CN107082827A - In the method for shell Raw material processing chitin - Google Patents
In the method for shell Raw material processing chitin Download PDFInfo
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- CN107082827A CN107082827A CN201710246714.4A CN201710246714A CN107082827A CN 107082827 A CN107082827 A CN 107082827A CN 201710246714 A CN201710246714 A CN 201710246714A CN 107082827 A CN107082827 A CN 107082827A
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- shell
- sodium hydroxide
- hydroxide solution
- ultrasonically treated
- chitin
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
- C08B37/0024—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid beta-D-Glucans; (beta-1,3)-D-Glucans, e.g. paramylon, coriolan, sclerotan, pachyman, callose, scleroglucan, schizophyllan, laminaran, lentinan or curdlan; (beta-1,6)-D-Glucans, e.g. pustulan; (beta-1,4)-D-Glucans; (beta-1,3)(beta-1,4)-D-Glucans, e.g. lichenan; Derivatives thereof
- C08B37/0027—2-Acetamido-2-deoxy-beta-glucans; Derivatives thereof
- C08B37/003—Chitin, i.e. 2-acetamido-2-deoxy-(beta-1,4)-D-glucan or N-acetyl-beta-1,4-D-glucosamine; Chitosan, i.e. deacetylated product of chitin or (beta-1,4)-D-glucosamine; Derivatives thereof
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
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- Cosmetics (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
The invention discloses a kind of method with shell Raw material processing chitin, including：Step 1: shell is divided into two parts, first part of shell is ground into a diameter of 0.5 3cm bulk, second part of shell is ground into 0.1 0.7cm graininess；Step 2: first part of shell and second part of shell are remixed together, it is put into water and carries out ultrasonically treated, add citric acid solution, be further continued for ultrasonically treated；When ultrasonically treated twice, cotton fibre is put into, the length of the cotton fibre is 1 5cm, a diameter of 0.02~0.06mm；Step 3: soaking block shell 30 40 hours with sodium hydroxide solution, the process soaked with sodium hydroxide solution is divided into two stages, and first stage soaks 20 minutes, and remaining time carries out the immersion of second stage；Again block shell is soaked with hydrochloric acid solution 24 hours.The present invention improves the extraction efficiency to chitin in shell, and the ash content of chitin is few.
Description
Technical field
The present invention relates to a kind of method with shell Raw material processing chitin.
Background technology
Chitin, also known as chitin, chitin, chitin, glutelin, bright angle glutelin, chitin, crab shell are plain, insoluble
Property chitin etc., entitled poly- β-(the Isosorbide-5-Nitrae) -2- acetamidos -2-deoxy-D-glucose molecular formula of chemistry is (C8H15NO6) n, is
The only naturally alkaline polysaccharide found so far, element is widely present in shrimp, the crust of crab of Arthropoda Crustacea animal, and it has
Have nontoxic, tasteless, alkaline-resisting, heat-resisting, sun-proof, it is corrosion-resistant, resistance to the features such as damage by worms, be widely used in weaving, print and dye, papermaking, food,
The fields such as medicine, cosmetics, fruit freshness preserving, environmental protection.But current chitin extraction technology to the extraction efficiency of chitin also not
Enough height, cause the extraction cost of chitin to be difficult to decline.
The content of the invention
For above-mentioned technical problem, the present invention has designed and developed that a kind of recovery rate is high, and impurity is few to be added with shell raw material
The method of work chitin.
The technical scheme that the present invention is provided is：
A kind of method with shell Raw material processing chitin, including：
Step 1: shell is divided into two parts, the mass ratio of first part of shell and second part of shell is 20-25:1, by first
Part shell is ground into a diameter of 0.5-3cm bulk, and second part of shell is ground into 0.1-0.7cm graininess；
Step 2: first part of shell and second part of shell are remixed together, it is put into water and carries out ultrasonically treated 20-40
Minute, citric acid solution is added afterwards, is further continued for ultrasonically treated 40-60 minutes, a reservation bulk shell after processing terminates, is used
Clear water is cleaned to neutrality；Wherein, when ultrasonically treated twice, cotton fibre is put into, the length of the cotton fibre is 1-
5cm, a diameter of 0.02~0.06mm；
Step 3: soak block shell 30-40 hours with sodium hydroxide solution, wherein, soaked with sodium hydroxide solution
Process is divided into two stages, and first stage soaks 20 minutes, and the concentration of sodium hydroxide solution used is 12mol/L, when remaining
Between carry out the immersion of second stage, the concentration of sodium hydroxide solution used is 5mol/L；Cleaned with clear water to neutrality, then use salt
Acid solution immersion block shell 2-4 hours, is finally cleaned to neutrality with clear water.
Preferably, it is described with the method for shell Raw material processing chitin, in the step one, the step one
In, the mass ratio of first part of shell and second part of shell is 20:1.
Preferably, it is described with the method for shell Raw material processing chitin, in the step one, by first part of shell
A diameter of 0.5-1cm bulk is ground into, second part of shell is ground into 0.1-0.2cm graininess.
Preferably, it is described with the method for shell Raw material processing chitin, in the step 2, by first part of shell
Together with being remixed with second part of shell, it is put into water and carries out ultrasonically treated 40 minutes, citric acid solution is added afterwards, followed by
It is continuous ultrasonically treated 60 minutes.
Preferably, it is described with the method for shell Raw material processing chitin, it is molten with sodium hydroxide in the step 3
The block shell of immersion bubble 40 hours, is cleaned to neutrality with clear water, then soaks block shell 4 hours with hydrochloric acid solution.
Method of the present invention with shell Raw material processing chitin is extracted to the chitin in shell, passes through essence
Extraction process is really set, the extraction efficiency to chitin in shell is improved, and the impurity of the chitin finally extracted is few, ash content
It is few.
Embodiment
The present invention is described in further detail below, to make those skilled in the art being capable of evidence with reference to specification word
To implement.
The present invention provides a kind of method with shell Raw material processing chitin, including：
Step 1: shell is divided into two parts, the mass ratio of first part of shell and second part of shell is 20-25:1, by first
Part shell is ground into a diameter of 0.5-3cm bulk, and second part of shell is ground into 0.1-0.7cm graininess；
Step 2: first part of shell and second part of shell are remixed together, it is put into water and carries out ultrasonically treated 20-40
Minute, citric acid solution is added afterwards, is further continued for ultrasonically treated 40-60 minutes, a reservation bulk shell after processing terminates, is used
Clear water is cleaned to neutrality；Wherein, when ultrasonically treated twice, cotton fibre is put into, the length of the cotton fibre is 1-
5cm, a diameter of 0.02~0.06mm；
Step 3: soak block shell 30-40 hours with sodium hydroxide solution, wherein, soaked with sodium hydroxide solution
Process is divided into two stages, and first stage soaks 20 minutes, and the concentration of sodium hydroxide solution used is 12mol/L, when remaining
Between carry out the immersion of second stage, the concentration of sodium hydroxide solution used is 5mol/L；Cleaned with clear water to neutrality, then use salt
Acid solution immersion block shell 2-4 hours, is finally cleaned to neutrality with clear water.
The present invention shell is divided into two parts, first part of shell is the part for wanting chitin extraction, be ground into diameter compared with
Big bulk, second part of shell is then ground into 0.1-0.7cm graininess, in ultrasound, by first part of shell and second portion of shellfish
Shell is mixed, graininess shell can the block shell of continuous frictional impact surface, farthest remove block shell table
The impurity in face.New impurity will not be brought by being additionally, since graininess shell.After ultrasonically treated end, graininess shell is filtered off
Should not, only retain block shell.Soaked 30-40 hours by sodium hydroxide solution again afterwards, hydrochloric acid solution soaks 2-4 hours,
Finally obtain recovery rate high, the few chitin of impurity.
It is divided into two stages in the process soaked with sodium hydroxide solution to carry out, sodium hydroxide solution used in first stage
Concentration it is higher, soak time is short, and the impurity in shell can be decomposed rapidly, and effectively softens shell, and second stage enters again
The prolonged immersion of row, thoroughly decomposes impurity.
In step 2, when carrying out ultrasonically treated, cotton fibre helps to remove the impurity on block shell, but not mistake
Many abrasion shells, will not cause chitin to be lost excessive.The diameter of cotton fibre is unsuitable excessive, and excessive then cotton fibre is super
The lower motion of sound effect is excessively slow, it is impossible to play a part of cleaning block shell.
Final recovery rate of the invention can reach 90%, and ash content can be reduced to less than 0.30%.
Preferably, it is described with the method for shell Raw material processing chitin, in the step one, the step one
In, the mass ratio of first part of shell and second part of shell is 20:1.
Preferably, it is described with the method for shell Raw material processing chitin, in the step one, by first part of shell
A diameter of 0.5-1cm bulk is ground into, second part of shell is ground into 0.1-0.2cm graininess.
Preferably, it is described with the method for shell Raw material processing chitin, in the step 2, by first part of shell
Together with being remixed with second part of shell, it is put into water and carries out ultrasonically treated 40 minutes, citric acid solution is added afterwards, followed by
It is continuous ultrasonically treated 60 minutes.
Preferably, it is described with the method for shell Raw material processing chitin, it is molten with sodium hydroxide in the step 3
The block shell of immersion bubble 40 hours, is cleaned to neutrality with clear water, then soaks block shell 4 hours with hydrochloric acid solution.
Embodiment one
Step 1: shell is divided into two parts, the mass ratio of first part of shell and second part of shell is 20:1, by first portion of shellfish
Shell is ground into a diameter of 0.5-1cm bulk, and second part of shell is ground into 0.1-0.2cm graininess；
Step 2: first part of shell and second part of shell are remixed together, it is put into water and carries out ultrasonically treated 40 points
Clock, adds citric acid solution afterwards, is further continued for ultrasonically treated 60 minutes, and processing only retains block shell after terminating, and uses clear water
Clean to neutrality；Wherein, when ultrasonically treated twice, cotton fibre is put into, the length of the cotton fibre is 1-5cm, directly
Footpath is 0.02~0.06mm；
Step 3: soak block shell 40 hours with sodium hydroxide solution, wherein, the process soaked with sodium hydroxide solution
It is divided into two stages, first stage soaks 20 minutes, the concentration of sodium hydroxide solution used is 12mol/L, and remaining time enters
The immersion of row second stage, the concentration of sodium hydroxide solution used is 5mol/L；Cleaned with clear water to neutrality, then it is molten with hydrochloric acid
The block shell of immersion bubble 4 hours, is finally cleaned to neutrality with clear water.
The embodiment is 90% to the recovery rate of chitin, and ash content is 0.25%.
Embodiment two
Step 1: shell is divided into two parts, the mass ratio of first part of shell and second part of shell is 25:1, by first portion of shellfish
Shell is ground into a diameter of 0.5-3cm bulk, and second part of shell is ground into 0.1-0.7cm graininess；
Step 2: first part of shell and second part of shell are remixed together, it is put into water and carries out ultrasonically treated 40 points
Clock, adds citric acid solution afterwards, is further continued for ultrasonically treated 60 minutes, and processing only retains block shell after terminating, and uses clear water
Clean to neutrality；Wherein, when ultrasonically treated twice, cotton fibre is put into, the length of the cotton fibre is 1-5cm, directly
Footpath is 0.02~0.06mm；
Step 3: soak block shell 40 hours with sodium hydroxide solution, wherein, the process soaked with sodium hydroxide solution
It is divided into two stages, first stage soaks 20 minutes, the concentration of sodium hydroxide solution used is 12mol/L, and remaining time enters
The immersion of row second stage, the concentration of sodium hydroxide solution used is 5mol/L；Cleaned with clear water to neutrality, then it is molten with hydrochloric acid
The block shell of immersion bubble 4 hours, is finally cleaned to neutrality with clear water.
The embodiment is 90% to the recovery rate of chitin, and ash content is 0.24%.
Embodiment three
Step 1: shell is divided into two parts, the mass ratio of first part of shell and second part of shell is 25:1, by first portion of shellfish
Shell is ground into a diameter of 0.5-3cm bulk, and second part of shell is ground into 0.1-0.7cm graininess；
Step 2: first part of shell and second part of shell are remixed together, it is put into water and carries out ultrasonically treated 20 points
Clock, adds citric acid solution afterwards, is further continued for ultrasonically treated 40 minutes, and processing only retains block shell after terminating, and uses clear water
Clean to neutrality；Wherein, when ultrasonically treated twice, cotton fibre is put into, the length of the cotton fibre is 1-5cm, directly
Footpath is 0.02~0.06mm；
Step 3: soak block shell 30 hours with sodium hydroxide solution, wherein, the process soaked with sodium hydroxide solution
It is divided into two stages, first stage soaks 20 minutes, the concentration of sodium hydroxide solution used is 12mol/L, and remaining time enters
The immersion of row second stage, the concentration of sodium hydroxide solution used is 5mol/L；Cleaned with clear water to neutrality, then it is molten with hydrochloric acid
The block shell of immersion bubble 2 hours, is finally cleaned to neutrality with clear water.
The embodiment is 91% to the recovery rate of chitin, and ash content is 0.23%.
Example IV
Step 1: shell is divided into two parts, the mass ratio of first part of shell and second part of shell is 22:1, by first portion of shellfish
Shell is ground into a diameter of 0.5-1cm bulk, and second part of shell is ground into 0.1-0.4cm graininess；
Step 2: first part of shell and second part of shell are remixed together, it is put into water and carries out ultrasonically treated 20 points
Clock, adds citric acid solution afterwards, is further continued for ultrasonically treated 40 minutes, and processing only retains block shell after terminating, and uses clear water
Clean to neutrality；Wherein, when ultrasonically treated twice, cotton fibre is put into, the length of the cotton fibre is 1-5cm, directly
Footpath is 0.02~0.06mm；
Step 3: soak block shell 30 hours with sodium hydroxide solution, wherein, the process soaked with sodium hydroxide solution
It is divided into two stages, first stage soaks 20 minutes, the concentration of sodium hydroxide solution used is 12mol/L, and remaining time enters
The immersion of row second stage, the concentration of sodium hydroxide solution used is 5mol/L；Cleaned with clear water to neutrality, then it is molten with hydrochloric acid
The block shell of immersion bubble 2 hours, is finally cleaned to neutrality with clear water.
The embodiment is 92% to the recovery rate of chitin, and ash content is 0.24%.
Embodiment five
Step 1: shell is divided into two parts, the mass ratio of first part of shell and second part of shell is 25:1, by first portion of shellfish
Shell is ground into a diameter of 0.5-3cm bulk, and second part of shell is ground into 0.1-0.7cm graininess；
Step 2: first part of shell and second part of shell are remixed together, it is put into water and carries out ultrasonically treated 25 points
Clock, adds citric acid solution afterwards, is further continued for ultrasonically treated 45 minutes, and processing only retains block shell after terminating, and uses clear water
Clean to neutrality；Wherein, when ultrasonically treated twice, cotton fibre is put into, the length of the cotton fibre is 1-5cm, directly
Footpath is 0.02~0.06mm；
Step 3: soak block shell 40 hours with sodium hydroxide solution, wherein, the process soaked with sodium hydroxide solution
It is divided into two stages, first stage soaks 20 minutes, the concentration of sodium hydroxide solution used is 12mol/L, and remaining time enters
The immersion of row second stage, the concentration of sodium hydroxide solution used is 5mol/L；Cleaned with clear water to neutrality, then it is molten with hydrochloric acid
The block shell of immersion bubble 4 hours, is finally cleaned to neutrality with clear water.
The embodiment is 91% to the recovery rate of chitin, and ash content is 0.22%.
Embodiment six
Step 1: shell is divided into two parts, the mass ratio of first part of shell and second part of shell is 20:1, by first portion of shellfish
Shell is ground into a diameter of 0.5-3cm bulk, and second part of shell is ground into 0.1-0.7cm graininess；
Step 2: first part of shell and second part of shell are remixed together, it is put into water and carries out ultrasonically treated 30 points
Clock, adds citric acid solution afterwards, is further continued for ultrasonically treated 50 minutes, and processing only retains block shell after terminating, and uses clear water
Clean to neutrality；Wherein, when ultrasonically treated twice, cotton fibre is put into, the length of the cotton fibre is 1-5cm, directly
Footpath is 0.02~0.06mm；
Step 3: soak block shell 40 hours with sodium hydroxide solution, wherein, the process soaked with sodium hydroxide solution
It is divided into two stages, first stage soaks 20 minutes, the concentration of sodium hydroxide solution used is 12mol/L, and remaining time enters
The immersion of row second stage, the concentration of sodium hydroxide solution used is 5mol/L；Cleaned with clear water to neutrality, then it is molten with hydrochloric acid
The block shell of immersion bubble 4 hours, is finally cleaned to neutrality with clear water.
The embodiment is 90% to the recovery rate of chitin, and ash content is 0.23%.
Embodiment seven
Step 1: shell is divided into two parts, the mass ratio of first part of shell and second part of shell is 23:1, by first portion of shellfish
Shell is ground into a diameter of 2-3cm bulk, and second part of shell is ground into 0.4-0.7cm graininess；
Step 2: first part of shell and second part of shell are remixed together, it is put into water and carries out ultrasonically treated 30 points
Clock, adds citric acid solution afterwards, is further continued for ultrasonically treated 45 minutes, and processing only retains block shell after terminating, and uses clear water
Clean to neutrality；Wherein, when ultrasonically treated twice, cotton fibre is put into, the length of the cotton fibre is 1-5cm, directly
Footpath is 0.02~0.06mm；
Step 3: soak block shell 35 hours with sodium hydroxide solution, wherein, the process soaked with sodium hydroxide solution
It is divided into two stages, first stage soaks 20 minutes, the concentration of sodium hydroxide solution used is 12mol/L, and remaining time enters
The immersion of row second stage, the concentration of sodium hydroxide solution used is 5mol/L；Cleaned with clear water to neutrality, then it is molten with hydrochloric acid
The block shell of immersion bubble 3 hours, is finally cleaned to neutrality with clear water.
The embodiment is 90% to the recovery rate of chitin, and ash content is 0.23%.
Embodiment eight
Step 1: shell is divided into two parts, the mass ratio of first part of shell and second part of shell is 25:1, by first portion of shellfish
Shell is ground into a diameter of 0.5-3cm bulk, and second part of shell is ground into 0.1-0.7cm graininess；
Step 2: first part of shell and second part of shell are remixed together, it is put into water and carries out ultrasonically treated 40 points
Clock, adds citric acid solution afterwards, is further continued for ultrasonically treated 55 minutes, and processing only retains block shell after terminating, and uses clear water
Clean to neutrality；Wherein, when ultrasonically treated twice, cotton fibre is put into, the length of the cotton fibre is 1-5cm, directly
Footpath is 0.02~0.06mm；
Step 3: soak block shell 35 hours with sodium hydroxide solution, wherein, the process soaked with sodium hydroxide solution
It is divided into two stages, first stage soaks 20 minutes, the concentration of sodium hydroxide solution used is 12mol/L, and remaining time enters
The immersion of row second stage, the concentration of sodium hydroxide solution used is 5mol/L；Cleaned with clear water to neutrality, then it is molten with hydrochloric acid
The block shell of immersion bubble 4 hours, is finally cleaned to neutrality with clear water.
The embodiment is 91% to the recovery rate of chitin, and ash content is 0.23%.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, the present invention is not limited
In specific details.
Claims (5)
1. a kind of method with shell Raw material processing chitin, it is characterised in that including：
Step 1: shell is divided into two parts, the mass ratio of first part of shell and second part of shell is 20-25:1, by first portion of shellfish
Shell is ground into a diameter of 0.5-3cm bulk, and second part of shell is ground into 0.1-0.7cm graininess；
Step 2: first part of shell and second part of shell are remixed together, it is put into water and carries out ultrasonically treated 20-40 points
Clock, adds citric acid solution afterwards, is further continued for ultrasonically treated 40-60 minutes, and processing only retains block shell after terminating, with clear
Water is cleaned to neutrality；Wherein, when ultrasonically treated twice, cotton fibre is put into, the length of the cotton fibre is 1-5cm,
A diameter of 0.02~0.06mm；
Step 3: soak block shell 30-40 hours with sodium hydroxide solution, wherein, the process soaked with sodium hydroxide solution
It is divided into two stages, first stage soaks 20 minutes, the concentration of sodium hydroxide solution used is 12mol/L, and remaining time enters
The immersion of row second stage, the concentration of sodium hydroxide solution used is 5mol/L；Cleaned with clear water to neutrality, then it is molten with hydrochloric acid
Immersion bubble block shell 2-4 hours, is finally cleaned to neutrality with clear water.
2. the method as claimed in claim 1 with shell Raw material processing chitin, it is characterised in that in the step one, institute
State in step one, the mass ratio of first part of shell and second part of shell is 20:1.
3. the method as claimed in claim 1 with shell Raw material processing chitin, it is characterised in that in the step one, will
First part of shell is ground into a diameter of 0.5-1cm bulk, and second part of shell is ground into 0.1-0.2cm graininess.
4. the method as claimed in claim 1 with shell Raw material processing chitin, it is characterised in that in the step 2, will
First part of shell and second part of shell are remixed together, are put into water and are carried out ultrasonically treated 40 minutes, lemon is added afterwards
Acid solution, is further continued for ultrasonically treated 60 minutes.
5. the method as claimed in claim 1 with shell Raw material processing chitin, it is characterised in that in the step 3, is used
The block shell of sodium hydroxide solution immersion 40 hours, is cleaned to neutrality with clear water, then small with the block shell 4 of hydrochloric acid solution immersion
When.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710246714.4A CN107082827A (en) | 2017-04-16 | 2017-04-16 | In the method for shell Raw material processing chitin |
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| CN201710246714.4A CN107082827A (en) | 2017-04-16 | 2017-04-16 | In the method for shell Raw material processing chitin |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109851690A (en) * | 2019-03-14 | 2019-06-07 | 福州大学 | A kind of preparation method of shell pearl layer chitin |
| CN113647400A (en) * | 2021-08-31 | 2021-11-16 | 广东中迅农科股份有限公司 | Acaricidal composition and application thereof |
-
2017
- 2017-04-16 CN CN201710246714.4A patent/CN107082827A/en active Pending
Non-Patent Citations (2)
| Title |
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| 刘宏喜: "蚝壳甲壳素的提取及其衍生物在印染中的应用", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
| 章超桦 等: "《贝类加工与利用（第1版）》", 30 November 2014, 中国轻工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109851690A (en) * | 2019-03-14 | 2019-06-07 | 福州大学 | A kind of preparation method of shell pearl layer chitin |
| CN109851690B (en) * | 2019-03-14 | 2021-11-02 | 福州大学 | Preparation method of shell nacreous layer chitin |
| CN113647400A (en) * | 2021-08-31 | 2021-11-16 | 广东中迅农科股份有限公司 | Acaricidal composition and application thereof |
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