CN106819076A - A kind of preparation method of the bacteriostasis, preservation plastics based on natural polysaccharide particle - Google Patents
A kind of preparation method of the bacteriostasis, preservation plastics based on natural polysaccharide particle Download PDFInfo
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- CN106819076A CN106819076A CN201611229339.4A CN201611229339A CN106819076A CN 106819076 A CN106819076 A CN 106819076A CN 201611229339 A CN201611229339 A CN 201611229339A CN 106819076 A CN106819076 A CN 106819076A
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- natural polysaccharide
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- polysaccharide particle
- bacteriostasis
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B4/00—General methods for preserving meat, sausages, fish or fish products
- A23B4/10—Coating with a protective layer; Compositions or apparatus therefor
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B4/00—General methods for preserving meat, sausages, fish or fish products
- A23B4/14—Preserving with chemicals not covered by groups A23B4/02 or A23B4/12
- A23B4/18—Preserving with chemicals not covered by groups A23B4/02 or A23B4/12 in the form of liquids or solids
- A23B4/20—Organic compounds; Microorganisms; Enzymes
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Microbiology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
Abstract
The present invention relates to a kind of preparation method of the bacteriostasis, preservation plastics based on natural polysaccharide particle, natural polysaccharide particle is dispersed in water, obtains natural polysaccharide particle solution；Oxidant is added in right polysaccharide particle solution, the natural polysaccharide particle solution after the hydroxyl selective oxidation on natural polysaccharide particle surface is aoxidized；Add the compound nisin with bacteriostatic activity to remove the salt in reaction system by the bag filter dialysis that interception is 3000 after the reaction in natural polysaccharide particle solution, obtain bacteriostasis, preservation plastics.Bacteriostasis, preservation plastics prepared by the present invention is sprayed at dairy products surface and easily spontaneously dries stable performance after film forming, and film forming；It is safe and nontoxic to human body non-hazardous；Due also to the unique texture of natural polysaccharide particle, can lift the fragrance and local flavor of food.Present invention process is simple, and cost is relatively low, can substitute existing chemical preservative and be applied to anti-corrosive fresh-keeping field in food processing.
Description
Technical field
The present invention relates to a kind of preparation method of the bacteriostasis, preservation plastics based on natural polysaccharide particle.
Background technology
Polysaccharide such as starch and cellulose are the renewable materials of macromolecular that nature is widely present, because of its abundance, ring
The friendly and good biological safety in border, all has broad application prospects in many fields.But due to starch and cellulose
Without bacteriostatic activity, its application in the material such as function packaging or functional fibre is limited.
In order to assign starch and the certain bacteriostasis property of cellulose, researcher is existed by certain method physically or chemically
The inorganic matter nano-particles such as silver, copper, titanium dioxide, cuprous oxide are introduced in starch or cellulosic material substrate, its is assigned antibacterial
Function；Also there is researcher by cellulose and the organic compound antibacterial such as shitosan and its quaternary ammonium salt, quaternary alkylphosphonium salt antiseptic, halogen amine
Agent has been mixed with the composite with bacteria resistance function；Also also having researcher will directly prepare after starch or cellulose derivatization
Cellulose derivative with bacteria resistance function.But, starch or cellulose bacteria resistance function material prepared by the above method makes because of it
There is certain security in bacteriostatic agent, the antibacterial material of preparation may not apply to food packaging applications, especially as can
Feeding habits film packaging material.
Additionally, the existing preparation on edibility cellulose bacteriostatic agent is exactly the molten of cellulose also in the presence of a subject matter
Solution problem, due to cellulose it is difficult to be dissolved in common solvent, conventional method needs to use organic solvent or substantial amounts of acid, alkali,
End processing sequences are complicated, and can introduce new hazardous material, and the antibacterial material of preparation is deposited when as packaging material for food application
In larger potential safety hazard.Cellulose after starch and derivatization can assign its certain biocidal property, but its solvent resistant
Property can be affected, and when being used as bacteriostatic agent, antibacterial layer can come off because of the humidity of residing environment, solvent action.Cause
This, exploitation is faced the challenge based on the novel cellulose material with certain bacteriostatic activity and good painting membrane stability.
A kind of methods that unformed cellulose grain is prepared under aqueous phase solvent system of CN105218837, are by natural fibre
Dimension element is dissolved in the dispersion of water and/or organic solvent below 0 DEG C, obtains cellulose solution, and cellulose solution concentration is
In the dispersion of 0.5wt%-10wt%, cellulose solution water and/or organic solvent, cellulose dispersion mixed liquor is obtained, removed
In inorganic salts and/or organic solvent, then through removal of impurities, drying, obtain amorphous fiber crude granule.
The content of the invention
The purpose of the present invention is directed to above-mentioned present situation, it is desirable to provide a kind of succinct, process green, prepared material has
The preparation side of the bacteriostasis, preservation plastics based on natural polysaccharide particle of good film forming, stability and good bacteriostasis property
Method.
The implementation of the object of the invention is, a kind of preparation side of the bacteriostasis, preservation plastics based on natural polysaccharide particle
Method, preparation is comprised the following steps that：
1) 5g-8g natural polysaccharide particles are weighed to be scattered in 100mL-600ml water, natural polysaccharide particle solution is obtained；
The natural polysaccharide particle is unformed cellulose grain, or for microcrystalline cellulose, Microcrystalline Starch, cellulose are received
One kind in rice fiber, Cellulose nanocrystal；
2) to step 1) gained natural polysaccharide particle solution in add 1.32g-8.94g oxidants react 6h at room temperature,
Or lucifuge reacts 6h-8h at 37 DEG C -40 DEG C, after the hydroxyl selective oxidation on natural polysaccharide particle surface is aoxidized
Natural polysaccharide particle solution；
The oxidant is sodium metaperiodate, potassium metaperiodate or periodic acid；
3) to step 2) add in gained natural polysaccharide particle solution the 5g-6g there is the compound nisin of bacteriostatic activity
Rhzomorph removes the salt in reaction system at room temperature reaction 6-8 hours, then by the bag filter dialysis that interception is 3000, must press down
Bacterium fresh-keeping film-coating agent.
Compared with prior art, the invention has the advantages that：
1st, selected raw material is natural polysaccharide particle, natural polysaccharide material safety；
2nd, resulting bacteriostasis, preservation plastics has preferable bacteriostatic activity；
3rd, resulting bacteriostasis, preservation plastics is easy to film forming after being dried in water, with good stability；
4th, course of reaction is simple, and prepared bacteriostasis, preservation plastics is safe and nontoxic to human body non-hazardous.
Brief description of the drawings
Fig. 1 is the optical fiber photo of the cellulose colloid particle bacteriostatic agent of the gained of embodiment 7,
Fig. 2 is the optical fiber photo of the cellulose colloid particle bacteriostatic agent of the gained of embodiment 8,
Fig. 3 is the optical fiber photo of the cellulose colloid particle bacteriostatic agent of the gained of embodiment 9,
Fig. 4 is the optical fiber photo of the cellulose colloid particle bacteriostatic agent of the gained of embodiment 11.
Specific embodiment
The present invention is to be dispersed in water natural polysaccharide particle, obtains natural polysaccharide particle solution.The natural polysaccharide particle
Or be unformed cellulose grain, or in microcrystalline cellulose, Microcrystalline Starch, cellulose nano-fibrous, Cellulose nanocrystal
It is a kind of.
The unformed cellulose grain uses method disclosed in CN105218837, is to be previously dissolved in cotton linter
The NaOH/ urea of 7wt%/12wt%, obtains the cellulose solution that concentration is 0.5wt%, then by cellulose solution at -12 DEG C
Refrigerator freezing 5min, takes out, and is dissolved by mechanical agitation at room temperature, the solution of clear viscous is obtained, in churned mechanically condition
Under drop to cellulose solution volume identical absolute ethyl alcohol, ethanol is then removed by vacuum distillation, removed by washing
Unformed cellulose aqueous dispersions particle obtained by inorganic matter.
Microcrystalline Starch used, the size of microcrystalline cellulose at 10-200 microns, cellulose nano-fibrous and cellulose nanometer
Brilliant size is nanoscale.Preferably, cellulose nano-fibrous, Cellulose nanocrystal size is 100nm.
The present invention disperses the one kind in 5g microcrystalline celluloses, Microcrystalline Starch, cellulose nano-fibrous, Cellulose nanocrystal
In 100mL water, after adding 1.32g-7.92g sodium metaperiodates to react 6h in room temperature or at 37 DEG C, now, sodium metaperiodate whole
The oxidation reaction of starch is take part in, then adds the compound 5g-6g nisins with bacteriostatic activity, in room temperature reaction 6
Hour.
Be scattered in the unformed cellulose grains of 5g-8g in 200mL-600mL water by the present invention, adds 2.64g-8.94g high
Sodium iodate lucifuge reaction 6h-8h at 37 DEG C -40 DEG C, now, sodium metaperiodate all take part in the oxidation reaction of starch, Ran Houjia
5g-7g had the compound nisin of bacteriostatic activity, in room temperature reaction 6 hours.
Plus the salt removed in reaction system of being dialysed by bag filter that interception is 3000 after nisin reaction, obtain
Bacteriostasis, preservation plastics.
Bacteriostasis, preservation plastics prepared by the present invention is sprayed at dairy products surface and easily spontaneously dries performance after film forming, and film forming
Stabilization, due also to the unique texture of natural polysaccharide particle, can lift the fragrance and local flavor of food.
With specific embodiment in detail the present invention is described in detail below.
Embodiment 1, weigh 5g Microcrystalline Starch and be scattered in 100mL water, 1.32g is high to being added in natural polysaccharide particle solution
Sodium iodate reacts 6h at room temperature, plus 5g nisins were in room temperature reaction 6 hours, then by interception be 3000 it is saturating
The salt in reaction system is removed in analysis bag dialysis, obtains bacteriostasis, preservation plastics.Bacteriostasis, preservation plastics Direct Uniform is sprayed at meat
Product surface, drying and forming-film.The bacteriostatic activity of the present embodiment product opposite meat products is evaluated with reference to GB (GB4789.2-
2010, GB 5009.44-2003), storage number of days can be significantly improved, the meat products of relatively non-dip-coating bacteriostatic agent can extend 8 days goods
The frame phase.
Embodiment 2, weigh 5g Microcrystalline Starch and be scattered in 100mL water, 2.64g is high to being added in natural polysaccharide particle solution
Sodium iodate reacts 6h at 37 DEG C, then that 5g nisins is slow after adding 2.64g sodium metaperiodates to react 6h at 37 DEG C
It is added drop-wise in above-mentioned system, reacts at room temperature 6 hours, is then dialysed by the bag filter that interception is 3000 and remove reactant
Salt in system, obtains bacteriostasis, preservation plastics.Bacteriostasis, preservation plastics Direct Uniform is sprayed at meat products surface, drying and forming-film.
The bacteriostatic activity of the cellulose colloid particle bacteriostatic agent opposite meat products obtained by the present embodiment is evaluated with reference to GB
(GB4789.2-2010, GB 5009.44-2003), can significantly improve storage number of days, and the meat products of relatively non-dip-coating bacteriostatic agent can
12 days shelf lifes of extension.
Embodiment 3, weigh 5g microcrystalline celluloses and be scattered in 200mL water, to adding 7.92g in natural polysaccharide particle solution
Sodium metaperiodate reacts 6h at 37 DEG C, plus 6g nisins were in room temperature reaction 6 hours, then by interception be 3000 it is saturating
The salt in reaction system is removed in analysis bag dialysis, obtains bacteriostasis, preservation plastics.Bacteriostasis, preservation plastics Direct Uniform is sprayed at meat
Product surface, drying and forming-film.The bacteriostatic activity of the cellulose colloid particle bacteriostatic agent opposite meat products obtained by the present embodiment is commented
Valency can significantly improve storage number of days, relatively non-dip-coating bacteriostatic agent with reference to GB (GB4789.2-2010, GB 5009.44-2003)
Meat products can extend 15 days shelf lifes.
Embodiment 4, with embodiment 1, unlike, weigh that 5g is cellulose nano-fibrous to be scattered in 100mL water.
Embodiment 5, with embodiment 1, unlike, weigh 5g Cellulose nanocrystals and be scattered in 100mL water.
Embodiment 6, cotton linter is previously dissolved in the NaOH/ urea of 7wt%/12wt%, obtains the fibre that concentration is 0.5wt%
The plain solution of dimension, then by cellulose solution in -12 DEG C of refrigerator freezings, 5min is taken out, is dissolved by mechanical agitation at room temperature, obtained
To the solution of clear viscous, in dropping to cellulose solution volume identical absolute ethyl alcohol under conditions of mechanical agitation, then
Ethanol is removed by vacuum distillation, by unformed cellulose aqueous dispersions particle obtained by washing removing inorganic matter.
Weigh 5g microcrystalline celluloses to be scattered in 200mL water, to addition 2.64g sodium metaperiodates in natural polysaccharide particle solution
In 37 DEG C of lucifuges reaction 6h, plus 5g nisins were in room temperature reaction 6 hours, then by bag filter that interception is 3000
The salt in reaction system is removed in dialysis, obtains bacteriostasis, preservation plastics.Bacteriostasis, preservation plastics Direct Uniform is sprayed at meat products
Surface, drying and forming-film.The bacteriostatic activity evaluation ginseng of the cellulose colloid particle bacteriostatic agent opposite meat products obtained by the present embodiment
According to GB (GB4789.2-2010, GB 5009.44-2003), storage number of days, the meat of relatively non-dip-coating bacteriostatic agent can be significantly improved
Product can extend 10 days shelf lifes.
Embodiment 7, with embodiment 6, unlike,
Weigh 5g microcrystalline celluloses to be scattered in 200mL water, to addition 5.28g sodium metaperiodates in natural polysaccharide particle solution
In 40 DEG C of lucifuges reaction 6h, plus 5g nisins were in room temperature reaction 6 hours, then by bag filter that interception is 3000
The salt in reaction system is removed in dialysis, obtains bacteriostasis, preservation plastics.Bacteriostasis, preservation plastics Direct Uniform is sprayed at meat products
Surface, drying and forming-film.The bacteriostatic activity of the present embodiment product opposite meat products is evaluated with reference to GB (GB4789.2-2010, GB
5009.44-2003), storage number of days can be significantly improved, the meat products of relatively non-dip-coating bacteriostatic agent can extend 13 days shelf lifes.
The optical fiber photo of the cellulose colloid particle bacteriostatic agent obtained by the present embodiment is shown in Fig. 1.
Embodiment 8, with embodiment 6, unlike,
Weigh 5g microcrystalline celluloses to be scattered in 400mL water, to addition 6.6g sodium metaperiodates in natural polysaccharide particle solution
In 37 DEG C of lucifuges reaction 8h, plus 7g nisins were in room temperature reaction 6 hours, then by bag filter that interception is 3000
The salt in reaction system is removed in dialysis, obtains bacteriostasis, preservation plastics.Bacteriostasis, preservation plastics Direct Uniform is sprayed at meat products
Surface, drying and forming-film.The bacteriostatic activity of the present embodiment product opposite meat products is evaluated with reference to GB (GB4789.2-2010, GB
5009.44-2003), storage number of days can be significantly improved, the meat products of relatively non-dip-coating bacteriostatic agent can extend 15 days shelf lifes.
The optical fiber photo of the cellulose colloid particle bacteriostatic agent obtained by the present embodiment is shown in Fig. 2.
Embodiment 9, with embodiment 6, unlike,
Weigh 6g microcrystalline celluloses to be scattered in 400mL water, to addition 7.62g sodium metaperiodates in natural polysaccharide particle solution
In 37 DEG C of lucifuges reaction 6h, plus 7g nisins were in room temperature reaction 6 hours, then by bag filter that interception is 3000
The salt in reaction system is removed in dialysis, obtains bacteriostasis, preservation plastics.Bacteriostasis, preservation plastics Direct Uniform is sprayed at meat products
Surface, drying and forming-film.The bacteriostatic activity of the present embodiment product opposite meat products is evaluated with reference to GB (GB4789.2-2010, GB
5009.44-2003), storage number of days can be significantly improved, the meat products of relatively non-dip-coating bacteriostatic agent can extend 14 days shelf lifes.
The optical fiber photo of the cellulose colloid particle bacteriostatic agent obtained by the present embodiment is shown in Fig. 3.
Embodiment 10, with embodiment 6, unlike,
Weigh 8g microcrystalline celluloses to be scattered in 600mL water, to addition 8.94g sodium metaperiodates in natural polysaccharide particle solution
In 37 DEG C of lucifuges reaction 8h, plus 7g nisins were in room temperature reaction 6 hours, then by bag filter that interception is 3000
The salt in reaction system is removed in dialysis, obtains bacteriostasis, preservation plastics.Bacteriostasis, preservation plastics Direct Uniform is sprayed at meat products
Surface, drying and forming-film.The bacteriostatic activity of the present embodiment product opposite meat products is evaluated with reference to GB (GB4789.2-2010, GB
5009.44-2003), storage number of days can be significantly improved, the meat products of relatively non-dip-coating bacteriostatic agent can extend 15 days shelf lifes.
Embodiment 11, with embodiment 6, unlike,
Weigh 8g microcrystalline celluloses to be scattered in 600mL water, to addition 8.94g sodium metaperiodates in natural polysaccharide particle solution
In 40 DEG C of lucifuges reaction 8h, plus 8g nisins were in room temperature reaction 6 hours, then by bag filter that interception is 3000
The salt in reaction system is removed in dialysis, obtains bacteriostasis, preservation plastics.Bacteriostasis, preservation plastics Direct Uniform is sprayed at meat products
Surface, drying and forming-film.The bacteriostatic activity of the present embodiment product opposite meat products is evaluated with reference to GB (GB4789.2-2010, GB
5009.44-2003), storage number of days can be significantly improved, the meat products of relatively non-dip-coating bacteriostatic agent can extend 18 days shelf lifes.
The optical fiber photo of the cellulose colloid particle bacteriostatic agent obtained by the present embodiment is shown in Fig. 4.
Claims (6)
1. a kind of preparation method of the bacteriostasis, preservation plastics based on natural polysaccharide particle, it is characterised in that：The specific step for preparing
It is rapid as follows：
1) 5g-8g natural polysaccharide particles are weighed to be scattered in 100mL-600ml water, natural polysaccharide particle solution is obtained；
The natural polysaccharide particle is unformed cellulose grain, or is microcrystalline cellulose, Microcrystalline Starch, cellulose Nanowire
One kind in dimension, Cellulose nanocrystal；
2) to step 1) add 1.32g-8.94g oxidants to react 6h at room temperature in gained natural polysaccharide particle solution, or
Lucifuge reaction 6h-8h, natural after the hydroxyl selective oxidation on natural polysaccharide particle surface is aoxidized at 37 DEG C -40 DEG C
Polysaccharide particle solution；
The oxidant is sodium metaperiodate, potassium metaperiodate or periodic acid；
3) to step 2) add in gained natural polysaccharide particle solution the 5g-6g there is the compound nisin of bacteriostatic activity
At room temperature reaction 6-8 hours, the salt removed in reaction system of then being dialysed by the bag filter that interception is 3000 obtained antibacterial guarantor
Fresh plastics.
2. the preparation method of a kind of bacteriostasis, preservation plastics based on natural polysaccharide particle according to claim 1, it is special
Levy and be：One kind in 5g microcrystalline celluloses, Microcrystalline Starch, cellulose nano-fibrous, Cellulose nanocrystal is scattered in 100mL
In water, after adding 1.32g-7.92g sodium metaperiodates to react 6h in room temperature or at 37 DEG C, then add the chemical combination with bacteriostatic activity
Thing 5g-6g nisins, in room temperature reaction 6 hours.
3. the preparation method of a kind of bacteriostasis, preservation plastics based on natural polysaccharide particle according to claim 1, it is special
Levy and be：The unformed cellulose grains of 5g-8g are scattered in 200mL-600mL water, add 2.64g-8.94g sodium metaperiodates to exist
Lucifuge reaction 6h-8h at 37 DEG C -40 DEG C, now, sodium metaperiodate all take part in the oxidation reaction of starch, then add 5g-7g tools
There is the compound nisin of bacteriostatic activity, in room temperature reaction 6 hours.
4. the preparation method of a kind of bacteriostasis, preservation plastics based on natural polysaccharide particle according to claim 1, it is special
Levy and be：Step 1) in unformed cellulose grain be the NaOH/ urea that cotton linter is previously dissolved in 7wt%/12wt%, obtain
It is the cellulose solution of 0.5wt% to concentration, then by cellulose solution in -12 DEG C of refrigerator freezing 5min, takes out, leads at room temperature
Mechanical agitation dissolving is crossed, the solution of clear viscous is obtained, cellulose solution volume is dropped under conditions of mechanical agitation identical
Absolute ethyl alcohol in, ethanol is then removed by vacuum distillation, as wash remove inorganic matter obtained by unformed cellulose water
Dispersion granule.
5. the preparation method of a kind of bacteriostasis, preservation plastics based on natural polysaccharide particle according to claim 1, it is special
Levy and be：Step 1) in Microcrystalline Starch used, the size of microcrystalline cellulose in 10-200 microns, cellulose nano-fibrous and fiber
The nanocrystalline size of element is nanoscale.
6. the preparation method of a kind of bacteriostasis, preservation plastics based on natural polysaccharide particle according to claim 1 or 3, its
It is characterised by：Cellulose nano-fibrous, Cellulose nanocrystal size is 100nm.
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| CN109161043A (en) * | 2018-08-22 | 2019-01-08 | 广西大学 | A kind of preparation method of high-barrier antibacterial composite package film |
| CN112088882A (en) * | 2020-09-04 | 2020-12-18 | 浙大宁波理工学院 | Antibacterial nanocellulose microcapsule and preparation method thereof |
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| CN109161043A (en) * | 2018-08-22 | 2019-01-08 | 广西大学 | A kind of preparation method of high-barrier antibacterial composite package film |
| CN112088882A (en) * | 2020-09-04 | 2020-12-18 | 浙大宁波理工学院 | Antibacterial nanocellulose microcapsule and preparation method thereof |
| CN112088882B (en) * | 2020-09-04 | 2022-05-20 | 浙大宁波理工学院 | Antibacterial nanocellulose microcapsule and preparation method thereof |
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