CN103300183B - Cool tea concentrated liquid and extraction method thereof - Google Patents
Cool tea concentrated liquid and extraction method thereof Download PDFInfo
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- CN103300183B CN103300183B CN201310245450.2A CN201310245450A CN103300183B CN 103300183 B CN103300183 B CN 103300183B CN 201310245450 A CN201310245450 A CN 201310245450A CN 103300183 B CN103300183 B CN 103300183B
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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 extraction technical 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, cold tea local flavor has been widely used in the various food such as candy, bread, melon seeds.In the time 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: taking water as extracting solvent, adopt lixiviate or adopt membrane separation technique or Vacuum Concentration technology to extract concentrate, centrifugal, sterilization packaging forms herb tea concentrated solution.In the herb tea concentrated solution of preparing with the method, contain the materials such as a large amount of polysaccharide, should not preserve, need vacuum packaging, and in the time of Vacuum Concentration cold tea extract, the volatile materials loss with cold tea peculiar flavour is larger, and in the time of the making cold tea typical local food in later stage, there is the not defect of lasting of high temperature, if add in solid food, particularly in bakery product, not only use amount is large, does not also have the effect of flavouring.
Summary of the invention
Based on this, the object of the invention is to overcome the defect of prior art, a kind of extracting method of herb tea concentrated solution is provided, the herb tea concentrated solution that adopts the method to extract have advantages of the concentration of volatile flavor substance high and in post-production process high temperature lasting.
For achieving the above object, the present invention takes following technical scheme: a kind of extracting method of herb tea concentrated solution, comprises the following steps:
(1) in cold tea raw material, adding weight is cold tea raw material total amount 1-4 70%-90% ethanolic solution doubly, and Dynamic Extraction, obtains cold tea and extract stoste;
(2) extract to above-mentioned cold tea that in stoste, to add weight 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 DEG C, be 0.08-0.1MPa in vacuum, evaporating temperature is to extract ethanol under the condition of 30-44 DEG C, be distilled out of to no longer including ethanol, obtain herb tea concentrated solution.
Extracting method of the present invention, adopting water and ethanol is solvent, utilize Dynamic Extraction technology to prepare cold tea and extract stoste, only need the solvent of conventional static extraction 10% just can reach good extraction effect, and because 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, it is more than 5 times that the concentration of the volatile flavor substance of final products is conventional extracting method.Then can directly add high boiling solvent, under suitable vacuum and temperature, the lower ethanol of boiling point that cold tea is extracted in stoste cements out, retain high boiling solvent, and because this process evaporating temperature is lower, can retain volatile flavor substance, thereby make herb tea concentrated solution high temperature resistant and that volatile flavor substance concentration is high, now the solvent in herb tea concentrated solution is the mixed solvent of water and high boiling solvent.Due to the existence of high boiling solvent, in herb tea concentrated solution, be difficult for raw bacterium, the herb tea concentrated solution of being therefore made up of the method has the vacuum packaging of not needing, long shelf-life, the advantages such as convenient storage and transport.And due to the existence of high boiling solvent, this herb tea concentrated solution is in follow-up cold tea typical local food manufacturing process, compared to the low boiling of ethanol, volatile flavor substance is not easy to lose along with solvent evaporation because of high temperature, there is the still feature of lasting of high temperature, not only can be used for field of beverage, also can be used for the fields such as essence, bakery product, candy, expanded the application of cold tea extract.
In some embodiment, described edible high boiling solvent is at least one in propane diols, glycerine and triethyl citrate therein.Above-mentioned high boiling solvent can be with water with arbitrarily than dissolving each other, and there is the feature of colorless and odorless, reduce to greatest extent the impact of high boiling solvent on follow-up food processing process and taste.
In some embodiment, in step (2), described vacuum is 0.09-0.1MPa therein, and described evaporating temperature is 35-44 DEG C.Adopt above-mentioned parameter condition, ethanol can well be cemented out, and not lose volatile flavor substance.
In some embodiment, in 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 above-mentioned parameter condition, can obtain the herb tea concentrated solution that volatile flavor substance concentration is higher.
In some embodiment, in step (1), the condition of described Dynamic Extraction is 80-90 DEG C, 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 in the folium herbs of easy extraction selecting lower temperature and short period, the ratio of rhizome medicinal material that is difficult for extraction is more optional with higher temperature and long period, to obtain good extraction effect.
In some embodiment, in described step (1), also comprise cold tea is extracted to the step that stoste is filtered therein.Avoid the dregs of a decoction to enter following process program, affect products taste.Preferably adopt flame filter press to extract stoste to cold tea and filter, there is filter area large, the feature that flow is large.
In some embodiment, described step (1) before, also comprises the cleaning of cold tea raw material and packs the step in filter cloth bag into therein.Cleaning step meets hygienic requirements in order to ensure this preparation method, and each cold tea raw material is packed in filter cloth bag, can reduce cold tea and extract the residual of stoste Chinese medicine slag.
Therein in some embodiment, the raw material that described cold tea raw material is following weight portion:
In above-mentioned cold tea raw material, each composition acting in conjunction, complements each other, and makes this herb tea concentrated solution both have clearing heat and detoxicating effect, has again good mouthfeel, with rich flavor mellow.Can be widely used in the various cold tea typical local food of preparation, have resistance to elevated temperatures good, technique is simple, and long shelf-life facilitates the advantage of storage and transport.
Therein in some embodiment, the raw material that described cold tea raw material is following weight portion:
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 obtaining 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 Dynamic Extraction technology, reduce quantity of solvent, the volatile flavor substance loss having caused while having avoided concentrated, utilize again high boiling solvent that lower boiling ethanol is displaced, therefore it is high that the herb tea concentrated solution of being made up of the method has volatile flavor substance concentration, do not need vacuum packaging, long shelf-life, the advantages such as convenient storage and transport, also, because it has high temperature lasting, can be widely used in the fields such as beverage, essence, bakery product, candy, expand the application of cold tea extract.
And each composition acting in conjunction in the cold tea raw material that the present invention adopts, complements each other, and makes this herb tea concentrated solution both have clearing heat and detoxicating effect, has again good mouthfeel, with rich flavor mellow.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further explained, but the present invention is not caused to any restriction.
Embodiment 1
A kind of herb tea concentrated solution, the raw material of the following weight portion of employing:
Described in the present embodiment, herb tea concentrated solution adopts following method preparation:
(1) by said ratio raw materials weighing, load weighted raw material is cleaned up by deionized water, then pack 200 order filter cloth bags into, put into Dynamic Extraction device;
(2) take 80% ethanolic solution that weight is 2 times of cold tea raw material total amounts, put into Dynamic Extraction device, 2h is extracted in 85 DEG C of circulations;
(3) from dynamic extractor, emit extract, flame filter press filters, and weighs, and obtains cold tea and extracts stoste;
(4) extracting to above-mentioned cold tea the propane diols that adds 1.6 times of amounts of cold tea raw material total amount in stoste, is 0.09MPa in vacuum, and evaporating temperature is to extract ethanol in solvent under the condition of 35 DEG C, is distilled out of to no longer including solvent, obtains herb tea concentrated solution.
Embodiment 2
A kind of herb tea concentrated solution, the raw material of the following weight portion of employing:
Described in the present embodiment, herb tea concentrated solution adopts following method preparation:
(1) by said ratio raw materials weighing, load weighted raw material is cleaned up by deionized water, then pack 200 order filter cloth bags into, put into Dynamic Extraction device;
(2) take 90% ethanolic solution that weight is 1 times of cold tea raw material total amount, put into Dynamic Extraction device, 4h is extracted in 90 DEG C of circulations;
(3) from dynamic extractor, emit extract, flame filter press filters, and weighs, and obtains cold tea and extracts stoste;
(4) extracting to above-mentioned cold tea the triethyl citrate that adds 1.85 times of amounts of cold tea raw material total amount in stoste, is 0.1MPa in vacuum, and evaporating temperature is to extract ethanol in solvent under the condition of 30 DEG C, is distilled out of to no longer including solvent, obtains herb tea concentrated solution.
Embodiment 3
A kind of herb tea concentrated solution, the raw material of the following weight portion of employing:
Described in the present embodiment, herb tea concentrated solution adopts following method preparation:
(1) by said ratio raw materials weighing, load weighted raw material is cleaned up by deionized water, then pack 200 order filter cloth bags into, put into Dynamic Extraction device;
(2) take 70% ethanolic solution that weight is 4 times of cold tea raw material total amounts, put into Dynamic Extraction device, 1h is extracted in 80 DEG C of circulations;
(3) from dynamic extractor, emit extract, flame filter press filters, and weighs, and obtains cold tea and extracts stoste;
(4) extracting to above-mentioned cold tea the glycerine that adds 0.8 times of amount of cold tea raw material total amount in stoste, is 0.08MPa in vacuum, and evaporating temperature is to extract ethanol in solvent under the condition of 44 DEG C, is distilled out of to no longer including solvent, obtains herb tea concentrated solution.
Embodiment 4 aroma retaining effect tests
Prepared by commercially available herb tea concentrated solution, embodiment 1 to herb tea concentrated solution, embodiment 2 are prepared herb tea concentrated solution, embodiment 3 prepares herb tea concentrated solution and cooks hard candy application experiment:
Hard candy formula:
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 occur micro-Huang, be heated to temperature and rise to 150 DEG C, while being cooled to 130 DEG C, add citric acid and cold tea extract or concentrate.Stir, upper die forming is cooling, packaging.
The Ping Xiang group being made up of 30 people gives a mark according to this hard candy product fragrance concentration, and the high person of fragrance concentration obtains 10 points, 30 people's marking result is added and averaged 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 upper table 1, can find out, the herb tea concentrated solution that the embodiment of the present invention provides, in addition, than commercially available herb tea concentrated solution much less in the situation that, its aroma retaining effect, also higher than commercially available herb tea concentrated solution, has advantages 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 the scope of the claims of the present invention.It 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 (8)
1. an extracting method for herb tea concentrated solution, is characterized in that, comprises the following steps:
(1) in cold tea raw material, adding weight is cold tea raw material total amount 1-4 70%-90% ethanolic solution doubly, and Dynamic Extraction 1-4h at 80-90 DEG C, obtains cold tea and extract stoste;
(2) extract to above-mentioned cold tea that in stoste, to add weight 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 the condition of 30-44 DEG C, is distilled out of to no longer including ethanol, obtains herb tea concentrated solution; Described edible high boiling solvent is at least one in propane diols, glycerine and triethyl citrate.
2. the extracting method of herb tea concentrated solution according to claim 1, is characterized in that, in step (2), described vacuum is 0.09-0.1MPa, and described evaporating temperature is 35-44 DEG C.
3. the extracting method of herb tea concentrated solution according to claim 1, is characterized in that, in step (1), the weight of described ethanolic solution is 2-3 times of cold tea raw material total amount, and concentration is 80%～90%.
4. the extracting method of herb tea concentrated solution according to claim 1, is characterized in that, in described step (1), also comprises cold tea is extracted to the step that stoste is filtered.
5. the extracting method of herb tea concentrated solution according to claim 1, is characterized in that, described step (1) before, also comprises the cleaning of cold tea raw material and packs the step in filter cloth bag into.
6. the extracting method of herb tea concentrated solution according to claim 1, is characterized in that, the raw material that described cold tea raw material is following weight portion:
7. the extracting method of herb tea concentrated solution according to claim 1, is characterized in that, the raw material that described cold tea raw material is following weight portion:
8. the herb tea concentrated solution obtaining according to the extracting method of claim 1-7 any one.
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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 |
| CN102326638B (en) * | 2011-07-25 | 2014-05-07 | 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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