CN105440165B - The method that microwave radiation technology lye extracts the xylan in cotton seed hulls - Google Patents
The method that microwave radiation technology lye extracts the xylan in cotton seed hulls Download PDFInfo
- Publication number
- CN105440165B CN105440165B CN201510684307.2A CN201510684307A CN105440165B CN 105440165 B CN105440165 B CN 105440165B CN 201510684307 A CN201510684307 A CN 201510684307A CN 105440165 B CN105440165 B CN 105440165B
- Authority
- CN
- China
- Prior art keywords
- cotton seed
- seed hulls
- xylan
- extraction
- dry
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of methods that microwave radiation technology lye extracts the xylan in cotton seed hulls, include the following steps：Deimpurity cotton seed hulls will be gone to crush, then dry to obtain dry cotton seed hulls particle；It is that leaching liquor extracts dry cotton seed hulls particle, while being handled with microwave with sodium hydroxide solution；Wherein the mass percentage concentration of sodium hydroxide solution is 12% 16%, and extraction time is 6 8min, and the mass volume ratio of dry cotton seed hulls particle and aqueous slkali is 1g：(15‑20)mL；The power of microwave is 400W 560W；Liquid after extraction is centrifuged, supernatant is taken；The absolute ethyl alcohol of 34 times of volumes is taken to be added in supernatant, alcohol precipitation；Liquid vacuum after alcohol precipitation is filtered, with distilled water flushing 45 times when suction filtration；Precipitation is dried.Recovery rate of the present invention is high, and extraction time is short.
Description
Technical field
The present invention relates to xylan extraction technical field, in specifically a kind of microwave radiation technology lye extraction cotton seed hulls
The method of xylan.
Background technology
Xylan is the main component of hemicellulose in the plant fiber for be widely present in nature, it by xylose through β -1,
4 glucosides key connections form.Usual xylan is present in the cell wall of plant.It can produce what the world was badly in need of in the market through enzyme hydrolysis
The functional food such as xylo-oligosaccharide.
Currently, the extraction of xylan mainly has acidity extraction, high-temperature cooking process extraction and alkalinity extraction.Wherein acidity extraction
It can be mainly dissolved in dilute acid soln under the high temperature conditions using the hemicellulose in plant tissue, make main chain and the side of xylan
Chain separation is hydrolyzed into the lower soluble xylan of the degree of polymerization, to extract xylan from plant fiber.
High-temperature cooking process is at 150 DEG C -- within the temperature range of 250 DEG C, hemicellulose can be during raw material heats not
Disconnected degradation forms a variety of acid, these acid can have facilitation to the leaching of xylan.
Sour corrosive equipment in acidity extraction and high-temperature cooking process extraction, so industrially seldom in this way.
In addition, thermophilic digestion energy consumption is more, economic benefit is low.
Alkalinity extraction is one of most common method of xylan to be extracted from fiber wastes, but xylan extraction rate is less
Ideal, and extraction time is longer.
Invention content
In view of this, an embodiment of the present invention provides the sides that a kind of microwave radiation technology lye extracts the xylan in cotton seed hulls
Method.Main purpose is to improve the recovery rate of xylan.
In order to achieve the above objectives, present invention generally provides following technical solutions：
On the one hand, a kind of method that the xylan in cotton seed hulls is extracted an embodiment of the present invention provides microwave radiation technology lye,
Include the following steps：
Deimpurity cotton seed hulls will be gone to crush, then dry to obtain dry cotton seed hulls particle；
It is that leaching liquor extracts dry cotton seed hulls particle, while being handled with microwave with sodium hydroxide solution；Its
The mass percentage concentration of middle sodium hydroxide solution is 12%-16%, extraction time 6-8min, dries cotton seed hulls particle and alkali soluble
The mass volume ratio of liquid is 1g：(15-20)mL；The power of microwave is 400W-560W；
Liquid after extraction is centrifuged, supernatant is taken；
The absolute ethyl alcohol of 3-4 times of volume is taken to be added in supernatant, alcohol precipitation；
Liquid vacuum after alcohol precipitation is filtered, with distilled water flushing 4-5 times when suction filtration；
Precipitation is dried.
Preferably, the mass percentage concentration of sodium hydroxide solution is 12%, extraction time 6min, dry cotton seed hulls
The mass volume ratio of grain and aqueous slkali is 1g：15mL；Microwave power is 400W.
Preferably, the liquid after extraction takes supernatant with centrifuge is centrifuged with the rotating speed of 5000d/min after centrifuging 15min
Liquid.
Preferably, the alcohol precipitation time is 8 hours.
Preferably, drying temperature when drying precipitation is 80 DEG C.
Compared with prior art, the beneficial effects of the present invention are：
The method recovery rate of xylan in the microwave radiation technology lye extraction cotton seed hulls of the embodiment of the present invention is high, extraction time
It is short.
Xylan extraction technological process is as follows：
Cotton seed hulls → crushing → sieving → drying → ultrasound extraction → centrifugation → alcohol precipitation → vacuum filtration → drying
Specific implementation mode
With reference to specific embodiment, present invention is further described in detail, but not as a limitation of the invention.
In following the description, what different " embodiment " or " embodiment " referred to is not necessarily the same embodiment.In addition, one or more are implemented
Special characteristic, structure or feature in example can be combined by any suitable form.
Embodiment 1
The method that microwave radiation technology lye extracts the xylan in cotton seed hulls, specifically comprises the following steps：
Pretreatment：Pick out the campanulaceae in cotton seed hulls, the impurity such as stone；
It pulverizes and sieves：Going deimpurity cotton seed hulls to smash it through 80 mesh sieve, lye is made to be contacted with cotton seed hulls fully.
Drying：Cotton seed hulls after 80 DEG C of dries pulverizings；
Microwave radiation technology lye extracts：10g cotton seed hulls is weighed, the sodium hydroxide that 150mL mass percentage concentrations are 12% is added
Solution, microwave power 400w extract 6min, at this point, the recovery rate highest of xylan.
It centrifuges：The liquid that extraction obtains is centrifuged, centrifuge speed 5000d/min, centrifuges 15min
After take supernatant；
Alcohol precipitation：Absolute ethyl alcohol is added in supernatant and carries out alcohol precipitation, the volume of the absolute ethyl alcohol of addition is supernatant
3-4 times, the alcohol precipitation time is 8 hours；
Vacuum filtration：Liquid after alcohol precipitation is filtered by vacuum, with distilled water flushing 4-5 times when suction filtration；
Drying：Gained precipitation is put into drying xylan in 80 DEG C of baking ovens.
The recovery rate of the present embodiment is 43.23%.
Embodiment 2
The present embodiment is different only in that aqueous slkali is the NaOH solution that mass percentage is 16% with embodiment 1.This reality
The recovery rate for applying example is 38.17%.
Embodiment 3
The present embodiment is different only in that the solid-to-liquid ratio (g/mL) of cotton seed hulls and aqueous slkali is 1 with embodiment 1：20.This implementation
The recovery rate of example is 37.67%.
Embodiment 4
The present embodiment is different only in that microwave power is 560W with embodiment 1.The recovery rate of the present embodiment is 42.77%.
Embodiment 5
The present embodiment is different only in that extraction time is 8min with embodiment 1.The recovery rate of the present embodiment is 37.67%.
Above example is only exemplary embodiment of the present invention, is not used in the limitation present invention, protection scope of the present invention
It is defined by the claims.Those skilled in the art can within the spirit and scope of the present invention make respectively the present invention
Kind modification or equivalent replacement, this modification or equivalent replacement also should be regarded as being within the scope of the present invention.
Claims (5)
1. the method that microwave radiation technology lye extracts the xylan in cotton seed hulls, includes the following steps：
Deimpurity cotton seed hulls will be gone to crush, then dry to obtain dry cotton seed hulls particle；
It is that leaching liquor extracts dry cotton seed hulls particle, while being handled with microwave with sodium hydroxide solution；Wherein hydrogen
The mass percentage concentration of sodium hydroxide solution is 12%-16%, extraction time 6-8min, dry cotton seed hulls particle and aqueous slkali
Mass volume ratio is 1g：(15-20)mL；The power of microwave is 400W-560W；
Liquid after extraction is centrifuged, supernatant is taken；
The absolute ethyl alcohol of 3-4 times of volume is taken to be added in supernatant, alcohol precipitation；
Liquid vacuum after alcohol precipitation is filtered, with distilled water flushing 4-5 times when suction filtration；
Precipitation is dried.
2. the method for the xylan in microwave radiation technology lye extraction cotton seed hulls according to claim 1, which is characterized in that hydrogen
The mass percentage concentration of sodium hydroxide solution is 12%, extraction time 6min, the mass body of dry cotton seed hulls particle and aqueous slkali
Product is than being 1g：15mL；Microwave power is 400W.
3. the method for the xylan in microwave radiation technology lye extraction cotton seed hulls according to claim 1, which is characterized in that leaching
Liquid after carrying, with the rotating speed of 5000d/min, supernatant is taken after centrifuging 15min with centrifugation centrifuge.
4. the method for the xylan in microwave radiation technology lye extraction cotton seed hulls according to claim 1, which is characterized in that alcohol
The heavy time is 8 hours.
5. the method for the xylan in microwave radiation technology lye extraction cotton seed hulls according to claim 1, which is characterized in that dry
Drying temperature when dry precipitation is 80 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510684307.2A CN105440165B (en) | 2015-10-20 | 2015-10-20 | The method that microwave radiation technology lye extracts the xylan in cotton seed hulls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510684307.2A CN105440165B (en) | 2015-10-20 | 2015-10-20 | The method that microwave radiation technology lye extracts the xylan in cotton seed hulls |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105440165A CN105440165A (en) | 2016-03-30 |
| CN105440165B true CN105440165B (en) | 2018-09-04 |
Family
ID=55550843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510684307.2A Expired - Fee Related CN105440165B (en) | 2015-10-20 | 2015-10-20 | The method that microwave radiation technology lye extracts the xylan in cotton seed hulls |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105440165B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107936142B (en) * | 2017-11-14 | 2020-04-28 | 浙江工业大学 | Method for extracting xylan from pecan shells |
| CN108729285B (en) * | 2018-05-08 | 2021-04-09 | 昆明理工大学 | Method for extracting bagasse hemicellulose through microwave-puffing |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1431231A (en) * | 2003-01-29 | 2003-07-23 | 广西壮族自治区中国科学院广西植物研究所 | Method for extracting xylan from woody fiber material |
| CN101597629B (en) * | 2009-07-21 | 2011-08-31 | 北京工商大学 | Method for preparing xyio-oligosacchandes by using ultrasonic to treat agricultural wastes |
| CN103333932A (en) * | 2012-12-29 | 2013-10-02 | 青岛蔚蓝生物集团有限公司 | A method for preparing xylooligosaccharide |
| CN104774887A (en) * | 2015-04-13 | 2015-07-15 | 许昌学院 | Preparation method of corncob xylooligosaccharide |
-
2015
- 2015-10-20 CN CN201510684307.2A patent/CN105440165B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN105440165A (en) | 2016-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100999739B (en) | Process for treating straw by vapour explosive and alkaline oxydol oxydizing | |
| CN105061622B (en) | A kind of extraction process of tea polysaccharide | |
| CN102212976B (en) | Method for separating bagasse cellulose from lignin | |
| Pang et al. | Effects of combination of steam explosion and microwave irradiation (SE–MI) pretreatment on enzymatic hydrolysis, sugar yields and structural properties of corn stover | |
| CN106011199B (en) | Pretreatment method of crop straws | |
| CN105061621B (en) | A kind of ultrasonic extracting method of Polysaccharides from Rosa roxburghii | |
| CN106702802B (en) | A kind of method that ionic liquid-sulfamic acid binary system extracts high pure cellulose from stalk | |
| WO2017049739A1 (en) | Method for improving enzymolysis efficiency of lignocellulosic biomass | |
| CN102391390A (en) | Tobacco extraction method based on steam explosion | |
| CN108467437A (en) | A kind of preparation method of Phellinus polysaccharide | |
| CN108948227A (en) | A kind of method that high-voltage pulse extracts okra pectin | |
| CN103641924A (en) | Method for extraction of Auricularia auricula polysaccharide from Auricularia auricula | |
| CN103255659A (en) | Method for processing lignocellulosic biomass at constant pressure with ammonia and diluted alkali combined | |
| CN105440165B (en) | The method that microwave radiation technology lye extracts the xylan in cotton seed hulls | |
| CN105440155A (en) | Pectin extraction method | |
| CN105440166A (en) | Method used for extracting hemicellulose with low pigment content | |
| CN102304865A (en) | Method for extracting cellulose from tobacco | |
| JP6349518B2 (en) | Method for producing lignin degradation product | |
| CN103120249A (en) | Method for extracting peanut protein from high-temperature peanut meals | |
| CN103907938A (en) | Preparation method of jujube fruit residue dietary fiber | |
| CN104650264A (en) | Method for extracting inulin | |
| CN106749724A (en) | A kind of method for extracting Auricularia polysaccharide | |
| CN103636917A (en) | Method for extracting rice protein from rice residue by using hydraulic cavitation technology | |
| CN102260355B (en) | Method for extracting pectin based on tobacco | |
| CN108314748A (en) | A kind of aloe skin pectous extracting method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180904 Termination date: 20191020 |