C, set the speed at 35rpm, stirred and extracted twice, respectively, the first extraction was 3.5h, the second extraction was 2.5h, the combined extracts were filtered with 350 mesh industrial filter cloth, and the filtrate was centrifuged at 10000r / min for 15min to obtain the supernatant; (3 ) Take the supernatant and filter it with a 0.22 μm microporous membrane to obtain the fine filtrate; (4) Take the fine filtrate to recover ethanol under reduced pressure, concentrate to 10 g raw and dried ginkgo leaves / ml concentrated juice, and set aside.

Embodiment 3

[0040] (1) Take dried ginkgo leaves and crush them into 650-mesh fine powder; (2) Take 10 kg of ginkgo leaf fine powder and add 250 kg of ethanol with a concentration of 55%, stir and mix evenly, soak for 4 hours, heat at 45°C, and set the speed at 25rpm, stirred and extracted twice, respectively, the first extraction was 3.5h, the second extraction was 2.5h, the combined extracts were filtered with 350 mesh industrial filter cloth, and the filtrate was centrifuged at 9000r / min for 15min to obtain the supernatant; (3 ) Take the supernatant and filter it with a 0.22 μm microporous membrane to obtain the fine filtrate; (4) Take the fine filtrate to recover ethanol under reduced pressure, concentrate to 10 g raw and dried ginkgo leaves / ml concentrated juice, and set aside.

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Abstract

The invention discloses a ginkgo leaf extracting technology and a ginkgo black tea processing method. The ginkgo black tea processing method is characterized in that ginkgo leaf is extracted to obtain juice concentrate, and then the juice concentrate and black tea are prepared into ginkgo black tea, wherein the mass ratio of the ginkgo leaf juice concentrate to black tea is 1:20-30. The processing method comprises the following steps of: evenly spraying the ginkgo leaf juice on the black tea in proportion so that the juice is sufficiently and evenly absorbed; carrying out thermostatic drying at the temperature of 55 DEG C+ / -2 DEG C till the water content is less than 5%; and carrying out vacuum package to obtain a ginkgo leaf black tea product. Or the processing method comprises the following steps of: smashing black tea into 10-30-mesh powder; mixing with the ginkgo leaf juice in proportion so that the juice is sufficiently and evenly absorbed; carrying out thermostatic drying at the temperature of 50 DEG C+ / -2 DEG C till the water content is less than 4%; and packing with bagged tea packing paper to obtain a bagged ginkgo black tea product, wherein each bag is 2.5-5.0g. The tea product provided by the invention is high in the content of tea polysaccharide, high in activity and more suitable for the patients who suffer from hyperlipidemia and hyperglycemia, and has more obvious effect of restraining the increase of abdominal fat as compared with other tea products.

Description

technical field [0001] The invention relates to an extraction method of ginkgo leaves and a processing method of ginkgo black tea, in particular to an extraction technology of ginkgo leaves and a processing method of ginkgo black tea. Background technique [0002] The medical and health value of Ginkgo biloba has been revealed by scholars at home and abroad. Ginkgo biloba contains more than 20 kinds of flavonoids, the content of which is greater than 24% in the total extract, mainly including Ginkgodiketone (Cinkgetin), isoflavone (So ginkgetin), bilobetin. Ginkgo biloba also contains terpene lactones. Diterpene lactones mainly include ginkgolides (Ginkgolide) A, B, C, M, J, etc., and sesquiterpene lactones are bilobalide. In addition, it also contains phenols, 25 kinds of beneficial elements, 17 kinds of amino acids, alkaloids and so on. Modern research has the functions of improving cardiovascular and cerebrovascular functions, relieving asthma, dilating coronary arterie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23F3/14
Inventor 张奎昌张志年张琪悦张清悦
Owner 徐州绿之野生物食品有限公司
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