CN103585782B - A kind of method utilizing ultrasonic cavitation technology to prepare red date extract - Google Patents
A kind of method utilizing ultrasonic cavitation technology to prepare red date extract Download PDFInfo
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- CN103585782B CN103585782B CN201310613533.2A CN201310613533A CN103585782B CN 103585782 B CN103585782 B CN 103585782B CN 201310613533 A CN201310613533 A CN 201310613533A CN 103585782 B CN103585782 B CN 103585782B
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Abstract
A kind of method utilizing ultrasonic cavitation technology to prepare red date extract provided by the present invention, mainly comprises the steps: that red date is cleaned by (1), dries, stoning, dries, and pulverizes, sieves as raw material; (2) raw material is loaded ultrasonic extractor, add ethanol, be uniformly mixed; (3) set ultrasound works mode, utilize high sound pressure, the ultrasonic wave of high-frequency megahertz wave band directly acts on the mixed liquor of red date raw material and ethanol, constantly stir in leaching process; (4) pour out filtrate, and press residue is carried out again filtration and obtain pressing filtrate, merging filtrate and pressing filtrate, by its evaporation and concentration to thick or medicinal extract shape, obtain jujube tincture or jujube cream, vacuum is preserved.The present invention utilizes hyperacoustic cavitation effect, compared with the ultrasonic wave of traditional low acoustic pressure, low-frequency KHz frequency band, extraction efficiency improves more than 20%, significantly shorten extraction time, remarkable saving electric energy, the red date fragrance avoiding high-temperature heat treatment to cause and local flavor lose problem.<!-- 2 -->
Description
Technical field
The invention belongs to the preparation field of plant extracts, particularly relate to a kind of method utilizing ultrasonic cavitation technology to prepare red date extract.
Background technology
Plant extracts take plant as raw material, according to the needs of the purposes to the final products extracted, through physical chemistry extraction and isolation process, the directed a certain or plurality of active ingredients obtaining and concentrate in plant, and the product not changing its active ingredient structure and formed, being the primary raw material of autonomic drug preparation, and can be applicable to the industries such as nutritious supplementary pharmaceutical, health food, cosmetics, is the core product on natural medicaments health-product market.Red date is China's special product, and output accounts for more than 98% of the world.Red date sugar content is high, contains and has multivitamin, amino acid and comprise 36 medium trace element of selenium, strontium, and rich in protein and fat, and especially Vitamin C content is in first of many fruits.Research shows, red date can improve body immunity, and can inhibition cancer cell, to preventing and treating osteoporosis anaemia Be very effective, can also softening blood vessel, treatment hypertension, and can antiallergy, except stench strange taste, antitoxic heart-soothing and sedative, brain healthy, whet the appetite.At present, the fresh jujube storage capacity of China is less than about 20% of total output, and refrigeration ability is about 7%, and fresh fruit rotting rate reaches 20% ~ 25%, and the deep process technology research of red date becomes red dates industry urgent problem.
At present, the preparation method of red date extract is: after high-temperature heating, adopts alcohol extract, then concentrates and makes corresponding jujube tincture or medicinal extract.This method and technology is simple, but product is of low quality, and the loss of fragrance and local flavor is also more serious.Therefore, fragrance mellow, good fluidity, light color, natural red date extract are the scarce resources on market.Up-to-date scientific research finds,
Summary of the invention
The invention provides a kind of recovery rate high, extraction time is short, and can keep a kind of method utilizing ultrasonic cavitation technology to prepare red date extract of the original fragrance of red date and local flavor.
Utilize ultrasonic cavitation technology to prepare a method for red date extract, mainly comprise the steps: that red date is cleaned by (1), dry, stoning, dry, pulverize, sieve as raw material; (2) raw material is loaded ultrasonic extractor, add ethanol, be uniformly mixed; (3) set ultrasound works mode, utilize high sound pressure, the ultrasonic wave of high-frequency megahertz wave band directly acts on the mixed liquor of red date raw material and ethanol, constantly stir in leaching process; (4) pour out filtrate, and press residue is carried out again filtration and obtain pressing filtrate, merging filtrate and pressing filtrate, by its evaporation and concentration to thick or medicinal extract shape, obtain jujube tincture or jujube cream, vacuum is preserved.The present invention adopts the ultrasonic wave of megahertz wave band to directly act on the mixed liquor of red date raw material and ethanol, and the punching rate of supercavitation can improve along with frequency and increase, and more effectively can extract the active ingredient of red date, improve extraction efficiency; Filtrate after direct evaporation and concentration ul-trasonic irradiation and the mixed liquor of pressing filtrate can remove the operating procedure of alcohol reflux from, shorten the time of extracting.And the loss of the red date local flavor avoiding high-temperature operation process to cause and fragrance.
Preferably, dried by red date in step (1) at 60 DEG C, the screen-aperture sieved is 0.45 μm, causes the fragrance of red date and local flavor to run off to guarantee to be unlikely to temperature too high in drying course.
Preferably, the concentration of the ethanol added in step (2) is 60%, and the solid-liquid ratio of red date raw material and ethanol is 1:20(Kg:L).
Preferably, directly act on the ultrasonic wave of red date in step (3), its ultrasonic acoustic pressure is 400kpa, and supersonic frequency is 1-2MHz.Adopt the ultrasonic acoustic pressure of above-mentioned parameter, supersonic frequency extraction efficiency than traditional low acoustic pressure, low frequency ultrasound wave height more than 20%.
Preferably, in step (3), ultrasonic wave directly acts on the time of red date is 5 minutes/time, every effect in 2 minutes once, altogether acts on 3 times.Adopt above-mentioned parameter to control ultrasonic wave and extract process, extraction efficiency is better.
Preferably, directly act on the ultrasonic wave of red date in step (3), its supersonic frequency is 1.5MHz.Adopt the ultrasonic wave extraction efficiency of said frequencies best.
The present invention utilizes hyperacoustic cavitation effect, and the micro-bubble (cavitation nucleus) existed in red date starting material liquid mixture is activated a series of dynamic processes such as shown vibration, growth, contraction, collapse under ul-trasonic irradiation.During ultrasonic cavitation, cavitation bubble collapse moment can in little space by the fault offset of its high concentration out, and when extracting, the cell of broken red date, makes its intracellular active ingredient more effectively be extracted.Compared with the ultrasonic wave of traditional low acoustic pressure, low-frequency KHz frequency band, extraction efficiency improves more than 20%.Ethanol filtrate after ultrasonic wave direct effect and pressing filtrate are carried out concentration and evaporation do not need to carry out alcohol reflux operation, significantly shorten extraction time.And without the need to carrying out high-temperature heating treatment operation, significantly electric energy can be saved on the one hand, red date fragrance high-temperature heat treatment can being avoided to cause on the other hand and local flavor lose problem.
Detailed description of the invention
The present invention is a kind of method utilizing ultrasonic cavitation technology to prepare red date extract, mainly comprises the steps: that red date is cleaned by (1), dries, stoning, dries, and pulverizes, sieve as raw material, bake out temperature is 60 DEG C, and the screen-aperture sieved is 0.45 μm; (2) raw material is loaded ultrasonic extractor, add the ethanol that concentration is 60%, the solid-liquid ratio of red date raw material and ethanol is 1:20(Kg:L), be uniformly mixed; (3) ultrasound works mode is set, utilize high sound pressure, the ultrasonic wave of high-frequency megahertz wave band directly acts on the mixed liquor of red date raw material and ethanol, ultrasonic acoustic pressure is 400kpa, supersonic frequency is 1.5MHz, ul-trasonic irradiation is 5 minutes/time in the time of mixed liquor, every 2 minutes ul-trasonic irradiations once, altogether act on 3 times, constantly stir in leaching process; (4) pour out filtrate, and press residue is carried out again filtration and obtain pressing filtrate, merging filtrate and pressing filtrate, by its evaporation and concentration to thick or medicinal extract shape, obtain jujube tincture or jujube cream, vacuum is preserved.According to said method, the recovery rate of red date active ingredient can reach 95.46%.
Claims (6)
1. utilize ultrasonic cavitation technology to prepare a method for red date extract, it is characterized in that mainly comprising the steps: that red date is cleaned by (1), dry, stoning, dry, pulverize, sieve as raw material; (2) raw material is loaded ultrasonic extractor, add ethanol, be uniformly mixed; (3) set ultrasound works mode, utilize high sound pressure, the ultrasonic wave of high-frequency megahertz wave band directly acts on the mixed liquor of red date raw material and ethanol, constantly stir in leaching process; (4) pour out filtrate, and press residue is carried out again filtration and obtain pressing filtrate, merging filtrate and pressing filtrate, by its evaporation and concentration to thick or medicinal extract shape, obtain jujube tincture or jujube cream, vacuum is preserved.
2. a kind of method utilizing ultrasonic cavitation technology to prepare red date extract according to claim 1, it is characterized in that: dried at 60 DEG C by red date in step (1), the screen-aperture sieved is 0.45 μm.
3. a kind of method utilizing ultrasonic cavitation technology to prepare red date extract according to claim 1, it is characterized in that: the concentration of the ethanol added in step (2) is 60%, the solid-liquid ratio of red date raw material and ethanol is 1:20(Kg:L).
4. a kind of method utilizing ultrasonic cavitation technology to prepare red date extract according to claim 1, it is characterized in that: the ultrasonic wave directly acting on red date in step (3), its ultrasonic acoustic pressure is 400kpa, and supersonic frequency is 1-2MHz.
5. a kind of method utilizing ultrasonic cavitation technology to prepare red date extract according to claim 1, is characterized in that: in step (3), ultrasonic wave directly acts on the time of red date is 5 minutes/time, every effect in 2 minutes once, altogether acts on 3 times.
6. a kind of method utilizing ultrasonic cavitation technology to prepare red date extract according to claim 4, it is characterized in that: the ultrasonic wave directly acting on red date in step (3), its supersonic frequency is 1.5MHz.
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| CN103952241B (en) * | 2014-05-22 | 2015-08-05 | 嘉兴市得百科新材料科技有限公司 | A kind of red date spice mixt and preparation method thereof |
| CN105011356A (en) * | 2015-06-19 | 2015-11-04 | 湖北中烟工业有限责任公司 | Preparation method of flavoring and moisturizing agent using glucoside of red dates |
| CN110935192B (en) * | 2019-12-26 | 2022-05-27 | 福建创新食品科技有限公司 | Ultrasonic-assisted essence extraction device and process based on powder essence processing |
Citations (3)
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| CN101942361A (en) * | 2010-09-28 | 2011-01-12 | 河南省新郑金叶香料有限公司 | Jujube flavor base, and preparation method and application thereof |
| CN102382161A (en) * | 2011-08-26 | 2012-03-21 | 食品行业生产力促进中心 | Method for extracting red date cyclic adenosine monophosphate through ultrasonic composite membrane technology |
| CN102396677A (en) * | 2010-09-14 | 2012-04-04 | 浙江科技学院 | Method for preparing jujube perfume, jujube dietary fiber and the like by comprehensive utilization |
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| JP2004089786A (en) * | 2002-08-29 | 2004-03-25 | Croda Japan Kk | Extraction method for plant extract |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102396677A (en) * | 2010-09-14 | 2012-04-04 | 浙江科技学院 | Method for preparing jujube perfume, jujube dietary fiber and the like by comprehensive utilization |
| CN101942361A (en) * | 2010-09-28 | 2011-01-12 | 河南省新郑金叶香料有限公司 | Jujube flavor base, and preparation method and application thereof |
| CN102382161A (en) * | 2011-08-26 | 2012-03-21 | 食品行业生产力促进中心 | Method for extracting red date cyclic adenosine monophosphate through ultrasonic composite membrane technology |
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