CN104263675A - Preparation technique of Bacillus polymyxa viable bacterium preparation - Google Patents
Preparation technique of Bacillus polymyxa viable bacterium preparation Download PDFInfo
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- CN104263675A CN104263675A CN201410436901.5A CN201410436901A CN104263675A CN 104263675 A CN104263675 A CN 104263675A CN 201410436901 A CN201410436901 A CN 201410436901A CN 104263675 A CN104263675 A CN 104263675A
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Abstract
The invention relates to a preparation technique of a Bacillus polymyxa viable bacterium preparation, which comprises the following steps: after carrying out primary and secondary seed amplification culture on Bacillus polymyxa, inoculating in a fermentation culture medium, and culturing, wherein a carbon source is supplemented in a fed-batch mode in the fermentation process to enhance the quantity and conversion rate of bacillus, thereby obviously enhancing the specific yield and lowering the unit cost; after finishing the fermentation, concentrating the fermentation liquid by using a vacuum film concentrator, so that soluble synergistic substances, growth promoting substances and antibacterial active substances in the fermentation liquid can be effectively recovered; carrying out drying and granulation on the concentrated with a multistage low-temperature spray fluidized drying apparatus, separating the granules, trapping fine powder with a cyclone separator, and returning for granulation to obtain the Bacillus polymyxa product, wherein every gram of bacterium powder has not less than 1.5*10<10> CFU; and carrying out tail gas treatment, and discharging the tail gas after reaching the standard. The technique can maximally maintain effective substances in the fermentation liquid, has the advantages of high product quality, equipment utilization rate and high biological activity retentivity, can discharge the wastewater after reaching the standard, and can implement large-scale industrialized production.
Description
Technical field
The present invention relates to a kind of preparation technology of bacillus polymyxa active bacteria formulation.
Background technology
Paenibacillus polymyxa (Paenibacillus polymyxa) is the gram positive bacterium that Bacillaceae (Bacillaceae) series bacillus belongs to (Paenibacillus), is putting under before series bacillus belongs to (Paenibacillus) also known as Bacillus polymyxa.The cell of Paenibacillus polymyxa (Paenibacillus polymyxa) is shaft-like, (0.5-2.5) μm X (1.2 ~ 10.0) μm, and G+C content is 40% ~ 50%; Utilize peritrichous to move, produce ellipse gemma expanding in sporocyst; The most suitable growth pH is 7, and optimum temperuture is 28 ~ 30 DEG C; Amphimicrobian, decomposition glucose and other carbohydrates produce acid, and aerogenesis sometimes, without soluble pigment on nutrient agar medium, has a extensive future.
Tradition agricultural chemicals and the excessive use of chemical fertilizer cause a lot of phytopathy worm to develop immunity to drugs, and cause the vicious cycle of ecotope, and therefore efficiently, the microbial pesticide of safety and biological chemical fertilizer more and more receive the concern of people.And Paenibacillus polymyxa can secrete a large amount of active substances, there is inhibit activities to many bacteriums and fungi, the resistance against diseases of plant can be improved, Promoting plant growth, improve output, and polypeptide class antimicrobial substance can be produced have good antagonistic activity to plant pathogenic fungi.It is a kind of biocontrol bacteria preferably.In addition, bacillus polymyxa also has the biological activitys such as multiple enzyme is alive, anti-oxidant and antitumor.Therefore, along with going deep into of Paenibacillus polymyxa research, it will have more wide application prospect in industrial or agricultural field, field of medicaments, biological theory research.
In view of the purposes that bacillus polymyxa is so many, domestic existing manufacturer production bacillus polymyxa series products, but related products is generally of low quality.The common production method of current bacillus polymyxa preparation adopts relevant bacillus polymyxa to produce bacterial classification, batch fermentation is cultivated, when to it, most or all form gemma, adopt Plate Filtration or centrifugal mode to concentrate, interpolation auxiliary agent post-drying or spraying dry obtain the active bacteria formulation of bacillus polymyxa.These methods also exist following deficiency:
1, fermentor tank coefficient is 60%-70%, and plant factor is not high;
2, the batch fermentation owing to adopting, cause fermentation initial medium excessive concentration, after inoculation, lag phase is longer, and in fermenting process, by product is formed more, and leavened prod concentration does not increase, and finally causes fermentation costs larger;
3, flocculation/Plate Filtration that fermented liquid concentrated general adopts or centrifugation technique, these two kinds of technology generally all can produce a large amount of waste water, and subsequent treatment cost is higher;
4, adopt flocculation/Plate Filtration or centrifugation technique that the effective constituent inside fermentation supernatant also can be caused to lose, cause the decline of product effect;
5, the temperature in that spraying dry generally sets is 180 DEG C to 200 DEG C, and temperature out is 80 DEG C to 100 DEG C, and under working temperature higher like this, the bacterium number of some kind has decline to a certain degree, directly affects the quality of product.
Vacuum film evaporation device is the general name of a class vaporizer, and feature is that feed liquid is membranaceous flowing along heating tube wall and carries out conducting heat and evaporating, and advantage is that heat transfer efficiency is high, and velocity of evaporation is fast, and residence time of material is short, is therefore particularly suitable for the evaporation of heat-sensitive substance.Such vaporizer comprises MVR (mechanical steam recompression) vaporizer, falling film type concentration evaporator and board-like concentration evaporator etc.The fields such as be usually applied to active Chinese drug component material to concentrate, foodstuff additive concentrate, and microbiotic concentrates, and zymin is concentrated, but also concentrate aspect not used for active bacteria formulation at present.
Multistage cold nebulization fluidized drying granulation, compared to conventional spray-drying tower, have employed the technology of multiple advanced person, has used multiple spray gun structure in such as tower, what spray gun adopted is high pressure spray nozzle, the droplet dispersion of ejection is effective, and the droplet of multiple nozzle ejection collides mutually, very easily forms macrobead; Do not form then being trapped by cyclonic separator of particle, then return agglomeration again and granulation that tower top range of atomization carries out powder; And there is fluidized-bed can carry out redrying to the particle formed at the bottom of tower, reduce the water content of particle further; This system requirements charging has very high solid content (10%-25%), does not need tackiness agent just directly can form particle like this; Owing to being multilevel drying system, and material moisture is not high, so the service temperature of this equipment to compare conventional spray-drying tower low, general air temperature controls at 130 DEG C-180 DEG C, and temperature out controls between 60 DEG C-80 DEG C, this system possesses the ability of good dry heat-sensitive material like this, this technology is applied in the drying of active bacteria formulation, can biological activity well in retained product, obtain high-quality product, and environmental protection, the advantages such as operation is few.
Fermentation and drying-granulating can produce a large amount of waste gas; the inside is normal containing volatile organic matter (VOC); hydrogen sulfide; ammonia; the various pollutent such as thio-alcohol; simultaneously with unpleasant foul smell, it generally directly discharges or discharges after simple Water spray by past fermentation enterprise, and two kinds of processing modes can cause the severe contamination to environment.Adopt contaminants associated in suitable chemical reagent direct oxidation waste gas or be reasonable treatment process with the pollutent that physical method decomposes wherein, the foul smell in removing exhaust gas can be separated, reduce environmental pollution.
Summary of the invention
The object of the invention is for above-mentioned present situation, aim to provide a kind of plant factor high, quality product improves, it is relatively good that biological activity keeps, waste gas, discharged wastewater met the national standard, can large-scale industrialized production, quality product is more stable, and output is higher, the preparation technology of the bacillus polymyxa active bacteria formulation that production cost obviously reduces.
The implementation of the object of the invention is, a kind of preparation technology of bacillus polymyxa active bacteria formulation, and concrete steps are as follows:
1) first order seed is cultivated: 2000ml primary-seed medium is housed in 5000ml triangular flask, 115 DEG C-121 DEG C moist heat sterilization 15-30min, get 10ml bacillus polymyxa viable bacteria freeze-drying pipe strain inoculation in primary-seed medium, cultivate 12 ~ 16h at 28 DEG C-30 DEG C; Raw material and the consumption of first order seed cultivation used medium are: glucose 0.5%-2.5%, extractum carnis 0.5%-3%, peptone 0.5%-3%, sodium-chlor 0.5%-1%, and medium pH is 6.5-7.5;
2) secondary seed is cultivated: 150L or 300L secondary seed medium is housed in 400L fermentor tank, 115 DEG C-121 DEG C moist heat sterilization 15-30min, the first order seed grown by 3000ml is inoculated in secondary seed medium; 12 ~ 16h is cultivated at 28 DEG C-30 DEG C; Raw material and the consumption of secondary seed cultivation used medium are: glucose 0.5%-2.5%, yeast extract 0.5%-3%, peptone 0.5%-2.5%, dipotassium hydrogen phosphate 0.02%-0.05%, sodium-chlor 0.5%-1%, magnesium sulfate 0.02%-0.1%, medium pH is adjusted to 6.5-7.5;
3) ferment: at 5m
3or 40m
3in fermentor tank, 4000L or 30m is housed
3bacillus polymyxa viable bacteria fermentation substratum, 115 DEG C-121 DEG C moist heat sterilization 15-30min, the secondary seed grown by 150L or 300L is inoculated in bacillus polymyxa viable bacteria fermentation substratum, controls tank pressure 0.02Mpa-0.05Mpa, cultivates 40-46h at 28 DEG C-32 DEG C; Raw material and the consumption of fermentation used medium are: glucose 1%-2%, dregs of beans 1%-3%, corn steep liquor 1%-3%, yeast powder 1%-3%, peptone 1%-3%, Fructus Hordei Germinatus leaching powder 1%-2%, dipotassium hydrogen phosphate 0.01%-0.05%, magnesium sulfate 0.1%-0.2%, manganous sulfate 0.002%, medium pH is 6.5-7.5;
4) feed supplement: add the carbon source glucose supplemented medium be mixed with by glucose 20%-60%, water 40%-80% when fermentation starts stream to 12-17h, ferments to 38-42 hour and terminates;
5) pH controls: add with the ammoniacal liquor stream of mass percentage concentration 18%-24% as required and regulate pH, make fermented liquid liquid pH control between 6.0-6.5;
6), when being more than or equal to 90% to spore forming rate, fermentation is terminated;
7) enter thickener when fermented liquid being heated to 35 DEG C-60 DEG C, concentrate under vacuum tightness is-70kpa ~-95kpa, be concentrated into solid content when reaching 10%-25%, start discharging;
8) the multistage cold nebulization fluidization drying apparatus of concentrated broth carries out drying-granulating, and particle, through sorting, meets particle requirement and directly goes out tower, obtains CFU and is no less than 1.5 × 10
10individual bacillus polymyxa product; Described inlet temperature 130-180 DEG C, temperature out 60-80 DEG C;
9) vent gas treatment: adopt chemical oxidation, plasma to irradiate or uv irradiating de-tastes, discharge after ammonia nitrogen removal or depriving hydrogen sulphide process.
The present invention has following advantage:
1, by the method for feed supplement, significantly improve unit output, reduce unit cost, fermentor tank coefficient brings up to 80%-90% by original 60%-70%, and plant factor improves, and single tank output promotes greatly; By fed-batch fermentation, reach high density fermentation, improve biomass, fermented liquid active constituent content improves 10-20%, higher than batch fermentation;
2, adopt multistage fermentation technique, can be used on various scale fermentation tank, shorten the fermentation period of genus bacillus, reduce fermentation microbiological contamination risk;
3, adopt the direct concentrated broth of cryogenic vacuum thin film concentrator, compare and adopt traditional flocculation/Plate Filtration or centrifugal condensing mode, in fermented liquid, the synergistic matter, growth-promoting material, Substance etc. of solubility obtains efficient recovery;
4, adopt low temperature multistage drying and granulating novel process, compare conventional centrifugal spraying dry production technique, import wind-warm syndrome and outlet wind-warm syndrome low, remain biological activity better, and disposable acquisition water dispersion granule product instead of powder product;
5, auxiliary agent need not be added after fermentation can dry or spraying dry:
6, the water of condensation produced in cryoconcentration process, biochemical oxygen demand (BOD) (BOD value) is extremely low, generally below 80, reaches qualified discharge standard; And traditional flocculation/Plate Filtration or centrifugal concentration method, the waste water that a large amount of biochemical oxygen demand (BOD) (BOD value) is very high can be produced, after needing to carry out complicated process, just may reach emission standard;
7, fermentation tail gas, drying and granulating tail gas are all collected by gathering system, de-taste through chemical oxidation, plasma irradiation, uv irradiating etc., ammonia nitrogen removal, can qualified discharge after the process of depriving hydrogen sulphide vent gas treatment mode.
Embodiment
The present invention gets bacillus polymyxa seed freeze-drying pipe bacterial classification, is inoculated in the primary-seed medium of 115-121 DEG C of moist heat sterilization 15-30min, carries out first order seed cultivation.First order seed is inoculated in through 115-121 DEG C of sterilizing 15-30min, in the fermentor tank of secondary seed medium, carries out secondary seed cultivation.Fermentation, feed supplement during the fermentation, terminates fermentation.
I and II seed culture medium, fermention medium, supplemented medium is after moist heat sterilization, and substratum will be down to rapidly about 30 DEG C.
Use film under vacuum thickener concentrated broth, thickener is MVR thickener, falling-film evaporator or plate evaporation thickener.Adopt MVR thickener, compress from evaporator room secondary steam out through compressor, pressure and temp is increased to 100 DEG C-115 DEG C, delivers to heating chamber when heating steam to use, and heating fermented liquid is to feeding temperature, and heating steam itself is condensed into water.
Multistage cold nebulization fluidized drying granulation: the multistage cold nebulization fluidization drying apparatus of concentrated broth carries out drying-granulating, and particle, through sorting, meets particle requirement and directly goes out tower, obtains CFU and is no less than 1.5 × 10
10individual bacillus polymyxa product; Described inlet temperature 130 DEG C-180 DEG C, temperature out 60 DEG C-80 DEG C;
With specific embodiment in detail the present invention is described in detail below:
Embodiment 1:(is with 5m
3fermentor tank is example)
1) first order seed is cultivated: 2000ml primary-seed medium is housed, 121 DEG C of moist heat sterilization 15min in 5000ml triangular flask.Get 10ml bacillus polymyxa viable bacteria freeze-drying pipe strain inoculation in primary-seed medium, cultivate 16h at 28 DEG C; Raw material and the consumption of first order seed cultivation used medium are: glucose 0.5%, extractum carnis 0.5%, peptone 3%, sodium-chlor 0.5%, and medium pH is 7.5;
2) secondary seed is cultivated: 150L secondary seed medium is housed in 400L fermentor tank, 121 DEG C of moist heat sterilization 15min.The first order seed grown by 3000ml is inoculated in secondary seed medium; 16h is cultivated at 28 DEG C; Raw material and the consumption of secondary seed cultivation used medium are: glucose 0.5%, yeast extract 3%, peptone 0.5%, dipotassium hydrogen phosphate 0.02%, sodium-chlor 0.5%, magnesium sulfate 0.02%, and medium pH is adjusted to 7.5;
3) ferment: at 5m
34000L bacillus polymyxa viable bacteria fermentation substratum is housed, 121 DEG C of moist heat sterilization 15min in fermentor tank.The secondary seed grown by 150L is inoculated in bacillus polymyxa viable bacteria fermentation substratum, controls tank pressure 0.02Mpa-0.05Mpa, cultivates 46h at 28 DEG C; Raw material and the consumption of fermentation used medium are: glucose 1%, dregs of beans 1%, corn steep liquor 1%, yeast powder 1%, peptone 3%, Fructus Hordei Germinatus leaching powder 2%, dipotassium hydrogen phosphate 0.01%, magnesium sulfate 0.1%, manganous sulfate 0.002%, and medium pH is 7.5;
4) feed supplement: add the carbon source glucose supplemented medium be mixed with by glucose 60%, water 40% when fermentation starts stream to 12h, ferments to 38 hours and terminates;
5) pH controls: add with the ammoniacal liquor stream of mass percentage concentration 20% as required and regulate pH, make fermented liquid liquid pH control between 6.0-6.5;
6), when being more than or equal to 90% to spore forming rate, fermentation is terminated;
7) enter thickener when fermented liquid being heated to 35 DEG C, in vacuum tightness for concentrating under-95kpa, being concentrated into solid content when reaching 10%-20%, starting discharging; Compress from evaporator room secondary steam out through compressor, pressure and temp is increased to 100 DEG C-115 DEG C, delivers to heating chamber when heating steam to use, and heating fermented liquid to 35 DEG C, heating steam itself is condensed into water.In whole process, secondary steam is fully used, and greatly improves thermo-efficiency.
8) the multistage cold nebulization fluidization drying apparatus of concentrated broth carries out drying-granulating, and particle, through sorting, meets particle requirement and directly goes out tower, obtains CFU and is no less than 1.5 × 10
10individual bacillus polymyxa product; Described inlet temperature 130 DEG C, temperature out 60 DEG C;
9) vent gas treatment: drying and granulating tail gas is collected by gathering system, then chemical scrubber is passed through, with chemical oxidizing agent as hydrogen peroxide, clorox generation solution-air contacts, malodorous elements in this process in gas phase transfers to liquid phase, and be oxidized by chemical oxidizing agent, thus reach de-taste, the object such as ammonia nitrogen removal, depriving hydrogen sulphide, then qualified discharge in a organized way.
Embodiment 2, with embodiment 1, unlike,
1) first order seed cultivates the raw material of used medium and consumption is: glucose 1.5%, extractum carnis 3%, peptone 0.5%, sodium-chlor 1%, and medium pH is 6.5; 115 DEG C of moist heat sterilization 30min, inoculate latter 30 DEG C and cultivate 12h.
2) secondary seed cultivates the raw material of used medium and consumption is: glucose 1.5%, yeast extract 1%, peptone 2%, dipotassium hydrogen phosphate 0.05%, sodium-chlor 1%, magnesium sulfate 0.1%, and medium pH is adjusted to 6.5; 115 DEG C of moist heat sterilization 30min, inoculate latter 30 DEG C and cultivate 12h.
3) the ferment raw material of used medium and consumption is: glucose 1%, dregs of beans 1%, corn steep liquor 2%, yeast powder 2.5%, peptone 3%, Fructus Hordei Germinatus leaching powder 2%, dipotassium hydrogen phosphate 0.01%, magnesium sulfate 0.1%, manganous sulfate 0.002%, and medium pH is 6.5; 115 DEG C of moist heat sterilization 30min, inoculate latter 32 DEG C and cultivate 40h.
4) feed supplement: add the carbon source glucose supplemented medium be mixed with by glucose 20%, water 80% when fermentation starts stream to 17h, ferments to 42 hours and terminates;
6) use falling-film evaporator to enter film under vacuum thickener when fermented liquid being heated to 60 DEG C, evaporate under-70kpa in vacuum tightness, then enter two effects and triple-effect evaporator successively, be concentrated into solid content when reaching 15%-25%, start discharging.
8) the multistage cold nebulization fluidization drying apparatus of concentrated broth carries out drying-granulating, and particle, through sorting, meets particle requirement and directly goes out tower; Described inlet temperature 180 DEG C, temperature out 80 DEG C;
The bacillus polymyxa dry powder active bacteria formulation that the present embodiment is made, is no less than 1.5 × 10 through checking every gram of bacterium powder CFU
10individual.
Embodiment 3, with embodiment 1, unlike,
1) first order seed cultivates the raw material of used medium and consumption is: glucose 2%, extractum carnis 0.5%, peptone 2%, sodium-chlor 1%, and medium pH is 7.0; 115 DEG C of moist heat sterilization 30min, inoculate latter 30 DEG C and cultivate 12h.
2) secondary seed cultivates the raw material of used medium and consumption is: glucose 1.5%, yeast extract 3%, peptone 2.5%, dipotassium hydrogen phosphate 0.05%, sodium-chlor 1%, magnesium sulfate 0.1%, and medium pH is adjusted to 7.0; 115 DEG C of moist heat sterilization 30min, inoculate latter 30 DEG C and cultivate 12h.
3) the ferment raw material of used medium and consumption is: glucose 1.5%, dregs of beans 3%, corn steep liquor 1%, yeast powder 1%, peptone 3%, Fructus Hordei Germinatus leaching powder 2%, dipotassium hydrogen phosphate 0.05%, magnesium sulfate 0.2%, manganous sulfate 0.002%, and medium pH is 7.0; 115 DEG C of moist heat sterilization 30min, inoculate latter 32 DEG C and cultivate 40h.
4) feed supplement: add the carbon source glucose supplemented medium be mixed with by glucose 50%, water 50% when fermentation starts stream to 14h, ferments to 40 hours and terminates;
6) plate evaporation thickener concentrated broth is used: enter plate evaporation thickener when fermented liquid being heated to 50 DEG C and concentrate, under vacuum tightness-86kp, carry out evaporation concentration.Then when fermented liquid be concentrated into solid content reach 15%-25% time, start discharging.
8) the multistage cold nebulization fluidization drying apparatus of concentrated broth carries out drying-granulating, and particle, through sorting, meets particle requirement and directly goes out tower; Described inlet temperature 150 DEG C, temperature out 70 DEG C;
The bacillus polymyxa dry powder active bacteria formulation that the present embodiment is made, is no less than 1.5 × 10 through checking every gram of bacterium powder CFU
10individual.
9) vent gas treatment: fermentation tail gas, drying and granulating tail gas are collected by gathering system, then by plasma reaction district, high chemically active material is rich in this district, as high-energy electron, ion, free radical and excited state molecule etc., pollution substance in waste gas and these high energy capacity materials produce and react, decompose in very short time, thus reach de-taste, the object such as ammonia nitrogen removal, depriving hydrogen sulphide, then qualified discharge in a organized way.
Embodiment 4:(is with 40m
3fermentor tank is example), with embodiment 1, unlike
1) first order seed cultivates the raw material of used medium and consumption is: glucose 2.5%, extractum carnis 0.5%, peptone 3%, sodium-chlor 0.5%, and medium pH is 7.5;
2) secondary seed is cultivated: 300L secondary seed medium is housed in 400L fermentor tank, raw material and the consumption of secondary seed cultivation used medium are: glucose 0.5%, yeast extract 0.5%, peptone 2.5%, dipotassium hydrogen phosphate 0.05%, sodium-chlor 0.8%, magnesium sulfate 0.08%, medium pH is adjusted to 7.5;
3) ferment: at 40m
3in fermentor tank, 30m is housed
3bacillus polymyxa fermention medium, access 300L secondary seed.Raw material and the consumption of fermentation used medium are: glucose 2%, dregs of beans 1%, corn steep liquor 1%, yeast powder 3%, peptone 3%, Fructus Hordei Germinatus leaching powder 2%, dipotassium hydrogen phosphate 0.05%, magnesium sulfate 0.2%, manganous sulfate 0.002%, and medium pH is 7.5;
4) feed supplement: add the carbon source glucose supplemented medium be mixed with by glucose 40%, water 60% when fermentation starts stream to 16h, ferments to 39 hours and terminates;
8) the multistage cold nebulization fluidization drying apparatus of concentrated broth carries out drying-granulating, and particle, through sorting, meets particle requirement and directly goes out tower; Described inlet temperature 140 DEG C, temperature out 60 DEG C;
The bacillus polymyxa dry powder active bacteria formulation that the present embodiment is made, is no less than 1.5 × 10 through checking every gram of bacterium powder CFU
10individual.
9) vent gas treatment: fermentation tail gas, drying and granulating tail gas are collected by gathering system, then by plasma reaction district, high chemically active material is rich in this district, as high-energy electron, ion, free radical and excited state molecule etc., pollution substance in waste gas and these high energy capacity materials produce and react, decompose in very short time, thus reach de-taste, the object such as ammonia nitrogen removal, depriving hydrogen sulphide, then qualified discharge in a organized way.
Embodiment 5:(is with 40m
3fermentor tank is example) with embodiment 1, unlike,
1) first order seed cultivates the raw material of used medium and consumption is: glucose 2%, extractum carnis 1%, peptone 2.5%, sodium-chlor 0.5%, and medium pH is 7.5;
2) secondary seed is cultivated: 300L secondary seed medium is housed in 400L fermentor tank, raw material and the consumption of secondary seed cultivation used medium are: glucose 0.5%, yeast extract 2.5%, peptone 0.5%, dipotassium hydrogen phosphate 0.02%, sodium-chlor 0.5%, magnesium sulfate 0.02%, medium pH is adjusted to 7.5;
3) ferment: at 40m
3in fermentor tank, 30m is housed
3bacillus polymyxa fermention medium, access 300L secondary seed.Raw material and the consumption of fermentation used medium are: glucose 1.5%, dregs of beans 2.5%, corn steep liquor 1%, yeast powder 2.5%, peptone 1%, Fructus Hordei Germinatus leaching powder 1%, dipotassium hydrogen phosphate 0.01%, magnesium sulfate 0.1%, manganous sulfate 0.002%, and medium pH is 7.5;
4) feed supplement: add the carbon source glucose supplemented medium be mixed with by glucose 30%, water 70% when fermentation starts stream to 13h, ferments to 41 hours and terminates;
6) use falling-film evaporator to enter film under vacuum thickener when fermented liquid being heated to 45 DEG C, evaporate under-90kpa in vacuum tightness, then enter two effects and triple-effect evaporator successively, be concentrated into solid content when reaching 15%-25%, start discharging.
The bacillus polymyxa dry powder active bacteria formulation that the present embodiment is made, is no less than 1.5 × 10 through checking every gram of bacterium powder CFU
10individual.
9) vent gas treatment: fermentation tail gas, drying and granulating tail gas are collected by gathering system, then by high energy UV ultraviolet reaction zone, the oxygen molecule in the air in this district can be decomposed generation free oxygen, and unstable the combination with oxygen molecule of free oxygen produces ozone.Pre-Ozonation on Organic Matter has extremely strong oxygenizement, can produce with the organic pollutant in waste gas and decompose oxidizing reaction, make its Degradation and Transformation become low molecular compound, water and carbonic acid gas, thus reach de-taste, the object such as ammonia nitrogen removal, depriving hydrogen sulphide, then qualified discharge in a organized way.
Embodiment 6:(is with 40m
3fermentor tank is example)
1) first order seed cultivates the raw material of used medium and consumption is: glucose 2.5%, extractum carnis 1.5%, peptone 2.5%, sodium-chlor 0.5%, and medium pH is 7.5;
2) secondary seed is cultivated: 300L secondary seed medium is housed in 400L fermentor tank, raw material and the consumption of secondary seed cultivation used medium are: glucose 2.5%, yeast extract 1.6%, peptone 1.7%, dipotassium hydrogen phosphate 0.02%, sodium-chlor 0.5%, magnesium sulfate 0.02%, medium pH is adjusted to 7.5;
3) ferment: at 40m
3in fermentor tank, 30m is housed
3bacillus polymyxa fermention medium, access 300L secondary seed.Raw material and the consumption of fermentation used medium are: glucose 2%, dregs of beans 1%, corn steep liquor 3%, yeast powder 2.5%, peptone 1%, Fructus Hordei Germinatus leaching powder 2%, dipotassium hydrogen phosphate 0.01%, magnesium sulfate 0.1%, manganous sulfate 0.002%, and medium pH is 7.5;
5) terminate fermentation: when being more than or equal to 90% to spore forming rate, terminate fermentation;
6) plate evaporation thickener concentrated broth is used: enter plate evaporation thickener when fermented liquid being heated to 60 DEG C and concentrate, evaporate under vacuum tightness-70kp.Be concentrated into solid content when reaching 15%-25%, start discharging.
The bacillus polymyxa dry powder active bacteria formulation that the present embodiment is made, is no less than 1.5 × 10 through checking every gram of bacterium powder CFU
10individual.
9) fermentation tail gas, drying and granulating tail gas are collected by gathering system, and then by high energy UV ultraviolet reaction zone, the oxygen molecule in the air in this district can be decomposed generation free oxygen, and unstable the combination with oxygen molecule of free oxygen produces ozone.Pre-Ozonation on Organic Matter has extremely strong oxygenizement, can produce with the organic pollutant in waste gas and decompose oxidizing reaction, make its Degradation and Transformation become low molecular compound, water and carbonic acid gas, thus reach de-taste, the object such as ammonia nitrogen removal, depriving hydrogen sulphide, then qualified discharge in a organized way.
Claims (4)
1. a preparation technology for bacillus polymyxa active bacteria formulation, is characterized in that concrete steps are as follows:
1) first order seed is cultivated: 2000ml primary-seed medium is housed in 5000ml triangular flask, 115 DEG C-121 DEG C moist heat sterilization 15-30min, get 10ml bacillus polymyxa viable bacteria freeze-drying pipe strain inoculation in primary-seed medium, cultivate 12 ~ 16h at 28 DEG C-30 DEG C; Raw material and the consumption of first order seed cultivation used medium are: glucose 0.5%-2.5%, extractum carnis 0.5%-3%, peptone 0.5%-3%, sodium-chlor 0.5%-1%, and medium pH is 6.5-7.5;
2) secondary seed is cultivated: 150L or 300L secondary seed medium is housed in 400L fermentor tank, 115 DEG C-121 DEG C moist heat sterilization 15-30min, the first order seed grown by 3000ml is inoculated in secondary seed medium; 12 ~ 16h is cultivated at 28 DEG C-30 DEG C; Raw material and the consumption of secondary seed cultivation used medium are: glucose 0.5%-2.5%, yeast extract 0.5%-3%, peptone 0.5%-2.5%, dipotassium hydrogen phosphate 0.02%-0.05%, sodium-chlor 0.5%-1%, magnesium sulfate 0.02%-0.1%, medium pH is adjusted to 6.5-7.5;
3) ferment: at 5m
3or 40m
3in fermentor tank, 4000L or 30m is housed
3bacillus polymyxa viable bacteria fermentation substratum, 115 DEG C-121 DEG C moist heat sterilization 15-30min, the secondary seed grown by 150L or 300L is inoculated in bacillus polymyxa viable bacteria fermentation substratum, controls tank pressure 0.02Mpa-0.05Mpa, cultivates 40-46h at 28 DEG C-32 DEG C; Raw material and the consumption of fermentation used medium are: glucose 1%-2%, dregs of beans 1%-3%, corn steep liquor 1%-3%, yeast powder 1%-3%, peptone 1%-3%, Fructus Hordei Germinatus leaching powder 1%-2%, dipotassium hydrogen phosphate 0.01%-0.05%, magnesium sulfate 0.1%-0.2%, manganous sulfate 0.002%, medium pH is 6.5-7.5;
4) feed supplement: add the carbon source glucose supplemented medium be mixed with by glucose 20%-60%, water 40%-80% when fermentation starts stream to 12-17h, ferments to 38-42 hour and terminates;
5) pH controls: add with the ammoniacal liquor stream of mass percentage concentration 18%-24% as required and regulate pH, make fermented liquid liquid pH control between 6.0-6.5;
6), when being more than or equal to 90% to spore forming rate, fermentation is terminated;
7) enter thickener when fermented liquid being heated to 35 DEG C-60 DEG C, concentrate under vacuum tightness is-70kpa ~-95kpa, be concentrated into solid content when reaching 10%-25%, start discharging;
8) the multistage cold nebulization fluidization drying apparatus of concentrated broth carries out drying-granulating, and particle, through sorting, meets particle requirement and directly goes out tower, obtains CFU and is no less than 1.5 × 10
10individual bacillus polymyxa product; Described inlet temperature 130-180 DEG C, temperature out 60-80 DEG C;
9) vent gas treatment: adopt chemical oxidation, plasma to irradiate or uv irradiating de-tastes, discharge after ammonia nitrogen removal or depriving hydrogen sulphide process.
2. the preparation technology of a kind of bacillus polymyxa active bacteria formulation according to claim 1, is characterized in that I and II seed culture medium, fermention medium, and supplemented medium is after moist heat sterilization, and substratum will be down to rapidly 30 DEG C.
3. the preparation technology of a kind of bacillus polymyxa active bacteria formulation according to claim 1, is characterized in that thickener is MVR thickener, falling-film evaporator or plate evaporation thickener.
4. the preparation technology of a kind of bacillus polymyxa active bacteria formulation according to claim 1, it is characterized in that adopting MVR thickener, compress from evaporator room secondary steam out through compressor, pressure and temp is increased to 100 DEG C-115 DEG C, deliver to heating chamber when heating steam use, heating fermented liquid is to feeding temperature, and heating steam itself is condensed into water.
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| CN106509059A (en) * | 2016-10-29 | 2017-03-22 | 常州市鼎升环保科技有限公司 | Preparation method of food fresh keeping agent having biological sources |
| CN111575201A (en) * | 2020-05-09 | 2020-08-25 | 大连理工大学 | High-density mixed fermentation preparation method of composite bacillus agent |
| CN113025514A (en) * | 2019-12-25 | 2021-06-25 | 百岳特生物技术（上海）有限公司 | Particle structure with high-concentration live bacteria and preparation method thereof |
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| CN102409007A (en) * | 2011-07-04 | 2012-04-11 | 天津市育琪生物技术有限公司 | Bacillus microecological preparation and liquid-solid fermentation combining preparation process thereof |
| CN102948621A (en) * | 2012-11-12 | 2013-03-06 | 东北农业大学 | Prebiotic peptide biological feed additive and preparation method and application thereof |
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| CN106509059A (en) * | 2016-10-29 | 2017-03-22 | 常州市鼎升环保科技有限公司 | Preparation method of food fresh keeping agent having biological sources |
| CN113025514A (en) * | 2019-12-25 | 2021-06-25 | 百岳特生物技术（上海）有限公司 | Particle structure with high-concentration live bacteria and preparation method thereof |
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