CN104174607A - Cleaning method for tea leaves - Google Patents
Cleaning method for tea leaves Download PDFInfo
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- CN104174607A CN104174607A CN201410383425.5A CN201410383425A CN104174607A CN 104174607 A CN104174607 A CN 104174607A CN 201410383425 A CN201410383425 A CN 201410383425A CN 104174607 A CN104174607 A CN 104174607A
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- tealeaves
- cleaning fluid
- barley
- cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
- A23F3/00—Tea; Tea substitutes; Preparations thereof
- A23F3/06—Treating tea before extraction; Preparations produced thereby
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Tea And Coffee (AREA)
Abstract
The invention relates to a cleaning method for tea leaves. The cleaning method comprises the following steps: the tea leaves are precooled; the precooled tea leaves are completely soaked in a barley enzyme cleaning fluid with the temperature kept between 1 DEG C to 5 DEG C and the time of 1-24 h; the soaked tea leaves are laid on a leachable mechanism, and sprayed and cleaned with water for once; the cleaned tea leaves are spin-dried and dried, and conducted with follow-up technology processing. According to the invention, the cleaning method is adopted, so that pesticides left on the tea leaves can be effectively removed, the influence of the cleaning method on the tea leaves is smaller, and the effective constituents of the tea leaves can't be destroyed.
Description
Technical field
The present invention relates to a kind of preparation method of tealeaves, be specially tealeaves cleaning method.
Background technology
On April 11st, 2012, International Environmental Protection organizes Green Peace to issue < < 2012 tealeaves agricultural chemicals survey report > >.Report points out, delivers third party detect discovery through 18 parts of Tea Samples that it is gathered voluntarily, and every kind all to contain at least 3 kinds of agricultural chemicals tea residual, and wherein 12 parts of tealeaves samples detect illegal violated residues of pesticides.
After this great concern that Pesticide Residues in Tea causes.Because agricultural chemicals is fat-soluble, water insoluble, so traditional water cleaning that utilizes is difficult to remove the residual agricultural chemicals of tealeaves.
The method > > that removes pesticide residue from tea mono-kind of Chinese patent CN200910038620.3 < < discloses a kind of method of removing pesticide residue from tea.The method is by adopting Ozone Water or Ozone Water-photocatalysis Combined Treatment to remove remains of pesticide the tealeaves after plucking.Although this method can be removed the agricultural chemicals of tealeaves, tealeaves process is processed, active ingredient in tealeaves, and for example Tea Polyphenols is destroyed.
Summary of the invention
For above-mentioned technical problem, not the invention provides and can destroy the active ingredient in tealeaves, and can effectively remove the tealeaves cleaning method of agricultural chemicals, concrete technical scheme is:
Tealeaves cleaning method, comprises the following steps,
(1) tealeaves precooling
Tealeaves is carried out to precooling, be pre-chilled to 1 ~ 5 ℃;
(2) tealeaves cleans
Tealeaves after precooling is fully immersed in barley enzyme cleaning fluid, and immersion process temperature remains on 1 ~ 5 ℃, soaks 1 ~ 24 hour;
The concentration of enzymatic activity of the barley enzyme in cleaning fluid is 0.13u/ml ~ 0.28u/ml;
(3) dehydration is dried
Tealeaves after immersion is layered on draining equipment and cleans once with clear water spray;
After cleaning, carry out spin-dry;
Tea spreading after drying changes up speed ventilation and dries; Adopt the warm braw of 20 ~ 35 ℃ to dry.
Wherein, the tealeaves precooling that step (1) is described, is preferably and is pre-chilled to 2 ~ 3 ℃.
The immersion process temperature that step (2) is described, preferably remains on 2 ~ 3 ℃, soaks 4 ~ 5 hours.
The concentration of enzymatic activity of the barley enzyme in the cleaning fluid described in step (2) is 0.17u/ml ~ 0.23u/ml.
Can avoid like this destroying active ingredient in tealeaves, and barley enzyme also can play a role the most efficiently.
Wherein, barley enzyme cleaning fluid compound method is:
Choose the blue or green tender leaf of barley, after cleaning and drying, in 1 ~ 2 ℃ of temperature freezing 2 ~ 3 hours;
After freezing, at the temperature of 1 ~ 5 ℃, carry out following operation, pulverize, after pulverizing, the blue or green tender leaf bubble of barley is in citric acid solution brewed 12 ~ 14 hours, and citric acid solution concentration is 10 ~ 12mol/L;
Brewed rear elimination slag, will add talcum powder to stir in filtrate;
At the temperature of 1 ~ 5 ℃, after conciliation concentration of enzymatic activity is 0.13u/ml ~ 0.28u/ml, then reconcile acid-base value to 7.4 with NaOH, make barley enzyme cleaning fluid.
For the better activated barley enzyme of tool that obtains, in citric acid solution, be added with sodium iodoacetate, the concentration of sodium iodoacetate is 3 ~ 5 mol/L;
In barley enzyme cleaning fluid, be also added with vitamin C, cysteine, reductive glutathione, the barley enzyme cleaning fluid of every liter adds 50 ~ 60g vitamin C, 10 ~ 15g cysteine, 50 ~ 75g reductive glutathione.Can strengthen the activity of barley enzyme, improve enzyme reaction efficiency.
Preferred formula is in barley enzyme cleaning fluid, to be also added with vitamin C, cysteine, reductive glutathione, barley enzyme cleaning fluid interpolation 55 ~ 58g vitamin C, 12 ~ 13g cysteine, 60 ~ 65g reductive glutathione of every liter.
Through the tealeaves after cleaning, then carry out the follow-up processing such as bar that complete, manage.
Tealeaves cleaning method provided by the invention, can effectively remove the agricultural chemicals remaining on tealeaves, and the method is less on tealeaves impact, can not destroy the active ingredient of tealeaves.
The specific embodiment
The specific embodiment of the present invention is described in conjunction with the embodiments.
embodiment 1
Tealeaves cleaning method, comprises the following steps:
(1) tealeaves precooling
Tealeaves is carried out to precooling, be pre-chilled to 1 ℃;
(2) tealeaves cleans
Tealeaves after precooling is fully immersed in barley enzyme cleaning fluid, and immersion process temperature remains on 1 ℃, soaks 24 hours;
The concentration of enzymatic activity of the barley enzyme in cleaning fluid is 0.28u/ml;
Barley enzyme cleaning fluid compound method is,
Choose the blue or green tender leaf of barley, after cleaning and drying, in 1 ℃ of temperature freezing 2 hours;
After freezing, at the temperature of 1 ℃, carry out following operation, pulverize, after pulverizing, the blue or green tender leaf bubble of barley is in citric acid solution brewed 14 hours, and citric acid solution concentration is 10mol/L, is also added with sodium iodoacetate in citric acid solution, and the concentration of sodium iodoacetate is 3 mol/L;
Brewed rear elimination slag, will add talcum powder to stir in filtrate;
At the temperature of 1 ~ 5 ℃, conciliation concentration of enzymatic activity is 0.28u/ml;
Be added with vitamin C, cysteine, reductive glutathione, the barley enzyme cleaning fluid of every liter adds 50g vitamin C, 10g cysteine, 50g reductive glutathione again;
With NaOH, reconcile acid-base value to 7.4 again, make barley enzyme cleaning fluid.
(3) dehydration is dried
Tealeaves after immersion is layered on draining equipment and cleans once with clear water spray;
After cleaning, carry out spin-dry;
Tea spreading after drying changes up speed ventilation and dries; Adopt the warm braw of 20 ~ 35 ℃ to dry.
embodiment 2
Tealeaves cleaning method, comprises the following steps:
(1) tealeaves precooling
Tealeaves is carried out to precooling, be pre-chilled to 2 ℃;
(2) tealeaves cleans
Tealeaves after precooling is fully immersed in barley enzyme cleaning fluid, and immersion process temperature remains on 2 ℃, soaks 24 hours;
The concentration of enzymatic activity of the barley enzyme in cleaning fluid is 0.13u/ml;
Barley enzyme cleaning fluid compound method is,
Choose the blue or green tender leaf of barley, after cleaning and drying, in 2 ℃ of temperature freezing 2 hours;
After freezing, at the temperature of 2 ℃, carry out following operation, pulverize, after pulverizing, the blue or green tender leaf bubble of barley is in citric acid solution brewed 12 hours, and citric acid solution concentration is 11mol/L, is also added with sodium iodoacetate in citric acid solution, and the concentration of sodium iodoacetate is 4mol/L;
Brewed rear elimination slag, will add talcum powder to stir in filtrate;
At the temperature of 2 ℃, conciliation concentration of enzymatic activity is 0.13u/ml;
Be added with vitamin C, cysteine, reductive glutathione, the barley enzyme cleaning fluid of every liter adds 55g vitamin C, 13g cysteine, 65g reductive glutathione again;
With NaOH, reconcile acid-base value to 7.4 again, make barley enzyme cleaning fluid.
(3) dehydration is dried
Tealeaves after immersion is layered on draining equipment and cleans once with clear water spray;
After cleaning, carry out spin-dry;
Tea spreading after drying changes up speed ventilation and dries; Adopt the warm braw of 20 ~ 35 ℃ to dry.
embodiment 3
Tealeaves cleaning method, comprises the following steps:
(1) tealeaves precooling
Tealeaves is carried out to precooling, be pre-chilled to 3 ℃;
(2) tealeaves cleans
Tealeaves after precooling is fully immersed in barley enzyme cleaning fluid, and immersion process temperature remains on 3 ℃, soaks 1 hour;
The concentration of enzymatic activity of the barley enzyme in cleaning fluid is 0.20u/ml;
Barley enzyme cleaning fluid compound method is,
Choose the blue or green tender leaf of barley, after cleaning and drying, in 2 ℃ of temperature freezing 3 hours;
After freezing, at the temperature of 3 ℃, carry out following operation, pulverize, after pulverizing, the blue or green tender leaf bubble of barley is in citric acid solution brewed 13 hours, and citric acid solution concentration is 12mol/L, is also added with sodium iodoacetate in citric acid solution, and the concentration of sodium iodoacetate is 4mol/L;
Brewed rear elimination slag, will add talcum powder to stir in filtrate;
At the temperature of 3 ℃, conciliation concentration of enzymatic activity is 0.20u/ml;
Be added with vitamin C, cysteine, reductive glutathione, the barley enzyme cleaning fluid of every liter adds 60g vitamin C, 15g cysteine, 75g reductive glutathione again;
With NaOH, reconcile acid-base value to 7.4 again, make barley enzyme cleaning fluid.
(3) dehydration is dried
Tealeaves after immersion is layered on draining equipment and cleans once with clear water spray;
After cleaning, carry out spin-dry;
Tea spreading after drying changes up speed ventilation and dries; Adopt the warm braw of 20 ~ 35 ℃ to dry.
embodiment 4
Tealeaves cleaning method, comprises the following steps:
(1) tealeaves precooling
Tealeaves is carried out to precooling, be pre-chilled to 4 ℃;
(2) tealeaves cleans
Tealeaves after precooling is fully immersed in barley enzyme cleaning fluid, and immersion process temperature remains on 4 ℃, soaks 10 hours;
The concentration of enzymatic activity of the barley enzyme in cleaning fluid is 0.18u/ml;
Barley enzyme cleaning fluid compound method is,
Choose the blue or green tender leaf of barley, after cleaning and drying, in 2 ℃ of temperature freezing 3 hours;
After freezing, at the temperature of 4 ℃, carry out following operation, pulverize, after pulverizing, the blue or green tender leaf bubble of barley is in citric acid solution brewed 14 hours, and citric acid solution concentration is 10mol/L, is also added with sodium iodoacetate in citric acid solution, and the concentration of sodium iodoacetate is 5 mol/L;
Brewed rear elimination slag, will add talcum powder to stir in filtrate;
At the temperature of 4 ℃, conciliation concentration of enzymatic activity is 0.18u/ml;
Be added with vitamin C, cysteine, reductive glutathione, the barley enzyme cleaning fluid of every liter adds 56g vitamin C, 10g cysteine, 55g reductive glutathione again;
With NaOH, reconcile acid-base value to 7.4 again, make barley enzyme cleaning fluid.
(3) dehydration is dried
Tealeaves after immersion is layered on draining equipment and cleans once with clear water spray;
After cleaning, carry out spin-dry;
Tea spreading after drying changes up speed ventilation and dries; Adopt the warm braw of 20 ~ 35 ℃ to dry.
embodiment 5
Tealeaves cleaning method, comprises the following steps:
(1) tealeaves precooling
Tealeaves is carried out to precooling, be pre-chilled to 5 ℃;
(2) tealeaves cleans
Tealeaves after precooling is fully immersed in barley enzyme cleaning fluid, and immersion process temperature remains on 5 ℃, soaks 5 hours;
The concentration of enzymatic activity of the barley enzyme in cleaning fluid is 0.23u/ml.
Barley enzyme cleaning fluid compound method is,
Choose the blue or green tender leaf of barley, after cleaning and drying, in 2 ℃ of temperature freezing 2 hours;
After freezing, at the temperature of 5 ℃, carry out following operation, pulverize, after pulverizing, the blue or green tender leaf bubble of barley is in citric acid solution brewed 14 hours, and citric acid solution concentration is 11mol/L, is also added with sodium iodoacetate in citric acid solution, and the concentration of sodium iodoacetate is 4mol/L;
Brewed rear elimination slag, will add talcum powder to stir in filtrate;
At the temperature of 5 ℃, conciliation concentration of enzymatic activity is 0.23u/ml;
Be added with vitamin C, cysteine, reductive glutathione, the barley enzyme cleaning fluid of every liter adds 55g vitamin C, 15g cysteine, 70g reductive glutathione again;
With NaOH, reconcile acid-base value to 7.4 again, make barley enzyme cleaning fluid.
(3) dehydration is dried
Tealeaves after immersion is layered on draining equipment and cleans once with clear water spray;
After cleaning, carry out spin-dry;
Tea spreading after drying changes up speed ventilation and dries; Adopt the warm braw of 20 ~ 35 ℃ to dry.
embodiment 6
Tealeaves cleaning method, comprises the following steps:
(1) tealeaves precooling
Tealeaves is carried out to precooling, be pre-chilled to 5 ℃;
(2) tealeaves cleans
Tealeaves after precooling is fully immersed in barley enzyme cleaning fluid, and immersion process temperature remains on 5 ℃, soaks 4 hours;
The concentration of enzymatic activity of the barley enzyme in cleaning fluid is 0.17u/ml.
Barley enzyme cleaning fluid compound method is,
Choose the blue or green tender leaf of barley, after cleaning and drying, in 1 ℃ of temperature freezing 2 hours;
After freezing, at the temperature of 5 ℃, carry out following operation, pulverize, after pulverizing, the blue or green tender leaf bubble of barley is in citric acid solution brewed 14 hours, and citric acid solution concentration is 12mol/L, is also added with sodium iodoacetate in citric acid solution, and the concentration of sodium iodoacetate is 3 mol/L;
Brewed rear elimination slag, will add talcum powder to stir in filtrate;
At the temperature of 1 ~ 5 ℃, conciliation concentration of enzymatic activity is 0.17u/ml;
Be added with vitamin C, cysteine, reductive glutathione, the barley enzyme cleaning fluid of every liter adds 50g vitamin C, 12g cysteine, 58g reductive glutathione again;
With NaOH, reconcile acid-base value to 7.4 again, make barley enzyme cleaning fluid.
(3) dehydration is dried
Tealeaves after immersion is layered on draining equipment and cleans once with clear water spray;
After cleaning, carry out spin-dry;
Tea spreading after drying changes up speed ventilation and dries; Adopt the warm braw of 20 ~ 35 ℃ to dry.
By the made tealeaves obtaining of above embodiment, with gas chromatograph analysis, measure pesticide concentration, mainly test agricultural chemicals malathion, polyphenol content mensuration spectrophotometry, test result is as following table.
| Project | Polyphenol content (% by weight) before cleaning | Polyphenol content (% by weight) after cleaning | Malathion resolution ratio (%) |
| Embodiment 1 | 19.6 | 19.3 | 76 |
| Embodiment 2 | 18.6 | 18.1 | 98 |
| Embodiment 3 | 17.1 | 16.7 | 61 |
| Embodiment 4 | 19.1 | 18.9 | 83 |
| Embodiment 5 | 16.7 | 16.3 | 70 |
| Embodiment 6 | 18.5 | 18.2 | 72 |
Test result demonstration, the tealeaves cleaning method that this method provides, can effectively remove the agricultural chemicals in tealeaves, and the loss of the active ingredient Tea Polyphenols in tealeaves is very little, substantially can keep the active ingredient of tealeaves.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof
.
Claims (8)
1. tealeaves cleaning method, is characterized in that: comprises the following steps,
(1) tealeaves precooling
Tealeaves is carried out to precooling, be pre-chilled to 1 ~ 5 ℃;
(2) tealeaves cleans
Tealeaves after precooling is fully immersed in barley enzyme cleaning fluid, and immersion process temperature remains on 1 ~ 5 ℃, soaks 1 ~ 24 hour;
The concentration of enzymatic activity of the barley enzyme in cleaning fluid is 0.13u/ml ~ 0.28u/ml;
(3) dehydration is dried
Tealeaves after immersion is layered on draining equipment and cleans once with clear water spray;
After cleaning, carry out spin-dry;
Tea spreading after drying changes up speed ventilation and dries; Adopt the warm braw of 20 ~ 35 ℃ to dry.
2. tealeaves cleaning method according to claim 1, is characterized in that:
The tealeaves precooling that step (1) is described, is pre-chilled to 2 ~ 3 ℃.
3. tealeaves cleaning method according to claim 1, is characterized in that:
The described immersion process temperature of step (2) remains on 2 ~ 3 ℃, soaks 4 ~ 5 hours.
4. tealeaves cleaning method according to claim 1, is characterized in that:
The concentration of enzymatic activity of the barley enzyme in the cleaning fluid described in step (2) is 0.17u/ml ~ 0.23u/ml.
5. according to the tealeaves cleaning method described in claim 1 to 4 any one, it is characterized in that:
Described barley enzyme cleaning fluid compound method is:
Choose the blue or green tender leaf of barley, after cleaning and drying, in 1 ~ 2 ℃ of temperature freezing 2 ~ 3 hours;
After freezing, at the temperature of 1 ~ 5 ℃, carry out following operation, pulverize, after pulverizing, the blue or green tender leaf bubble of barley is in citric acid solution brewed 12 ~ 14 hours, and citric acid solution concentration is 10 ~ 12mol/L;
Brewed rear elimination slag, will add talcum powder to stir in filtrate;
At the temperature of 1 ~ 5 ℃, after conciliation concentration of enzymatic activity is 0.13u/ml ~ 0.28u/ml, then reconcile acid-base value to 7.4 with NaOH, make barley enzyme cleaning fluid.
6. tealeaves cleaning method according to claim 5, is characterized in that:
In described citric acid solution, be added with sodium iodoacetate, the concentration of sodium iodoacetate is 3 ~ 5 mol/L.
7. tealeaves cleaning method according to claim 6, is characterized in that:
In described barley enzyme cleaning fluid, be also added with vitamin C, cysteine, reductive glutathione, the barley enzyme cleaning fluid of every liter adds 50 ~ 60g vitamin C, 10 ~ 15g cysteine, 50 ~ 75g reductive glutathione.
8. tealeaves cleaning method according to claim 7, is characterized in that:
In described barley enzyme cleaning fluid, be also added with vitamin C, cysteine, reductive glutathione, the barley enzyme cleaning fluid of every liter adds 55 ~ 58g vitamin C, 12 ~ 13g cysteine, 60 ~ 65g reductive glutathione.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104738234A (en) * | 2015-04-22 | 2015-07-01 | 赣州市武夷源实业有限公司 | Method for producing tea leaves |
| CN105010587A (en) * | 2015-06-10 | 2015-11-04 | 柳州市侗天湖农业生态旅游投资有限责任公司 | Cleaning method of tea leaves |
| CN105410219A (en) * | 2015-12-15 | 2016-03-23 | 常熟市海虞茶叶有限公司 | Tea cleaning method |
| CN106040654A (en) * | 2016-07-20 | 2016-10-26 | 潜山县三新茶叶专业合作社 | High-efficiency lossless tea cleaning method |
| CN107019062A (en) * | 2017-05-17 | 2017-08-08 | 张松波 | The method that tealeaves removes residues of pesticides |
| CN107258946A (en) * | 2017-07-18 | 2017-10-20 | 广西桂平市蒙圩镇柱强种养专业合作社 | A kind of cleaning method of tealeaves efficient lossless |
| CN107671060A (en) * | 2017-11-14 | 2018-02-09 | 惠州市伯拉科技有限公司 | The cleaning method of fresh harvesting tealeaves |
| CN107695013A (en) * | 2017-11-14 | 2018-02-16 | 惠州市伯拉科技有限公司 | The purging system of tealeaves |
| CN108308288A (en) * | 2018-04-02 | 2018-07-24 | 务川自治县鑫隆缘茶业有限责任公司 | A kind of processing method of tealeaves |
| CN113680731A (en) * | 2021-08-31 | 2021-11-23 | 郑东明 | Traditional Chinese medicinal material cleaning machine and cleaning processing method |
| CN115843898A (en) * | 2022-09-26 | 2023-03-28 | 重庆市农业科学院 | Compound with bowel relaxing function and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104738234A (en) * | 2015-04-22 | 2015-07-01 | 赣州市武夷源实业有限公司 | Method for producing tea leaves |
| CN105010587A (en) * | 2015-06-10 | 2015-11-04 | 柳州市侗天湖农业生态旅游投资有限责任公司 | Cleaning method of tea leaves |
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| CN107258946A (en) * | 2017-07-18 | 2017-10-20 | 广西桂平市蒙圩镇柱强种养专业合作社 | A kind of cleaning method of tealeaves efficient lossless |
| CN107671060A (en) * | 2017-11-14 | 2018-02-09 | 惠州市伯拉科技有限公司 | The cleaning method of fresh harvesting tealeaves |
| CN107695013A (en) * | 2017-11-14 | 2018-02-16 | 惠州市伯拉科技有限公司 | The purging system of tealeaves |
| CN108308288A (en) * | 2018-04-02 | 2018-07-24 | 务川自治县鑫隆缘茶业有限责任公司 | A kind of processing method of tealeaves |
| CN113680731A (en) * | 2021-08-31 | 2021-11-23 | 郑东明 | Traditional Chinese medicinal material cleaning machine and cleaning processing method |
| CN113680731B (en) * | 2021-08-31 | 2022-05-27 | 郑东明 | Traditional Chinese medicinal material cleaning machine and cleaning processing method |
| CN115843898A (en) * | 2022-09-26 | 2023-03-28 | 重庆市农业科学院 | Compound with bowel relaxing function and preparation method thereof |
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Application publication date: 20141203 |