CN108948436A - A kind of preparation method of the modified composite membrane of sodium alginate-pectin - Google Patents
A kind of preparation method of the modified composite membrane of sodium alginate-pectin Download PDFInfo
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- CN108948436A CN108948436A CN201810821417.2A CN201810821417A CN108948436A CN 108948436 A CN108948436 A CN 108948436A CN 201810821417 A CN201810821417 A CN 201810821417A CN 108948436 A CN108948436 A CN 108948436A
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- pectin
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- film
- composite membrane
- sodium alginate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/12—Chemical modification
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2305/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2301/00 or C08J2303/00
- C08J2305/04—Alginic acid; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2405/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2401/00 or C08J2403/00
- C08J2405/06—Pectin; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/05—Alcohols; Metal alcoholates
- C08K5/053—Polyhydroxylic alcohols
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Jellies, Jams, And Syrups (AREA)
Abstract
The invention discloses a kind of preparation methods of the modified composite membrane of sodium alginate-pectin, and steps are as follows: pectin being dissolved in distilled water and is sufficiently swollen, is stirred evenly, vacuum deaerator obtains pectin colloidal sol；Sodium alginate is dissolved in distilled water, is stirred evenly, vacuum deaerator obtains colorless and transparent sticky film liquid；Above two solution is mixed, add glycerol after stirring 2-3h and lipid be sufficiently stirred, after deaeration in culture dish casting film-forming, dry obtained sodium alginate-pectin composite membrane；After film to be composite dries completely, the CaCl for being 2% by mass fraction2Cross-linking agent solution pours into dry film, be crosslinked 4-6min after dry again to get.Compatibility between the modified composite membrane each component of sodium alginate-pectin of this method preparation is good, has excellent barrier property, mechanical performance and water repelling property, and the alternative conventional plastic film of the composite membrane is applied in green food packaging material.
Description
Technical field
The present invention relates to a kind of preparation methods of the modified composite membrane of sodium alginate-pectin.
Background technique
As food packaging causes the serious consumption problem of environmental pollution, the energy and people to the weight of food packaging safety
Depending on the degradable package material based on natural macromolecular material is increasingly becoming the hot spot of research in recent years.Natural polymer
Material is with edible natural substance such as polysaccharide, protein, cellulose etc. for raw material, has good degradability, gas permeability, peace
The features such as full property.Film dynamic performance, the moisture barrier property of the natural macromolecular material preparation of one-component are poor, and natural polysaccharide is high
Molecular material contains great amount of hydroxy group and other polar groups mostly, and hydrophily is strong, water repelling property is poor, these deficiencies limit its conduct
Membrane material in the practical application in various fields, to make its for commercial applications must also from the water resistance of film, hinder moist, mechanical strength
Etc. be further improved.Blending and modifying, which is combined into packaging material for food using a variety of substrates, makes its mutual supplement with each other's advantages, is to improve day
The simple and effective approach of right high molecular material performance, while Applied Physics, the processing technology of chemical modification are also to improve film items
The important means of performance.
Sodium alginate (SA) is a kind of natural macromolecule amylose, and the hydrosol has high viscosity and good film-forming property, and film is transparent
It is tough and tensile, at low cost, large-scale production is industrially formed, therefore be commonly used to do the substrate of packaging film.It is made using SA of raw material
Fresh-keeping film carbon dioxide transmission rate high oxygen transmitance it is low, can effectively extend the preservation time of food.But SA system
At thin flexible film it is inadequate, hinder it and further expand the application range as fresh-keeping film.Pectin (PEC) is a kind of line
Property flexible macromolecule, linear structure can assign film have the characteristics that it is soft and tough and tensile, pectin film have antibiotic property and degradability, mesh
Preceding pectin applies the research in packaging film less.Two kinds of molecular structures of SA and PEC are all long linear, and sky resistance is small, are blended in the two
Dispersion and stretching, extension are easy in film liquid, the film of formation is more excellent.
Summary of the invention
The purpose of the present invention is to provide a kind of preparation methods of the modified composite membrane of sodium alginate-pectin.
The present invention is realized by following technical solution:
A kind of preparation method of the modified composite membrane of sodium alginate-pectin, includes the following steps: 10-20 parts of pectin being dissolved in 65-75
It is sufficiently swollen, stirs evenly, vacuum deaerator obtains pectin colloidal sol in part distilled water；15-25 parts of sodium alginates are dissolved in 70-80 parts of steamings
Distilled water stirs evenly, vacuum deaerator, obtains colorless and transparent sticky film liquid；Above two solution is mixed, is added again after stirring 2-3h
Enter 8-14 parts of glycerol and 7-9 parts of lipids be sufficiently stirred, after deaeration in culture dish casting film-forming, dried in 25-35 DEG C and sea be made
Mosanom-pectin composite membrane；After film to be composite dries completely, the CaCl for being 2% by 40-50 parts of mass fractions2Cross-linking agent solution falls
Enter in dry film, be crosslinked 4-6min after dry again to get；Each raw material is parts by weight.
Preferably, in the preparation method, 2.5h is stirred.
Preferably, it in the preparation method, is dried in 30 DEG C.
Preferably, in the preparation method, it is crosslinked 5min.
The technology of the present invention effect:
This method is easy, quick, easy to operate, and the compatibility between the modified composite membrane each component of sodium alginate-pectin of preparation is good, tool
There are excellent barrier property, mechanical performance and water repelling property, the alternative conventional plastic film of the composite membrane is applied to green food packet
In package material.
Specific embodiment
Essentiality content of the invention is specifically introduced below with reference to embodiment.
Embodiment 1
A kind of preparation method of the modified composite membrane of sodium alginate-pectin, includes the following steps: for 15 parts of pectin to be dissolved in 70 parts of distillations
It is sufficiently swollen, stirs evenly in water, vacuum deaerator obtains pectin colloidal sol；20 parts of sodium alginates are dissolved in 75 parts of distilled water, stirring is equal
Even, vacuum deaerator obtains colorless and transparent sticky film liquid；Above two solution is mixed, adds 11 parts of glycerol after stirring 2.5h
Be sufficiently stirred with 8 parts of lipids, after deaeration in culture dish casting film-forming, obtained sodium alginate-pectin composite membrane is dried in 30 DEG C；
After film to be composite dries completely, the CaCl for being 2% by 45 parts of mass fractions2Cross-linking agent solution pours into dry film, is crosslinked after 5min again
It is secondary dry to get；Each raw material is parts by weight.
Embodiment 2
A kind of preparation method of the modified composite membrane of sodium alginate-pectin, includes the following steps: for 10 parts of pectin to be dissolved in 65 parts of distillations
It is sufficiently swollen, stirs evenly in water, vacuum deaerator obtains pectin colloidal sol；15 parts of sodium alginates are dissolved in 70 parts of distilled water, stirring is equal
Even, vacuum deaerator obtains colorless and transparent sticky film liquid；Above two solution is mixed, adds 8 parts of glycerol and 7 after stirring 2h
Part lipid is sufficiently stirred, after deaeration in culture dish casting film-forming, obtained sodium alginate-pectin composite membrane is dried in 25 DEG C；To
After composite membrane dries completely, the CaCl for being 2% by 40 parts of mass fractions2Cross-linking agent solution pours into dry film, is crosslinked after 4min again
Dry to get；Each raw material is parts by weight.
Embodiment 3
A kind of preparation method of the modified composite membrane of sodium alginate-pectin, includes the following steps: for 20 parts of pectin to be dissolved in 75 parts of distillations
It is sufficiently swollen, stirs evenly in water, vacuum deaerator obtains pectin colloidal sol；25 parts of sodium alginates are dissolved in 80 parts of distilled water, stirring is equal
Even, vacuum deaerator obtains colorless and transparent sticky film liquid；Above two solution is mixed, adds 14 parts of glycerol and 9 after stirring 3h
Part lipid is sufficiently stirred, after deaeration in culture dish casting film-forming, obtained sodium alginate-pectin composite membrane is dried in 35 DEG C；To
After composite membrane dries completely, the CaCl for being 2% by 50 parts of mass fractions2Cross-linking agent solution pours into dry film, is crosslinked after 6min again
Dry to get；Each raw material is parts by weight.
This method is easy, quick, easy to operate, the compatibility between the modified composite membrane each component of sodium alginate-pectin of preparation
It is good, there is excellent barrier property, mechanical performance and water repelling property, the alternative conventional plastic film of the composite membrane is applied to green
In packaging material for food.
Claims (4)
1. a kind of preparation method of the modified composite membrane of sodium alginate-pectin, it is characterised in that include the following steps: 10-20 parts
Pectin, which is dissolved in 65-75 parts of distilled water, to be sufficiently swollen, and is stirred evenly, vacuum deaerator obtains pectin colloidal sol；By 15-25 parts of sodium alginates
70-80 parts of distilled water are dissolved in, are stirred evenly, vacuum deaerator, colorless and transparent sticky film liquid is obtained；Above two solution is mixed,
Add 8-14 parts of glycerol after stirring 2-3h and 7-9 parts of lipids be sufficiently stirred, after deaeration in culture dish casting film-forming, in 25-
35 DEG C are dried obtained sodium alginate-pectin composite membrane；It is 2% by 40-50 parts of mass fractions after film to be composite dries completely
CaCl2Cross-linking agent solution pours into dry film, be crosslinked 4-6min after dry again to get；Each raw material is parts by weight.
2. preparation method according to claim 1, it is characterised in that: stirring 2.5h.
3. preparation method according to claim 1, it is characterised in that: dried in 30 DEG C.
4. preparation method according to claim 1, it is characterised in that: crosslinking 5min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810821417.2A CN108948436A (en) | 2018-07-24 | 2018-07-24 | A kind of preparation method of the modified composite membrane of sodium alginate-pectin |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810821417.2A CN108948436A (en) | 2018-07-24 | 2018-07-24 | A kind of preparation method of the modified composite membrane of sodium alginate-pectin |
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| CN108948436A true CN108948436A (en) | 2018-12-07 |
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| CN201810821417.2A Withdrawn CN108948436A (en) | 2018-07-24 | 2018-07-24 | A kind of preparation method of the modified composite membrane of sodium alginate-pectin |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111257155A (en) * | 2020-03-23 | 2020-06-09 | 浙江理工大学 | Method for detecting moisture absorption performance of printing auxiliary agent under steaming condition |
| CN114081991A (en) * | 2021-11-12 | 2022-02-25 | 重庆医科大学 | Composite transparent hydrocolloid dressing with bioactivity based on fibroin/alginate fibers and preparation method thereof |
| CN115251364A (en) * | 2022-07-25 | 2022-11-01 | 福州大学 | Preparation method of modified tea pectin, product and application thereof |
-
2018
- 2018-07-24 CN CN201810821417.2A patent/CN108948436A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111257155A (en) * | 2020-03-23 | 2020-06-09 | 浙江理工大学 | Method for detecting moisture absorption performance of printing auxiliary agent under steaming condition |
| CN111257155B (en) * | 2020-03-23 | 2022-11-04 | 浙江理工大学 | Method for detecting moisture absorption performance of printing auxiliary agent under steaming condition |
| CN114081991A (en) * | 2021-11-12 | 2022-02-25 | 重庆医科大学 | Composite transparent hydrocolloid dressing with bioactivity based on fibroin/alginate fibers and preparation method thereof |
| CN114081991B (en) * | 2021-11-12 | 2023-01-10 | 重庆医科大学 | Composite transparent hydrocolloid dressing with bioactivity based on fibroin/alginate fibers and preparation method thereof |
| CN115251364A (en) * | 2022-07-25 | 2022-11-01 | 福州大学 | Preparation method of modified tea pectin, product and application thereof |
| CN115251364B (en) * | 2022-07-25 | 2023-09-19 | 福州大学 | Preparation method of modified tea pectin, product and application thereof |
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Application publication date: 20181207 |