CN109252293A - A kind of nano polymer fibers film and preparation method thereof and purposes - Google Patents
A kind of nano polymer fibers film and preparation method thereof and purposes Download PDFInfo
- Publication number
- CN109252293A CN109252293A CN201811022413.4A CN201811022413A CN109252293A CN 109252293 A CN109252293 A CN 109252293A CN 201811022413 A CN201811022413 A CN 201811022413A CN 109252293 A CN109252293 A CN 109252293A
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- polymer fibers
- nano
- color
- meat
- fibers film
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- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 24
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- AZFNGPAYDKGCRB-XCPIVNJJSA-M [(1s,2s)-2-amino-1,2-diphenylethyl]-(4-methylphenyl)sulfonylazanide;chlororuthenium(1+);1-methyl-4-propan-2-ylbenzene Chemical compound [Ru+]Cl.CC(C)C1=CC=C(C)C=C1.C1=CC(C)=CC=C1S(=O)(=O)[N-][C@@H](C=1C=CC=CC=1)[C@@H](N)C1=CC=CC=C1 AZFNGPAYDKGCRB-XCPIVNJJSA-M 0.000 claims description 2
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Classifications
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- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
-
- 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
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/14—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10
- A23B7/153—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of liquids or solids
- A23B7/154—Organic compounds; Microorganisms; Enzymes
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- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
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- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0069—Electro-spinning characterised by the electro-spinning apparatus characterised by the spinning section, e.g. capillary tube, protrusion or pin
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
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- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0092—Electro-spinning characterised by the electro-spinning apparatus characterised by the electrical field, e.g. combined with a magnetic fields, using biased or alternating fields
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
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- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/50—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyalcohols, polyacetals or polyketals
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/94—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of other polycondensation products
Abstract
The present invention relates to a kind of purposes for fresh meat and the nano polymer fibers film of meat products color development color protection and preparation method thereof with it, which is made of with the color development color stabilizer being uniformly distributed therein according to weight ratio 10~100: 1 electrostatic spinning nano polymer fibers film.Effective, the even action using nano polymer fibers film color protection of the present invention, and slow release, continuous and effective, to extend the shelf life of cold fresh meat.
Description
[technical field]
The invention belongs to food and Bio-Nano-Materials technical field.More particularly it relates to which a kind of be used for fresh meat
With the nano polymer fibers film of meat products color development color protection, the preparation method of the nano polymer fibers film is further related to, is also related to
And the purposes of the nano polymer fibers film.
[background technique]
China is a populous big country, and food-safety problem increasingly obtains government and the attention of the common people.In recent years
Come, important planning has been made to cope with the status of cultivation and pork processing industry by government, but also has put into a large amount of manpower
And financial resources, safe, fresh, reliable meat products are provided for common people, it has also become the history of new century meat processing industry makes
Life.Although China's meat total output is very big, 1/4 or more of world's meat total output is accounted for, produces meat technology and world's advanced technology
Still there is suitable gap, meat packing process is cumbersome, and efficiency is lower.Pork circulates mainly based on heat, cold fresh meat and chilled meat,
They have its advantage and disadvantage.On the market it is fresh butcher show and sell pork, although the quality of very fresh pork is easy to become
Difference, and safe and healthy it is unable to get effective guarantee.Chilled meat, which refers to, to be saved under the conditions of certain cryogenic temperature to reduce nutrition
Substance goes bad the meat of corruption, and this meat shelf-life can at least reach 1 year or more, but chilled meat there are of poor quality, juice loss is more,
The disadvantages of taste bad.Currently, the principal mode of American-European countries's pork circulation is cold fresh meat, it is advantageous that it can preferably be protected
Demonstrate,prove the quality and nutritive value of pork.Cold fresh meat has been increasingly becoming the principal mode of urban circulation pork, the fresh meat in supermarket
Fresh-keeping mode is will to be packed into common plastics tray after raw material segmentation and weighing and wrapped up with plastic film, then be placed in Low temperature refrigerator
Sale, freshness date usually only 2-3 days.Not only the shelf-life is short, and the easy brown stain of meat in storing process, is oxidized to not by consumer
The bronzing received, this seriously affects the transport consumer environment for constraining fresh meat.
China scientific and technical personnel also have conducted extensive research work to solve this problem, such as CN103757727A is disclosed
A kind of nano-fiber material fresh-keeping for pork, the nano-fiber material is with catechin, copper nitrate and polyvinylpyrrolidone
It is prepared as a raw material.It solves the problems, such as that catechin is easily oxidized in antibacterial practical application, and imparts nano material
Extremely strong anti-microbial property.This nano-fiber material has significant inhibiting effect to the spoilage organisms in pork.But this skill
Art there are still no colour-preserving function, and it is complicated for operation need to the deficiencies of using after dissolution place.
[summary of the invention]
[technical problems to be solved]
The object of the present invention is to provide a kind of nano polymer fibers films for fresh meat and meat products color development color protection.
It is a further object to provide the preparation methods of the nano polymer fibers film.
It is a further object to provide the purposes of the nano polymer fibers film.
[technical solution]
The present invention is achieved through the following technical solutions.
The present invention relates to a kind of nano polymer fibers films for fresh meat and meat products color development color protection.
The nano polymer fibers film is by electrostatic spinning nano polymer fibers film and the color development being uniformly distributed therein
Color stabilizer is formed according to weight ratio 10~100: 1；The diameter of the nano polymer fibers is 50~1000nm, electrostatic spinning
The thickness of nano polymer fibers film is 0.01~10mm.
A preferred embodiment of the invention, the color protection colour former be it is one or more selected from sodium nitrate,
Sodium nitrite, potassium nitrate, potassium nitrite, ascorbic acid, arabo-ascorbic acid, sodium ascorbate, sodium isoascorbate or niacinamide
Color protection colour former.
According to another preferred method of implementation of the present invention, the polymer be it is one or more selected from polylactic acid, it is poly-
Caprolactone, polyvinylpyrrolidone, polyethylene, polypropylene, polyvinyl alcohol, polystyrene or polyurethane polymer.
The invention further relates to the preparation methods of the nano polymer fibers film.
The step of nano polymer fibers membrane preparation method, is as follows:
Firstly, according to polymer and color development color stabilizer 1~1000:1 of weight ratio, solvent and color development color stabilizer weight ratio 10~
The color development color stabilizer and the polymer are added in solvent by 10000:1, under conditions of temperature is 15~50 DEG C
It is uniformly mixed, obtains the electrostatic spinning liquid that polymer concentration is by weight 1~30%；
Secondly, the electrostatic spinning liquid being previously obtained to be made to the nano polymer fibers film using electrostatic spinning machine.
A preferred embodiment of the invention, the solvent be it is one or more selected from ethyl alcohol, chloroform,
Methylene chloride, n,N-Dimethylformamide, n,N-dimethylacetamide, tetrahydrofuran, dimethyl sulfoxide, acetone, glacial acetic acid or
The solvent of water.
According to another preferred method of implementation of the present invention, the electrostatic spinning machine is run under conditions of following:
25~60 DEG C of temperature, relative humidity 30~80%, 0.1~10mL/h of spinning solution fltting speed, spinning voltage 5~
50kV 5~30cm at a distance from electrostatic spinning machine spinning syringe needle to receiver board.
According to another preferred method of implementation of the present invention, the injection that the electrostatic spinning machine uses during the spinning process
Device specification is 5ml, and syringe needle is tack 20G syringe needle.
The invention further relates to the nano polymer fibers films in beasts, birds and aquatic products class fresh meat and meat products color development color protection
Purposes.
Steps are as follows for a preferred embodiment of the invention, beasts, birds and aquatic products class fresh meat and meat products color development color protection:
The polymer nanofibre film is directly overlayed through conventional pretreated beasts, birds and aquatic products class fresh meat and meat system
On product surface, the vacuum packaging material for reusing sterilization treatment is vacuum-packed, and is then stored.
According to another preferred method of implementation of the present invention, the vacuum packaging material is one or more selected from poly-
Ester, polyethylene or polyacrylic packaging material.
The present invention is described in more detail below.
The present invention relates to a kind of nano polymer fibers films for fresh meat and meat products color development color protection.
Color protection fiber is a kind of active material, color stabilizer is assembled on packaging material by electrostatic spinning mode, so
Slowly promote meat color development to meat surface release nitrite afterwards.
The nano polymer fibers film is by electrostatic spinning nano polymer fibers film and the color development being uniformly distributed therein
Color stabilizer is formed according to weight ratio 10~100: 1；The diameter of the nano polymer fibers is 50~1000nm, electrostatic spinning
The thickness of nano polymer fibers film is 0.01~10mm.
According to the present invention, color protection colour former is it should be understood that the non-pigmented of a kind of protection and promotion fresh meat and meat products color
The substance of substance.Basic role of the color protection colour former in nano polymer fibers film of the present invention is to confer to nano fibrous membrane color development
And color protection performance.
The color protection colour former that the present invention uses is one or more selected from sodium nitrate, sodium nitrite, potassium nitrate, nitrous acid
Potassium, ascorbic acid, arabo-ascorbic acid, sodium ascorbate, sodium isoascorbate or niacinamide color protection colour former, these color protections hair
Toner is all current market sales of product, such as sold by Xilong Chemical Co., Ltd with trade name sodium nitrite
Sodium nitrite, the potassium nitrate sold by Xilong Chemical Co., Ltd with trade name potassium nitrate are tried by Tianjin wind ship chemistry
Ascorbic acid that agent Science and Technology Ltd. is sold with trade name ascorbic acid, by Tianjin Fengchuan Chemical Reagent Science & Technology Co., Ltd.
With trade name sodium ascorbate sale sodium ascorbate, by Tianjin Fengchuan Chemical Reagent Science & Technology Co., Ltd. with trade name cigarette
The niacinamide of amide sale.
According to the present invention, basic role of the polymer in nano polymer fibers film of the present invention is to realize load
Color protection colour former and the function of realizing intelligence release color protection colour former.
The polymer that the present invention uses is one or more selected from polylactic acid, polycaprolactone, polyvinylpyrrolidone, poly- second
Alkene, polypropylene, polyvinyl alcohol, polystyrene or polyurethane polymer.These polymer are all current market sales of productions
Product, for example, sold by Shanghai Mike woods biochemical technology Co., Ltd with trade name polycaprolactone (PCL) polycaprolactone, by Shanghai
Polyvinylpyrrolidone that Mike woods biochemical technology Co., Ltd is sold with trade name polyvinylpyrrolidone (PVP), by Shanghai
It is polyvinyl alcohol that Mike's woods biochemical technology company of Co., Ltd is sold with trade name polyvinyl alcohol (PVA), raw by Shanghai Mike woods
Change the polyurethane that company of Science and Technology Ltd. is sold with trade name polyurethane (PU).
In the present invention, the content of the polymer is 10~100.If the content of the polymer is lower than 10,
Can be too low due to solution concentration, solvent volatilization is slow, only will form polymer beads；If the content of the polymer is higher than 100
When, then syringe needle blocking can be caused to influence nanofiber film preparation and ballpoint can largely occur because of concentration is too high, so as to cause fibre
Dimension molding is uneven and can not achieve colour-preserving function；Therefore, it is reasonably, preferably that the content of the polymer, which is 10~100,
It is 25~80, more preferably 40~65.
In the present invention, the diameter of the nano polymer fibers is 50~1000nm.If the nanometer polymer is fine
The diameter of dimension is less than 50nm, then this fiber carefully can influence color development color stabilizer and be uniformly distributed very much；If the nanometer polymer
The diameter of fiber is greater than 1000nm, then this fiber slightly can cause color development color stabilizer rate of release to be accelerated very much；Therefore, described to receive
It is appropriate, preferably 150~850nm that the diameter of rice polymer fiber, which is 50~1000nm, more preferably 300~
700nm。
In the present invention, the diameter of the nano polymer fibers is measured and is passed through using transmission microscopy
Imagepro software, which calculates, completes measurement.
In the present invention, the thickness of electrostatic spinning nano polymer fibers film is 0.01~10mm.If electrostatic spinning is received
The thickness of rice polymer fiber film is less than 0.01mm, then can break during the preparation process since nano polymer fibers film is too thin
Damage；If the thickness of electrostatic spinning nano polymer fibers film is greater than 10mm, it will lead to the increase of color development color stabilizer dosage and cause
Cost is excessively high and generates toxic side effect；Therefore, electrostatic spinning nano polymer fibers film is suitable with a thickness of 0.01~10mm
, preferably 0.1~9mm, more preferably 1~6mm.
In the present invention, the thickness of the nano polymer fibers film is measured using micrometer caliper standard method.
The invention further relates to the preparation methods of the nano polymer fibers film.
The step of nano polymer fibers membrane preparation method, is as follows:
Firstly, according to polymer and color development color stabilizer 1~1000:1 of weight ratio, solvent and color development color stabilizer weight ratio 10~
The color development color stabilizer and the polymer are added in solvent by 10000:1, under conditions of temperature is 15~50 DEG C
It is uniformly mixed, obtains the electrostatic spinning liquid that polymer concentration is by weight 1~30%；
According to the present invention, main function of the solvent in nano polymer fibers membrane preparation method is dissolution polymerization
Object increases spinning polarity.
The solvent that the present invention uses is one or more selected from ethyl alcohol, chloroform, methylene chloride, N, N- dimethyl formyl
Amine, DMAC N,N' dimethyl acetamide, tetrahydrofuran, dimethyl sulfoxide, acetone, glacial acetic acid or water solvent.These solvents are all mesh
Preceding product available on the market, such as by Beijing Ku Laibo Science and Technology Ltd. with trade name n,N-Dimethylformamide (DMF)
The N,N-dimethylformamide of sale, the tetrahydro sold by Shanghai Mike woods biochemical technology Co., Ltd with trade name tetrahydrofuran
Furans is won the dimethyl sulfoxide that Alto is sold up to Science and Technology Ltd. with trade name dimethyl sulfoxide (DMSO) by Beijing.
It has been described previously in relation to polymer and the case where color development color stabilizer, therefore has repeated no more herein.
In the present invention, the temperature that is stirred of polymer and color development color stabilizer be more than 15~50 DEG C of ranges is all undesirable
, this is because it not only influences solution viscosity, have an effect on the volatilization of solvent during electrostatic spinning；
In the present invention, the polymer concentration of electrostatic spinning liquid is 1~30% to be very important by weight, because poly-
Closing object concentration will affect spinning fluid viscosity, and then will affect the entanglement of macromolecule strand in the solution, and then influence spinning effect
Fruit.
Secondly, the electrostatic spinning liquid being previously obtained to be made to the nano polymer fibers film using electrostatic spinning machine.
According to the present invention, the electrostatic spinning machine is run under conditions of following:
25~60 DEG C of temperature, relative humidity 30~80%, 0.1~10mL/h of spinning solution fltting speed, spinning voltage 5~
50kV 5~30cm at a distance from electrostatic spinning machine spinning syringe needle to receiver board.
The specification of syringe that the electrostatic spinning machine uses during the spinning process is 5ml, and syringe needle is tack 20G syringe needle.
The electrostatic spinning machine that the present invention uses is current market sales of product, such as by Shenzhen's concerted effort micro-nano science and technology
The product that Co., Ltd is sold with trade name TL-F6.
The invention further relates to the nano polymer fibers films in beasts, birds and aquatic products class fresh meat and meat products color development color protection
Purposes.
In the present invention, the beasts, birds and aquatic products be, for example, ox, horse, camel, sheep, pig, chicken, duck, rabbit, fish, shrimp, crab,
Lobster etc., the beasts, birds and aquatic products class fresh meat it should be understood that these not chilled or marinated processing meat.
The meat products is, for example, ground meat food, hamburger meat products, meat emulsion product, ham, dry fruit beetle, barbecue meat, meat
Dried meat or Baconic.
According to the present invention, steps are as follows for beasts, birds and aquatic products class fresh meat and meat products color development color protection:
Polymer nanofibre film of the invention is directly overlayed through conventional pretreated beasts, birds and aquatic products class fresh meat and meat
On product surface, the vacuum packaging material for reusing sterilization treatment is vacuum-packed, and is then stored.
In the present invention, beasts, birds and aquatic products class fresh meat routinely pre-processes it should be understood that using existing conventional treatment method to fresh
Meat is pre-processed, such as fresh pork acid discharge, and beef is handled without acid discharge, most then with the processing such as water spray, ultraviolet sterilization
It possibly realizes and utmostly reduces the initial bacteria containing amount of these fresh meats, then remove surface tendon, fat etc..
According to the present invention, the vacuum packaging material is one or more selected from polyester, polyethylene or polyacrylic packet
Package material, these packaging materials are all current packaging material for food products available on the market.
In the present invention, sterilizing packaging material processing is using extra large with trade name by Qingdao Haire Special Electrical Appliances Co., Ltd
You carry out ultraviolet sterilization 15 minutes at the Biohazard Safety Equipment ultraviolet lamp of HR40 sale at room temperature.
In general, oxymyoglobin is reduced, and de-oxygenated myoglobin increases due to lacking oxygen under conditions of vacuum packaging
Add, becomes purple from initial pink so as to cause yellowish pink, affect the acceptance of product.The present invention is added to nitrite
Equal color developments color stabilizer, it generates nitroso in acid condition, and nitroso is reacted with myoglobins quickly generates bright-coloured, azarin
The nitrosomyoglobin of color.During the cooking process, since temperature raises, sulfydryl (- SH) is released in meat, then generated stable
With cherry nitrosohemochromogen.The public has query for nitrite, it is believed that it has very strong carcinogenicity intake that can lead
Cause poisoning.Inventors believe that actually only having its dosage just to will lead to safety problem beyond safe range.Appropriate intake may be used also
To treat cardiovascular disease.The present invention adds Trace Nitrite, and reacts sufficiently in mechanism, residual without nitrite
It stays, and proves that its content difference is away from faint compared with the meat for being not added with nitrite by remnant nitrite detection.
Compared with the direct addition methods such as tradition sprinkling, immersion, color protection packaging of the present invention utilizes spinning fibre specific surface
The big advantage of product and can slow release sustained release color development color stabilizer, it is a small amount of and uniform, do not need to add other and will affect meat
The substance of product quality., not only can be with Shelf-life in vacuum storing process, but also can be maintained always in sales process
Its vivid red stimulates consumer's desire to buy.
[beneficial effect]
The beneficial effects of the present invention are:, even action effective using nano polymer fibers film color protection of the present invention, and slowly
Release, continuous and effective.It has enhancing fresh meat colour stability, to extend the shelf life of cold fresh meat.Also, such meat exists
It is also able to maintain pink after cooked, therefore provides a kind of practicable method for cold fresh meat and its meat products color protection.
[Detailed description of the invention]
Fig. 1 is the SEM figure of color development color protection nano fibrous membrane prepared by embodiment 1；
Fig. 2 is the nano polymer fibers film vacuum packet for being vacuum-packed using common polylactic acid with being prepared using embodiment 1
The 7th day appearance photo of chilled meat of dress；
Fig. 3 is the 7th day subjective appreciation radar map of color development color protection nano fibrous membrane prepared using embodiment 1；
Fig. 4 is the change of conventional vacuum packaging at any time with nano polymer fibers of the present invention vacuum packaging color difference △ a* value
Change；In figure: △ a* value is the difference of redness final detected value and initial value
[specific embodiment]
It will be better understood that the present invention by following embodiments.
Embodiment 1: nano polymer fibers film preparation
The step of preparation method, is as follows:
Firstly, solvent and color development color stabilizer weight ratio 10:1 will according to polymer and color development color stabilizer weight ratio 400:1
The sodium nitrite color development color stabilizer sold by Xilong Chemical Co., Ltd with trade name sodium nitrite, and by Shanghai Mike woods
The polylactic acid polymer that company of biochemical technology Co., Ltd is sold with trade name polylactic acid (PLA), is added to by Chinese medicines group
It learns in the chloroform solvent that reagent Co., Ltd sell with trade name chloroform, is stirred under conditions of temperature is 30 DEG C equal
It is even, obtain the electrostatic spinning liquid that polymer concentration is by weight 25%；
Secondly, being made using the electrostatic spinning machine sold by concerted effort micro-nano Science and Technology Ltd. of Shenzhen with trade name TL-F6
With 5ml syringe and tack 20G syringe needle, in temperature 60 C, relative humidity 40%, spinning solution fltting speed 4mL/h, spinning voltage
The electrostatic spinning liquid being previously obtained is made under conditions of electrostatic spinning machine spinning syringe needle to receiver board distance 5cm by 40kV
The nano polymer fibers film.
It is detected and is determined using the method for this specification description, the diameter of the nano polymer fibers is 150nm, Static Spinning
The thickness of silk nano polymer fibers film is 1.0mm.
The electron microscope picture of the nano polymer fibers film of embodiment preparation is shown in attached drawing 1.
Embodiment 2: nano polymer fibers film preparation
The step of preparation method, is as follows:
Firstly, solvent and color development color stabilizer weight ratio 100:1 will according to polymer and color development color stabilizer weight ratio 600:1
The potassium nitrate color development color stabilizer sold by Xilong Chemical Co., Ltd with trade name potassium nitrate, with by Shanghai Mike woods biochemistry
The polycaprolactone polymer that Science and Technology Ltd. is sold with trade name polycaprolactone (PCL), is added to by Beijing extremely come science and technology of fighting
It is 15 in temperature in the n,N-Dimethylformamide solvent that Co., Ltd is sold with trade name n,N-Dimethylformamide (DMF)
It is uniformly mixed under conditions of DEG C, obtains the electrostatic spinning liquid that polymer concentration is by weight 20%；
Secondly, being made using the electrostatic spinning machine sold by concerted effort micro-nano Science and Technology Ltd. of Shenzhen with trade name TL-F6
With 5ml syringe and tack 20G syringe needle, in 30 DEG C of temperature, relative humidity 50%, spinning solution fltting speed 2mL/h, spinning voltage
The electrostatic spinning liquid being previously obtained is made under conditions of electrostatic spinning machine spinning syringe needle to receiver board distance 10cm by 50kV
The nano polymer fibers film.
It is detected and is determined using the method for this specification description, the diameter of the nano polymer fibers is 800nm, Static Spinning
The thickness of silk nano polymer fibers film is 0.1mm.
The electron microscope picture of the nano polymer fibers film of embodiment preparation is identical as attached drawing 1.
Embodiment 3: nano polymer fibers film preparation
The step of preparation method, is as follows:
Firstly, solvent and color development color stabilizer weight ratio 1000:1 will according to polymer and color development color stabilizer weight ratio 1:1
The ascorbic acid color development color stabilizer sold by Tianjin Fengchuan Chemical Reagent Science & Technology Co., Ltd. with trade name ascorbic acid, with by
The polyethylene polymer that Shanghai Mike's woods biochemical technology company of Co., Ltd is sold with trade name polyethylene, is added to by Shanghai wheat
In the tetrahydrofuran solvent that crin biochemical technology Co., Ltd is sold with trade name tetrahydrofuran, under conditions of temperature is 25 DEG C
It is uniformly mixed, obtains the electrostatic spinning liquid that polymer concentration is by weight 1%；
Secondly, being made using the electrostatic spinning machine sold by concerted effort micro-nano Science and Technology Ltd. of Shenzhen with trade name TL-F6
With 5ml syringe and tack 20G syringe needle, in 25 DEG C of temperature, relative humidity 30%, spinning solution fltting speed 8mL/h, spinning voltage
The electrostatic spinning liquid being previously obtained is made under conditions of electrostatic spinning machine spinning syringe needle to receiver board distance 16cm by 5kV
The nano polymer fibers film.
It is detected and is determined using the method for this specification description, the diameter of the nano polymer fibers is 50nm, Static Spinning
The thickness of silk nano polymer fibers film is 0.01mm.
The electron microscope picture of the nano polymer fibers film of embodiment preparation is identical as attached drawing 1.
Embodiment 4: nano polymer fibers film preparation
The step of preparation method, is as follows:
Firstly, according to polymer and color development color stabilizer weight ratio 200:1, solvent and color development color stabilizer weight ratio 3000:1,
The arabo-ascorbic acid color development color protection that will be sold by Tianjin Fengchuan Chemical Reagent Science & Technology Co., Ltd. with trade name arabo-ascorbic acid
Agent is polymerize with by Shanghai Mike's woods biochemical technology company of Co., Ltd with the polyvinyl alcohol that trade name polyvinyl alcohol (PVA) is sold
Object, is added to that win the dimethyl sulfoxide that Alto is sold with trade name dimethyl sulfoxide (DMSO) up to Science and Technology Ltd. by Beijing molten
It in agent, is uniformly mixed under conditions of temperature is 35 DEG C, obtains the electrostatic spinning that polymer concentration is by weight 5%
Liquid；
Secondly, using the electrostatic spinning machine sold by concerted effort micro-nano Science and Technology Ltd. of Shenzhen with trade name TL-F6,
Using 5ml syringe and tack 20G syringe needle, in 35 DEG C of temperature, relative humidity 80%, spinning solution fltting speed 6mL/h, spinning electricity
Press 10kV under conditions of electrostatic spinning machine spinning syringe needle to receiver board distance 22cm, the electrostatic spinning liquid system that will be previously obtained
At the nano polymer fibers film.
It is detected and is determined using the method for this specification description, the diameter of the nano polymer fibers is 1000nm, electrostatic
The thickness of spinning nano polymer fibers film is 3mm.
The electron microscope picture of the nano polymer fibers film of embodiment preparation is identical as attached drawing 1.
Embodiment 5: nano polymer fibers film preparation
The step of preparation method, is as follows:
Firstly, according to polymer and color development color stabilizer weight ratio 800:1, solvent and color development color stabilizer weight ratio 6000:1,
The sodium isoascorbate color development that will be sold by Tianjin Fengchuan Chemical Reagent Science & Technology Co., Ltd. with trade name sodium isoascorbate
Color stabilizer is polymerize with by Shanghai Mike woods biochemical technology Co., Ltd with the polystyrene that trade name polystyrene (PS) is sold
Object, is added to that win the dimethyl sulfoxide that Alto is sold with trade name dimethyl sulfoxide (DMSO) up to Science and Technology Ltd. by Beijing molten
It in agent, is uniformly mixed under conditions of temperature is 45 DEG C, obtains the electrostatic spinning that polymer concentration is by weight 30%
Liquid；
Secondly, being made using the electrostatic spinning machine sold by concerted effort micro-nano Science and Technology Ltd. of Shenzhen with trade name TL-F6
It is electric in temperature 45 C, relative humidity 60%, spinning solution fltting speed 0.1mL/h, spinning with 5ml syringe and tack 20G syringe needle
Press 20kV under conditions of electrostatic spinning machine spinning syringe needle to receiver board distance 22cm, the electrostatic spinning liquid system that will be previously obtained
At the nano polymer fibers film.
It is detected and is determined using the method for this specification description, the diameter of the nano polymer fibers is 300nm, Static Spinning
The thickness of silk nano polymer fibers film is 10mm.
The electron microscope picture of the nano polymer fibers film of embodiment preparation is identical as attached drawing 1.
Embodiment 6: nano polymer fibers film preparation
The step of preparation method, is as follows:
Firstly, according to polymer and color development color stabilizer weight ratio 1000:1, solvent and color development color stabilizer weight ratio 10000:
1, the niacinamide color development color stabilizer that will be sold by Tianjin Fengchuan Chemical Reagent Science & Technology Co., Ltd. with trade name niacinamide, with by
The polyether polyols that Shanghai Mike woods biochemical technology Co., Ltd is sold with trade name polyurethane (PU), are added to by Shanghai wheat
In the glacial acetic acid solvent that crin biochemical technology company of Co., Ltd is sold with trade name glacial acetic acid, under conditions of temperature is 50 DEG C
It is uniformly mixed, obtains the electrostatic spinning liquid that polymer concentration is by weight 10%；
Secondly, being made using the electrostatic spinning machine sold by concerted effort micro-nano Science and Technology Ltd. of Shenzhen with trade name TL-F6
It is electric in 52 DEG C of temperature, relative humidity 70%, spinning solution fltting speed 10mL/h, spinning with 5ml syringe and tack 20G syringe needle
Press 30kV under conditions of electrostatic spinning machine spinning syringe needle to receiver board distance 30cm, the electrostatic spinning liquid system that will be previously obtained
At the nano polymer fibers film.
It is detected and is determined using the method for this specification description, the diameter of the nano polymer fibers is 500nm, Static Spinning
The thickness of silk nano polymer fibers film is 6mm.
The electron microscope picture of the nano polymer fibers film of embodiment preparation is identical as attached drawing 1.
Test example 1: nano polymer fibers film of the present invention influences cold fresh meat sensory evaluation scores
The test example embodiment is as follows:
Test specimen: nano polymer fibers film prepared by embodiment 1
Fresh pork sample pretreatment:
After fresh pork is using conventional acid discharge method acid discharge for 24 hours, using by Qingdao Haire Special Electrical Appliances Co., Ltd with quotient
The Biohazard Safety Equipment ultraviolet lamp ultraviolet sterilization 15min at room temperature of name of an article Haier HR40 sale, in this way can be utmostly
Reduce the initial bacteria containing amount of sample.Then, pretreatment meat sample is removed into surface, tendon, fat etc., obtained meat sample is sub-partitioned into small
Block, quality are 50g/ block, are cut into the sample of 8 × 8 × 2cm.
The processing of fresh pork sample packaging:
Nano polymer fibers film prepared by embodiment 1 is cut into the block being consistent with meat sample product size, spinning face paste together in
Meat sample surfaces.The meat sample product of previous processed are put into vacuum packaging, are stored at 4 DEG C of temperature.Finally meat sample product are put into
Antistaling cabinet is stored in 0~4 DEG C of environment.
The nano polymer fibers film vacuum prepared using common polylactic acid vacuum packaging (blank group) and using embodiment 1
The 7th day appearance photo of chilled meat of packaging (experimental group) is shown in attached drawing 2.The nano polymer fibers film of the present invention known to attached drawing 2 is true
Bright red is presented in cold fresh meat after empty package, and common polylactic acid Vacuum Package Chilled Meat is shallower due to anoxic color, it was demonstrated that
Nano polymer fibers film vacuum packet of the present invention is equipped with very strong effect of color protection.
Sensory evaluation scores:
According to GB/T 9959.2-2008 national standard, organize 10 Majors of Food postgraduates (men and women ratio 1:1) according under
The standards of grading that table 1 is listed carry out sensory evaluation scores to the cold fresh meat quality of above-mentioned storage.Sensory evaluation scores include color change, smell
Three aspects of variation and Flexible change.Cold fresh meat appearance directly determines consumer to product purchase intention.
It is stored cold fresh meat quality sensory score result and is listed in attached drawing 3.
Table 1: fresh meat organoleptic quality standards of grading
Note:
Score value calculation method: remove to obtain the maximum value of phase-splitting difference, other values are taken into geometrical mean.
Score is defined as unacceptable lower than 3.
Attached drawing 3 is the nano polymer fibers film vacuum for being vacuum-packed using common polylactic acid with being prepared using embodiment 1
Pack the sensory evaluation scores of the 7th day chilled meat.It is obtained by the subjective appreciation data of attached drawing 3, as storage time extends, meat sample is whole
Sensory evaluation scores decline, color difference is larger, and elasticity and smell are essentially identical in scoring in the 7th day, shows that nanofiber will not
The smell and elasticity of meat products are adversely affected.Hence it is demonstrated that nano polymer fibers film of the present invention have to meat products it is very distinct
Color development effect of color protection, and will not band adversely affect.
Test example 2: influence of the nano polymer fibers film of the present invention to color difference △ a* value
The color of cold fresh meat is an important indicator of consumer's desire to buy, and it is new to can reflect cold fresh meat to a certain extent
Fresh degree.The pigment that cold fresh meat color is mainly influenced in meat is myoglobins.Myoglobins, oxymyoglobin and high-speed rail flesh
The variation for mutually converting rate and determining yellowish pink △ a* value between Lactoferrin three.Using limited by Japanese Konica Minolta
Company is measured in conventional manner with the instrument of CR-20 color difference meter.It is repeated 5 times measurement, is averaged.Measurement result is drawn
At curve attached drawing 4.
The a* value of cold fresh meat, i.e. redness known to attached drawing 4.As seen from the figure, color development color protection nano fibrous membrane of the present invention with it is general
Logical vacuum packaging is compared, and has good hair color effect.The trend risen rapidly is being presented for 24 hours, is being due to the nitrous acid in packaging
Salt action reacts with metmyoglobin and generates more stable nitrosomyoglobin.△ a* is vacuum-packed in common polylactic acid
Value declines compared with nano polymer fibers film of the present invention, the reason is that lacking oxygen in vacuum packaging, causes oxymyoglobin
It is reduced into de-oxygenated myoglobin, aubergine is presented.Compressing in vacuum packaging bag, juice loss is serious, also yellowish pink is caused to shoal.?
72-168h color rises, it may be possible to which microbial metabolism produces NO in meat, and redness increases after reacting with myoglobins.
Claims (10)
1. a kind of nano polymer fibers film for fresh meat and meat products color development color protection, it is characterised in that the nanometer polymer is fine
Dimension film is by electrostatic spinning nano polymer fibers film and the color development color stabilizer being uniformly distributed therein according to weight ratio 10~100
: 1 composition；The diameter of the nano polymer fibers is 50~1000nm, the thickness of electrostatic spinning nano polymer fibers film
It is 0.01~10mm.
2. Electrospun nano-fibers film according to claim 1, it is characterised in that the color protection colour former is a kind of
Or it is a variety of selected from sodium nitrate, it is sodium nitrite, potassium nitrate, potassium nitrite, ascorbic acid, arabo-ascorbic acid, sodium ascorbate, different anti-
The color protection colour former of bad hematic acid sodium or niacinamide.
3. Electrospun nano-fibers film according to claim 1, it is characterised in that the polymer is a kind of or more
Kind is selected from polylactic acid, polycaprolactone, polyvinylpyrrolidone, polyethylene, polypropylene, polyvinyl alcohol, polystyrene or polyurethane
Polymer.
4. the preparation method of nano polymer fibers film according to claim 1, it is characterised in that the step of the preparation method
It is as follows:
Firstly, according to polymer and color development color stabilizer 1~1000:1 of weight ratio, solvent and color development color stabilizer weight ratio 10~
The color development color stabilizer and the polymer are added in solvent by 10000:1, under conditions of temperature is 15~50 DEG C
It is uniformly mixed, obtains the electrostatic spinning liquid that polymer concentration is by weight 1~30%；
Secondly, the electrostatic spinning liquid being previously obtained to be made to the nano polymer fibers film using electrostatic spinning machine.
5. preparation method according to claim 1, it is characterised in that the solvent is one or more selected from ethyl alcohol, three
Chloromethanes, methylene chloride, n,N-Dimethylformamide, n,N-dimethylacetamide, tetrahydrofuran, dimethyl sulfoxide, acetone, ice
The solvent of acetic acid or water.
6. the preparation method according to claim 4, it is characterised in that the electrostatic spinning machine is transported under conditions of following
Row:
25~60 DEG C of temperature, relative humidity 30~80%, 0.1~10mL/h of spinning solution fltting speed, 5~50kV of spinning voltage with
Electrostatic spinning machine spinning syringe needle to receiver board 5~30cm of distance.
7. the specification of syringe that electrostatic spinning machine according to claim 4 uses during the spinning process is 5ml, syringe needle is flat
Head 20G syringe needle.
8. according to claim 1 nano polymer fibers film described in any one of -3 claims beasts, birds and aquatic products class fresh meat with
Purposes in meat products color development color protection.
9. purposes according to claim 8, it is characterised in that beasts, birds and aquatic products class fresh meat and meat products color development color protection step are such as
Under:
The polymer nanofibre film is directly overlayed through conventional pretreated beasts, birds and aquatic products class fresh meat and meat products table
On face, the vacuum packaging material for reusing sterilization treatment is vacuum-packed, and is then stored.
10. purposes according to claim 9, it is characterised in that the vacuum packaging material is one or more selected from poly-
Ester, polyethylene or polyacrylic packaging material.
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