CN1034730C - Method of dunaliella collecting and beta-carotene extracting - Google Patents

Method of dunaliella collecting and beta-carotene extracting Download PDF

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Publication number
CN1034730C
CN1034730C CN92107782A CN92107782A CN1034730C CN 1034730 C CN1034730 C CN 1034730C CN 92107782 A CN92107782 A CN 92107782A CN 92107782 A CN92107782 A CN 92107782A CN 1034730 C CN1034730 C CN 1034730C
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algae
water
salt
liquid
salt algae
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CN1084848A (en
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袁生
秦怀兰
虞光华
高正宏
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Nanjing Normal University
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Nanjing Normal University
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Abstract

The present invention relates to a method for collecting salt algae and extracting beta carotene, which is characterized in that salt algae liquid is diluted by water to lower the density of the solution, and salt algae is collected by stagnant sedimentation or centrifugal sedimentation. Obtained salt algae concentrate is further ruptured under expansion by the use of low permeation, and cell liquid is expelled. An obtained algae membrane preparation is suspended in water, and extraction liquid which is extracted by vegetable oil or organic solvent in the state of low permeation is a final product; beta carotene can also be separated out through crystalization by the use of low grade alcohol for sedimentation or concentration. The beta carotene is used for health care and food additives.

Description

Method of dunaliella collecting and beta-carotene extracting
The invention belongs to a kind of extracting method of salt algae β-Hu Luobusu.
Before the present invention realizes, add flocculation agent such as molysite, aluminium salt etc. in the salt algae liquid that people normally will gather, make described salt algae flocculation, make the floating collection of salt algae with the air supporting method again, obtain wet algae enriched material, use citric acid complex flocculation agent such as aluminium salt, molysite etc. then.The concentration method complex process of this salt algae, cost is higher.The method of extracting β-Hu Luobusu from the wet algae enriched material of collecting has: (1) directly adopts vegetable oil extraction β-Hu Luobusu wherein, but solid-liquid separation is difficult, and inconvenience preparation crystal; (2) will wet and extract after the algae enriched material drying, but increase drying plant, and easily cause the oxidational losses of β-Hu Luobusu; (3) the algae enriched material washing desalination of will wetting, the dehydration enrichment carries out freezing heat then and melts, make cell rupture discharge enchylema after, use solvent extraction again, melt equipment but increased freezing heat, time-consuming taking a lot of work; (4) in the extraction agent edible oil, add tensio-active agent so that membranolysis helps the extraction of β-Hu Luobusu, but increased cost, and the removal of tensio-active agent is relatively more difficult.
The objective of the invention is to overcome the problem that exists in the prior art, a kind of extracting method of simple and easy effective salt algae β-Hu Luobusu is provided.
The extracting method of salt algae β-Hu Luobusu of the present invention at first be the salt algae liquid of will gather in 1: (algae liquid: ratio water water) dilutes salt algae liquid (degree Beaume 15-28 °) to 1-10, carry out solid-liquid separation with subsider or commercially available whizzer then, obtain wet algae enriched material, algae liquid is concentrated, salinity reduces, smaller volume is in order to further pre-treatment.
With above-mentioned wet algae enriched material in 1: (algae liquid: ratio water) adds water to 1-10, thermal agitation in basin, make that the salt frustule is hypotonic to be burst, examine under a microscope almost all that the thin chests of algae break, discharge enchylema, carry out solid-liquid separation with subsider or whizzer then, obtain the thick film preparation of the cytolemma, thylakoid membrane etc. of salt algae, wash film again with water for several times, further remove water soluble component, gained algae film preparation is a red-purple, for further extraction usefulness.
With described algae film preparation in 1: (algae film preparation: water: ratio extraction agent) adds water and one or more extraction agents to 1-5: 1-10.The effect of water is to keep hypotonic condition makes frustule be in state of rupture, and helps mixing and fully contacting of algae film and extraction agent.Extraction can be carried out in common extractor, and the extraction liquid layer that the upper strata contains β-Hu Luobusu is collected in room temperature or heated and stirred extraction 10-120 minute, and lower floor's algae-residue and aqueous phase layer are abandoned it.
Described extraction agent mainly adopts the good salad oil of low temperature current downflow or other vegetables oil such as soya-bean oil, rape oil, cottonseed wet goods, also can adopt ether, sherwood oil, hexanaphthene, hexane, acetone, dithiocarbonic anhydride or their volatile organic solvents such as mixture.When using salad oil to make extraction agent, the collected salad oil reservoir that contains β-Hu Luobusu is a finished product, it is brown xanchromatic oily liquids, its content beta-carotene is less than 20%, and its composition comprises carotenoid, fat-soluble pigment, liposoluble vitamin (as vitamin A and vitamin-E) and other fat-soluble cpds.When with an organic solvent making extraction agent, after the extraction liquid heating evaporation can being concentrated, add or do not add ethanol or methyl alcohol, 0-10 ℃ leaves standstill and separates out the red-purple crystal, and content beta-carotene is greater than 90%; Also can directly in extraction liquid, add ethanol or methyl alcohol (extraction liquid: ethanol or methyl alcohol=1: 1-10), the β-Hu Luobusu precipitation is separated out, content beta-carotene is greater than 50%, its composition is β-Hu Luobusu stereoisomer mixture and a small amount of alpha-carotene etc., and product is red-purple ointment shape.
Because described salt algae liquid solution proportion through diluting after descends, the salt algae is very easily by sedimentation or centrifuging collection, can make that salt algae thickening equipment is corresponding to dwindle, simplify technology, reduces cost.Salt algae enriched material bursts through water is hypotonic, and after the washing for several times, resulting salt algae film preparation has been removed the enchylema composition, has saved drying or freeze thawing equipment, also needn't add tensio-active agent, helps later extraction and separating technology.Extraction process carries out under hypotonic condition, and extraction is abundant, convenient, solid-liquid separation is simple, can make more than the extraction rate reached to 90% of β-Hu Luobusu in the described salt algae.As≤the 3ppm of products obtained therefrom, Pb≤10ppm.
Embodiment 1: the salt algae is diluted mixing with isopyknic water in basin, separate solid-liquid with commercially available whizzer, obtain wet algae enriched material.Wet algae enriched material is burst with 10 times water is hypotonic, enchylema in the frustule is flowed out, centrifuge dehydration then, make the thylakoid membrane that is rich in β-Hu Luobusu of salt algae and cytolemma etc. be deposited in the bottom, get salt algae film preparation, (algae film: water: ratio sherwood oil) added entry and sherwood oil in 1: 5: 5 with described salt algae film preparation then, the stirring at room extraction is after 30 minutes, carrying out two in extractor is separated, the upper layer of extraction liquid layer adds 2 times of ethanol, carotene is separated out, then can obtain containing the brown xanchromatic ointment shape throw out of β-Hu Luobusu more than 50%.
Embodiment 2: the preparation of described salt algae film preparation such as embodiment 1, (algae film: water: ratio salad oil) added entry and salad oil in 1: 1: 2 then, in extractor, stir and extracted 2 hours, centrifugally then carry out two and be separated, then can obtain containing the pale brown look oily liquids of β-Hu Luobusu more than 1%.
Embodiment 3: salt algae liquid is diluted sedimentation in the rearmounted subsider with 10 times water, obtain wet algae enriched material.Press embodiment 1, water is hypotonic burst, wash after, the algae film preparation.Pack in the extractor, then in 1: 1: 1 (algae film: water: ratio adding sherwood oil sherwood oil), 50 ℃ were stirred after 30 minutes, leave standstill and carry out two and be separated, upper layer of extraction liquid is taken out rearmounted commercially available evaporator evaporation and is concentrated, put then under the 0-10 ℃ of condition and separate out the red-purple crystallization, contain β-Hu Luobusu more than 90%.

Claims (4)

1. the extracting method of salt algae β-Hu Luobusu, it is characterized in that raw material salt algae liquid in 1: 1-10 (salt algae liquid: ratio dilute with water water), reduce the density of solution, method by standing sedimentation or centrifugal settling, reclaim the salt algae, make that algae liquid concentrates, salinity reduces, smaller volume, obtain salt algae enriched material.Water is hypotonic again bursts for described salt algae enriched material, promptly in 1: (salt algae enriched material: ratio water) is mixed salt algae enriched material and water to 1-10, and carry out thermal agitation, the salt frustule is broken, discharge enchylema, after water washing, make red algae film preparation, described algae film preparation need suspend in water to keep the hypotonic state that bursts, extract with common extraction agent, the gained extraction liquid can be used as finished product, and also available lower alcohol is heavy separates out or concentrated post crystallization is separated out β-Hu Luobusu.
2. method according to claim 1, when it is characterized in that the algae film preparation being extracted with extraction agent, needing the water existence makes frustule be in state of rupture to keep hypotonic condition, by 1: 1-5: 1-10 (algae film preparation: water: extraction agent) algae film and water, extraction agent are mixed, extract by room temperature or heating.
3. method according to claim 1, it is characterized in that the extraction agent that uses can be salad oil, soya-bean oil, rape oil, cottonseed wet goods edible vegetable oil, can be organic solvents such as ether, sherwood oil, hexanaphthene, normal hexane, acetone, dithiocarbonic anhydride also, also can be their mixture.
4. method according to claim 1 is characterized in that extraction liquid is the product that contains less than 20% β-Hu Luobusu when using vegetables oil to make extraction agent; When with an organic solvent making extraction agent, can be in 1: (extraction agent: ratio lower alcohol) adds ethanol or methyl alcohol to 1-10, and the β-Hu Luobusu precipitation is separated out, and is the violet oil paste, and content beta-carotene is greater than 50%; Also can be directly with the extraction liquid evaporation concentration, add or do not add ethanol or methyl alcohol, the carotene crystallization is separated out under 0-10 ℃, its content beta-carotene is greater than 90%.
CN92107782A 1992-09-29 1992-09-29 Method of dunaliella collecting and beta-carotene extracting Expired - Fee Related CN1034730C (en)

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CN92107782A CN1034730C (en) 1992-09-29 1992-09-29 Method of dunaliella collecting and beta-carotene extracting

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
UA67742C2 (en) * 1997-05-02 2004-07-15 Дсм Іп Ассетс Б.В. A process for isolation of carotenoid crystals from microbial biomass
CN103951600A (en) * 2014-05-15 2014-07-30 中盐工程技术研究院有限公司 Method for extracting beta-carotene from dunaliella salina
CN106261059A (en) * 2015-06-12 2017-01-04 胡培芹 A kind of preparation method of salt alga powder
CN105017115A (en) * 2015-06-18 2015-11-04 中山鼎晟生物科技有限公司 Ultrasonic extraction method for beta-carotene in Dunaliella salina powder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1044277A (en) * 1990-01-25 1990-08-01 轻工业部制盐工业科学研究所 The extracting method of carotene and extract in the salt algae
JP4095066B2 (en) * 2002-12-04 2008-06-04 エムコア・コーポレイション Semiconductor structure of gallium nitride based semiconductor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1044277A (en) * 1990-01-25 1990-08-01 轻工业部制盐工业科学研究所 The extracting method of carotene and extract in the salt algae
JP4095066B2 (en) * 2002-12-04 2008-06-04 エムコア・コーポレイション Semiconductor structure of gallium nitride based semiconductor

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