CN104988185B - The method that Trichoderma Viride extract improves alcoholic fermentation yield - Google Patents

The method that Trichoderma Viride extract improves alcoholic fermentation yield Download PDF

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Publication number
CN104988185B
CN104988185B CN201510164803.5A CN201510164803A CN104988185B CN 104988185 B CN104988185 B CN 104988185B CN 201510164803 A CN201510164803 A CN 201510164803A CN 104988185 B CN104988185 B CN 104988185B
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fermentation
alcohol
added
trichoderma viride
straw powder
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CN104988185A (en
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辅琳瑜
李加友
安鹏
邱浩峰
刘丽
何鑫奕
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Zhejiang Quanzhu Technology Co ltd
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Jiaxing University
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    • 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
    • C12P7/02Preparation of oxygen-containing organic compounds containing a hydroxy group
    • C12P7/04Preparation of oxygen-containing organic compounds containing a hydroxy group acyclic
    • C12P7/06Ethanol, i.e. non-beverage
    • C12P7/08Ethanol, i.e. non-beverage produced as by-product or from waste or cellulosic material substrate
    • C12P7/10Ethanol, i.e. non-beverage produced as by-product or from waste or cellulosic material substrate substrate containing cellulosic material
    • 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
    • C12P19/00Preparation of compounds containing saccharide radicals
    • C12P19/14Preparation of compounds containing saccharide radicals produced by the action of a carbohydrase (EC 3.2.x), e.g. by alpha-amylase, e.g. by cellulase, hemicellulase
    • 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

Abstract

The invention discloses a kind of methods that Trichoderma Viride extract improves alcoholic fermentation yield, include at least following steps:(1)Solid state fermentation is carried out by raw material of stalk, straw powder is added in fermenter, adds water and ammonium nitrate, and be sufficiently stirred, then accesses Trichoderma viride CGMCC3.6619, strain is made to be come into full contact with straw powder;Continuous culture one month, dries, it is spare to obtain fermentation substrate after fermentation;(2)The extraction and purifying that extract alcohol rises are filtered after constant temperature processing with NaOH solution soaking fermentation matrix, stoste are obtained after concentrating filter liquor;Then stoste is adjusted to pH 2.0, is stood, centrifugation, is removed precipitation, product alcohol liter is obtained after clear liquid is spray-dried;(3)Alcoholic fermentation takes starch that clear water is added, and stirring makes starch be uniformly dispersed in water, and liquid alpha-amylase is then added, and calcium chloride adjusts pH, adds liquid saccharifying enzyme, saccharification terminates postcooling, and activated saccharomyces cerevisiae and alcohol liter is added, and ferments in thermostatic chamber.

Description

The method that Trichoderma Viride extract improves alcoholic fermentation yield
Technical field
The invention belongs to prepare biologically active mixture by microorganism fungus kind to improve alcoholic fermentation yield Method.
Background technology
Fuel alcohol(Ethyl alcohol)It is one of three big new energy of 21 century, and high-concentration alcoholic fermentation is the certainty of industry development One of trend and technical bottleneck improve yeast to the tolerance of alcohol in high concentration to improve yeast using reasonable process condition Production alcohol ability receives significant attention.The factor for influencing high-concentration alcoholic fermentation is diversified, and restricted for these The countermeasure of the factor, people is also by every possible means.In the initiative for carrying out breeding species, improved equipment, Optimal Medium etc. On Research foundation, someone is conceived to the efficient utilization of existing equipment and technique, using complete batch fermentation mode, realizes high concentration Alcoholic fermentation.Also there is researcher by adding substance necessary to the increment of saccharomycete anaerobic growth into fermentation liquid, increasing is provided The substance that strong yeast cell resists poor environment factor finally realizes alcohol in high concentration to optimize the composition of fermentation liquid Fermentation.
Currently, for alcoholic fermentation auxiliary agent because its is easy to use, better results and is well received by the public in the market.Intelligent dove et al. is bent to find The fermentation assistant of French Lallemand companies production can accelerate the course of fermentation of wild grape wine, improve the conversion ratio of sugar.But its Higher price, and total acid content increased after use.Alcoholic fermentation auxiliary agent further includes surfactant such as Tween-20, or Person's yeast nutritire salt such as Angel fermentation accelerant, for improving the alcohol concentration in fermentation liquid.Also it very ferments synergy just like ferment Agent and Fermentation Additive in Liquor Production etc. can improve alcoholic fermentation efficiency, but because production cost height and product using effect are limited, very It is rare to be used widely in actual production.
Invention content
The present invention is in view of the above-mentioned problems, provide a kind of method that Trichoderma Viride extract improves alcoholic fermentation yield.
The method that a kind of Trichoderma Viride extract of the present invention improves alcoholic fermentation yield includes at least as follows Step:
(1)Solid state fermentation is carried out by raw material of stalk
Straw powder is added in fermenter, adds water and ammonium nitrate, and be sufficiently stirred, then accesses Trichoderma viride CGMCC3.6619 makes strain be come into full contact with straw powder;It continuously cultivates one month in 28 DEG C of thermostatic chambers, does after fermentation It is dry, it is spare to obtain fermentation substrate;
(2)The extraction and purifying that extract alcohol rises
The NaOH solution leach step for being 3.5% with mass fraction(1)Obtained drying for standby fermentation substrate, 60 DEG C of constant temperature It is filtered after water-bath 1h, stoste is obtained after concentrating filter liquor;Then stoste is adjusted to pH 2.0, after standing 10 min with hydrochloric acid 15min is centrifuged through 4 000rpm, removal precipitation obtains alcohol and rises product after spray-dried;
(3)Alcoholic fermentation
It takes starch 1kg to be put into stainless cylinder of steel, clear water 3L is added, stirring makes starch be uniformly dispersed in water, is then added Liquid alpha-amylase 1mL, calcium chloride 1g, 6.5 are adjusted to by the pH of system, and feed liquid is heated to 90 DEG C, keeps the temperature 30min postcoolings To 60 DEG C, regulation system pH to 4.5,2mL liquid saccharifying enzymes are added, 60 DEG C of saccharification 60min is maintained, is cooled to after saccharification 30 DEG C, and activated saccharomyces cerevisiae and alcohol liter 15g is added, ferment 48h in 28 DEG C of thermostatic chambers, obtains fermentation liquid, measures hair Alcohol concentration in ferment mash is 17%(v/v).
Further, straw powder fresh paddy rice stalk crushes after air-drying, and crosses 1mm sieves.
Further, the straw powder, water, ammonium nitrate ratio be:Straw powder 1kg, water 3kg, ammonium nitrate 10g;Institute The Trichoderma viride CGMCC3.6619 inoculum concentrations stated are the 1% of stalk dry weight.
The beneficial effects of the invention are as follows:The present invention prepares alcohol liter by raw material of stalk, is then added to alcoholic fermentation culture In base, to improve yeast tolerance, increase alcohol output.Alcohol liter is easy to use, is carried while reducing the production cost of alcohol High alcohol output, using effect is apparent, is a kind of alcoholic fermentation auxiliary agent really with commercial application value.Except this it Outside, it significantly improves the biotransformation efficiency of matrix also by addition efficient degrading bacterial strain Trichoderma viride CGMCC3.6619, this So that stover rate is up to 75% or more during preparing alcohol and rising, transformation efficiency and fermenting speed are leading, and obtain It is cheap that the alcohol arrived rises product price.
Description of the drawings
Fig. 1 is influence of the various concentration alcohol liter to yeast growth(107Ge ∕ ml)Figure.
Fig. 2 is influence diagram of the various concentration alcohol liter to yeast producing and ethanol.
Fig. 3 is influence table of the various concentration alcohol liter to glucose consumption.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and examples.
As shown in the figure:A kind of Trichoderma Viride extract of the present invention improves the method for alcoholic fermentation yield at least Include the following steps:
(1)Solid state fermentation is carried out by raw material of stalk
Straw powder is added in fermenter, adds water and ammonium nitrate, and be sufficiently stirred, then accesses Trichoderma viride CGMCC3.6619 makes strain be come into full contact with straw powder;It continuously cultivates one month in 28 DEG C of thermostatic chambers, does after fermentation It is dry, it is spare to obtain fermentation substrate;
(2)The extraction and purifying that extract alcohol rises
The NaOH solution leach step for being 3.5% with mass fraction(1)Obtained drying for standby fermentation substrate, 60 DEG C of constant temperature Water-bath is filtered after 1 hour, and stoste is obtained after concentrating filter liquor;Then stoste is adjusted to pH 2.0 with hydrochloric acid, stand 10 min It is centrifuged 15 minutes by 4 000 revs/min, removal precipitation obtains alcohol and rises product after spray-dried;
(3)Alcoholic fermentation
It takes starch 1kg to be put into stainless cylinder of steel, clear water 3L is added, stirring makes starch be uniformly dispersed in water, is then added Liquid alpha-amylase 1mL, calcium chloride 1g, 6.5 are adjusted to by the pH of system, and feed liquid is heated to 90 DEG C, keeps the temperature 30min postcoolings To 60 DEG C, regulation system pH to 4.5,2mL liquid saccharifying enzymes are added, 60 DEG C of saccharification 60min is maintained, is cooled to after saccharification 30 DEG C, and activated saccharomyces cerevisiae and alcohol liter 15g is added, ferment 48h in 28 DEG C of thermostatic chambers, obtains fermentation liquid, measures hair Alcohol concentration in ferment mash is 17%(v/v).
Straw powder fresh paddy rice stalk crushes after air-drying, and crosses 1mm sieves.
The straw powder, water, ammonium nitrate ratio be:Straw powder 1kg, water 3kg, ammonium nitrate 10g;The green wood Mould CGMCC3.6619 inoculum concentrations are the 1% of stalk dry weight.
Alcohol rises the influence experiment to yeast growth speed:
YPD fluid nutrient mediums are prepared, contain 20g peptones, 20g glucose, 10g yeast extracts in every 1L water.Additional addition The amount that alcohol rises presses concentration 0g/L, 0.1g/L, 0.2g/L, 0.4g/L, 0.5g/L, 1g/L, 1.25g/L, 1.7g/L, 2.5g/L, 5g/ L, 10g/L are added in shaking flask.It is inoculated with equivalent yeast liquid spawn, the constant temperature incubation at 170r/min on shaking table, 28 DEG C, per 1h Its primary yeast quantity of detection and OD values are to analyze influence of the alcohol liter to yeast growth speed.
Metabolite when alcohol is yeast growth, yeast growth situation have decisive influence, logarithm life to alcoholic fermentation Long-term yeast production alcohol ability is most strong.Therefore, yeast number amount changes in zymotic fluid when determining anaerobic fermentation, investigates different dense Spend influence of the alcohol liter to yeast growth.The result shows that(Fig. 1), alcohol liter has a significant impact the variation of yeast bio amount, with hair Alcohol rises the increase of dosage in zymotic fluid, and yeast quantity accordingly increases, also, Yeast proliferation speed improves, and shortens laundering period, logarithm Growth period shifts to an earlier date.When the dosage that alcohol rises reaches 5.0 g/L, yeast bio amount can increase by 100%, and maximum biomass shifts to an earlier date 2 d;When the dosage that alcohol rises reaches 10.0 g/L, yeast bio amount is not further added by.
Alcohol rises the influence experiment to yeast producing and ethanol and ethanol tolerance power:
Concentration of glucose is prepared up to 25% fermentation medium, packing 280mL or so fermented and cultureds are based on 250mL specifications In shaking flask(Culture medium liquid level is from bottleneck about 1cm), the alcohol of addition, which rises, presses setting concentration 0g/L, 0.1g/L, 0.5g/L, 1.65g/L, 2.5g/L, 3.3g/L, 5g/L, 10g/L are added in fermentation flask, and insulating box 28 is statically placed in after the yeast liquid of inoculation equivalent activation DEG C anaerobic fermentation, every detecting zymotic fluid yeast quantity in primary each fermentation flask, glucose residual, alcoholic strength and last for 24 hours The attainable maximum alcoholic strength of institute, to analyze influence of the alcohol liter to yeast producing and ethanol and resistance to ethyl alcohol.
The key of high-concentration alcoholic fermentation is the Commpensation And Adaptation for solving yeast to ethyl alcohol.Result of study shows various concentration Alcohol rise and have a facilitation to yeast producing and ethanol, alcohol concentration is significantly increased in zymotic fluid.Reach 5.0 when alcohol rises dosage When g/L, highest alcohol concentration can be increased to 15.8% from 7.1%, and alcohol content increases 123%.And increases alcohol and rise dosage extremely 10.0 g/L, highest alcohol concentration are not further added by(Fig. 2).It follows that alcohol liter produces alcohol to yeast and ethanol tolerance ability is equal It is obviously improved effect.
By the examination of glucose concentration to fermentation process, the consumption of glucose and the increase of yeast bio amount are couplings , when yeast growth speed is fast, the depletion rate of glucose is also fast, and yeast bio amount increased even more, the amount of glucose consumption Also more(Fig. 3).Change in conjunction with alcohol concentration and find, yeast growth also will continue to fermentation production alcohol, and highest wine after stopping The time that smart concentration occurs is later than yeast maximum biomass 2d.

Claims (3)

1. a kind of method that Trichoderma Viride extract improves alcoholic fermentation yield, it is characterised in that include the following steps:
(1)Solid state fermentation is carried out by raw material of stalk
Straw powder is added in fermenter, adds water and ammonium nitrate, and be sufficiently stirred, then accesses Trichoderma viride CGMCC3.6619 makes strain be come into full contact with straw powder;It continuously cultivates one month in 28 DEG C of thermostatic chambers, does after fermentation It is dry, it is spare to obtain fermentation substrate;
(2)The extraction and purifying that extract alcohol rises
The NaOH solution leach steps for being 3.5% with mass fraction(1)Obtained drying for standby fermentation substrate, 60 DEG C of thermostatted waters It is filtered after bath 1h, stoste is obtained after concentrating filter liquor;Then stoste is adjusted to pH 2.0 with hydrochloric acid, passed through after standing 10 min 4 000rpm centrifuge 15min, and removal precipitation obtains alcohol and rises product after spray-dried;
(3)Alcoholic fermentation
It takes starch 1kg to be put into stainless cylinder of steel, clear water 3L is added, stirring makes starch be uniformly dispersed in water, liquid is then added The pH of system is adjusted to 6.5 by alpha-amylase 1mL, calcium chloride 1g, feed liquid is heated to 90 DEG C, heat preservation 30min postcoolings are extremely 60 DEG C, regulation system pH to 4.5,2mL liquid saccharifying enzymes are added, 60 DEG C of saccharification 60min is maintained, is cooled to after saccharification 30 DEG C, and activated saccharomyces cerevisiae and alcohol liter 15g is added, ferment 48h in 28 DEG C of thermostatic chambers, obtains fermentation liquid, measures hair Alcohol concentration in ferment mash is 17% v/v.
2. the method for improving alcoholic fermentation yield according to the Trichoderma Viride extract described in claim 1, it is characterised in that Straw powder fresh paddy rice stalk crushes after air-drying, and crosses 1mm sieves.
3. the method for improving alcoholic fermentation yield according to the Trichoderma Viride extract described in claim 1, it is characterised in that The straw powder, water, ammonium nitrate ratio be:Straw powder 1kg, water 3kg, ammonium nitrate 10g;The Trichoderma viride CGMCC3.6619 inoculum concentrations are the 1% of stalk dry weight.
CN201510164803.5A 2015-04-09 2015-04-09 The method that Trichoderma Viride extract improves alcoholic fermentation yield Expired - Fee Related CN104988185B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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WO2012019308A1 (en) * 2010-08-12 2012-02-16 Iogen Energy Corporation Process for co-fermenting glucose and xylose
CN103436586A (en) * 2013-07-18 2013-12-11 济南开发区星火科学技术研究院 Process for producing alcohol by utilizing microorganisms to ferment biomass
EP2774992A1 (en) * 2013-03-06 2014-09-10 IFP Energies nouvelles Process for production of alcohol and / or solvents from biomass with washing of the lignocellulosic solid residue obtained after hydrolysis
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Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1451755A (en) * 2002-04-12 2003-10-29 中国农业大学 Method for producing alcohol by solid fermentation of stalks
WO2012019308A1 (en) * 2010-08-12 2012-02-16 Iogen Energy Corporation Process for co-fermenting glucose and xylose
EP2774992A1 (en) * 2013-03-06 2014-09-10 IFP Energies nouvelles Process for production of alcohol and / or solvents from biomass with washing of the lignocellulosic solid residue obtained after hydrolysis
CN103436586A (en) * 2013-07-18 2013-12-11 济南开发区星火科学技术研究院 Process for producing alcohol by utilizing microorganisms to ferment biomass
CN104446895A (en) * 2014-11-10 2015-03-25 张常书 Trichoderma biological humic acid and product thereof

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