CN105861323A - Beta-carotene-containing bacterial powder, microbial oil and oil suspension - Google Patents

Beta-carotene-containing bacterial powder, microbial oil and oil suspension Download PDF

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CN105861323A
CN105861323A CN201610276071.3A CN201610276071A CN105861323A CN 105861323 A CN105861323 A CN 105861323A CN 201610276071 A CN201610276071 A CN 201610276071A CN 105861323 A CN105861323 A CN 105861323A
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blakeslea trispora
beta carotene
cctcc
carotene
oil
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汪志明
李翔宇
余超
陆姝欢
周强
肖敏
张玉良
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Limited By Share Ltd Biotechnology (wuhan) Co Ltd
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Abstract

The invention provides beta-carotene-containing bacterial powder or microbial oil or oil suspension. Beta-carotene is obtained by fermenting a blakeslea trispora mutant strain. The beta-carotene-containing bacterial powder or microbial oil or oil suspension is characterized in that the blakeslea trispora mutant strain is preserved in the China Center For Type Culture Collection (CCTCC) on August 8, 2014, the preservation address is Wuhan University, Wuhan city, China, and the preservation numbers are blakeslea trispora BT7251(+) CCTCC M 2014378 and blakeslea trispora BT7603(-) CCTCC M 2014379. The beta-carotene with the high yield can be obtained by conventionally fermenting and culturing the blakeslea trispora mutant strain. Meanwhile, the whole fermentation technology is simple, convenient to control and beneficial for industrialized production.

Description

Bacterium powder, microbial oil and oil suspension containing beta carotene
Technical field
The present invention relates to bacterium powder, microbial oil and the oil suspension containing beta carotene.
Background technology
Beta carotene is the one in more than 500 kind of carrotene, is the precursor of vitamin A, also referred to as provitamin A, it Weak solution is orange-yellow to yellow.Beta carotene is widely present in plant, algae and fungi, but can not in animal and human body Synthesis carrotene, it is necessary to absorb from the external world.As food additives, beta carotene can play the work of pigment and nutrition fortifier With, beta carotene is powerful antioxidants simultaneously, has inhibition cancer cell propagation and improves the effects such as immunity of organisms.Exclusive Nutritive value and medicinal curative effect make carrotene be paid attention to by countries in the world medical circle and grocer.
The preparation method of beta carotene mainly includes following several at present: one, chemical synthesis, i.e. uses organic chemical industry former Material, by chemosynthesis reaction, Prof. Du Yucang beta carotene.Chemical synthesis production carrotene technical sophistication, difficulty are big, alive Property low, strong toxicity, it is impossible to be absorbed by the body completely, and to human body produce a certain degree of toxic and side effect, many countries limit Use.Two, plant extraction method, i.e. from plant material, such as uses organic solvent in the plant such as carrot, as petroleum ether, chloroform, The extraction beta carotene such as acetone, ether, ethanol.But, use the method to need to consume substantial amounts of raw material, and extract yield The highest, it is difficult to be adapted to large-scale industrial production.Three, biological fermentation process, i.e. utilizes microbial culture technique, by micro-life The cultivation of thing, utilizes microorganism at its internal synthesis beta carotene, then isolated beta carotene in microbial body.Should The production cost of method is low, and beta carotene product purity is high, and the rate of recovery is high, up to more than 90%.Therefore, microorganism is used to send out Ferment method produces beta carotene and has broad application prospects.Particularly, with Blakeslea trispora bacterial strain fermenting and producing β mono-carrotene, The security of its technique is high, with low cost, and colorability is strong, therefore suffers from the especially favor of production firm.
Number of patent application be 201210208891.0 Chinese patent application disclose one and utilize trispore Bruce mould The method of beta carotene is prepared in fermentation, including by trispore Bruce mould ATCC14271 (+) and ATCC14272 (-) activation after, Through seed culture, send out than accessing in fermentation medium by certain inoculum concentration and inoculation under preferred technological condition for fermentation Ferment, finally gives the mycelium that content beta-carotene is higher.But, the beta carotene yield using this bacterial classification to prepare is relatively low, Maximum output is less than 1.3g/L.
Summary of the invention
The main object of the present invention is to provide a kind of bacterium powder, microbial oil and oil suspension containing beta carotene.
For reaching above-mentioned purpose, the present invention provides the bacterium powder containing beta carotene, and described beta carotene is by three spore Bradleys The fermentation of mould mutant strain is obtained, it is characterised in that: described Blakeslea trispora mutant strain is preserved in China's allusion quotation on August 8th, 2014 Type culture collection center (CCTCC), preservation address is, China, Wuhan, Wuhan University, deposit number is: three spore cloth Laplaces are mould Blakeslea trispora BT7251(+)CCTCCM 2014378;Three spore cloth Laplace mould Blakeslea trispora BT7603(-)CCTCC M 2014379;Or
Containing the microbial oil of beta carotene, described beta carotene is obtained by the fermentation of Blakeslea trispora mutant strain, its It is characterised by: described Blakeslea trispora mutant strain is preserved in China typical culture collection center on August 8th, 2014 (CCTCC), preservation address is, China, Wuhan, Wuhan University, deposit number is: the three spore mould Blakeslea of cloth Laplace trispora BT7251(+)CCTCC M 2014378;Three spore cloth Laplace mould Blakeslea trispora BT7603 (-) CCTCC M 2014379.Or;
Containing the oil suspension of beta carotene, described beta carotene is obtained by the fermentation of Blakeslea trispora mutant strain, and it is special Levy and be: described Blakeslea trispora mutant strain is preserved in China typical culture collection center (CCTCC) on August 8th, 2014, Preservation address is, China, Wuhan, Wuhan University, deposit number is: three spore cloth Laplace mould Blakeslea trispora BT7251(+)CCTCC M 2014378;Three spore cloth Laplace mould Blakeslea trispora BT7603 (-) CCTCC M 2014379。
The beneficial effects of the present invention is: after Blakeslea trispora mutant strain carries out the fermented and cultured of routine, can obtain higher The beta carotene of yield.Meanwhile, whole zymotechnique is simple, it is simple to control, beneficially industrialized production.
Detailed description of the invention
In order to be more clearly understood that the technology contents of the present invention, describe in detail especially exemplified by following example.
The selection of Blakeslea trispora mutant strain
1) take the positive bacterium of commercially available Blakeslea trispora (deposit number is: CCTCCAF97006 (+)) and Blakeslea trispora bear bacterium (deposit number is: CCTCCAF96002 (-)) it is starting strain.
2) two strain starting strains are cultivated 5 days to spore maturation.
3) obtain pure spore liquid by gauze or Filter paper filtering, spore liquid is injected into sterile petri dish, through sterile wind Air-dry, become bacterial plaque.By in aseptic for the culture dish containing bacterial plaque immigration high energy particle beam implanter, inject through high energy ion beam and lure Become.
4) bacterial plaque of positive and negative bacterial strain is eluted with sterilized water respectively, it is thus achieved that positive bacterium and negative bacterium respectively according to man-to-man Relation is inoculated in distance center 1/3 distance on potato dextrose agar (PDA) culture medium flat plate, in 27 DEG C, humidity The constant incubator of 50% is cultivated 5 days, and now visible positive and negative bacterial strain stolon combines in the center of flat board, produces Raw red material.
5) with the card punch of 30mm, potato dextrose agar (PDA) culture medium of plate center is taken out, be placed in glass Smashing to pieces in test tube, the ethyl acetate adding 5ml soaks, until the redness of agar takes off to the greatest extent, takes upper strata ethyl acetate detection pigment and exists Light absorption value at 455nm.
6) from the higher sample of light absorption value, select 30 flat boards, carry out second and take turns high energy ion beam injection mutagenesis, then carry out The operation of the 4th and the 5th step, obtains 3 flat boards that light absorption value is higher.
7) obtaining the three positive and negative bacterial strains of strain from 3 flat boards, the 3 positive and negative bacterial strains of strain carry out liquid submerged culture, according to shaking flask The result of fermented and cultured, the positive and negative bacterial strain that screening content beta-carotene is the highest, it is thus achieved that the Blakeslea trispora mutant strain of the present invention. This Blakeslea trispora bacterial strain is preserved in China typical culture collection center (CCTCC) on August 8th, 2014, and preservation address is, China, Wuhan, Wuhan University, deposit number: three spore cloth Laplace mould Blakeslea trispora BT7251 (+) CCTCC M 2014378;Three spore cloth Laplace mould Blakeslea trispora BT7603 (-) CCTCC M 2014379.
8) it has following physio-biochemical characteristics:
1, positive and negative bacteria growing is in PDA slant medium, after growing 2 days, can form white in media surface at 27 DEG C Bacterium colony, and enter exponential phase, positive strain mycelia is light yellow, and negative strain mycelia foresythia, within the 4th day, mycelia is covered with whole inclined-plane.
2, sporogenesis was in the 3rd day, within the 4th day, was covered with whole inclined-plane;Positive strain spore is black, the most loose, and negative bacterium spore is less, The most intensive.
3, in the culture medium cultivated, available carbon source is: glucose, sucrose, cornstarch etc..Available nitrogen Source is mainly dusty yeast, yeast extract, yeast leaching powder, soybean cake powder or corn flour.
The application of Blakeslea trispora bacterial strain of the present invention
Hereinafter all utilize the Blakeslea trispora bacterial strain of the present invention as initial bacterial classification, use different preparation methods to prepare Beta carotene.
Method 1
(1) actication of culture: under gnotobasis, positive and negative for Blakeslea trispora bacterial strain is inoculated in inclined-plane PDA culture medium respectively, It is placed in incubator, cultivates 5d, after the positive and negative bacterial strain of Blakeslea trispora grows spore respectively, aseptically, by nothing for 27 DEG C Slant medium miospore is scraped by bacterium physiological saline, and is configured to uniform spore suspension, makes positive and negative bacterial strain spore hang The concentration of liquid respectively reaches: 103~106Individual spore/mL, 103~106Individual spore/mL.
(2) seed culture: positive and negative bacterial strain is inoculated in seed culture medium respectively in the way of spore suspension, seed culture Base is contained in the triangular flask of 1000mL, liquid amount 100mL, and cultivation temperature is 27 DEG C, rotating speed 220r/min, when positive and negative bacterium is cultivated Between be 18 hours, obtain Blakeslea trispora positive and negative bacterial strain seed liquor.
(3) seed expands cultivation: the volume of final fermentation tank is 2m3, selection volume is the seeding tank of 10L, 100L successively Expand cultivate seed liquor, in seeding tank, culture medium loading amount is 60% (volume ratio), by the shake-flask seed zymotic fluid of step (2) according to Positive and negative bacterial strain ratio is that the ratio of 1:10 is inoculated in seeding tank and carries out seed and expand and cultivate, and wherein seed culture medium is: carbon source For glucose;Nitrogen source is dusty yeast and corn flour;Inorganic salts are potassium dihydrogen phosphate, magnesium sulfate;Vegetable oil is: corn oil.
(4) fermented and cultured: in seeding tank, bacterium is dense reach 20% after, be linked into equipped with 1.2m by culture transferring pipeline3Fermentation training Support the 2m of base3Fermentation tank is cultivated, fermentation medium with seed culture medium prescription, inoculum concentration 5% (volume ratio), temperature: 27℃±1℃;Rotating speed: 200r/min;Air quantity: 2vvm;Dissolved oxygen controls: more than 20%;Cycle: 120h;Tank pressure: 0.12Mpa.pH Being adjusted to 6.8 by NaOH, before 72, stream adds the vegetable oil of 40g/L.
(5) detection.
A, standard curve making
Take 10mg beta carotene standard items, be dissolved in 1L ethyl acetate, make mother liquor.Take respectively 2.5ml, 5ml, 7.5ml, 10ml, 12.5ml are settled to 25ml.Measure beta carotene each concentration light absorption value 455nm at, according to light absorption value with The concentration of beta carotene is calibration curve y=ax+b (x unit is mg/L), R2=0.999.
B, fermentation broth sample process and detection
A. v will be taken1ML zymotic fluid filtered through gauze also press dry with tablet press machine, obtains wet thallus, weighs wet thallus weight in wet base, note Record weight ω 1.Calculate thalline weight in wet base concentration c1(g/L)=1000*w1/v1
B. weigh wet thallus 0.02-0.03 gram, weigh and record weight w2(g)。
C. the wet thallus after weighing is placed in homogenizer, in homogenizer add 3ml ethyl acetate milling and extracting until Till dreg is colourless.
D. extract is moved in 25 milliliters of volumetric flasks, be settled to scale with ethyl acetate and shake up.
E. draw 1 milliliter of above-mentioned solution with 1 milliliter of fat tripe suction pipe, be transferred in 10 milliliters of volumetric flasks, fixed with ethyl acetate Appearance to scale shakes up.
F. at 454nm, sample absorbance y is detected with visible spectrophotometer1
G. the content of beta carotene in ethyl acetate solution is calculated according to light absorption value and calibration curve.
x1(mg/L)=(y1-b)/a
H. beta carotene fermentation yield computing formula is: P (g/L)=x1*10*0.025*c1/w2/1000。
If i. without step e, then yield formula is P (g/L)=x1*0.025*c1/w2/1000。
Finally recording beta carotene fermentation yield is 3.2g/L.
Method 2
(1) actication of culture: under gnotobasis, positive and negative for Blakeslea trispora bacterial strain is inoculated in inclined-plane PDA culture medium respectively, It is placed in incubator, cultivates 5d, after the positive and negative bacterial strain of Blakeslea trispora grows spore respectively, aseptically, by nothing for 27 DEG C Slant medium miospore is scraped by bacterium physiological saline, and is configured to uniform spore suspension, makes positive and negative bacterial strain spore hang The concentration of liquid respectively reaches: 103~106Individual spore/mL, 103~106Individual spore/mL.
(2) seed culture: positive and negative bacterial strain is inoculated in seed culture medium respectively in the way of spore suspension, seed culture Base is contained in the triangular flask of 1000mL, liquid amount 100mL, and cultivation temperature is 27 DEG C, rotating speed 220r/min, when positive and negative bacterium is cultivated Between be 18 hours, obtain Blakeslea trispora positive and negative bacterial strain seed liquor.
(3) seed expands cultivation: the volume of final fermentation tank is 12m3, selecting volume successively is 10L, 100L, 2m3Kind Sub-tank expands cultivates seed liquor, and in seeding tank, culture medium loading amount is 60% (volume ratio), by the shake-flask seed zymotic fluid of step (2) Being inoculated in seeding tank according to the ratio that positive and negative bacterial strain ratio is 1:15 and carry out seed expansion cultivation, wherein seed culture medium is: Carbon source is glucose;Nitrogen source is yeast leaching powder and corn flour;Inorganic salts are potassium dihydrogen phosphate, magnesium sulfate;Vegetable oil is: cottonseed Oil.
(4) fermented and cultured: in seeding tank, bacterium is dense reach 20% after, be linked into equipped with 7m by culture transferring pipeline3Fermented and cultured The 12m of base3Fermentation tank is cultivated, fermentation medium with seed culture medium prescription, inoculum concentration 15% (volume ratio), temperature: 27℃±1℃;Rotating speed: 200r/min;Air quantity: 2vvm;Dissolved oxygen controls: more than 25%;Cycle: 120h;Tank pressure: 0.12Mpa.Logical Crossing NaOH and be adjusted to 6.8, before 72, stream adds the vegetable oil of 40g/L.
(5) detection.
A, standard curve making
Take 10mg beta carotene standard items, be dissolved in 1L ethyl acetate, make mother liquor.Take respectively 2.5ml, 5ml, 7.5ml, 10ml, 12.5ml are settled to 25ml.Measure beta carotene each concentration light absorption value 455nm at, according to light absorption value with The concentration of beta carotene is calibration curve y=ax+b (x unit is mg/L), R2=0.999.
B, fermentation broth sample process and detection
A. v will be taken1ML zymotic fluid filtered through gauze also press dry with tablet press machine, obtains wet thallus, weighs wet thallus weight in wet base, note Record weight ω 1.Calculate thalline weight in wet base concentration c1(g/L)=1000*w1/v1
B. weigh wet thallus 0.02-0.03 gram, weigh and record weight w2(g)。
C. the wet thallus after weighing is placed in homogenizer, in homogenizer add 3ml ethyl acetate milling and extracting until Till dreg is colourless.
D. extract is moved in 25 milliliters of volumetric flasks, be settled to scale with ethyl acetate and shake up.
E. draw 1 milliliter of above-mentioned solution with 1 milliliter of fat tripe suction pipe, be transferred in 10 milliliters of volumetric flasks, fixed with ethyl acetate Appearance to scale shakes up.
F. at 454nm, sample absorbance y is detected with visible spectrophotometer1
G. the content of beta carotene in ethyl acetate solution is calculated according to light absorption value and calibration curve.
x1(mg/L)=(y1-b)/a
H. beta carotene fermentation yield computing formula is: P (g/L)=x1*10*0.025*c1/w2/1000。
If i. without step e, then yield formula is P (g/L)=x1*0.025*c1/w2/1000.Finally record β-Hu Luo Bu Su fermentation yield is 3.5g/L.
Method 3
(1) actication of culture;Under gnotobasis, positive and negative for Blakeslea trispora bacterial strain is inoculated in inclined-plane PDA culture medium respectively, It is placed in incubator, cultivates 5d, after the positive and negative bacterial strain of Blakeslea trispora grows spore respectively, aseptically, by nothing for 27 DEG C Slant medium miospore is scraped by bacterium physiological saline, and is configured to uniform spore suspension, makes positive and negative bacterial strain spore hang The concentration of liquid respectively reaches: 103~106Individual spore/mL, 103~106Individual spore/mL.
(2) seed culture;Positive and negative bacterial strain is inoculated in seed culture medium respectively in the way of spore suspension, seed culture Base is contained in the triangular flask of 1000mL, liquid amount 100mL, and cultivation temperature is 27 DEG C, rotating speed 220r/min, when positive and negative bacterium is cultivated Between be 18 hours, obtain Blakeslea trispora positive and negative bacterial strain seed liquor.
(3) seed expands cultivation;The volume of final fermentation tank is 45m3, selecting volume successively is 10L, 100L, 2m3, 12m3 Seeding tank expand cultivate seed liquor, in seeding tank, culture medium loading amount is 60% (volume ratio), is sent out by the shake-flask seed of step (2) Ferment liquid is inoculated in seeding tank according to the ratio that positive and negative bacterial strain ratio is 1:20 and carries out seed expansion cultivation, wherein seed culture Base is: carbon source is glucose;Nitrogen source is dusty yeast and corn flour;Inorganic salts are potassium dihydrogen phosphate, magnesium sulfate;Vegetable oil is: hair Soya-bean oil.
(4) fermented and cultured;In seeding tank, bacterium is dense reach 20% after, be linked into equipped with 25m by culture transferring pipeline3Fermented and cultured The 50m of base3Fermentation tank is cultivated, fermentation medium with seed culture medium prescription, inoculum concentration 20% (volume ratio), temperature: 27℃±1℃;Rotating speed: 200r/min;Air quantity: 2vvm;Dissolved oxygen controls: more than 30%;Cycle: 120h;Tank pressure: 0.12Mpa.Logical Crossing NaOH and be adjusted to 6.8, before 72, stream adds the vegetable oil of 40g/L.
(5) detection:
A, standard curve making
Take 10mg beta carotene standard items, be dissolved in 1L ethyl acetate, make mother liquor.Take respectively 2.5ml, 5ml, 7.5ml, 10ml, 12.5ml are settled to 25ml.Measure beta carotene each concentration light absorption value 455nm at, according to light absorption value with The concentration of beta carotene is calibration curve y=ax+b (x unit is mg/L), R2=0.999.
B, fermentation broth sample process and detection
A. v will be taken1ML zymotic fluid filtered through gauze also press dry with tablet press machine, obtains wet thallus, weighs wet thallus weight in wet base, note Record weight ω 1.Calculate thalline weight in wet base concentration c1(g/L)=1000*w1/v1
B. weigh wet thallus 0.02-0.03 gram, weigh and record weight w2(g)。
C. the wet thallus after weighing is placed in homogenizer, in homogenizer add 3ml ethyl acetate milling and extracting until Till dreg is colourless.
D. extract is moved in 25 milliliters of volumetric flasks, be settled to scale with ethyl acetate and shake up.
E. draw 1 milliliter of above-mentioned solution with 1 milliliter of fat tripe suction pipe, be transferred in 10 milliliters of volumetric flasks, fixed with ethyl acetate Appearance to scale shakes up.
F. at 454nm, sample absorbance y is detected with visible spectrophotometer1
G. the content of beta carotene in ethyl acetate solution is calculated according to light absorption value and calibration curve.
x1(mg/L)=(y1-b)/a。
H. beta carotene fermentation yield computing formula is: P (g/L)=x1*10*0.025*c1/w2/1000。
If i. without step e, then yield formula is P (g/L)=x1*0.025*c1/w2/1000.Finally record β-Hu Luo Bu Su fermentation yield: 4.6g/L.
Method 4
(1) actication of culture: under gnotobasis, positive and negative for Blakeslea trispora bacterial strain is inoculated in inclined-plane PDA culture medium respectively, It is placed in incubator, cultivates 5d, after the positive and negative bacterial strain of Blakeslea trispora grows spore respectively, aseptically, by nothing for 27 DEG C Slant medium miospore is scraped by bacterium physiological saline, and is configured to uniform spore suspension, makes positive and negative bacterial strain spore hang The concentration of liquid respectively reaches: 103~106Individual spore/mL, 103~106Individual spore/mL.
(2) seed culture: positive and negative bacterial strain is inoculated in seed culture medium respectively in the way of spore suspension, seed culture Base is contained in the triangular flask of 1000mL, liquid amount 100mL, and cultivation temperature is 27 DEG C, rotating speed 220r/min, when positive and negative bacterium is cultivated Between be 18 hours, obtain Blakeslea trispora positive and negative bacterial strain seed liquor.
(3) seed expands cultivation: the volume of final fermentation tank is 200m3, selecting volume successively is 10L, 100L, 5m3, 50m3Seeding tank expand cultivate seed liquor, in seeding tank, culture medium loading amount is 60% (volume ratio), by the shaking flask kind of step (2) Sub-zymotic fluid is inoculated in seeding tank according to the ratio that positive and negative bacterial strain ratio is 1:25 and carries out seed expansion cultivation, wherein seed Culture medium is: carbon source is glucose;Nitrogen source is dusty yeast and beancake powder;Inorganic salts are potassium dihydrogen phosphate, magnesium sulfate;Vegetable oil For: hair cotton oil.
(4) fermented and cultured: in seeding tank, bacterium is dense reach 20% after, be linked into equipped with 120m by culture transferring pipeline3Fermentation training Support the 200m of base3Cultivating in fermentation tank, fermentation medium is with seed culture medium prescription, inoculum concentration 25% (volume ratio), temperature Degree: 27 DEG C ± 1 DEG C;Rotating speed: 200r/min;Air quantity: 2vvm;Dissolved oxygen controls: more than 35%;Cycle: 120h;Tank pressure: 0.12Mpa.Being adjusted to 6.8 by NaOH, before 72, stream adds the vegetable oil of 40g/L.
(5) detection:
A, standard curve making
Take 10mg beta carotene standard items, be dissolved in 1L ethyl acetate, make mother liquor.Take respectively 2.5ml, 5ml, 7.5ml, 10ml, 12.5ml are settled to 25ml.Measure beta carotene each concentration light absorption value 455nm at, according to light absorption value with The concentration of beta carotene is calibration curve y=ax+b (x unit is mg/L), R2=0.999.
B, fermentation broth sample process and detection
A. v will be taken1ML zymotic fluid filtered through gauze also press dry with tablet press machine, obtains wet thallus, weighs wet thallus weight in wet base, note Record weight ω 1.Calculate thalline weight in wet base concentration c1(g/L)=1000*w1/v1
B. weigh wet thallus 0.02-0.03 gram, weigh and record weight w2(g)。
C. the wet thallus after weighing is placed in homogenizer, in homogenizer add 3ml ethyl acetate milling and extracting until Till dreg is colourless.
D. extract is moved in 25 milliliters of volumetric flasks, be settled to scale with ethyl acetate and shake up.
E. draw 1 milliliter of above-mentioned solution with 1 milliliter of fat tripe suction pipe, be transferred in 10 milliliters of volumetric flasks, fixed with ethyl acetate Appearance to scale shakes up.
F. at 454nm, sample absorbance y is detected with visible spectrophotometer1
G. the content of beta carotene in ethyl acetate solution is calculated according to light absorption value and calibration curve.
x1(mg/L)=(y1-b)/a
H. beta carotene fermentation yield computing formula is: P (g/L)=x1*10*0.025*c1/w2/1000。
If i. without step e, then yield formula is P (g/L)=x1*0.025*c1/w2/1000.Finally record β-Hu Luo Bu Su fermentation yield: 5.2g/L.
As can be seen from the above embodiments, Blakeslea trispora of the present invention positive and negative bacterial strain mutant strain is used to prepare β-carrot Element, its technique is simple, beta carotene yield is high, and is convenient for industrialized production.
The preparation bacterium powder containing beta carotene.
By the beta carotene fermentation liquor obtained by any of the above method is centrifugal or sheet frame carries out separation of solid and liquid, obtain wet Thalline.Use the mode of centrifugal spray to be dried according to following parameter and i.e. obtain beta carotene bacterium powder.
Rotary speed rpm Charging rate kg/h EAT DEG C Leaving air temp DEG C Air quantity m3/h
4000 70 190 80 3300
The preparation microbial oil containing beta carotene.
By the beta carotene fermentation liquor obtained by any of the above method is centrifugal or sheet frame carries out separation of solid and liquid, obtain wet Thalline, adds the absolute ethyl alcohol of 1:10 (m/v), with broken 1 hour of colloid mill circulation after mixing, is filtrated to get ethanol filtrate and breaks Broken wet thallus.Broken wet thallus adds the ethyl acetate of 1:10 (m/v), extraction three times under 55 degrees Celsius, each 1 hour.Every time It is filtrated to get solvent phase and filter residue.Collect solvent phase, after vacuum desolvation, obtain the microbial oil containing beta carotene.
The preparation crystal containing beta carotene.
By the aforementioned prepared microbial oil containing beta carotene adds the ethyl acetate of 1:1 (m/v), at 5 degrees Celsius Under be slowly stirred crystallization 4 hours, filter, obtain containing beta carotene coarse crystal.Further by vacuum drying desolvation, Obtain containing beta carotene crystal finished product.
The preparation oil suspension containing beta carotene.
Aforementioned prepared beta carotene crystal finished product according to target weight ratio (such as 30%) is mixed with sunflower oil, takes out Vacuum, is heated to 150 degrees Celsius, stirs 10 minutes, and after beta carotene melts and mixes, fast cooling is to room temperature.I.e. Prepare beta carotene oil suspension.
The preparation microcapsules containing beta carotene.
First, wall material solution is obtained according to following formula through the cutter shearing of 3500rpm.
Raw material Weight kg
Converted starch 30
Corn syrup solid 25
Maltodextrin 25
Ascorbyl palmitate 2
Vitamin E 2
Pure water 90
Then, limit sheared edge add the aforementioned prepared microbial oil 16kg containing beta carotene, after having added Continue under the rotating speed of 8000rpm to shear 10min.After shearing terminates, carrying out homogeneous under 40MPa, the homogenizing fluid obtained is following Under the conditions of carry out press spray and i.e. can get the microcapsules of beta carotene.
Atomisation pressure MPa Charging rate kg/h EAT DEG C Leaving air temp DEG C Air quantity m3/h
10 100 220 90 5000
The preparation fatty powder containing beta carotene.
First, the aforementioned prepared microbial oil 16kg containing beta carotene is used at normal temperatures with DHA algal oil 10kg Stirring 100rpm mixing 10min, obtains compound lard.
Then, wall material solution is obtained according to following formula through the cutter shearing of 4500rpm.
Then, limit sheared edge add the aforementioned prepared miscella 26kg containing beta carotene and DHA, after having added Continue under the rotating speed of 10000rpm to shear 15min.After shearing terminates, carrying out homogeneous under 40MPa, the homogenizing fluid obtained is following Under the conditions of be centrifuged spraying and i.e. can get the mixing-in fat powder of beta carotene and DHA.
Rotary speed rpm Charging rate kg/h EAT DEG C Leaving air temp DEG C Air quantity m3/h
5000 90 200 85 4500

Claims (3)

1. containing the bacterium powder of beta carotene, described beta carotene is obtained by the fermentation of Blakeslea trispora mutant strain, and its feature exists In: described Blakeslea trispora mutant strain is preserved in China typical culture collection center (CCTCC), preservation on August 8th, 2014 Address is, China, Wuhan, Wuhan University, and deposit number is: Blakeslea trispora BT7251 (+) CCTCC M 2014378;Three The mould BT7603 of spore Bradley (-) CCTCC M 2014379.
2. containing the microbial oil of beta carotene, described beta carotene is obtained by the fermentation of Blakeslea trispora mutant strain, and it is special Levy and be: described Blakeslea trispora mutant strain is preserved in China typical culture collection center (CCTCC) on August 8th, 2014, Preservation address is, China, Wuhan, Wuhan University, and deposit number is: Blakeslea trispora BT7251 (+) CCTCC M 2014378;Blakeslea trispora BT7603 (-) CCTCC M 2014379.
3. containing the oil suspension of beta carotene, described beta carotene is obtained by the fermentation of Blakeslea trispora mutant strain, its feature It is: described Blakeslea trispora mutant strain is preserved in China typical culture collection center (CCTCC) on August 8th, 2014, protects Address, Tibetan is, China, Wuhan, Wuhan University, and deposit number is: Blakeslea trispora BT7251 (+) CCTCC M 2014378; Blakeslea trispora BT7603 (-) CCTCC M 2014379.
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107827798A (en) * 2017-11-21 2018-03-23 嘉必优生物技术(武汉)股份有限公司 A kind of bata-carotene and preparation method thereof, application
CN107827799A (en) * 2017-11-21 2018-03-23 嘉必优生物技术(武汉)股份有限公司 A kind of bata-carotene and preparation method thereof, application
CN108703260A (en) * 2018-07-16 2018-10-26 嘉必优生物技术(武汉)股份有限公司 A kind of beta carotene bacterium powder and preparation method thereof
CN109456903A (en) * 2018-12-29 2019-03-12 嘉必优生物技术(武汉)股份有限公司 Selenium-rich richness carotenoid trispore Bruce mould, fermentative carotenoid product and fermentation process
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Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105506048B (en) * 2015-12-31 2019-06-21 内蒙古金达威药业有限公司 A kind of fermentation process preparing beta carotene using Blakeslea trispora
CN106278977A (en) * 2016-08-09 2017-01-04 嘉必优生物技术(武汉)股份有限公司 The method preparing bata-carotene crystal
CN106278976A (en) * 2016-08-09 2017-01-04 嘉必优生物技术(武汉)股份有限公司 The method preparing bata-carotene crystal
CN106278975A (en) * 2016-08-09 2017-01-04 嘉必优生物技术(武汉)股份有限公司 The method preparing bata-carotene crystal
CN106278978A (en) * 2016-08-09 2017-01-04 嘉必优生物技术(武汉)股份有限公司 The method preparing bata-carotene crystal
CN107604036B (en) * 2017-09-22 2020-10-02 嘉必优生物技术(武汉)股份有限公司 Method for preparing beta-carotene and beta-carotene product
CN109536558B (en) * 2017-09-22 2021-11-19 嘉必优生物技术(武汉)股份有限公司 Process for preparing beta-carotene
CN108559768B (en) * 2018-01-11 2021-07-09 嘉必优生物技术(武汉)股份有限公司 Screening method and application of microorganisms containing MVA and/or MEP metabolic pathways
CN111690541B (en) * 2019-03-13 2023-04-25 浙江创新生物有限公司 Paired natural beta-carotene high-yield strain, and preparation method and application thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1193048A (en) * 1998-03-23 1998-09-16 江苏省微生物研究所 Method for producing beta-carotene by fermentation
CN102787158A (en) * 2011-05-20 2012-11-21 浙江医药股份有限公司新昌制药厂 Method for producing natural beta-carotene by fermentation and application
CN103911288A (en) * 2013-01-08 2014-07-09 丰益(上海)生物技术研发中心有限公司 Method for preconcentration and wall breaking and extraction of microorganism oil

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0129228B1 (en) * 1994-04-01 1998-04-09 구자홍 Automatic cooking control method & device of microwave
DE10300649A1 (en) * 2003-01-09 2004-07-22 Basf Ag Process for the production of ketocarotenoids by cultivating genetically modified organisms
CN100423652C (en) * 2003-12-03 2008-10-08 广州优宝工业有限公司 Natural beta-carotene microcapsule and method for making same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1193048A (en) * 1998-03-23 1998-09-16 江苏省微生物研究所 Method for producing beta-carotene by fermentation
CN102787158A (en) * 2011-05-20 2012-11-21 浙江医药股份有限公司新昌制药厂 Method for producing natural beta-carotene by fermentation and application
CN103911288A (en) * 2013-01-08 2014-07-09 丰益(上海)生物技术研发中心有限公司 Method for preconcentration and wall breaking and extraction of microorganism oil

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
李建东: "β-胡萝卜素微胶囊化工艺研究", 《万方》 *
谭新国 等: "三孢布拉霉发酵生产β-胡萝卜素", 《中南民族学院学报(自然科学版)》 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107827798A (en) * 2017-11-21 2018-03-23 嘉必优生物技术(武汉)股份有限公司 A kind of bata-carotene and preparation method thereof, application
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CN107827798B (en) * 2017-11-21 2020-05-08 嘉必优生物技术(武汉)股份有限公司 β -carotene and preparation method and application thereof
CN107827799B (en) * 2017-11-21 2020-09-01 嘉必优生物技术(武汉)股份有限公司 Beta-carotene and preparation method and application thereof
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CN116144510B (en) * 2023-04-06 2024-06-07 中国海洋大学 Aureobasidium pullulans and application thereof in improving beta-carotene content by fermentation

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