CN102228101B - Method for preparing selenium-enriched healthy tea with high tea polyphenol and theanine - Google Patents
Method for preparing selenium-enriched healthy tea with high tea polyphenol and theanine Download PDFInfo
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Abstract
The invention relates to a method for preparing selenium-enriched healthy tea with high tea polyphenol and theanine. The method comprises the following steps: dissolving tea polyphenol, theanine and polysaccharide selenate in water at 80-100 DEG C to prepare a solution; dipping the raw tea in the prepared solution to obtain the functional crude tea product; and dehydrating, rolling and vacuum-drying the functional crude tea product to obtain the functional finished tea product or dehydrating and vacuum-drying the functional crude tea product to obtain the functional finished dry tea product. The method has the following beneficial effects: the content of tea polyphenol in the tea can be increased by nearly 90-130%, the content of theanine can be increased by 50-150%, the content of polysaccharide selenate (namely organic selenium) can be increased by 70-200%, the weight percentage of caffeine in the functional tea can be reduced below 0.5% and the functional tea still has the style of the traditional fixation tea.
Description
Technical field
The present invention relates to a kind of field of deep tea processing technology, the preparation method of especially a kind of high Tea Polyphenols, high theanine, selenium-enriched health care tea.
Background technology
Tea Polyphenols accounts for 15%～35% of tealeaves dry; It is one of Main Ingredients and Appearance that has in the tealeaves health care; Have excellent antioxidant activity and the significant free radical ability of removing; At aspects such as anticancer, reducing blood lipid, angiocardiopathy preventings remarkable efficacy is arranged, also have detoxifcation and radiation resistance, can stop radioactive substance to invade marrow effectively.It also is one of Main Ingredients and Appearance that forms the tealeaves color, smell and taste.
Theanine is a distinctive free amino acid in the tealeaves, accounts for 1%～2% of tealeaves dry, is the sweet Main Ingredients and Appearance of profit that promotes the production of body fluid in the tealeaves, and the coefficient correlation of it and green tea grade is about 0.8.Theanine has the excitement that suppresses caffeine and cause, nervous, the functions such as the delayed motion type tired, raising memory, control senile dementia of releiving.
Caffeine in the tealeaves accounts for 2%～5% of its dry, and human body is had many physiological regulatory actions, like stimulating central nervous system, stimulate circulation, quicken heartbeat, relaxing smooth muscle, promotion gastrointestinal secretion, strengthen hepatic metabolism function etc.But excessive absorption caffeine has adverse effect to some responsive crowds' health; Be prone to bring out ADD, cause cardiovascular and cerebrovascular diseases people's cerebral thrombus or miocardial infarction, make pregnant woman's gestosis; Cause the neonate disabled; Cause that the climacteric women heartbeat is overrun, insomnia, paramenia etc., cause middle-aged and old calcium deficiency to make osteoporosis, even fracture.Therefore in order to satisfy the responsive crowd's of caffeine demand, the low caffeine tealeaves of research and development preparation has good market prospects, and is significant.
Selenium is the trace element of needed by human; It is as the activated centre of glutathione peroxidase, peroxide that produces when having the scavenger-cell respiratory metabolism and hydroxy radical, keep biomembranous integrality, the protection cell is avoided effects such as oxidisability low-density ester gp damage.Discover that inflammation, chemical carcinogenesis, aging course, oncogene expression, atherosclerotic, radiocarcinogenesis etc. all might be relevant with the insufficiency of intake of selenium.Selenium is decided to be the third-largest micronutrient health care element that 21 century must mend by the World Health Organization and Chinese Medical Association behind iodine, zinc.Except that the rich selenium of Yunnan, Shaanxi and Hubei minority area, approximately the area in the whole nation 3/4ths belongs to and lacks selenium or slightly scarce selenium area in China mainland.Organic selenium tonic product has superiority on toxicological security, physiologically active, research and develop safe and effective rich selenium tea and can alleviate and lack selenium district resident and mend the selenium problem, and this not only helps fitness-for-all, and enterprise also will obtain remarkable economic efficiency simultaneously.
In the present tea product market, product is variation day by day, and the shared market shares of tealeaves deep processed product such as instant tea powder, Tea Polyphenols and tea beverage increase gradually, but the solid type tealeaves of tradition still is person's the first-selection of much not drinking tea because of distinctive cultural deposits and taste flavor.Now, natural tea polyphenol, theanine can prepare production in a large number from tealeaves, and the tame associated production in the whole nation existing about 100 enterprise therefore can obtain them very easily, and price is lower.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the prior art, provide a kind of and increase the content of main function composition Tea Polyphenols, theanine, organic selenium in the tealeaves, selectively reduce the preparation method of the functional tea of its caffeine content.
According to technical scheme provided by the invention, the preparation method of a kind of high Tea Polyphenols, high theanine, selenium-enriched health care tea comprises following preparation process:
(1) solution preparation
Tea Polyphenols, theanine and k-selenocarrageenan be dissolved in 80～100 ℃ the water and be mixed with mixed solution; In solution; The bulking value concentration of Tea Polyphenols is 150～300mg/mL; The bulking value concentration of theanine is 5～25mg/mL, and the bulking value concentration of k-selenocarrageenan is 0.02～0.05 μ g/mL;
(2) impregnation process
Tea raw material is put into the mixed solution impregnation process that step a prepares, and when impregnation process, dipping temperature is 80 ℃～100 ℃; The impregnation process time is 2～10min;
(3) dewatered drying is refining
Tealeaves after the lixiviate is taken out centrifugal or drains dehydration, and oven dry obtains the high theanine selenium-enriched health care of the high Tea Polyphenols of the low caffeine tea of moisture content≤7% under 50～60 ℃ temperature.
Described tea raw material is fresh tea passes or stem tea; (be suitable for the fresh tea passes (abbreviation fresh tea) of tea raw material for being fit to system green tea and suitably having withered and handled, or commodity green tea (being called for short dried tea).
When raw material is fresh tea passes in the said step (2), with the mass volume ratio of mixed solution 1: 4～1: 10; When raw material is stem tea, with the mass volume ratio of mixed solution 1: 10～1: 20.
When tea raw material is fresh tea passes in the said step (3), after the dehydration, knead, dry the high theanine selenium-enriched health care of the high Tea Polyphenols of the low caffeine tea that makes tealeaves moisture≤7%.
When tea raw material is stem tea in the said step (3), the dehydration back-0.08Mpa～-0.1Mpa vacuum under, oven dry below 60 ℃ makes the high theanine selenium-enriched health care of the high Tea Polyphenols of the low caffeine tea of tealeaves moisture≤7%.
Method of the present invention can make that polyphenol content can increase nearly 70%～180% in the tealeaves; The content of theanine can increase by 40%～180%; The content of k-selenocarrageenan (being organic selenium) can increase by 60%～200%, and the caffeine weight percentage in the functional tea can be reduced to below 0.5%, and functional tea still has the style of the solid type tea of tradition; In the preparation process, do not use any organic solvent, guaranteed the safety that becomes to sample tea.And device therefor of the present invention is simple, investment is little, easy to operate, applied widely.
The specific embodiment
Below in conjunction with specific embodiment the present invention is described further.
Embodiment 1
A, with the Tea Polyphenols (weight percentage of caffeine≤0.5%; The purity of Tea Polyphenols>=98%) is total to 1500g, the theanine (weight percentage of caffeine≤0.5%; The purity of theanine>=28%) altogether 100g and the common 0.0003g of k-selenocarrageenan (selenium>=1%) are dissolved in 85 ℃ the water and are mixed with 10L solution; In solution, containing theanine and the bulking value concentration that Tea Polyphenols that bulking value concentration is 150mg/mL and bulking value concentration is 10mg/mL is the k-selenocarrageenan of 0.03 μ g/mL;
B, 1Kg fresh tea passes raw material is put into the solution impregnation process that 5L step a prepares, the impregnation process time is 6min, obtains functional tea bullion;
C, with functional tea bullion through dewater, knead ,-0.08～-vacuum of 0.1Mpa under, under 50～60 ℃ the temperature oven dry obtain moisture content≤7% the high theanine selenium-enriched health care of the high Tea Polyphenols of low caffeine tea.Through detecting, the weight percentage of caffeine is 0.45% in this functional dried tea finished product, and the weight percentage of Tea Polyphenols is 38.87%, and the weight percentage of theanine is 1.49%, and k-selenocarrageenan contains 0.306 μ g in the functional dried tea finished product of every 1g.
Fresh tea passes that will be identical with step b obtains the dried green tea A of finished product after routine is kneaded, dried; Through detecting; The weight percentage of caffeine is 2.94% among the dried green tea A of this finished product; The weight percentage of Tea Polyphenols is 18.75%, and the weight percentage of theanine is 1.02%, and k-selenocarrageenan contains 0.186 μ g in every 1g green tea finished product.
Among this embodiment: functional dried tea is compared with the dried green tea A of finished product, and the content of Tea Polyphenols has increased by 107%, and the content of theanine has increased by 46%, and the content of k-selenocarrageenan has increased by 64%.
Embodiment 2
A, with the Tea Polyphenols (weight percentage of caffeine≤0.5%; The purity of Tea Polyphenols>=98%) is total to 2000g, the theanine (weight percentage of caffeine≤0.5%; The purity of theanine>=28%) altogether 150g and the common 0.0004g of k-selenocarrageenan (selenium>=1%) are dissolved in 90 ℃ the water and are mixed with 10L solution; In solution, containing theanine and the bulking value concentration that Tea Polyphenols that bulking value concentration is 200mg/mL and bulking value concentration is 15mg/mL is the k-selenocarrageenan of 0.04 μ g/mL;
B, 1Kg fresh tea passes raw material is put into the solution impregnation process that 8L step a prepares, the impregnation process time is 5min, obtains functional tea bullion;
C, with functional tea bullion through dewater, knead ,-0.08～-vacuum of 0.1Mpa under, under 50～60 ℃ the temperature oven dry obtain moisture content≤7% the high theanine selenium-enriched health care of the high Tea Polyphenols of low caffeine tea.Through detecting, the weight percentage of caffeine is 0.38% in this functional dried tea finished product, and the weight percentage of Tea Polyphenols is 47.32%, and the weight percentage of theanine is 2.02%, and k-selenocarrageenan contains 0.395 μ g in the functional dried tea finished product of every 1g.
Fresh tea passes that will be identical with step b obtains the dried green tea B of finished product after routine is kneaded, dried; Through detecting; The weight percentage of caffeine is 2.94% among the dried green tea B of this finished product; The weight percentage of Tea Polyphenols is 18.75%, and the weight percentage of theanine is 1.02%, and k-selenocarrageenan contains 0.186 μ g in every 1g green tea finished product.
Among this embodiment: functional dried tea is compared with the dried green tea B of finished product, and the content of Tea Polyphenols has increased by 152%, and the content of theanine has increased by 98%, and the content of k-selenocarrageenan has increased by 112%.
Embodiment 3
A, with the Tea Polyphenols (weight percentage of caffeine≤0.5%; The purity of Tea Polyphenols>=98%) is total to 2500g, the theanine (weight percentage of caffeine≤0.5%; The purity of theanine>=28%) altogether 200g and the common 0.0005g of k-selenocarrageenan (selenium>=1%) are dissolved in 90 ℃ the water and are mixed with 10L solution; In solution, containing theanine and the bulking value concentration that Tea Polyphenols that bulking value concentration is 250mg/mL and bulking value concentration is 20mg/mL is the k-selenocarrageenan of 0.05 μ g/mL;
B, 1Kg fresh tea passes raw material is put into the solution impregnation process that 10L step a prepares, the impregnation process time is 3min, obtains functional tea bullion;
C, with functional tea bullion through dewater, knead ,-0.08～-vacuum of 0.1Mpa under, under 50～60 ℃ the temperature oven dry obtain moisture content≤7% the high theanine selenium-enriched health care of the high Tea Polyphenols of low caffeine tea.Through detecting, the weight percentage of caffeine is 0.33% in this functional dried tea finished product, and the weight percentage of Tea Polyphenols is 51.32%, and the weight percentage of theanine is 2.82%, and k-selenocarrageenan contains 0.465 μ g in the functional dried tea finished product of every 1g.
Fresh tea passes that will be identical with step b obtains the dried green tea C of finished product after routine is kneaded, dried; Through detecting; The weight percentage of caffeine is 2.94% among the dried green tea C of this finished product; The weight percentage of Tea Polyphenols is 18.75%, and the weight percentage of theanine is 1.02%, and k-selenocarrageenan contains 0.186 μ g in every 1g green tea finished product.
Among this embodiment: functional dried tea is compared with the dried green tea C of finished product, and the content of Tea Polyphenols has increased by 174%, and the content of theanine has increased by 176%, and the content of k-selenocarrageenan has increased by 150%.
Embodiment 4
A, with the Tea Polyphenols (weight percentage of caffeine≤0.5%; The purity of Tea Polyphenols>=98%) is total to 2000g, the theanine (weight percentage of caffeine≤0.5%; The purity of theanine>=28%) altogether 150g and the common 0.0002g of k-selenocarrageenan (selenium>=1%) are dissolved in 90 ℃ the water and are mixed with 10L solution; In solution, containing theanine and the bulking value concentration that Tea Polyphenols that bulking value concentration is 200mg/mL and bulking value concentration is 15mg/mL is the k-selenocarrageenan of 0.02 μ g/mL;
B, the dried green tea raw material of 0.5Kg finished product is put into the solution impregnation process that 5L step a prepares, the impregnation process time is 10min, obtains functional tea bullion;
C, with functional tea bullion through dewater, knead ,-0.08～-vacuum of 0.1Mpa under, under 50～60 ℃ the temperature oven dry obtain moisture content≤7% the high theanine selenium-enriched health care of the high Tea Polyphenols of low caffeine tea.Through detecting, the weight percentage of caffeine is 0.49% in this functional dried tea finished product, and the weight percentage of Tea Polyphenols is 41.76%, and the weight percentage of theanine is 1.81%, and k-selenocarrageenan contains 0.367 μ g in the functional dried tea finished product of every 1g.
The dried green tea D of identical finished product that will use with step b; Through detecting; The weight percentage of caffeine is 3.83% among the dried green tea D of this finished product; The weight percentage of Tea Polyphenols is 23.53%, and the weight percentage of theanine is 1.27%, and k-selenocarrageenan contains 0.197 μ g in every 1g green tea finished product.
Among this embodiment: functional dried tea is compared with the dried green tea D of finished product, and the content of Tea Polyphenols has increased by 77%, and the content of theanine has increased by 42%, and the content of k-selenocarrageenan has increased by 86%.
Embodiment 5
A, with the Tea Polyphenols (weight percentage of caffeine≤0.5%; The purity of Tea Polyphenols>=98%) is total to 2500g, the theanine (weight percentage of caffeine≤0.5%; The purity of theanine>=28%) altogether 150g and the common 0.0003g of k-selenocarrageenan (selenium>=1%) are dissolved in 90 ℃ the water and are mixed with 10L solution; In solution, containing theanine and the bulking value concentration that Tea Polyphenols that bulking value concentration is 200mg/mL and bulking value concentration is 15mg/mL is the k-selenocarrageenan of 0.03 μ g/mL;
B, the dried green tea raw material of 0.5Kg finished product is put into the solution impregnation process that 8L step a prepares, the impregnation process time is 7min, obtains functional tea bullion;
C, with functional tea bullion through dewater, knead ,-0.08～-vacuum of 0.1Mpa under, under 50～60 ℃ the temperature oven dry obtain moisture content≤7% the high theanine selenium-enriched health care of the high Tea Polyphenols of low caffeine tea.Through detecting, the weight percentage of caffeine is 0.38% in this functional dried tea finished product, and the weight percentage of Tea Polyphenols is 46.76%, and the weight percentage of theanine is 2.91%, and k-selenocarrageenan contains 0.497 μ g in the functional dried tea finished product of every 1g.
The dried green tea E of identical finished product that will use with step b; Through detecting; The weight percentage of caffeine is 3.83% among the dried green tea C of this finished product; The weight percentage of Tea Polyphenols is 23.53%, and the weight percentage of theanine is 1.27%, and k-selenocarrageenan contains 0.197 μ g in every 1g green tea finished product.
Among this embodiment: functional dried tea is compared with the dried green tea E of finished product, and the content of Tea Polyphenols has increased by 99%, and the content of theanine has increased by 129%, and the content of k-selenocarrageenan has increased by 152%.
Embodiment 6
A, with the Tea Polyphenols (weight percentage of caffeine≤0.5%; The purity of Tea Polyphenols>=98%) is total to 3000g, the theanine (weight percentage of caffeine≤0.5%; The purity of theanine>=28%) altogether 200g and the common 0.0004g of k-selenocarrageenan (selenium>=1%) are dissolved in 100 ℃ the water and are mixed with 10L solution; In solution, containing theanine and the bulking value concentration that Tea Polyphenols that bulking value concentration is 300mg/mL and bulking value concentration is 20mg/mL is the k-selenocarrageenan of 0.04 μ g/mL;
B, the dried green tea raw material of 0.5Kg finished product is put into the solution impregnation process that 10L step a prepares, the impregnation process time is 4min, obtains functional tea bullion;
C, with functional tea bullion through dewater, knead ,-0.08～-vacuum of 0.1Mpa under, under 50～60 ℃ the temperature oven dry obtain moisture content≤7% the high theanine selenium-enriched health care of the high Tea Polyphenols of low caffeine tea.Through detecting, the weight percentage of caffeine is 0.42% in this functional dried tea finished product, and the weight percentage of Tea Polyphenols is 51.76%, and the weight percentage of theanine is 3.31, and k-selenocarrageenan contains 0.597 μ g in the functional dried tea finished product of every 1g.
The dried green tea F of identical finished product that will use with step b; Through detecting; The weight percentage of caffeine is 3.83% among the dried green tea C of this finished product; The weight percentage of Tea Polyphenols is 23.53%, and the weight percentage of theanine is 1.27%, and k-selenocarrageenan contains 0.197 μ g in every 1g green tea finished product.
Among this embodiment: functional dried tea is compared with the dried green tea F of finished product, and the content of Tea Polyphenols has increased by 120%, and the content of theanine has increased by 160%, and the content of k-selenocarrageenan has increased by 203%.
Solution after the impregnation process can reuse, and when the content of caffeine in the solution of extracted tea raw material≤3mg/mL, can directly reuse the health protection tea that makes low caffeine.When caffeine content in the solution >=3mg/mL, gained becomes the tea caffeine content effectively not reduce, and can prepare the functional tea of normal coffee alkali content; Perhaps this solution can recycle the functional tea that uses the low caffeine of preparation after removing caffeine.
Claims (5)
1. the preparation method of a high Tea Polyphenols, high theanine, selenium-enriched health care tea is characterized in that: comprise the steps:
(1) solution preparation
Tea Polyphenols, theanine and k-selenocarrageenan be dissolved in 80～100 ℃ the water and be mixed with mixed solution; In solution; The bulking value concentration of Tea Polyphenols is 150～300mg/mL; The bulking value concentration of theanine is 5～25mg/mL, and the bulking value concentration of k-selenocarrageenan is 0.02～0.05 μ g/mL;
(2) impregnation process
Tea raw material is put into the mixed solution impregnation process that step a prepares, and when impregnation process, dipping temperature is 80 ℃～100 ℃; The impregnation process time is 2～10min;
(3) dewatered drying is refining
Tealeaves after the lixiviate is taken out centrifugal or drains dehydration, and oven dry obtains the high theanine selenium-enriched health care of the high Tea Polyphenols tea of moisture content≤7% under 50～60 ℃ temperature.
2. the preparation method of high Tea Polyphenols as claimed in claim 1, high theanine, selenium-enriched health care tea is characterized in that: described tea raw material is fresh tea passes or stem tea.
3. the preparation method of high Tea Polyphenols as claimed in claim 1, high theanine, selenium-enriched health care tea is characterized in that: when raw material is fresh tea passes in the said step (2), with the mass volume ratio of mixed solution 1: 4～1: 10; When raw material is stem tea, with the mass volume ratio of mixed solution 1: 10～1: 20.
4. the preparation method of high Tea Polyphenols as claimed in claim 1, high theanine, selenium-enriched health care tea; It is characterized in that: when tea raw material is fresh tea passes in the said step (3); After the dehydration, knead, dry the high theanine selenium-enriched health care of the high Tea Polyphenols tea that makes tealeaves moisture≤7%.
5. the preparation method of high Tea Polyphenols as claimed in claim 1, high theanine, selenium-enriched health care tea; It is characterized in that: when tea raw material is stem tea in the said step (3), the dehydration back-0.08Mpa～-0.1Mpa vacuum under, oven dry below 60 ℃ makes the high theanine selenium-enriched health care of the high Tea Polyphenols tea of tealeaves moisture≤7%.
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| CN103181430A (en) * | 2011-12-31 | 2013-07-03 | 新昌县冠阳技术开发有限公司 | Fresh-keeping tea containing ester catechins-tea flavones, and manufacturing method thereof |
| CN102771614A (en) * | 2012-08-10 | 2012-11-14 | 福建农林大学 | Processing technology of black tea with low caffeine |
| CN103348812B (en) * | 2013-08-03 | 2015-07-08 | 管天球 | Tea polyphenol healthy tea oil and preparation method thereof |
| CN105875914A (en) * | 2014-12-29 | 2016-08-24 | 福建富源茶业有限公司 | Production method of Tieguanyin tea leaves high in amino acid content |
| CN105010655A (en) * | 2015-03-20 | 2015-11-04 | 王贞良 | Making method of herb tea |
| CN107114508A (en) * | 2017-05-08 | 2017-09-01 | 横县南方茶厂 | A kind of organic Se-rich probiotics black tea and its preparation |
| CN107624937A (en) * | 2017-10-30 | 2018-01-26 | 罗城仫佬族自治县群英种养农民专业合作社 | A kind of preparation method of Mulberry-leaf Tea |
| CN109769989A (en) * | 2019-04-01 | 2019-05-21 | 薛立义 | Donkey-hide gelatin selenium-rich calcium tea and preparation method thereof |
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