CN102028060A - Method for preparing extract of oil soluble tea - Google Patents

Method for preparing extract of oil soluble tea Download PDF

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Publication number
CN102028060A
CN102028060A CN2010105285606A CN201010528560A CN102028060A CN 102028060 A CN102028060 A CN 102028060A CN 2010105285606 A CN2010105285606 A CN 2010105285606A CN 201010528560 A CN201010528560 A CN 201010528560A CN 102028060 A CN102028060 A CN 102028060A
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China
Prior art keywords
extract
oil
soluble tea
oil soluble
tea extract
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Pending
Application number
CN2010105285606A
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Chinese (zh)
Inventor
王岳飞
徐平
孙达
陈红波
杨贤强
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Zhejiang University ZJU
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Zhejiang University ZJU
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Publication date
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Priority to CN2010105285606A priority Critical patent/CN102028060A/en
Publication of CN102028060A publication Critical patent/CN102028060A/en
Pending legal-status Critical Current

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  • Coloring Foods And Improving Nutritive Qualities (AREA)
  • Tea And Coffee (AREA)

Abstract

The invention relates to extraction of tea ingredients, and aims to provide a method for preparing extract of oil soluble tea. The method comprises the following steps: fresh leaves of tea are subjected to steam deactivation of enzymes, are dried, are crushed into scraps less than 20 meshes, and are extracted in lipophilic solution in a dark place for 8 to 48 hours; and the extract is centrifugally decompressed and concentrated until no solvent is vaporized, and the solvent is reclaimed and extracted to obtain dark green extract, namely the oil soluble tea extract. The yield of the oil soluble tea extract which is prepared by the oil soluble tea extract preparing method is between 8 and 12 percent, and the solvent recovery rate reaches over 95 percent, and the production cost is low. The oil soluble tea extract which is prepared by the method can be easily dissolved in various oil systems.

Description

A kind of preparation method of oil-soluble tea extract
Technical field
The present invention relates to tea component and extract, be specifically related to a kind of preparation method of oil-soluble tea extract.
Background technology
Contain rich nutrient substances and active component in the tealeaves, as Polyphenols and amino acid, carbohydrate and lipoidis, multivitamin, and the mineral matter that needs of various human body etc., these compositions are that the many health-care efficacies of tealeaves performance provide the foundation just.Since the eighties in 20th century, research about tea extract deepens continuously, various tea extracts are prepared one after another and are used, and wherein deep to contain water soluble tea extracts researchs such as Tea Polyphenols, theanine and tea polysaccharide again, preparation technology is also ripe.
Yet,, cause its application to be restricted because water soluble tea extracts dissolubility in the grease system is low.Except that containing a large amount of water soluble ingredients, also contain the liposoluble constituent abundant just like chlorophyll, carrotene, lipopolysaccharides, lipoidis, liposoluble vitamin etc. in the tealeaves, these compositions not only have high nutritive value, also have many health cares simultaneously.Yet, up to now, any directly report or the patent of preparation oil-soluble extract from tealeaves are not arranged also.Therefore, from tealeaves, extract a kind of oil-soluble extract, both can expand the range of application of tea extract, also can improve the added value of tealeaves, increase the added value of tealeaves, significant.
Summary of the invention
The technical problem to be solved in the present invention is, overcomes deficiency of the prior art, and a kind of preparation method of oil-soluble tea extract is provided.
The preparation method of the oil-soluble tea extract among the present invention may further comprise the steps:
(1) fresh tea leaf is dried behind steam beating, and the tealeaves blade of drying is ground into less than 20 purpose fragments;
(2) the lucifuge lixiviate 8~48 hours in the lipophilic solvent of 4~10 times of mass volume ratios of the blade after pulverizing;
(3) extract is evaporated to after centrifugal and no longer includes solvent and steam, and reclaims extraction solvent, blackish green medicinal extract be the oil-soluble tea extract.
Among the present invention, described lipophilic solvent is at least a in n-butanol, isobutanol or the n-hexane.
Among the present invention, during to the extract centrifugally operated, be to adopt tubular type centrifugal, rotating speed is 19000r/min.
Beneficial effect of the present invention is:
The oil-soluble tea extract yield of oil-soluble tea extract preparation method of the present invention preparation is 8%~12% (accounting for fannings sheet dry weight), and solvent recovering rate reaches more than 95%, and production cost is low.The oil-soluble tea extract of the inventive method preparation is all very easily dissolvings in various grease systems.
The specific embodiment
Below in conjunction with embodiments of the invention the present invention is further described.
Embodiment 1
Oven dry is crushed to less than 20 order fragments behind the fresh tea leaf steam beating, 500g fannings sheet is put into the n-butanol lucifuge lixiviate 8 hours of 4 times of mass volume ratios, leaching liquor is evaporated to behind tube centrifuge centrifugal (19000r/min) and no longer includes n-butanol and steam, reclaim n-butanol, get blackish green medicinal extract and be the oil-soluble tea extract, yield 8.5% (accounting for fannings sheet dry weight).
Embodiment 2
Oven dry is crushed to less than 20 order fragments behind the fresh tea leaf steam beating, 500g dry crushing sheet is put into the isobutanol lucifuge lixiviate 28 hours of 7 times of mass volume ratios, leaching liquor is evaporated to behind tube centrifuge centrifugal (19000r/min) and no longer includes isobutanol and steam, reclaim isobutanol, get blackish green medicinal extract and be the oil-soluble tea extract, yield 9.8% (accounting for fannings sheet dry weight).
Embodiment 3
Oven dry is crushed to less than 20 order fragments behind the fresh tea leaf steam beating, 500g dry crushing sheet is put into the n-hexane lucifuge lixiviate 48 hours of 10 times of mass volume ratios, leaching liquor is evaporated to behind tube centrifuge centrifugal (19000r/min) and no longer includes n-hexane and steam, reclaim n-hexane, get blackish green medicinal extract and be the oil-soluble tea extract, yield 11.8% (accounting for fannings sheet dry weight).
Contain nutritional labelings such as chlorophyll, carrotene, lipopolysaccharides, lipoidis, liposoluble vitamin and a small amount of catechin in the oil-soluble tea extract.The present inventor discovers, the oil-soluble tea extract 100~200mg/L that adds the inventive method preparation is in edible oils such as soybean oil, peanut oil, tea seed oil, fiery sesame oil, to make the oil viscosity value reduce by 15~25%, significantly increase the flowability of edible oil.
At last, it is also to be noted that, obviously the invention is not restricted to above embodiment, many distortion can also be arranged, all distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.

Claims (3)

1. the preparation method of an oil-soluble tea extract the steps include:
(1) fresh tea leaf is dried behind steam beating, and the tealeaves blade of drying is ground into less than 20 purpose fragments;
(2) the lucifuge lixiviate 8~48 hours in the lipophilic solvent of 4~10 times of mass volume ratios of the blade after pulverizing;
(3) extract is evaporated to after centrifugal and no longer includes solvent and steam, and reclaims extraction solvent, blackish green medicinal extract be the oil-soluble tea extract.
2. the preparation method of oil-soluble tea extract according to claim 1 is characterized in that, described lipophilic solvent is at least a in n-butanol, isobutanol or the n-hexane.
3. the preparation method of oil-soluble tea extract according to claim 1 is characterized in that, during to the extract centrifugally operated, is to adopt tubular type centrifugal, and rotating speed is 19000r/min.
CN2010105285606A 2010-11-02 2010-11-02 Method for preparing extract of oil soluble tea Pending CN102028060A (en)

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Application Number Priority Date Filing Date Title
CN2010105285606A CN102028060A (en) 2010-11-02 2010-11-02 Method for preparing extract of oil soluble tea

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Application Number Priority Date Filing Date Title
CN2010105285606A CN102028060A (en) 2010-11-02 2010-11-02 Method for preparing extract of oil soluble tea

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CN102028060A true CN102028060A (en) 2011-04-27

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102488025A (en) * 2011-12-14 2012-06-13 钱永林 Tea-leaf healthcare blended oil and preparation method for same
CN104431987A (en) * 2014-11-13 2015-03-25 中国科学院山西煤炭化学研究所 Method for extracting lipid-soluble antioxidant from aronia fruits
CN105875954A (en) * 2016-05-02 2016-08-24 浙江大学 Preparation method of fat-soluble tea leaf extract with tea aroma and tea color
CN111743956A (en) * 2020-07-21 2020-10-09 陈昆 Multifunctional tea essential oil and preparation method thereof
CN115678309A (en) * 2022-08-15 2023-02-03 中国农业科学院茶叶研究所 Production process for preparing natural tea pigment from tea waste and tea pigment product

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1399893A (en) * 2002-09-03 2003-03-05 张守勤 Cold extraction method of effective component of tea
KR20050013352A (en) * 2003-07-28 2005-02-04 그린텍이십일 주식회사 Method for Extracting Green Tea Extract Using Supercritical Fluid
CN101417916A (en) * 2007-10-26 2009-04-29 中国热带农业科学院分析测试中心 Glutinous rice scented tea squalene and preparation method thereof
CN101637545A (en) * 2009-08-27 2010-02-03 赵基元 Supercritical extraction method of green tea extract

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1399893A (en) * 2002-09-03 2003-03-05 张守勤 Cold extraction method of effective component of tea
KR20050013352A (en) * 2003-07-28 2005-02-04 그린텍이십일 주식회사 Method for Extracting Green Tea Extract Using Supercritical Fluid
CN101417916A (en) * 2007-10-26 2009-04-29 中国热带农业科学院分析测试中心 Glutinous rice scented tea squalene and preparation method thereof
CN101637545A (en) * 2009-08-27 2010-02-03 赵基元 Supercritical extraction method of green tea extract

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
严鸿德等: "《茶叶深加工技术》", 31 January 2001, 中国轻工业出版社 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102488025A (en) * 2011-12-14 2012-06-13 钱永林 Tea-leaf healthcare blended oil and preparation method for same
CN102488025B (en) * 2011-12-14 2013-03-27 钱永林 Tea-leaf healthcare blended oil and preparation method for same
CN104431987A (en) * 2014-11-13 2015-03-25 中国科学院山西煤炭化学研究所 Method for extracting lipid-soluble antioxidant from aronia fruits
CN105875954A (en) * 2016-05-02 2016-08-24 浙江大学 Preparation method of fat-soluble tea leaf extract with tea aroma and tea color
CN111743956A (en) * 2020-07-21 2020-10-09 陈昆 Multifunctional tea essential oil and preparation method thereof
CN115678309A (en) * 2022-08-15 2023-02-03 中国农业科学院茶叶研究所 Production process for preparing natural tea pigment from tea waste and tea pigment product

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Application publication date: 20110427