CN106316784B - A method of xylitol is prepared with oil tea shell - Google Patents
A method of xylitol is prepared with oil tea shell Download PDFInfo
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- CN106316784B CN106316784B CN201610698186.1A CN201610698186A CN106316784B CN 106316784 B CN106316784 B CN 106316784B CN 201610698186 A CN201610698186 A CN 201610698186A CN 106316784 B CN106316784 B CN 106316784B
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/132—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
- C07C29/136—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH
- C07C29/14—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of a —CHO group
- C07C29/141—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of a —CHO group with hydrogen or hydrogen-containing gases
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/02—Monosaccharides
Abstract
(1), sorting a kind of method preparing xylitol with oil tea shell disclosed by the invention, is related to biomedicine technical field, preparation process is as follows:；(2), impregnate；(3), dry；(4), crush；(5), ferment；(6), homogeneous；(7), hydrolyze；(8), digest；(9), decolourize；(10), neutralize；(11), mix；(12), column is crossed；(13), it is concentrated；(14), freeze；(15), hydrogenate；(16), crystallize.Have the characteristics that raw material sources are wide, production cost is low, superior product quality, be suitable for preparing xylitol with oil tea shell, it can also be used to prepare xylitol with agricultural crops such as corncob, bagasse.
Description
Technical field
The present invention relates to biomedicine technical field, especially a kind of method for preparing xylitol with oil tea shell.
Background technique
Xylitol is the normal intermediate of a kind of sweet substance with nutritive value and human body carbohydate metabolism.Certainly
In right boundary, xylitol is widely present in various water fruits and vegetables, but content is very low.Currently, commodity xylitol is using jade mostly
In the agricultural crops such as meter Xin, bagasse, deacidifying process and ion are neutralized by prepared by deep processing, extraction process mainly has
Exchange deacidifying process.
It neutralizes deacidifying process process are as follows: raw material → hydrolysis → neutralization → concentration → decoloration → ion exchange → concentration → add
Hydrogen → concentration → crystallization → separation → packaging.
Its ion exchange deacidifying process process are as follows: raw material → hydrolysis → decoloration → ion exchange → concentration → ion exchange →
Add hydrogen → ion exchange → concentration → crystallization → separation → packaging.
Oil tea shell is that camellia oleifera fruit separates the epidermis shell after tea seed, contains Tea Saponin, tea seed polysaccharide, tea seed in oil tea shell
The active material of the utility values such as albumen.Currently, in most of rural area and mountain area, oil tea shell is not that be dropped be exactly to be used to fire
Burning take it is slow, it is a small amount of to be used to prepare activated carbon, thus, not only waste of resource, but also pollution environment.
It is " a kind of to prepare xylitol using tea fruit shell disclosed in Chinese patent (number of patent application 201510488115.4)
Method ", preparation process include: to use sulphuric acid hydrolysis after raw tea material shell crushes, and gained hydrolyzate uses CaCO again3During lotion carries out
With obtain liquid glucose, with active carbon decoloring after the concentration of gained liquid glucose, liquid glucose further purified by ion exchange, finally using hot
Band Candida carries out bioconversion and obtains xylitol.
Summary of the invention
That the purpose of the present invention is to provide a kind of raw material sources is wide, production cost is low, the preparation of the xylitol of superior product quality
Method.
To achieve the above object, technical measures adopted by the present invention are to invent a kind of side that xylitol is prepared with oil tea shell
Method, preparation process are as follows:
(1), sorting: selection nothing is rotted, without mildew, no disease and pests harm, fresh oil tea shell, spare；
(2), impregnate: by oil tea shell be put into 2-5 times of weight, volumetric concentration be 75-85% edible ethanol in, it is normal in room temperature
8-20h is impregnated in pressure, filters off soak, 2-5 times of weight is added, the edible ethanol that volumetric concentration is 35-50%, in 45-55
30-50min is impregnated at DEG C, is filtered, and is collected and is impregnated oil tea shell, it is spare；
(3), dry: oil tea shell will be impregnated and be transferred in baking oven, dry under 65-70 DEG C, normal pressure to water content and be less than
8%, dry oil tea shell is obtained, it is spare；
(4), crush: and then dry oil tea shell is ground into the oil tea shell particle of 5-20 mesh, it is spare；
(5), ferment: being added into oil tea shell particle and account for its weight 25-35%, the water that temperature is 35-40 DEG C, be added simultaneously
The leavening for accounting for crude oil tea shell weight 8-15.5% is sealed by fermentation processing 1-3 days at 28-35 DEG C, becomes fermentation oil tea shell
Grain, it is spare；
(6), homogeneous: being processed into uniform fermentation oil tea shell material through homogenizer at normal temperature for fermentation oil tea shell particle, standby
With；
(7), hydrolyze: being added and crude oil tea shell particle identical weight, weight concentration 1.5- into fermentation oil tea shell material
3.0% sour water, stirs evenly, and is heated to 110-140 DEG C by the heating rate of 5-10 DEG C/min, heats while stirring, then exists
Pressure is to handle 2.5-4.0h under 1.25-1.5MPa；Thereafter, when being naturally cooling to 70-80 DEG C, oil tea shell is collected in filtering respectively
Hydrolyzate and oil tea shell slag, it is spare；
(8), digest: the buck that oil tea shell slag clear water or weight concentration are 0.5-1.5% being cleaned 2-3 times, is drained；Again
Calcium sulfate, the 0.2- for accounting for the zytase of its weight 1.2-2.5%, the papain of 0.1-0.5%, 0.5-1.2% is added
1.0% magnesium phosphate mixes, the encapsulation process 20-38h at 20-30 DEG C；Then it is added and accounts for 2-3 times of oil tea shell slag weight, 40-
50 DEG C of warm water handles 20-40min, and filtering collects oil tea shell slag and digests Aqueous extracts, spare；
(9), decolourize: the decolorising agent for accounting for its weight 15-25% being added into oil tea shell hydrolyzate, at 70-80 DEG C at stirring
Reason, stirring rate 50-60r/min, when the light transmittance of oil tea shell hydrolyzate reaches 85% or more, oil tea shell is collected in filtering
Decolourize hydrolyzate, spare；
(10), neutralizing: being slowly added to the buck that weight concentration is 5-10% into oil tea shell decoloration hydrolyzate, side edged stirs,
When the pH value of oil tea shell decoloration hydrolyzate reaches 6.0-6.5, oil tea shell neutralizing hydrolysis liquid is obtained, it is spare；
(11), mix: oil tea shell slag being digested into Aqueous extracts and oil tea shell neutralizing hydrolysis liquid mixes, it is naturally quiet to put 4- after stirring evenly
8h, filtering, obtains oil tea shell mixed hydrolysis liquid, spare；
(12), cross column: oil tea shell mixed hydrolysis liquid is heated to 35-45 DEG C, cross anion exchange resin while hot, flow velocity is
15-28L/h collects anion exchange resin and crosses column liquid；Then anion exchange resin is crossed into column liquid and crosses cation exchange resin,
Flow velocity is 10-20L/h, collects cation exchange resin and crosses column liquid；Cation exchange resin is crossed into column liquid again and is heated to 50-60
DEG C, S-330 type macroporous absorbent resin is crossed, flow velocity 35-50L/h collects macroporous absorbent resin and crosses column liquid, spare；
(13), be concentrated: by macroporous absorbent resin cross column liquid investment inspissator in, temperature be 50-60 DEG C, pressure 1-5KPa
Under conditions of, the 1/8-1/5 of concentration to original volume obtains concentrated column liquid, spare；
(14), freeze: concentrated column liquid is transferred in freezer, quiet at 0-6 DEG C to put 5-8h, supernatant liquid is collected in filtering；
The edible ethanol that volumetric concentration is 90% or more is slowly added into supernatant liquid again, keeps the volume of the ethyl alcohol in supernatant liquid dense
Degree reaches 45-65%, then, quiet in freezer to put to no Precipitation, filtering, collects precipitating, spare；
(15), hydrogenate: the clear water of precipitating equivalent weight is dissolved, while the hydrogenating catalytic for accounting for Sediment weight 3-5% is added
Agent stirs evenly；Then pressure is 5-10MPa, temperature is 120-150 DEG C, the rate that is passed through of hydrogen is 1-2.5m3It is handled under/h
60-75min, the xylitol liquid after must hydrogenating are spare；
(16), crystallize: xylitol liquid is transferred in freezer, while the edible ethanol for being 95% or more with volumetric concentration is adjusted
Concentration of alcohol in xylitol liquid is 65% or more, then, quiet to put to no Precipitation, filtering, collects xylitol precipitating；So
Afterwards, it by xylitol precipitating deionized water dissolving, filters, then through drying, crushing to get xylitol.
Leavening described in fermentation procedure can be cellulase or saccharomycete, be also possible to by calcium sulfate, sorghum flour,
Cellulase, saccharomycete press (0.2-0.35): the weight ratio of (4-6): 0.2:1 mixes.
Sour water described in hydrolyzing process is one of hydrochloric acid, sulfuric acid, oxalic acid or a variety of aqueous solutions, when for two kinds with
When upper, it parts by weight or other ratios such as the ratio of each component is.
In hydrolyzing process, heat while stirring, stirring rate 15-25r/min.
Decolorising agent described in bleaching process can be neutral active charcoal particle or neutral diatomite or silica gel, be also possible to
By neutral active charcoal particle, neutral diatomite, 80-120 mesh silica gel by 1:(1-1.5): the weight ratio of (0.3-0.45) is matched
System mixes.
Buck described in neutralization step is one of sodium hydroxide, calcium hydroxide, sodium carbonate or a variety of aqueous solutions,
When to be two or more, it parts by weight or other ratios such as the ratio of each component is.
Anion exchange resin is strong-base anion-exchange resin or other anion exchange resin, cation exchange
Resin is weak-acid cation-exchange resin or other cation exchange resins.
The method for preparing xylitol with oil tea shell of the invention is using discarded oil tea shell as raw material, thus, original
Expect that source is wide.Meanwhile enzymatic hydrolysis process is devised in addition, the further loose fibre structure of oil tea shell, so that hydrolysis effect is more
Thoroughly, more efficient, product extracting rate is higher, and production cost is relatively low.In addition, using the second of various concentration in process early period
Alcohol processing, reduces the content of such as Tea Saponin, tea polysaccharide, tea albumen, avoids its influence to subsequent operation；And crossing column work
Two step resin treatments are taken in sequence, efficiently eliminate remaining impurity, avoid the influence to product appearance and subsequent operation, therefore
Prepared product quality is preferable.
Following table 1 is the effective ingredient detection data using xylitol prepared by method of the invention:
Table 1 (content of 100g)
| Composition | Content (g) |
| Xylitol | 96.52 |
| Xylose | 1.125 |
| Glucose | 0.562 |
| Polysaccharide | 0.025 |
It can be seen that from upper table data using xylitol prepared by method of the invention, content is high, quality is good, is suitble to
The application in each field.
Specific embodiment
With reference to embodiments, the present invention is further illustrated.Following explanation is but this hair in a manner of enumerating
Bright protection scope is not limited thereto.
The method for preparing xylitol with oil tea shell of the present embodiment, preparation process are as follows:
(1), sorting: selection nothing is rotted, without mildew, no disease and pests harm, fresh oil tea shell, spare；
(2), impregnate: oil tea shell being put into 4 times of weight, volumetric concentration to be soaked in 80% edible ethanol at normal temperatures and pressures
18h is steeped, soak is filtered off, 3 times of weight is added, the edible ethanol that volumetric concentration is 45%, 40min, mistake is impregnated at 50 DEG C
Filter collects and impregnates oil tea shell, spare；
(3), dry: oil tea shell will be impregnated and be transferred in baking oven, dried to water content under 68 DEG C, normal pressure less than 8%,
Oil tea shell must be dried, it is spare；
(4), crush: and then dry oil tea shell is ground into the oil tea shell particle of 15 mesh, it is spare；
(5), ferment: being added into oil tea shell particle and account for its weight 30%, the water that temperature is 38 DEG C, while be added and accounting for crude oil
Tea shell weight 12% is mixed by calcium sulfate, sorghum flour, cellulase, saccharomycete by the weight ratio of 0.3:5:0.2:1
Leavening is sealed by fermentation processing 2 days at 30 DEG C, becomes fermentation oil tea shell particle, spare；
(6), homogeneous: being processed into uniform fermentation oil tea shell material through homogenizer at normal temperature for fermentation oil tea shell particle, standby
With；
(7), hydrolyze: being added and crude oil tea shell particle identical weight, weight concentration 2.2% into fermentation oil tea shell material
Oxalic acid aqueous solution, stir evenly, and be heated to 125 DEG C by the heating rate of 8 DEG C/min, heat while stirring, stirring rate is
Then 20r/min handles 3.5h in the case where pressure is 1.4MPa；Thereafter, when being naturally cooling to 75 DEG C, oil tea is collected in filtering respectively
Shell hydrolyzate and oil tea shell slag, it is spare；
(8), digest: the buck that oil tea shell slag clear water or weight concentration are 1.0% being cleaned 3 times, is drained；It adds and accounts for
The zytase of its weight 1.8%, 0.3% papain, 0.8% calcium sulfate, 0.6% magnesium phosphate, mix, 25
Encapsulation process 30h at DEG C；Then the warm water for accounting for 3 times of oil tea shell slag weight, 45 DEG C is added, handles 30min, oil tea is collected in filtering
Shell slag digests Aqueous extracts, spare；
(9), decolourize: be added into oil tea shell hydrolyzate account for its weight 20%, by neutral active charcoal particle, neutral diatomite,
The silica gel of 100 mesh prepares the decolorising agent mixed, the stir process at 75 DEG C, stirring speed by the weight ratio of 1:1.25:0.4
Rate is 55r/min, and when the light transmittance of oil tea shell hydrolyzate reaches 85% or more, oil tea shell decoloration hydrolyzate is collected in filtering, standby
With；
(10), neutralize: being slowly added to the aqueous sodium carbonate that weight concentration is 8%, Bian Jia into oil tea shell decoloration hydrolyzate
While stirring, when the pH value of oil tea shell decoloration hydrolyzate reaches 6.2, oil tea shell neutralizing hydrolysis liquid is obtained, it is spare；
(11), mix: oil tea shell slag being digested into Aqueous extracts and oil tea shell neutralizing hydrolysis liquid mixes, it is naturally quiet to put 6h after stirring evenly,
Filtering, obtains oil tea shell mixed aqueous solution, spare；
(12), cross column: oil tea shell mixed aqueous solution is heated to 40 DEG C, cross strong-base anion-exchange resin, flow velocity while hot
For 22L/h, collects anion exchange resin and cross column liquid；Then anion exchange resin is crossed into column liquid and crosses Subacidity cation exchange
Resin, flow velocity 15L/h collect cation exchange resin and cross column liquid；Cation exchange resin is crossed into column liquid again and is heated to 55 DEG C,
S-330 type macroporous absorbent resin is crossed, flow velocity 42L/h collects macroporous absorbent resin and crosses column liquid, spare；
(13), it is concentrated: macroporous absorbent resin is crossed in column liquid investment inspissator, in the item that temperature is 55 DEG C, pressure is 3KPa
Under part, the 1/6 of concentration to original volume, concentrated column liquid is obtained, it is spare；
(14), freeze: concentrated column liquid is transferred in freezer, quiet at 2 DEG C to put 6h, supernatant liquid is collected in filtering；Again to
It is slowly added to the edible ethanol that volumetric concentration is 90% or more in supernatant liquid, reaches the volumetric concentration of the ethyl alcohol in supernatant liquid
It is then, quiet in freezer to put to no Precipitation, filtering to 55%, precipitating is collected, it is spare；
(15), hydrogenate: the clear water of precipitating equivalent weight is dissolved, while the hydrogenation catalyst for accounting for Sediment weight 4% is added
(metallic nickel), stirs evenly；Then pressure is 8MPa, temperature is 135 DEG C, the rate that is passed through of hydrogen is 2.0m3It is handled under/h
70min, the xylitol liquid after must hydrogenating are spare；
(16), crystallize: xylitol liquid is transferred in freezer, while the edible ethanol for being 95% or more with volumetric concentration is adjusted
Concentration of alcohol in xylitol liquid is 65% or more, then, quiet to put to no Precipitation, filtering, collects xylitol precipitating；So
Afterwards, it by xylitol precipitating deionized water dissolving, filters, then through drying, crushing to get xylitol.
The method for preparing xylitol with oil tea shell of the invention is suitable for preparing xylitol with oil tea shell, it can also be used to use
The agricultural crops such as corncob, bagasse prepare xylitol.
Claims (6)
1. a kind of method for preparing xylitol with oil tea shell, it is characterised in that preparation process is as follows:
(1), sorting: selection nothing is rotted, without mildew, no disease and pests harm, fresh oil tea shell, spare；
(2), impregnate: by oil tea shell be put into 2-5 times of weight, volumetric concentration be 75-85% edible ethanol in, at normal temperatures and pressures
8-20h is impregnated, soak is filtered off, 2-5 times of weight is added, the edible ethanol that volumetric concentration is 35-50%, at 45-55 DEG C
30-50min is impregnated, filtering collects and impregnates oil tea shell, spare；
(3), dry: oil tea shell will be impregnated and be transferred in baking oven, dry to water content under 65-70 DEG C, normal pressure less than 8%, obtain
Dry oil tea shell, it is spare；
(4), crush: and then dry oil tea shell is ground into the oil tea shell particle of 5-20 mesh, it is spare；
(5), ferment: being added into oil tea shell particle and account for its weight 25-35%, the water that temperature is 35-40 DEG C, while be added and accounting for original
The leavening of oil tea shell weight 8-15.5% is sealed by fermentation processing 1-3 days at 28-35 DEG C, becomes fermentation oil tea shell particle, standby
With；
(6), homogeneous: being processed into uniform fermentation oil tea shell material through homogenizer at normal temperature for fermentation oil tea shell particle, spare；
(7), hydrolyze: being added and crude oil tea shell particle identical weight, weight concentration 1.5-3.0% into fermentation oil tea shell material
Sour water, stir evenly, and be heated to 110-140 DEG C by the heating rate of 5-10 DEG C/min, heat while stirring, be then in pressure
2.5-4.0h is handled under 1.25-1.5MPa；Thereafter, when being naturally cooling to 70-80 DEG C, oil tea shell hydrolyzate is collected in filtering respectively
It is spare with oil tea shell slag；
(8), digest: the buck that oil tea shell slag clear water or weight concentration are 0.5-1.5% being cleaned 2-3 times, is drained；It adds
Account for the zytase of its weight 1.2-2.5%, the papain of 0.1-0.5%, the calcium sulfate of 0.5-1.2%, 0.2-1.0%
Magnesium phosphate, mix, the encapsulation process 20-38h at 20-30 DEG C；Then it is added and accounts for 2-3 times of oil tea shell slag weight, 40-50 DEG C
Warm water handles 20-40min, and filtering collects oil tea shell slag and digests Aqueous extracts, spare；
(9), decolourize: being added into oil tea shell hydrolyzate and account for the decolorising agent of its weight 15-25%, the stir process at 70-80 DEG C,
Stirring rate is 50-60r/min, and when the light transmittance of oil tea shell hydrolyzate reaches 85% or more, the decoloration of oil tea shell is collected in filtering
Hydrolyzate, it is spare；
(10), neutralize: being slowly added to the buck that weight concentration is 5-10% into oil tea shell decoloration hydrolyzate, side edged stirs, to oil
When the pH value of tea shell decoloration hydrolyzate reaches 6.0-6.5, oil tea shell neutralizing hydrolysis liquid is obtained, it is spare；
(11), mix: oil tea shell slag being digested into Aqueous extracts and oil tea shell neutralizing hydrolysis liquid mixes, it is naturally quiet to put 4-8h, mistake after stirring evenly
Filter, obtains oil tea shell mixed hydrolysis liquid, spare；
(12), cross column: oil tea shell mixed hydrolysis liquid is heated to 35-45 DEG C, cross anion exchange resin, flow velocity 15- while hot
28L/h collects anion exchange resin and crosses column liquid；Then anion exchange resin is crossed into column liquid and crosses cation exchange resin, flowed
Speed is 10-20L/h, collects cation exchange resin and crosses column liquid；Cation exchange resin is crossed into column liquid again and is heated to 50-60 DEG C,
S-330 type macroporous absorbent resin is crossed, flow velocity 35-50L/h collects macroporous absorbent resin and crosses column liquid, spare；
The anion exchange resin is strong-base anion-exchange resin, and the cation exchange resin is Subacidity cation
Exchanger resin；
(13), it is concentrated: macroporous absorbent resin is crossed in column liquid investment inspissator, in the item that temperature is 50-60 DEG C, pressure is 1-5KPa
Under part, the 1/8-1/5 of concentration to original volume obtains concentrated column liquid, spare；
(14), freeze: concentrated column liquid is transferred in freezer, quiet at 0-6 DEG C to put 5-8h, supernatant liquid is collected in filtering；Again to
It is slowly added to the edible ethanol that volumetric concentration is 90% or more in supernatant liquid, reaches the volumetric concentration of the ethyl alcohol in supernatant liquid
It is then, quiet in freezer to put to no Precipitation, filtering to 45-65%, precipitating is collected, it is spare；
(15), hydrogenate: the clear water of precipitating equivalent weight is dissolved, while the hydrogenation catalyst for accounting for Sediment weight 3-5% is added, stir
It is even；Then pressure is 5-10MPa, temperature is 120-150 DEG C, the rate that is passed through of hydrogen is 1-2.5m360- is handled under/h
75min, the xylitol liquid after must hydrogenating are spare；
(16), crystallize: xylitol liquid is transferred in freezer, while the edible ethanol for being 95% or more with volumetric concentration adjusts xylose
Concentration of alcohol in alcohol liquid is 65% or more, then, quiet to put to no Precipitation, filtering, collects xylitol precipitating；Then, will
Xylitol precipitating deionized water dissolving, filtering, then through drying, crushing to get xylitol.
2. the method for preparing xylitol with oil tea shell according to claim 1, it is characterised in that: hair described in fermentation procedure
Ferment agent is by calcium sulfate, sorghum flour, cellulase, saccharomycete by (0.2-0.35): the mixing of the weight ratio of (4-6): 0.2:1 and
At.
3. the method for preparing xylitol with oil tea shell according to claim 1, it is characterised in that: acid described in hydrolyzing process
Water is one of hydrochloric acid, sulfuric acid, oxalic acid or a variety of aqueous solutions, when to be two or more, the weight such as the ratio of each component is
Part or other ratios.
4. the method for preparing xylitol with oil tea shell according to claim 1, it is characterised in that: in hydrolyzing process, Bian Jia
Hot side stirring, stirring rate 15-25r/min.
5. the method for preparing xylitol with oil tea shell according to claim 1, it is characterised in that: taken off described in bleaching process
Toner be by neutral active charcoal particle, neutral diatomite, 80-120 mesh silica gel by 1:(1-1.5): the weight of (0.3-0.45)
Ratio preparation mixes.
6. the method for preparing xylitol with oil tea shell according to claim 1, it is characterised in that: alkali described in neutralization step
Water is one of sodium hydroxide, calcium hydroxide, sodium carbonate or a variety of aqueous solutions, and when to be two or more, each component is matched
Than for etc. parts by weight or other ratios.
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| CN109053375B (en) * | 2018-07-30 | 2021-05-11 | 南京林业大学 | Method for utilizing all components of oil-tea camellia shell raw material |
| CN110036827A (en) * | 2019-03-31 | 2019-07-23 | 贵州省贵福菌业发展有限公司 | A kind of oil tea shell breaking method |
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| CN101709309A (en) * | 2009-12-22 | 2010-05-19 | 安徽丰原发酵技术工程研究有限公司 | Method for combined fermentation of ethanol and xylitol |
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