WO2016063121A1 - 制备具有不同味道的茶叶提取物的方法 - Google Patents
制备具有不同味道的茶叶提取物的方法 Download PDFInfo
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- WO2016063121A1 WO2016063121A1 PCT/IB2015/001957 IB2015001957W WO2016063121A1 WO 2016063121 A1 WO2016063121 A1 WO 2016063121A1 IB 2015001957 W IB2015001957 W IB 2015001957W WO 2016063121 A1 WO2016063121 A1 WO 2016063121A1
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- Prior art keywords
- tea
- extraction
- taste
- extract
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Classifications
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- 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
- A23F3/16—Tea extraction; Tea extracts; Treating tea extract; Making instant tea
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- 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
- A23F3/34—Tea substitutes, e.g. matè; Extracts or infusions thereof
-
- 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
- A23F3/40—Tea flavour; Tea oil; Flavouring of tea or tea extract
-
- 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
- A23F3/40—Tea flavour; Tea oil; Flavouring of tea or tea extract
- A23F3/405—Flavouring with flavours other than natural tea flavour or tea oil
Definitions
- the present invention relates to a method for preparing tea leaf extracts having different tastes, and a beverage prepared by using the extract obtained by the method as a raw material. Background technique
- Extraction is an essential process step in the production of tea powder and ready-to-drink (RTD) beverages.
- many extraction techniques such as microwave assisted or ultrasonic assisted extraction, ultrahigh pressure extraction
- a hot water extraction method based on a batch processing method.
- in-tank extraction and metal mesh extraction the use of batch-processed hot water extraction methods is sufficient for the production of one- or two-part extracts that can be used directly in the manufacture of ready-to-drink beverage products, such as stock solutions.
- the batch process is indeed a simple, fast and cost-effective extraction process.
- these advantages of batch processing are at the expense of the intensity, concentration and extraction efficiency of the aromatic odor.
- the tea extract prepared by the method has low aromatic intensity, which is caused not only by the generally believed loss of volatilization during the extraction process, but also by the low extraction rate caused by low temperature, short contact time, and in tea.
- Use of a polar solvent for the non-polar aroma component It is evident that significant aromatics remain in the feedstock after batch extraction.
- Another method of producing tea extracts is column extraction.
- the cylinder is filled with tea leaves and hot water enters the bottom of the column and passes through the entire column.
- the concentrated tea extract emerges from the top of the column and is rapidly cooled to room temperature or below room temperature.
- the tea concentrate e.g., 5-20 Brix
- the aromatics of the tea are well retained in the production process.
- the treatment of the extract is to directly discharge the extract, and the purpose is to make at least one substance in the extract.
- the extraction efficiency is higher.
- the present invention continuously collects the eluate in stages, realizes separation of taste, and can also collect different segments according to the taste change shown in the relative taste intensity curve.
- the extracts are recombined to give products of different tastes. Summary of the invention
- the technical problem to be solved by the present invention is to provide a method for preparing tea extracts having different tastes.
- the method utilizes the column extraction technology, elutes the tea leaves with water, and the eluate is continuously collected in stages, thereby realizing the separation of the taste of the tea leaves, and can also be recombined by different extracts according to the relative taste intensity curve. Get products with different tastes.
- the present invention provides a method of preparing tea leaf extracts having different tastes, the method comprising the steps of: 1) loading the tea leaves into the extraction column, continuously extracting with water at 5 ° C - 140 ° C at a flow rate of 20-200 mL / min, and collecting the extracts in stages to draw a relative taste intensity curve; wherein the relative taste The intensity curve is selected from the group consisting of a bitterness curve, a taste curve, a umami curve, a sweet taste curve or a combination thereof;
- the method of the present invention further comprises recombining the collected different sections of the extract, and mixing with the milk, juice or plant extract to obtain a more flavored beverage.
- the plant extract is a conventional plant extract for addition to a drink, including but not limited to an extract of chrysanthemum, medlar or mangosteen.
- the tea leaves used in the present invention include, for example, green teas such as Longjing, Biluochun, and Zhuyeqing which are not fermented; black teas having Zhengshan race, red crushed tea, blush, etc.; for example, Pu'er, Qizi, and Qing Black teas such as brick tea; oolong teas such as Wuyi Rock Tea, Tieguanyin, etc.; yellow teas such as Junshan Silver Needle, Mengding Yellow Bud, etc.; white teas such as silver needle bai, gongmei; or A mixture comprising a combination of two or more thereof is included. Among them, green tea or black tea is preferably used.
- the extraction system used in the method of the present invention is shown in Fig. 1.
- the present invention adopts a columnar extraction column for extraction, preferably a closed columnar extraction column, and the tea leaves are filled into the extraction column, and the extraction water is extracted from the extraction column.
- the extraction is carried out by extracting one end to the other end, preferably by passing water from the lower end to the upper end of the extraction column.
- the taste of the present invention generally refers to "bitter taste", "sweet taste”, “sweet taste” and "sweet taste” ⁇
- bitterness in tea is mainly derived from alkaloids, anthocyanins, tea saponins and the like.
- the "smell” refers to a feeling of convergence produced when the oral protein is stimulated to solidify.
- the astringency is mainly derived from tea polyphenols, tannins, and EGCG.
- the "savory taste” refers to a taste taste caused by a compound such as glutamic acid, and the taste thereof comes.
- the source is mainly glutamic acid, theanine, 5-inosinic acid, 5'-guanylic acid, sodium inosine, sodium guanylate or sodium glutamate.
- sweet aftertaste is a pleasant feeling caused by sugar. Certain proteins and some other non-sugar special substances can also cause sweetness. Sweet is usually associated with an aldehyde group and a ketone group attached to a carbonyl group.
- the invention realizes the recombination of the tea taste by drawing the relative taste intensity curves of bitterness, astringency, umami taste and sweet taste, and obtains products with different tastes.
- the method for drawing the relative taste intensity curve is as follows:
- step 4) The sample obtained by step 3) was subjected to sensory evaluation by the panel.
- the panel consisted of at least 5 professional evaluators, and the bitterness, astringency, umami taste and sweetness of each sample were scored separately. , taking the average as the final score, which is the relative taste intensity of the sample;
- the intensity of bitterness, astringency, umami taste and sweet aftertaste are set from low to high, respectively, from 0 minutes to 10 minutes, a total of 11 points, of which 0 points - 2 points are low, 2 points - 4 points Low, 4 points - 6 points are medium, 6 points - 8 points are medium to high, 8 points - 10 points are high, and each flavor intensity of the reference product obtained in step 3) is set to 5;
- the temperature of the extraction water is preferably from 40 ° C to 100 ° C, more preferably from 60 ° C to 90 ° C.
- the flow rate of water is preferably 50-150 mL/min. When the flow rate is too large, the swelling of the tea leaves is uneven; when the flow rate is too slow, the extraction time is prolonged and the production efficiency is low.
- the extraction water it is preferred to use the extraction water to flow upward from the lower side of the column, and to allow the water to flow from bottom to top, thereby avoiding the occurrence of compaction and clogging of the tea leaves, and improving the extraction rate.
- the pressure during the extraction is preferably from 0.1 Mpa to 2 Mpa, more preferably from 0.1 Mpa to 1 Mpa.
- the temperature, flow rate and pressure during the extraction are preferably linear or non-linear.
- the tea leaves have a particle diameter of 10 to 100 mesh.
- an antioxidant in order to match the taste of the tea, an antioxidant, a fragrance, various esters, an organic acid, a pigment, an emulsifier, a preservative, a seasoning, a sweetener, and the like may be added.
- Additives such as sour agents, vitamins, amino acids, vegetable extracts, quality stabilizers, pH adjusters, etc., may be added singly or in combination.
- the method of the present invention is equally applicable to other flavored herbaceous or woody plants, such as chrysanthemum, etc., any herbal extracts and woody plant extracts having different tastes prepared by the method and their recombination
- the beverages obtained afterwards are all within the scope of the present invention.
- the beneficial effects of the present invention are as follows: The method of the present invention collects the extract by segmentation and draws its relative taste curve, and by analyzing the relative taste curve, it can be known that in the early extract, the desired sensory attribute such as the flavor attribute is known.
- the shrinking step produces a tea extract having a high quality taste and a high concentration, and the extraction rate is high.
- the product concentration of the present invention can reach 8-20 Brix, while the traditional tea soup concentration is less than 1 Brix; the extraction rate of the present invention can reach 38%, while the extraction rate of the conventional batch extraction is about 25%. Therefore, the method of the present invention not only saves energy, but also avoids chemical changes caused by heating in the concentration process to affect the taste quality of the product.
- the method of the present invention recombines the collected different sections of the extract or mixes with milk, juice or plant extract according to the change in taste displayed in the relative taste intensity curve, which can be achieved in a very flexible manner.
- the sensory attributes of the tea extract are re-equilibrated to give a beverage of different tastes.
- Figure 1 is a schematic view of the extraction system of the present invention
- Figure 2 is a relative taste intensity curve of green tea extract
- Figure 3 is a graph showing the relative concentration changes of amino acids during green tea extraction
- Figure 4 is a graph showing the relative concentration of total polyphenols during green tea extraction
- Figure 5 is a graph showing the relative concentration change of EGCG during green tea extraction
- Figure 6 is a graph showing the relative concentration of caffeine during green tea extraction
- Figure 7 is a graph showing the changes in Brix and extraction rate during green tea extraction
- Figure 8 is a graph showing the relative taste intensity of the black tea extract
- Figure 9 is a graph showing the relative concentration changes of amino acids during the extraction of black tea.
- Figure 10 is a graph showing the relative concentration of total polyphenols during the extraction of black tea
- Figure 1 1 is a graph showing the relative concentration of flavonoid glycosides during the extraction of black tea
- Figure 12 is a graph showing the relative concentration of caffeine during the extraction of black tea
- Figure 13 is a graph showing changes in Brix and extraction rate during the extraction of black tea.
- BEST MODE FOR CARRYING OUT THE INVENTION In order to more clearly illustrate the present invention, the present invention will be further described below in conjunction with the preferred embodiments and the accompanying drawings. It should be understood by those skilled in the art that the following detailed description is intended to be illustrative and not restrictive.
- Example 1 Preparation Method of Green Tea Extract with Different Tastes
- the pressure during the extraction process is 0.1Mpa - 2Mpa.
- step 4) The sample obtained by step 3) was subjected to sensory evaluation by the panel.
- the panel consisted of 10 professional evaluators, and the bitterness, astringency, umami taste and sweetness of each sample were scored separately. Taking the average of the score as the final score, and the final score is the relative taste intensity of the sample;
- the first 5 portions of the green tea extract are recombined to form a tea syrup solution having the taste and aroma of the concentrated classic Longjing green tea, and having the sense of quality authentic brewed tea. Quality and superior consumer experience.
- the present invention also measures the concentrations of amino acids, total polyphenols, EGCG and caffeine in the collected 9 samples to analyze the correlation between the four substances in green tea and the taste of the green tea extract.
- the present invention measures the relative concentrations of the four substances by the LC-MS method, and the results are shown in Fig. 3-6.
- Figure 3 shows that the relative concentration of amino acids is higher in the early extraction stage and then decreases rapidly.
- the main source of umami in green tea is glutamic acid.
- the relative concentration of amino acids in Figure 3 is similar to the change in umami in Figure 2.
- Figures 4–6 show the plots of the relative concentrations of total polyphenols, EGCG, and caffeine.
- the relative concentrations of the three are lower at the initial stage and then increase significantly.
- the three are the main sources of bitterness and astringency in green tea, similar to the trend of bitterness and astringency in Figure 2.
- the method of the present embodiment can achieve an extraction rate of 32.9% (Fig. 7).
- Fig. 7 As shown in Fig. 7, as the mass ratio of water to green tea increases, the extraction rate gradually increases, and the cumulative brix gradually decreases. At 25%, a tea concentrate having a Brix degree higher than 7 can be obtained.
- Example 2 Preparation method of black tea extract having different tastes
- the pressure during the extraction process is 0.1Mpa - 2Mpa.
- step 4) The sample obtained by step 3) was subjected to sensory evaluation by the panel.
- the panel consisted of 20 professional evaluators, and the bitterness, astringency and sweetness of each sample were respectively tested. Points, the average of the scores is taken as the final score, and the final score is the relative taste intensity of the sample;
- the present invention measures the relative concentrations of the above substances by LC-MS method, and the results are shown in Fig. 9-12.
- Figure 9 shows the relative concentration changes of theanine, glutamic acid and total amino acids during the extraction of black tea, with theanine and glutamic acid being the main sources of umami.
- Figure 9 shows that the relative concentrations of theanine and glutamic acid are higher in the early stages of black tea extraction and then rapidly decrease.
- Figure 10-12 shows the relative concentration changes of total polyphenols, theaflavins and caffeine during the black tea extraction process.
- the above three substances are the main sources of astringency and bitterness.
- the three The relative concentration was lower in the early stage of black tea extraction, then increased, and then decreased, which is the same as the change in the relative taste curve of bitterness and astringency in Fig. 8.
- the method of this example achieves an extraction rate of 38% (see Figure 13), which is much higher than the 26% extraction rate in conventional industrial extraction methods.
- the extraction rate is 25%, an extract having a Brix of 10 can be obtained, and at this time, the mass ratio of tea to water is only 1:3, and a high concentration of black tea can be obtained without a concentration step. Shrink.
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Abstract
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2017520416A JP6815993B2 (ja) | 2014-10-22 | 2015-10-22 | 異なる味を有する茶葉抽出物を調製するための方法 |
US15/520,101 US10757955B2 (en) | 2014-10-22 | 2015-10-22 | Method for preparing tea leaf extracts having different tastes and beverages containing combinations of same |
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CN201410569472.9 | 2014-10-22 | ||
CN201410569472.9A CN105580932B (zh) | 2014-10-22 | 2014-10-22 | 制备具有不同味道的茶叶提取物的方法 |
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WO2016063121A1 true WO2016063121A1 (zh) | 2016-04-28 |
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PCT/IB2015/001957 WO2016063121A1 (zh) | 2014-10-22 | 2015-10-22 | 制备具有不同味道的茶叶提取物的方法 |
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US (1) | US10757955B2 (zh) |
JP (1) | JP6815993B2 (zh) |
CN (1) | CN105580932B (zh) |
WO (1) | WO2016063121A1 (zh) |
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- 2015-10-22 JP JP2017520416A patent/JP6815993B2/ja active Active
- 2015-10-22 WO PCT/IB2015/001957 patent/WO2016063121A1/zh active Application Filing
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Cited By (1)
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---|---|---|---|---|
CN113063867A (zh) * | 2021-03-22 | 2021-07-02 | 宁夏农林科学院 | 一种野生苦味枸杞苦味代谢物质检测方法 |
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Publication number | Publication date |
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US10757955B2 (en) | 2020-09-01 |
US20170311619A1 (en) | 2017-11-02 |
CN105580932B (zh) | 2021-11-30 |
CN105580932A (zh) | 2016-05-18 |
JP2017531436A (ja) | 2017-10-26 |
JP6815993B2 (ja) | 2021-01-20 |
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