CN104286240B - High theaflavin broken black tea and the method for high theaflavin instant black tea powder are prepared simultaneously - Google Patents

High theaflavin broken black tea and the method for high theaflavin instant black tea powder are prepared simultaneously Download PDF

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Publication number
CN104286240B
CN104286240B CN201410561627.4A CN201410561627A CN104286240B CN 104286240 B CN104286240 B CN 104286240B CN 201410561627 A CN201410561627 A CN 201410561627A CN 104286240 B CN104286240 B CN 104286240B
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tea
black tea
theaflavin
broken
leaf
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CN104286240A (en
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何世杰
刘园英
何丽鑫
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ZHEJIANG JINGNING HUIMINGHONG INDUSTRIAL DEVELOPMENT Co Ltd
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ZHEJIANG JINGNING HUIMINGHONG INDUSTRIAL DEVELOPMENT Co Ltd
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Abstract

The present invention relates to the preparation method of black tea product, it is desirable to provide a kind of while preparing high theaflavin broken black tea and the method for high theaflavin instant black tea powder.The present invention comprises the following steps:By tea fresh leaves A and pure water, with mass ratio 1:After 1 is mixed, the mixing tea liquid is broken into homogenate, the homogenate is filtered with 200 eye mesh screens, centrifugal treating is then carried out with 15000~20000 turns/min speed, that is, obtains fresh tea juice;Wherein, tea fresh leaves A is leaflet plant tea, and is the leaf of one bud of tea three, the leaf of one bud of tea four or its combination.The beneficial effects of the invention are as follows:The method being homogenized using fresh leaf fully improves the activity of polyphenol oxidase, the method quick crashing cell membrane of freezing crushing is utilized simultaneously, improve the enzymatic oxidation reaction efficiency between polyphenol oxidase and Tea Polyphenols, the content of theaflavin in the instant black tea not only directly improved, while also considerably increasing the theaflavin content in broken black tea.

Description

High theaflavin broken black tea and the method for high theaflavin instant black tea powder are prepared simultaneously
Technical field
The present invention relates to the preparation method of black tea product, and in particular to a kind of to prepare high theaflavin broken black tea and high tea simultaneously The method of flavine instant black tea powder.
Background technology
Black tea is one of most popular healthy beverage in the whole world.The special of black tea is the essential of its process Full fermentation process, the technique main purpose be by using polyphenol oxidase activity, by the acerbity components in tea fresh leaves, (tea is more Phenol) theaflavin material is oxidative polymerization into, so that it is red gorgeous bright to form black tea, the quality characteristic such as fresh, refreshing, mellow and harmonious.Research shows that tea is yellow Element has the bioactivity more powerful than Tea Polyphenols, including anti-oxidant, anticancer, suppression bacterium, preventing and treating cardiovascular and cerebrovascular disease etc., plus Its upper content in the black tea of normal fermentation is low, and theaflavin prepared by purification is referred to as " soft gold ".Therefore with high content tea The black tea of flavine, and high content black tea instant tea are the new ideas of black tea research and trade.
Currently, by endogenous enzymes, either exogenous enzymes prepare the instant tea or high theaflavin content of high theaflavin The method of black tea, but these methods mostly add non-tealeaves class material, and high theaflavin broken black tea can not be prepared simultaneously With high theaflavin instant black tea powder.
The content of the invention
The technical problem to be solved in the present invention is to overcome deficiency of the prior art there is provided a kind of while preparing high tea Huang The method of plain broken black tea and high theaflavin instant black tea powder.
To solve technical problem, solution of the invention is:
There is provided a kind of while preparing high theaflavin broken black tea and the method for high theaflavin instant black tea powder, including following step Suddenly:
Step (1):By tea fresh leaves A and pure water, with mass ratio 1:After 1 is mixed, the mixing tea liquid is broken into homogenate, The homogenate is filtered with 200 eye mesh screens, is then carried out centrifugal treating with 15000~20000 turns/min speed, that is, is obtained fresh Tea juice;Wherein, tea fresh leaves A is leaflet plant tea, and is the leaf of one bud of tea three, the leaf of one bud of tea four or its combination;
Step (2):Tea fresh leaves B is directly placed into 4 hours of frost in -20 DEG C of freezers, then taken out;Wherein, tea fresh leaves B For large leaf tea, and it is the leaf of one bud of tea one, tea two leaves and a bud or its combination;
Step (3):The tea juice that will be obtained in the tealeaves freezed in step (2) and step (1), with mass ratio 1:5~1:8 After being mixed, logical oxygen stirring fermentation is carried out, fermentation temperature is 30 DEG C~40 DEG C, fermentation time is 10min~30min, ventilation Measure as 10L/min~30L/min;
Step (4):By fermented feed liquid obtained in step (3) with 200~300 mesh sieve net filtrations, filtrate and filter are obtained Slag, filter residue progress CTC is rubbed and cut, then dries, obtains high theaflavin broken black tea;
Step (5):Obtained filtrate in step (4) is carried out after centrifugal treating with 15000~20000 turns/min speed, High theaflavin instant black tea powder is made by being spray-dried or being freeze-dried after supernatant concentration.
In the present invention, the tea fresh leaves are to censure not processed and other any processing the tealeaves from after tea tree, described Screen cloth is double gauze.
Compared with prior art, the beneficial effects of the invention are as follows:
(1) method being homogenized using fresh leaf fully improves the activity of polyphenol oxidase, while utilizing the method for freezing crushing Quick crashing cell membrane, improves the enzymatic oxidation reaction efficiency between polyphenol oxidase and Tea Polyphenols, the speed not only directly improved The content of theaflavin in molten black tea, while also considerably increasing the theaflavin content in broken black tea;
(2) present invention does not add any non-tealeaves material, it is ensured that the security of product;
(3) this method is prepared for the instant black tea powder of high theaflavin, fully profit while high theaflavin broken black tea is prepared With tea resources, greatly reduce the wasting of resources, also shorten the fermentation time of conventional black processing, improve efficiency.
Embodiment
Following embodiment can make the technical staff of this professional skill field more fully understand the present invention, but not to appoint Where formula limitation is of the invention.
Embodiment 1
Step (1):By the leaf of one bud of leaflet kind tea fresh leaves three and pure water, with mass ratio 1:After 1 is mixed, using at a high speed Tea liquid is broken into homogenate by beater, and homogenate is filtered with 200 mesh double gauzes, and with 15000 turns/min speed in centrifuge Centrifugal treating is carried out, fresh tea juice is obtained.
Step (2):The leaf of one bud of large leaf tea fresh leaf one is directly placed into 4 hours of frost, Ran Houqu in -20 DEG C of freezers Go out.
Step (3):The tea juice that will be obtained in the tealeaves freezed in step (2) and step (1), with mass ratio 1:5 are carried out After mixing, logical oxygen stirring fermentation is carried out, fermentation temperature is 30 DEG C, and fermentation time is 10min, and throughput is 10L/min.
Step (4):Fermented feed liquid obtained in step (3) is filtered with 200 mesh double gauzes, filtrate and filter is obtained Slag, filter residue progress CTC is rubbed and cut, then dries, obtains high theaflavin broken black tea.
Step (5):Obtained filtrate in step (4) is carried out after centrifugal treating with centrifuge with 15000 turns/min, will be upper It is spray-dried after clear liquid concentration and high theaflavin instant black tea powder is made.
Analyze and detect through HPLC, the broken black tea theaflavin content obtained in step (4) is to obtain in 1.4%, step (5) Theaflavin content is 3.5% in instant black tea powder.
Embodiment 2
Step (1):By the leaf of one bud of leaflet kind tea fresh leaves three and pure water, with mass ratio 1:After 1 is mixed, using at a high speed Tea liquid is broken into homogenate by beater, and homogenate is filtered with 200 mesh double gauzes, and with 17000 turns/min speed in centrifuge Centrifugal treating is carried out, fresh tea juice is obtained.
Step (2):Large leaf tea fresh leaf two leaves and a bud is directly placed into 4 hours of frost, Ran Houqu in -20 DEG C of freezers Go out.
Step (3):The tea juice that will be obtained in the tealeaves freezed in step (2) and step (1), with mass ratio 1:6 are carried out After mixing, logical oxygen stirring fermentation is carried out, fermentation temperature is 35 DEG C, and fermentation time is 20min, and throughput is 20L/min.
Step (4):Fermented feed liquid obtained in step (3) is filtered with 250 mesh double gauzes, filtrate and filter is obtained Slag, filter residue progress CTC is rubbed and cut, then dries, obtains high theaflavin broken black tea.
Step (5):Obtained filtrate in step (4) is carried out after centrifugal treating with centrifuge with 18000 turns/min, will be upper It is freeze-dried after clear liquid concentration and high theaflavin instant black tea powder is made.
Analyze and detect through HPLC, the broken black tea theaflavin content obtained in step (4) is to obtain in 1.6%, step (5) Theaflavin content is 3.9% in instant black tea powder.
Embodiment 3
Step (1):By the leaf of one bud of leaflet kind tea fresh leaves four and pure water, with mass ratio 1:After 1 is mixed, using at a high speed Tea liquid is broken into homogenate by beater, and homogenate is filtered with 200 mesh double gauzes, and with 20000 turns/min speed in centrifuge Centrifugal treating is carried out, fresh tea juice is obtained.
Step (2):Large leaf tea fresh leaf two leaves and a bud is directly placed into 4 hours of frost, Ran Houqu in -20 DEG C of freezers Go out.
Step (3):The tea juice that will be obtained in the tealeaves freezed in step (2) and step (1), with mass ratio 1:8 are carried out After mixing, logical oxygen stirring fermentation is carried out, fermentation temperature is 40 DEG C, and fermentation time is 30min, and throughput is 30L/min.
Step (4):Fermented feed liquid obtained in step (3) is filtered with 300 mesh double gauzes, filtrate and filter is obtained Slag, filter residue progress CTC is rubbed and cut, then dries, obtains high theaflavin broken black tea.
Step (5):Obtained filtrate in step (4) is carried out after centrifugal treating with centrifuge with 20000 turns/min, will be upper It is spray-dried after clear liquid concentration and high theaflavin instant black tea powder is made.
Analyze and detect through HPLC, the broken black tea theaflavin content obtained in step (4) is to obtain in 1.7%, step (5) Theaflavin content is 4.1% in instant black tea powder.
Embodiment 4
Step (1):By the leaf of one bud of leaflet kind tea fresh leaves four and pure water, with mass ratio 1:After 1 is mixed, using at a high speed Tea liquid is broken into homogenate by beater, and homogenate is filtered with 200 mesh double gauzes, and with 20000 turns/min speed in centrifuge Centrifugal treating is carried out, fresh tea juice is obtained.
Step (2):The leaf of one bud of large leaf tea fresh leaf one is directly placed into 4 hours of frost, Ran Houqu in -20 DEG C of freezers Go out.
Step (3):The tea juice that will be obtained in the tealeaves freezed in step (2) and step (1), with mass ratio 1:8 are carried out After mixing, logical oxygen stirring fermentation is carried out, fermentation temperature is 30 DEG C, and fermentation time is 15min, and throughput is 18L/min.
Step (4):Fermented feed liquid obtained in step (3) is filtered with 200 mesh double gauzes, filtrate and filter is obtained Slag, filter residue progress CTC is rubbed and cut, then dries, obtains high theaflavin broken black tea.
Step (5):Obtained filtrate in step (4) is carried out after centrifugal treating with centrifuge with 20000 turns/min, will be upper It is freeze-dried after clear liquid concentration and high theaflavin instant black tea powder is made.
Analyze and detect through HPLC, the broken black tea theaflavin content obtained in step (4) is to obtain in 1.9%, step (5) Theaflavin content is 3.8% in instant black tea powder.
Therefore, actual range of the invention not only includes the disclosed embodiments, is additionally included under claims real Apply or perform all equivalents of the present invention.

Claims (2)

1. it is a kind of while preparing high theaflavin broken black tea and the method for high theaflavin instant black tea powder, it is characterised in that including such as Lower step:
Step (1):By tea fresh leaves A and pure water, with mass ratio 1:After 1 is mixed, the mixing tea liquid is broken into homogenate, this is even Slurry is filtered with 200 mesh double gauzes, is then carried out centrifugal treating with 20000 turns/min speed, that is, is obtained tea juice;Wherein, Fresh leaf A is the leaflet plant tea of the leaf of one bud of tea four;
Step (2):Tea fresh leaves B is directly placed into 4 hours of frost in -20 DEG C of freezers, then taken out;Wherein, fresh leaf B is tea one The large leaf tea of the leaf of bud two;
Step (3):The tea juice that will be obtained in the tealeaves freezed in step (2) and step (1), with mass ratio 1:8 are mixed Afterwards, logical oxygen stirring fermentation is carried out, fermentation temperature is 40 DEG C, and fermentation time is 30min, and throughput is 30L/min;
Step (4):Fermented feed liquid obtained in step (3) is filtered with 300 mesh double gauzes, filtrate and filter residue is obtained, will Filter residue progress CTC, which is rubbed, to be cut, and is then dried, is obtained high theaflavin broken black tea, and the theaflavin content of the high theaflavin broken black tea is 1.7%;
Step (5):Obtained filtrate in step (4) is carried out after centrifugal treating with 20000 turns/min speed, by supernatant concentration It is spray-dried or is freeze-dried afterwards and high theaflavin instant black tea powder, and the theaflavin content of the high theaflavin instant black tea powder is made For 4.1%.
2. it is according to claim 1 while prepare the method for high theaflavin broken black tea and high theaflavin instant black tea powder, its It is characterised by, the tea fresh leaves are to censure not processed and other any processing the tealeaves from after tea tree.
CN201410561627.4A 2014-10-21 2014-10-21 High theaflavin broken black tea and the method for high theaflavin instant black tea powder are prepared simultaneously Expired - Fee Related CN104286240B (en)

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CN108294309A (en) * 2017-01-13 2018-07-20 上海科宝生物技术有限公司 Black tea extract and preparation method thereof
CN106900926B (en) * 2017-03-09 2019-09-10 华中农业大学 A kind of processing method using summer and autumn fresh tea leaves production green tea powder
CN106954710B (en) * 2017-05-01 2020-05-29 胡安平 High-quality low-temperature instant black tea powder and preparation process thereof
CN112273498A (en) * 2020-11-13 2021-01-29 大闽食品(漳州)有限公司 Processing method of natural purple tea extract

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