CN108753621A - A method of based on molasses give up mash improve single needle algae oil and fat accumulation - Google Patents

A method of based on molasses give up mash improve single needle algae oil and fat accumulation Download PDF

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Publication number
CN108753621A
CN108753621A CN201810536914.8A CN201810536914A CN108753621A CN 108753621 A CN108753621 A CN 108753621A CN 201810536914 A CN201810536914 A CN 201810536914A CN 108753621 A CN108753621 A CN 108753621A
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molasses
mash
single needle
culture
needle algae
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余旭亚
李喜明
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Kunming University of Science and Technology
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    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N1/00Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
    • C12N1/12Unicellular algae; Culture media therefor
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N1/00Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
    • C12N1/38Chemical stimulation of growth or activity by addition of chemical compounds which are not essential growth factors; Stimulation of growth by removal of a chemical compound
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P7/00Preparation of oxygen-containing organic compounds
    • C12P7/64Fats; Fatty oils; Ester-type waxes; Higher fatty acids, i.e. having at least seven carbon atoms in an unbroken chain bound to a carboxyl group; Oxidised oils or fats
    • C12P7/6436Fatty acid esters
    • C12P7/6445Glycerides
    • C12P7/6463Glycerides obtained from glyceride producing microorganisms, e.g. single cell oil
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/10Biofuels, e.g. bio-diesel

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Abstract

The present invention discloses a kind of method for the mash raising single needle algae oil and fat accumulation that gives up based on molasses, belongs to biodiesel technology field.The method of the invention be by molasses give up mash dilution, as culture single needle algaeMonoraphidiumThe inducing culture of sp.FXY-10, adjusting pH value are 6.8-7.0, are dispensed, sterilizing;Cultured seed is inoculated into above-mentioned culture medium, the epiphysin of various concentration is then added, carries out illumination shaking flask culture;Frustule is collected by centrifugation daily, after freeze-drying, then grinding utilizes the grease in organic solvent extraction single needle algae, biodiesel is prepared.Operation is simple by the present invention, reduces production cost, and the useless mash of molasses can be utilized to effectively improve oil and fat accumulation under the action of derivant, while can also reduce the environmental pollution in the useless mash processing procedure of molasses.

Description

A method of based on molasses give up mash improve single needle algae oil and fat accumulation
Technical field
The present invention relates to it is a kind of based on molasses give up mash improve single needle algae oil and fat accumulation method, belong to biodiesel technology Field.
Background technology
Biodiesel is refined from vegetable and animals oils, it refers to oil crops such as soybean, rape etc., Wild oil plant and work The water plants such as Cheng Weizao grease and animal fat, food garbage oil etc. are that feedstock oil passes through transesterification or thermochemical processes system At the reproducibility diesel fuel instead of petrifaction diesel.Biodiesel is one kind of biomass energy, in physical property with Petrifaction diesel is close, but chemical composition is different.
The conventional method of biodiesel is prepared using microalgae, not only production cost is high, and fat content and lipid-producing are low, and And be difficult to apply to mass produce, change on the basis of the advantages such as the present invention has photosynthetic efficiency high in microalgae, and growth cycle is short Traditional microdisk electrode mode is become, has given up mash as basic culture medium using molasses, can both solve the useless mash sewage of molasses The problem of processing, and the nutritional ingredient culture microalgae in the useless mash of molasses can be utilized, while grease in microalgae can be improved again Accumulation.And after adding epiphysin in microalgae, further microalgae grease can be promoted to accumulate.
Invention content
The object of the present invention is to provide it is a kind of based on molasses give up mash joint epiphysin improve single needle algae oil and fat accumulation side Method, this method process is simple, and production cost is relatively low, specifically includes following steps:
(1)Prepare inducing culture:By molasses give up mash dilution, as culture single needle algaeMonoraphidium sp. FXY-10 Inducing culture, adjusting pH value be 6.8-7.0, dispense, sterilizing.
(2)Frustule is induced to accumulate grease:Cultured seed is inoculated into above-mentioned culture medium, various concentration is then added Epiphysin, carry out illumination shaking flask culture.
(3)Prepare biodiesel:Frustule is collected by centrifugation daily, after freeze-drying, then grinding utilizes organic solvent to extract single Grease in needle algae, is prepared biodiesel.
Preferably, step of the present invention(1)The useless mash of middle molasses dilutes 3200 times.
Preferably, in culture medium of the present invention epiphysin a concentration of 10-4~10-1μm ol/L, condition of culture are:Temperature 25 DEG C, intensity of illumination 3500lux, 150 r/min of shaking speed.
Preferably, step of the present invention(3)It is middle prepare biodiesel method be specially:By frustule medium centrifugal It collects, condition 3500r/min, centrifuges 10 min, and freeze-drying is centrifuged after being washed twice repeatedly with distilled water;Add freeze-dried algae powder Chloroform/methanol is used after 2 times of quality quarts sand grindings(2:1,v/v)Grease is extracted, repeats to collect extracting solution concentration after extracting 2 times, Said extracted grease, which adds sulfuric acid-methanol, to carry out esterification and is prepared biodiesel, and the volume ratio of sulfuric acid and methanol is 3:97.
The beneficial effects of the invention are as follows:
(1)The present invention utilizes epiphysin, reduces production cost;The useless mash of molasses realizes zero-emission, is conducive to environmental protection, will The culture of environmental pollution treatment and microalgae is combined together, and is turned waste into wealth.
(2)Compared with the control group, the fat content for adding epiphysin is increased to 52.27% to the present invention.
(3)Single needle algae can grow in the molasses for having added epiphysin give up mash culture medium well in the present invention, not only solve The process problem of the useless mash of molasses of having determined, while improving lipid-producing.
Description of the drawings
Fig. 1 is the variation diagram of various concentration epiphysin and the lower single needle algae oil fat content of amine acyl ester effect.
Specific implementation mode
Invention is further described in detail with reference to the drawings and specific embodiments, but the scope of the present invention is not limited to The content.
Comparative example 1
By molasses give up mash dilute 3200 times, add the epiphysin of 0mg/L, as culture single needle algae inducing culture, adjust PH value is between 6.8-7.0;121 DEG C of sterilizing 20min of high temperature and pressure, access single needle algae seed liquor, frustule initial inoculum is 1g/L, 25 DEG C, intensity of illumination 3500lux, shaking speed 150r/min of cultivation temperature carry out illumination shaking flask culture.
As a result:The control group fat content is 39.2%.
Comparative example 2
(1)Prepare inducing culture:By molasses give up mash dilute 3200 times, as single needle algaeMonoraphidium sp. FXY- 10 inducing culture, then be added amine acyl ester, adjust pH value between 6.8-7.0, packing, sterilising conditions be 121 DEG C, 20 min;Amine acyl ester concentration is respectively 100 μm of ol/L, 10 μm of ol/L, 1 μm of ol/L, 10-1μm ol/L, 10-2μmol/L。
(2)Frustule is induced to accumulate grease:It will utilize and foster cultured single needle algae of BG-11 are inoculated into above-mentioned culture Base carries out illumination shaking flask culture;Condition of culture is:25 DEG C of temperature, 3500 lux of intensity of illumination, 150 r/min of shaking speed.
(3)Prepare biodiesel:Frustule is collected by centrifugation daily, frustule medium centrifugal is collected, condition 3500 R/min centrifuges 10 min, and centrifuges freeze-drying after being washed twice repeatedly with distilled water;Addition 2 times of quality quarts sand of freeze-dried algae powder are ground Then mill uses the mixed solution of chloroform and methanol(Chloroform, methanol volume ratio are 2:1)Grease is extracted, repeats to collect after extracting 2 times Extracting solution concentrates, and the grease addition sulfuric acid-methanol of extraction carries out esterification and biodiesel, the volume of sulfuric acid and methanol is prepared Than being 3:97.
Fat content under different amine acyl ester (DA-6) concentration conditions of table 2
Embodiment 1
(1)Prepare inducing culture:By molasses give up mash dilute 3200 times, as single needle algaeMonoraphidium sp. FXY- 10 inducing culture, is then added epiphysin, adjusts pH value between 6.8-7.0, and packing, sterilising conditions be 121 DEG C, 20 min;Epiphysin concentration is respectively 10-1μmol/L、10-2μmol/L、10-3μmol/L、10-4μmol/L。
(2)Frustule is induced to accumulate grease:It will utilize and foster cultured single needle algae of BG-11 are inoculated into above-mentioned culture Base carries out illumination shaking flask culture;Condition of culture is:25 DEG C, intensity of illumination 3500lux of temperature, 150 r/min of shaking speed.
(3)Prepare biodiesel:Frustule is collected by centrifugation daily, frustule medium centrifugal is collected, condition 3500 R/min centrifuges 10 min, and centrifuges freeze-drying after being washed twice repeatedly with distilled water;Addition 2 times of quality quarts sand of freeze-dried algae powder are ground Then mill uses the mixed solution of chloroform and methanol(Chloroform, methanol volume ratio are 2:1)Grease is extracted, repeats to collect after extracting 2 times Extracting solution concentrates, and the grease addition sulfuric acid-methanol of extraction carries out esterification and biodiesel, the volume of sulfuric acid and methanol is prepared Than being 3:97.
Fat content under different epiphysin (MT) concentration conditions of table 1
The result shows that:Mash is given up as basic culture medium induction single needle algae accumulation grease with molasses, and addition external source epiphysin can carry The lipid-producing of high single needle algae, and adding external source amine acyl ester does not have remarkable result, when epiphysin a concentration of 10-3It is single when μm ol/L The fat content of needle algae improves 19.83% than control group;Illustrate that epiphysin is added in molasses give up mash can effectively improve single needle The oil and fat accumulation of algae.

Claims (4)

1. a kind of method for the mash raising single needle algae oil and fat accumulation that given up based on molasses, which is characterized in that specifically include following steps:
(1)Prepare inducing culture:By molasses give up mash dilution, as culture single needle algaeMonoraphidium sp. FXY-10 Inducing culture, adjusting pH value be 6.8-7.0, dispense, sterilizing;
(2)Frustule is induced to accumulate grease:Cultured seed is inoculated into above-mentioned culture medium, taking off for various concentration is then added Melanocyte carries out illumination shaking flask culture;
(3)Prepare biodiesel:Frustule is collected by centrifugation daily, after freeze-drying, then grinding utilizes organic solvent to extract single needle algae Interior grease, is prepared biodiesel.
2. the method for the mash raising single needle algae oil and fat accumulation according to claim 1 that given up based on molasses, it is characterised in that:Step Suddenly(1)The useless mash of middle molasses dilutes 3200 times.
3. the method for the mash raising single needle algae oil and fat accumulation according to claim 1 that given up based on molasses, it is characterised in that:Training Support a concentration of 10 of epiphysin in base-4~10-1μm ol/L, condition of culture are:25 DEG C, intensity of illumination 3500lux of temperature, shaking table turn 150 r/min of speed.
4. the method for the mash raising single needle algae oil and fat accumulation according to claim 1 that given up based on molasses, it is characterised in that:Institute State step(3)It is middle prepare biodiesel method be specially:Frustule medium centrifugal is collected, condition 3500r/min, from 10 min of the heart, and centrifuge freeze-drying after being washed twice repeatedly with distilled water;Chlorine is used after the 2 times of quality quarts sand grindings of addition freeze-dried algae powder Imitative/methanol extracts grease, repeats to collect extracting solution concentration after extracting 2 times, said extracted grease adds sulfuric acid-methanol and carries out esterification It is prepared biodiesel, the volume ratio of sulfuric acid and methanol is 3:97.
CN201810536914.8A 2018-05-30 2018-05-30 A method of based on molasses give up mash improve single needle algae oil and fat accumulation Pending CN108753621A (en)

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