CN103300183A - Cool tea concentrated liquid and extraction method thereof - Google Patents
Cool tea concentrated liquid and extraction method thereof Download PDFInfo
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- CN103300183A CN103300183A CN2013102454502A CN201310245450A CN103300183A CN 103300183 A CN103300183 A CN 103300183A CN 2013102454502 A CN2013102454502 A CN 2013102454502A CN 201310245450 A CN201310245450 A CN 201310245450A CN 103300183 A CN103300183 A CN 103300183A
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Abstract
The invention discloses cool tea concentrated liquid and an extraction method thereof, which belong to the technical field of plant ingredient extraction. The extraction method comprises the following steps of: (1) adding an alcohol solution in cool tea materials, and dynamically extracting to obtain an extracted stock solution of cool tea; and (2) adding an edible high-boiling-point solvent into the extracted stock solution of the cool tea, reducing pressure, evaporating, and extracting alcohol till no alcohol is evaporated out, thus obtaining the cool tea concentrated liquid. The cool tea concentrated liquid prepared by the method has the advantages of high concentration of volatile flavor substances, no need of vacuum package, long quality guarantee period, convenience in storage and transportation and the like, and can be widely used in the fields of beverages, essences, baked foods, candies and the like due to the characteristic of high-temperature fragrance retention so as to expand the application field of a cool tea extract.
Description
Technical field
The present invention relates to plant component extractive technique field, particularly relate to a kind of herb tea concentrated solution and extracting method thereof.
Background technology
In recent years, along with developing rapidly of cold tea industry, the local flavor of this uniqueness of cold tea local flavor is also liked by increasing people.Present stage, the cold tea local flavor has been widely used in the various food such as candy, bread, melon seeds.When making the food of these cold tea local flavors, the modes of adding herb tea concentrated solution that adopt more.At present, commercially available herb tea concentrated solution mainly adopts following preparation method to obtain: be to extract solvent with water, adopt lixiviate or adopt membrane separation technique or the vacuum concentration technique to extract concentrate, centrifugal, sterilization packaging forms herb tea concentrated solution.Contain materials such as a large amount of polysaccharide in the herb tea concentrated solution with the method preparation, should not preserve, need vacuum packaging, and when vacuum concentrated the cold tea extract, the volatile materials loss with cold tea peculiar flavour was bigger, and when the making cold tea typical local food in later stage, has the not defective of lasting of high temperature, if add in the solid food, particularly in the bakery product, not only use amount is big, does not also have the effect of flavouring.
Summary of the invention
Based on this, the objective of the invention is to overcome the defective of prior art, a kind of extracting method of herb tea concentrated solution is provided, the herb tea concentrated solution that adopts this method to extract has the concentration advantage high and high temperature lasting in the post-production process of volatile flavor substance.
For achieving the above object, the present invention takes following technical scheme: a kind of extracting method of herb tea concentrated solution may further comprise the steps:
(1) adding weight in the cold tea raw material is cold tea raw material total amount 1-4 70%-90% ethanolic solution doubly, and Dynamic Extraction obtains cold tea and extracts stoste;
(2) extract to above-mentioned cold tea that to add weight in the stoste be cold tea raw material total amount 0.8-1.85 edible high boiling solvent doubly, the boiling point of described edible high boiling solvent is not less than 150 ℃, be 0.08-0.1MPa in vacuum, evaporating temperature is to extract ethanol under 30-44 ℃ the condition, steamed to no longer including ethanol, namely got herb tea concentrated solution.
Extracting method of the present invention, adopting water and ethanol is solvent, utilize the Dynamic Extraction technology to prepare cold tea and extract stoste, only need the solvent of conventional static extraction 10% just can reach extraction effect preferably, and owing to quantity of solvent in this cold tea extraction stoste is less, do not need to concentrate, reduced the loss of volatile flavor substance in concentration process, the concentration of the volatile flavor substance of final products is more than 5 times of conventional extracting method.Can directly add high boiling solvent then, under appropriate vacuum and temperature, the lower ethanol of boiling point that cold tea is extracted in the stoste cements out, keep high boiling solvent, and because this process evaporating temperature is lower, can keep volatile flavor substance, thereby make herb tea concentrated solution high temperature resistant and that volatile flavor substance concentration is high, the solvent in the herb tea concentrated solution is the mixed solvent of water and high boiling solvent at this moment.Because the existence of high boiling solvent is difficult for living bacterium in the herb tea concentrated solution, therefore the herb tea concentrated solution of being made by this method has the vacuum packaging of not needing, long shelf-life, advantages such as convenient storage and transportation.And because the existence of high boiling solvent, this herb tea concentrated solution is in follow-up cold tea typical local food manufacturing process, low boiling compared to ethanol, volatile flavor substance is not easy to lose along with the solvent evaporation because of high temperature, have the still characteristics of lasting of high temperature, not only can be used for field of beverage, also can be used for fields such as essence, bakery product, candy, enlarged the application of cold tea extract.
Therein among some embodiment, described edible high boiling solvent is at least a in propane diols, glycerine and the triethyl citrate.Above-mentioned high boiling solvent can dissolve each other with any ratio with water, and has the characteristics of colorless and odorless, reduces high boiling solvent to greatest extent to the influence of follow-up food processing process and taste.
Among some embodiment, in the step (2), described vacuum is 0.09-0.1MPa therein, and described evaporating temperature is 35-44 ℃.Adopt the above-mentioned parameter condition, ethanol can well be cemented out, and not lose volatile flavor substance.
Among some embodiment, in the step (1), the weight of described ethanolic solution is 2-3 times of cold tea raw material total amount therein, and concentration is 80%～90%.Adopt the above-mentioned parameter condition, can obtain the higher herb tea concentrated solution of volatile flavor substance concentration.
Among some embodiment, in the step (1), the condition of described Dynamic Extraction is 80-90 ℃, 1-4h therein.The temperature and time of Dynamic Extraction adopts conventional temperature and time, can grasp flexibly according to the herb tea compositions kind of extracting is different.As more the selecting for use lower temperature and short period of leaf class medicinal material of easy extraction, the ratio of rhizome medicinal material that is difficult for extraction is more optional with higher temperature and long period, to obtain extraction effect preferably.
Among some embodiment, in the described step (1), also comprise cold tea is extracted the step that stoste is filtered therein.Avoid the dregs of a decoction to enter the following process program, influence the product mouthfeel.The preferred flame filter press that adopts filters cold tea extraction stoste, and it is big to have filter area, the characteristics that flow is big.
Among some embodiment, described step (1) also comprises before with the step in the cleaning of cold tea raw material and the filter cloth bag of packing into therein.Cleaning step meets hygienic requirements in order to ensure this preparation method, and each raw material of cold tea is packed in the filter cloth bag, can reduce cold tea and extract the residual of stoste Chinese medicine slag.
Among some embodiment, described cold tea raw material is the raw material of following weight portion therein:
In the above-mentioned cold tea raw material, each composition acting in conjunction is complemented each other, and makes this herb tea concentrated solution both have clearing heat and detoxicating effect, has mouthfeel preferably again, and is with rich flavor mellow.Can be widely used in the various cold tea typical local food of preparation, it is good to have resistance to elevated temperatures, and technology is simple, and long shelf-life makes things convenient for the advantage of storage and transport.
Among some embodiment, described cold tea raw material is the raw material of following weight portion therein:
The above-mentioned raw materials proportioning can reach better clearing heat and detoxicating effect and better taste.
The present invention also provides a kind of herb tea concentrated solution that obtains according to above-mentioned extracting method.
Compared with prior art, the present invention has following beneficial effect:
Herb tea concentrated solution of the present invention and extracting method thereof, by utilizing the Dynamic Extraction technology, reduced quantity of solvent, the volatile flavor substance loss that has caused when having avoided concentrated, utilize high boiling solvent that lower boiling ethanol is displaced again, therefore the herb tea concentrated solution of being made by this method has volatile flavor substance concentration height, do not need vacuum packaging, long shelf-life, advantages such as convenient storage and transportation, also because it has the high temperature lasting, can be widely used in fields such as beverage, essence, bakery product, candy, enlarge the application of cold tea extract.
And each composition acting in conjunction in the cold tea raw material that the present invention adopts is complemented each other, and makes this herb tea concentrated solution both have clearing heat and detoxicating effect, has mouthfeel preferably again, and is with rich flavor mellow.
The specific embodiment
Below in conjunction with specific embodiment the present invention is done further explanation, but the present invention is not caused any restriction.
Embodiment 1
A kind of herb tea concentrated solution, the raw material of the following weight portion of employing:
The described herb tea concentrated solution of present embodiment adopts following method preparation:
(1) by the said ratio raw materials weighing, load weighted raw material is cleaned up with deionized water, the 200 order filter cloth bags of packing into are then put into the Dynamic Extraction device;
(2) take by weighing 80% ethanolic solution that weight is 2 times of cold tea raw material total amounts, put into the Dynamic Extraction device, 2h is extracted in 85 ℃ of circulations;
(3) emit extract from dynamic extractor, flame filter press filters, and weighs, and obtains cold tea and extracts stoste;
(4) extracting the propane diols that adds 1.6 times of amounts of cold tea raw material total amount in the stoste to above-mentioned cold tea, is 0.09MPa in vacuum, and evaporating temperature is to extract ethanol in the solvent under 35 ℃ the condition, is steamed to no longer including solvent, namely gets herb tea concentrated solution.
Embodiment 2
A kind of herb tea concentrated solution, the raw material of the following weight portion of employing:
The described herb tea concentrated solution of present embodiment adopts following method preparation:
(1) by the said ratio raw materials weighing, load weighted raw material is cleaned up with deionized water, the 200 order filter cloth bags of packing into are then put into the Dynamic Extraction device;
(2) take by weighing 90% ethanolic solution that weight is 1 times of cold tea raw material total amount, put into the Dynamic Extraction device, 4h is extracted in 90 ℃ of circulations;
(3) emit extract from dynamic extractor, flame filter press filters, and weighs, and obtains cold tea and extracts stoste;
(4) extracting the triethyl citrate that adds 1.85 times of amounts of cold tea raw material total amount in the stoste to above-mentioned cold tea, is 0.1MPa in vacuum, and evaporating temperature is to extract ethanol in the solvent under 30 ℃ the condition, is steamed to no longer including solvent, namely gets herb tea concentrated solution.
Embodiment 3
A kind of herb tea concentrated solution, the raw material of the following weight portion of employing:
The described herb tea concentrated solution of present embodiment adopts following method preparation:
(1) by the said ratio raw materials weighing, load weighted raw material is cleaned up with deionized water, the 200 order filter cloth bags of packing into are then put into the Dynamic Extraction device;
(2) take by weighing 70% ethanolic solution that weight is 4 times of cold tea raw material total amounts, put into the Dynamic Extraction device, 1h is extracted in 80 ℃ of circulations;
(3) emit extract from dynamic extractor, flame filter press filters, and weighs, and obtains cold tea and extracts stoste;
(4) extracting the glycerine that adds 0.8 times of amount of cold tea raw material total amount in the stoste to above-mentioned cold tea, is 0.08MPa in vacuum, and evaporating temperature is to extract ethanol in the solvent under 44 ℃ the condition, is steamed to no longer including solvent, namely gets herb tea concentrated solution.
The test of embodiment 4 aroma retaining effect
Commercially available herb tea concentrated solution, embodiment 1 preparation herb tea concentrated solution, embodiment 2 preparation herb tea concentrated solutions, embodiment 3 preparation herb tea concentrated solutions are cooked the hard candy application experiment:
The hard candy prescription:
Malt syrup 70g;
White granulated sugar 80g;
Water 30g;
Citric acid 1g;
Herb tea concentrated solution (concrete addition sees the following form 1).
Syrup, white granulated sugar, water are weighed up, be heated to syrup and little Huang occurs, be heated to temperature and rise to 150 ℃, add citric acid and cold tea extract or concentrate when being cooled to 130 ℃.Stir last mold forming cooling, packing.
The fragrant group of commenting that is made up of 30 people gives a mark according to this hard candy product fragrance concentration, and the high person of fragrance concentration got 10 fens, 30 people's marking result is added and averages be this product score, the results are shown in following table 1.
The addition of the different herb tea concentrated solutions of table 1. and fragrance score
From last table 1, can find out, the herb tea concentrated solution that the embodiment of the invention provides, under the situation of addition than commercially available herb tea concentrated solution much less, its aroma retaining effect also is higher than commercially available herb tea concentrated solution, has the advantage of high temperature lasting in process.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. the extracting method of a herb tea concentrated solution is characterized in that, may further comprise the steps:
(1) adding weight in the cold tea raw material is cold tea raw material total amount 1-4 70%-90% ethanolic solution doubly, and Dynamic Extraction obtains cold tea and extracts stoste;
(2) extract to above-mentioned cold tea that to add weight in the stoste be cold tea raw material total amount 0.8-1.85 edible high boiling solvent doubly, be 0.08-0.1MPa in vacuum, evaporating temperature is to extract ethanol under 30-44 ℃ the condition, is steamed to no longer including ethanol, namely gets herb tea concentrated solution; The boiling point of described edible high boiling solvent is not less than 150 ℃.
2. the extracting method of herb tea concentrated solution according to claim 1 is characterized in that, described edible high boiling solvent is at least a in propane diols, glycerine and the triethyl citrate.
3. the extracting method of herb tea concentrated solution according to claim 1 is characterized in that, in the step (2), described vacuum is 0.09-0.1MPa, and described evaporating temperature is 35-44 ℃.
4. the extracting method of herb tea concentrated solution according to claim 1 is characterized in that, in the step (1), the weight of described ethanolic solution is 2-3 times of cold tea raw material total amount, and concentration is 80%～90%.
5. the extracting method of herb tea concentrated solution according to claim 1 is characterized in that, in the step (1), the condition of described Dynamic Extraction is 80-90 ℃, 1-4h.
6. the extracting method of herb tea concentrated solution according to claim 1 is characterized in that, in the described step (1), also comprises cold tea is extracted the step that stoste is filtered.
7. the extracting method of herb tea concentrated solution according to claim 1 is characterized in that, described step (1) also comprises before with the step in the cleaning of cold tea raw material and the filter cloth bag of packing into.
8. the extracting method of herb tea concentrated solution according to claim 1 is characterized in that, described cold tea raw material is the raw material of following weight portion:
9. the extracting method of herb tea concentrated solution according to claim 1 is characterized in that, described cold tea raw material is the raw material of following weight portion:
10. the herb tea concentrated solution that obtains according to each extracting method of claim 1-9.
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| CN101744233A (en) * | 2008-11-28 | 2010-06-23 | 王世正 | Isatis root cold tea |
| CN102326638A (en) * | 2011-07-25 | 2012-01-25 | 广西金赛保健品有限责任公司 | Cold brewed herbal tea and preparation method thereof |
| CN101473879B (en) * | 2008-11-28 | 2012-06-27 | 澳华达香料科技(广州)有限公司 | Preparation method of Yunnan black tea extract and use thereof |
| CN101822418B (en) * | 2010-04-21 | 2012-08-29 | 湖南嘉利香料有限公司 | Tea stem extract of oolong tea and preparation method and application thereof |
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| CN1328783A (en) * | 2001-07-09 | 2002-01-02 | 兴国县品禄园实业有限公司 | Sarcandra cold tea and its production method |
| CN101744233A (en) * | 2008-11-28 | 2010-06-23 | 王世正 | Isatis root cold tea |
| CN101473879B (en) * | 2008-11-28 | 2012-06-27 | 澳华达香料科技(广州)有限公司 | Preparation method of Yunnan black tea extract and use thereof |
| CN101822418B (en) * | 2010-04-21 | 2012-08-29 | 湖南嘉利香料有限公司 | Tea stem extract of oolong tea and preparation method and application thereof |
| CN102326638A (en) * | 2011-07-25 | 2012-01-25 | 广西金赛保健品有限责任公司 | Cold brewed herbal tea and preparation method thereof |
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