CN110183741A - A kind of composite package film and preparation method thereof - Google Patents
A kind of composite package film and preparation method thereof Download PDFInfo
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- CN110183741A CN110183741A CN201910480775.6A CN201910480775A CN110183741A CN 110183741 A CN110183741 A CN 110183741A CN 201910480775 A CN201910480775 A CN 201910480775A CN 110183741 A CN110183741 A CN 110183741A
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- Prior art keywords
- film
- solution
- composite package
- beta glucan
- pulullan polysaccharide
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/46—Applications of disintegrable, dissolvable or edible materials
- B65D65/463—Edible packaging materials
-
- 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
-
- 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
-
- 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
- C08J2305/02—Dextran; 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
-
- 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
- C08J2405/02—Dextran; 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
Abstract
The present invention discloses a kind of composite package film and preparation method thereof, is related to Food Packaging technology field.The preparation method of the composite package film obtains pulullan polysaccharide solution the following steps are included: pulullan polysaccharide is dissolved in water；Beta glucan is dissolved in water, obtains beta glucan solution；The pulullan polysaccharide solution and the beta glucan solution are mixed, glycerol is added, deaeration is handled after mixing evenly, obtains casting solution；The casting solution is layered in film formation device, film forming is baked, obtains composite package film.The present invention is directed to prepare a kind of composite package film, the composite package film has colourless, tasteless, transparent, oil resistance, oxygen barrier, heat-sealable, stronger tensile strength and flexibility, so that it, in fresh-keeping foodstuff, can extend the food fresh keeping phase；And its preferable dissolubility also makes it be more suitable for the packaging of the food such as instant noodles oil plant or powder.
Description
Technical field
The present invention relates to Food Packaging technology field, in particular to a kind of composite package film and preparation method thereof.
Background technique
Traditional food package film is mainly the synthetic plastics such as polyethylene, polypropylene, but these synthetic plastics are also increasingly
Non-degradable, the non-renewable and characteristics such as influence food safety are exposed, causes serious pollution to environment, and increase blowdown
The additional investment of processing.With the ideological raising of people, consumer more pursues environmental protection, safety, green, organic food
Packaging material, edibility packaging film become the hot spot of current research.
The type of edibility packaging film has protide, lipid, polysaccharide etc..Albumen, polysaccharide, lipid prepare edible
Have the defects that in terms of mechanical performance and barrier property with property packaging film it is different, such as in terms of preserving fruit and vegetable utilizing, because fresh-keeping right
The difference of elephant, protein membrance casting condition, film adjuvants and dosage can gaps；And polysaccharide edible film is due to polysaccharide molecule
Belonging to hydrophilic radical causes its resistance moist poor；Lipid film be also easy to produce crackle in the preparation or hole to reduce its resistance moist and easy
Generate waxy mouthfeel.
Summary of the invention
The main object of the present invention is to propose a kind of composite package film and preparation method thereof, it is intended to be prepared a kind of comprehensive
It can preferable composite package film.
To achieve the above object, the present invention proposes a kind of composite package film, the composite package film include pulullan polysaccharide,
Beta glucan and glycerol.
Optionally, the raw material including following parts by weight: 0.3~0.05 part of pulullan polysaccharide, 0.05~0.3 part of β-Portugal are poly-
Sugar and 0.06~0.15 part of glycerol.
The present invention also proposes that a kind of preparation method of composite package film, the preparation method of the composite package film include following
Step:
Pulullan polysaccharide is dissolved in water, obtains pulullan polysaccharide solution；
Beta glucan is dissolved in water, obtains beta glucan solution；
The pulullan polysaccharide solution and the beta glucan solution are mixed, glycerol is added, deaeration is handled after mixing evenly,
Obtain casting solution；
The casting solution is layered in film formation device, film forming is baked, obtains composite package film.
Optionally, each component includes: that 0.3~0.05 part of pulullan polysaccharide, 0.05~0.3 part of β-Portugal are poly- according to parts by weight
Sugar and 0.06~0.15 part of glycerol.
Optionally, described that pulullan polysaccharide is dissolved in water, the step of obtaining pulullan polysaccharide solution, includes:
Pulullan polysaccharide is taken, water is added, 1.5~2.5h of heating stirring at 75~85 DEG C obtains pulullan polysaccharide solution.
Optionally, described that beta glucan is dissolved in water, the step of obtaining beta glucan solution, includes:
Beta glucan is taken, water is added, 1.5~2.5h of heating stirring at 75~85 DEG C obtains beta glucan solution.
Optionally, the mixing pulullan polysaccharide solution and the beta glucan solution are added glycerol, stir evenly
Deaeration is handled afterwards, and the step of obtaining casting solution includes:
The pulullan polysaccharide solution and the beta glucan solution are mixed, glycerol is added and is cooled to room after mixing evenly
Temperature obtains mixed liquor；
The mixed liquor stands to 12 at 0~4 DEG C~for 24 hours to eliminate bubble, obtain casting solution.
Optionally, in the step of described that the casting solution is layered in film formation device, baking forms a film, and obtains composite package film,
The temperature of the baking is 30~50 DEG C.
Optionally, the step of described that the casting solution is layered in film formation device, baking forms a film, and obtains composite package film packet
It includes:
The casting solution is layered in film formation device, film forming is baked；
The film formation device of overlay film is placed in 24~48h in the environment that humidity is 40~55%, obtains composite package film.
In technical solution of the present invention, pulullan polysaccharide and beta glucan are mixed with composite package film, due to Propiram
Hydrophilic polysaccharide is strong and has high-gas resistance, and beta glucan has swelling character, certain retention ability and gel characteristic, so that
The advantages of when composite package film both had not only had both each self film, but also can make up mutually to improve defect when each self film: this is multiple
Closing packaging film has colourless, tasteless, transparent, oil resistance, oxygen barrier, heat-sealable, stronger tensile strength and flexibility, thus
So that it, in fresh-keeping foodstuff, can extend the food fresh keeping phase；And its preferable dissolubility also makes it be more suitable for instant noodles oil plant
Or the packaging of the food such as powder.Further it is proposed that composite package film be also beta glucan in edible food packaging film
On open new developing direction.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other relevant attached drawings are obtained according to these attached drawings.
Fig. 1 is the flow diagram of an embodiment of the preparation method of composite package film proposed by the present invention；
Fig. 2 is the X diffraction spectrogram of composite package film prepared by embodiment 1；
Fig. 3 is the infrared detection spectrogram of composite package film prepared by embodiment 1,2,4；
Fig. 4 to fig. 6 is corresponding in turn to the electron-microscope scanning figure of the composite package film prepared for embodiment 1,3,4；
Fig. 7 is the DSC scanning figure of composite package film prepared by embodiment 1 to 6.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, according to normal conditions or manufacturer builds
The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional production that can be obtained by commercially available purchase
Product.
It in addition, the technical solution between each embodiment can be combined with each other, but must be with ordinary skill
Based on personnel can be realized, this technical side will be understood that when the combination of technical solution appearance is conflicting or cannot achieve
The combination of case is not present, also not the present invention claims protection scope within.
Edible film prepared by albumen, polysaccharide, lipid haves the defects that different, example in terms of mechanical performance and barrier property
Such as in terms of preserving fruit and vegetable utilizing, because of the difference of fresh-keeping object, protein membrance casting condition, film adjuvants and dosage can gaps；
And polysaccharide edible film causes its resistance moist poor due to polysaccharide molecule category hydrophilic radical；Lipid film is also easy to produce in the preparation to be split
Line or hole reduce it and hinder moist and be also easy to produce waxy mouthfeel.
In consideration of it, to achieve the above object, the present invention proposes that a kind of composite package film, the composite package film include general Shandong
Blue polysaccharide, beta glucan and glycerol.
Pulullan polysaccharide hydrophily is strong and has high-gas resistance, and therefore, the edible film of pulullan polysaccharide preparation has instant
It is property, colourless, tasteless, transparent, oil resistance, oxygen barrier, heat-sealable, grease and vitamin quilt in food can be prevented well
Oxidation, but correspondingly, tensile strength is poor, more crisp, easily rupturable；Beta glucan have swelling character, certain retention ability and
Gel characteristic, and low density lipoprotein cholesterol content can be substantially reduced, improve high-density lipoprotein cholesterol, well
Balancing blood pressure and improvement lipids contents, balance the reaction of postprandial blood sugar and insulin, treat and prevent cardiovascular disease, prevent II
Patients with type Ⅰ DM, and the immune function of organ can be improved by increasing the immunocyte in body blood to avoid infection,
Reduce cancer hair rate.In the present embodiment, pulullan polysaccharide and beta glucan are mixed with composite package film, so that compound packet
The advantages of when dress film both had not only had both each self film, but also can make up mutually to improve defect when each self film: the composite packaging
Film has colourless, tasteless, transparent, oil resistance, oxygen barrier, heat-sealable, stronger tensile strength and flexibility, so that its
In fresh-keeping foodstuff, the food fresh keeping phase can be extended；And its preferable dissolubility also makes it be more suitable for instant noodles oil plant or powder
The packaging of equal food.Further it is proposed that composite package film be also that beta glucan is opened up on edible food packaging film
New developing direction.
To further enhance film properties, each component content is adjusted in the present embodiment, specifically, the composite packaging
Film includes the raw material of following parts by weight: 0.3~0.05 part of pulullan polysaccharide, 0.05~0.3 part of beta glucan and 0.06~
0.15 part of glycerol.
Based on this, the present invention also proposes a kind of preparation method of composite package film, can be prepared by the preparation method
Above-mentioned composite package film.The flow diagram of one embodiment of the preparation method of composite package film as shown in connection with fig. 1, it is described multiple
Close packaging film preparation method the following steps are included:
Step S10, pulullan polysaccharide is dissolved in water, obtains pulullan polysaccharide solution.
Specifically, it can carry out in accordance with the following steps: take pulullan polysaccharide, water, the heating stirring at 75~85 DEG C is added
1.5~2.5h obtains pulullan polysaccharide solution.In this way, pulullan polysaccharide can be made sufficiently, rapidly to dissolve.
Step S20, beta glucan is dissolved in water, obtains beta glucan solution.
Specifically, it can carry out in accordance with the following steps: take beta glucan, water, the heating stirring 1.5 at 75~85 DEG C is added
~2.5h obtains beta glucan solution.In this way, beta glucan can be made sufficiently, rapidly to dissolve.
It should be noted that step S10 and step S20 do not have a sequencing, step S10 can before step S20, it
It carries out afterwards or simultaneously.
Step S30, the pulullan polysaccharide solution and the beta glucan solution are mixed, glycerol is added, after mixing evenly
Deaeration processing, obtains casting solution.
Pulullan polysaccharide hydrophily is strong and has high-gas resistance, is the quality material for preparing edibility packaging film, it is single with
Pulullan polysaccharide be substrate preparation edibility packaging film have instant capacity, colourless, tasteless, transparent, oil resistance, oxygen barrier,
It is heat-sealable, grease and vitamin in food can be prevented to be oxidized well, but also result in the tension of its manufactured film
Intensity is poor, more crisp, easily rupturable；And beta glucan has swelling character, certain retention ability and gel characteristic, it just can be more
The defect of pulullan polysaccharide film is mended, the two is mixed and added into a certain amount of glycerol and is plasticized, and the two can be made to be mixed to prepare
Composite package film can have both preferable mechanical performance and barrier property.
When carrying out step S30, can specifically carry out in accordance with the following steps:
Step S31, the pulullan polysaccharide solution and the beta glucan solution are mixed, glycerol is added, after mixing evenly,
It is cooled to room temperature, obtains mixed liquor；
Step S32, the mixed liquor stands to 12 at 0~4 DEG C~for 24 hours to eliminate bubble, obtain casting solution.
When carrying out step S32, can also stand 12~for 24 hours after will mixed liquor ultrasonic treatment or vacuum defoamation at
Reason is so that bubble is sufficiently eliminated.
In addition, used each component can take according to following parts by weight in above-mentioned steps S10 into step S30
With: 0.3~0.05 part of pulullan polysaccharide, 0.05~0.3 part of beta glucan and 0.06~0.15 part of glycerol.
Step S40, the casting solution is layered in film formation device, bakes film forming, obtains composite package film.
Wherein, the temperature of the baking is 30~50 DEG C, and baking time can be 5~15h.
When it is implemented, step S40 may include:
Step S41, the casting solution is layered in film formation device, bakes film forming.
Wherein, mold can be polyethylene flat panel substrates, glass plate or mold of various shapes.
Step S42, the film formation device of overlay film is placed in 24~48h in the environment that humidity is 40~55%, obtained compound
Packaging film.
Technical solution of the present invention is described in further detail below in conjunction with specific embodiments and the drawings, it should be understood that
Following embodiment is only used to explain the present invention, is not intended to limit the present invention.
Embodiment 1
0.3g pulullan polysaccharide is weighed, 20mL water is added, the heating stirring 1.5h at 75 DEG C obtains pulullan polysaccharide solution；
0.05g beta glucan is weighed, 20mL water is added, the heating stirring 1.5h at 80 DEG C obtains beta glucan solution.
Pulullan polysaccharide solution and beta glucan solution are mixed, 0.06g glycerol is added and is cooled to room after mixing evenly
Temperature obtains mixed liquor；Mixed liquor is stood to 12h at 0~4 DEG C to eliminate bubble, obtains casting solution.
Casting solution is poured into polyethylene plate, then plate is put into 30 DEG C of baking oven, is taken out after 10h.By plate
It is placed in 50% humidity environment and balances for 24 hours, take off film up to composite package film.
Using X-ray diffractometer irradiation composite package film to probe into intermolecular interaction.It is known for not phase completely
The blending polymeric system of appearance, it is very weak due to not interacting or interacting between two components, have respective crystallization
Area, X diffraction spectrogram will show as each component diffraction spectrogram and simply be superimposed in proportion；Conversely, having between each component stronger
When interaction, the characteristic diffraction peak of certain polymers compositions then disappears, and the aggregated structure of blended polymer changes, from
And crystallization is made to change.The peak type of composite package film has a highest peak at 20 ° as seen from Figure 2, and amorphous knot is presented
Structure illustrates the intermolecular network structure for forming densification.
Embodiment 2
0.15g pulullan polysaccharide is weighed, 20mL water is added, the heating stirring 2h at 80 DEG C obtains pulullan polysaccharide solution；Claim
0.28g beta glucan is taken, 20mL water is added, the heating stirring 2h at 75 DEG C obtains beta glucan solution.
Pulullan polysaccharide solution and beta glucan solution are mixed, 0.09g glycerol is added and is cooled to room after mixing evenly
Temperature obtains mixed liquor；Mixed liquor is stood for 24 hours at 0~4 DEG C to eliminate bubble, casting solution is obtained.
Casting solution is poured into polyethylene plate, then plate is put into 35 DEG C of baking oven, is taken out after 5h.Plate is set
48h is balanced in 55% humidity environment, takes off film up to composite package film.
Embodiment 3
0.2g pulullan polysaccharide is weighed, 20mL water is added, the heating stirring 2.5h at 82 DEG C obtains pulullan polysaccharide solution；
0.13g beta glucan is weighed, 20mL water is added, the heating stirring 2.5h at 75 DEG C obtains beta glucan solution.
Pulullan polysaccharide solution and beta glucan solution are mixed, 0.13g glycerol is added and is cooled to room after mixing evenly
Temperature obtains mixed liquor；Mixed liquor is stood to 16h at 0~4 DEG C to eliminate bubble, obtains casting solution.
Casting solution is poured into polyethylene plate, then plate is put into 40 DEG C of baking oven, is taken out after 10h.By plate
It is placed in 45% humidity environment and balances 40h, take off film up to composite package film.
Embodiment 4
0.05g pulullan polysaccharide is weighed, 20mL water is added, the heating stirring 1.8h at 85 DEG C obtains pulullan polysaccharide solution；
0.3g beta glucan is weighed, 20mL water is added, the heating stirring 1.8h at 85 DEG C obtains beta glucan solution.
Pulullan polysaccharide solution and beta glucan solution are mixed, 0.15g glycerol is added and is cooled to room after mixing evenly
Temperature obtains mixed liquor；Mixed liquor is stood to 14h at 0~4 DEG C to eliminate bubble, obtains casting solution.
Casting solution is poured into polyethylene plate, then plate is put into 50 DEG C of baking oven, is taken out after 15h.By plate
It is placed in 40% humidity environment and balances 36h, take off film up to composite package film.
Embodiment 5
0.1g pulullan polysaccharide is weighed, 20mL water is added, the heating stirring 2h at 78 DEG C obtains pulullan polysaccharide solution；Claim
0.2g beta glucan is taken, 20mL water is added, the heating stirring 2h at 75 DEG C obtains beta glucan solution.
Pulullan polysaccharide solution and beta glucan solution are mixed, 0.1g glycerol is added and is cooled to room after mixing evenly
Temperature obtains mixed liquor；Mixed liquor is stood to 20h at 0~4 DEG C to eliminate bubble, obtains casting solution.
Casting solution is poured into polyethylene plate, then plate is put into 45 DEG C of baking oven, is taken out after 10h.By plate
It is placed in 50% humidity environment and balances 30h, take off film up to composite package film.
Embodiment 6
0.25g pulullan polysaccharide is weighed, 20mL water is added, the heating stirring 2.3h at 83 DEG C obtains pulullan polysaccharide solution；
0.1g beta glucan is weighed, 20mL water is added, the heating stirring 2.2h at 80 DEG C obtains beta glucan solution.
Pulullan polysaccharide solution and beta glucan solution are mixed, 0.12g glycerol is added and is cooled to room after mixing evenly
Temperature obtains mixed liquor；Mixed liquor is stood for 24 hours at 0~4 DEG C to eliminate bubble, casting solution is obtained.
Casting solution is poured into polyethylene plate, then plate is put into 30 DEG C of baking oven, is taken out after 10h.By plate
It is placed in 53% humidity environment and balances 48h, take off film up to composite package film.
Comparative example 1
0.3g pulullan polysaccharide is weighed, 20mL water is added, the heating stirring 1.5h at 75 DEG C obtains pulullan polysaccharide solution.
0.06g glycerol is added into pulullan polysaccharide solution to be cooled to room temperature after mixing evenly, obtains mixed liquor；It will mixing
Liquid stands 12h at 0~4 DEG C to eliminate bubble, obtains casting solution.
Casting solution is poured into polyethylene plate, then plate is put into 30 DEG C of baking oven, is taken out after 10h.By plate
It is placed in 50% humidity environment and balances for 24 hours, take off film up to composite package film.
Comparative example 2
0.3g pulullan polysaccharide is weighed, 20mL water is added, the heating stirring 1.5h at 75 DEG C obtains pulullan polysaccharide solution；
0.01g beta glucan is weighed, 30mL water is added, the heating stirring 1.5h at 80 DEG C obtains beta glucan solution.
Pulullan polysaccharide solution and beta glucan solution are mixed, 0.06g glycerol is added and is cooled to room after mixing evenly
Temperature obtains mixed liquor；Mixed liquor is stood to 12h at 0~4 DEG C to eliminate bubble, obtains casting solution.
Casting solution is poured into polyethylene plate, then plate is put into 30 DEG C of baking oven, is taken out after 10h.By plate
It is placed in 50% humidity environment and balances for 24 hours, take off film up to composite package film.
Detect the composite package film of the preparation of embodiment 1,2,4, infared spectrum such as Fig. 3 respectively using infrared detection scanner
It is shown.From figure 3, it can be seen that there is beta glucan β-glycosidic bond characteristic peak 890cm in the infared spectrum of three embodiments-1, the peak-OH 1073cm that ins succession of No. 6 position carbon atoms-1And the peak-OH 1688cm that C-O ins succession-1；The C-O-C of pulullan polysaccharide
Peak 1028cm-1The peak-OH the 1610cm in succession with C-O-1.Beta glucan in composite package film prepared by known embodiments 1,2,4
Accounting gradually rises, and Fig. 3 is it can be found that the accounting with beta glucan gradually rises for observation, 1070cm-1Peak gradually weaken,
Illustrate to be interacted between pulullan polysaccharide and beta glucan；1688cm-1The peak at place gradually weakens to lower wave number movement,
Illustrate the interaction between pulullan polysaccharide and beta glucan there are intermolecular hydrogen bonding, illustrate accounting with beta glucan by
Edge up height, the mechanical performance enhancing of composite package film.
The composite package film for scanning the preparation of embodiment 1,3,4 respectively using electron-microscope scanning instrument is schemed with observing its microstructure
4,5,6 be corresponding in turn to the preparation of embodiment 1,3,4 composite package film electron-microscope scanning figure, (a) is to be cut with blade in every attached drawing
After cutting composite package film, the electron microscope in film section；It (b) is membrane plane electron microscope.As can be seen that each figure (a) is equal from Fig. 4,5,6
Sawtooth is presented, illustrates that the composite package film of each embodiment preparation has good compactness, is not easy to cut；Each figure (b) shows
Flat and smooth plane illustrates that the composite package film of each embodiment preparation has good homogeneity.Prepared by embodiment 1,3,4 answers
The accounting for closing beta glucan in packaging film is in rising trend.Compare three attached drawings, it can be seen that with beta glucan accounting by
Edge up height, and film surface is more flat and smooth, illustrates to increase the compatible of beta glucan and pulullan polysaccharide with beta glucan accounting
Property is gradually taken on a new look.And the dentalation occurred on section is more obvious, and illustrates the cause of film with the increase of beta glucan accounting
Close property is stronger, is more not easy to cut.
It is detected using the composite package film that Differential Scanning Calorimetry prepares each embodiment, testing result such as Fig. 7 institute
Show.
It can be seen from figure 7 that the phase transition temperature of each embodiment composite package film is respectively 124.21 DEG C, 134.95 DEG C,
135.03℃,126.13℃,130.43℃,128.96℃.And each embodiment composite package film homologous thread is all more similar, says
Pulullan polysaccharide and beta glucan is intermolecular forms hydrogen bond in bright composite package film, composite package film has good compatibility
And thermal stability.
Performance test
The film prepared respectively to Examples 1 to 6 and comparative example 1~2 carries out following performance test, and records result such as table
Shown in 1.
Detection project includes: that the moist, oxygen barrier of resistance, grease transit dose, molten water time, transparency, sealing strength, tension are strong
Degree and fracture elongation.
Detection method:
Tensile strength and fracture elongation: according to GB/T 1040.3-2006 " the measurement third portion of plastic tensile performance:
The experimental condition of film and thin slice " method, is detected using TA physical property measurement instrument；
It hinders moist: according to GB1037-1988 " plastic film and sheet material water vapor permeability test method (cup type method) " method,
It is detected using moisture vapor transmission cup；
Oxygen barrier: according to ASTM D 3985-95 method, OX-TRAN2/21MD oxygen is applied under room temperature, condition of normal pressure
Transmission measurement instrument is detected.(constant incubator-chitosan/lentinan edible film performance study and characterization)
The molten water time: taking the membrane sample for being cut into 2cm × 2cm specification, is placed in the beaker for filling with 90 DEG C of water, starts to count
When, when observing in water under sunlight without particulate matter after a period of time, stop timing, film dissolution expends the time for the molten water time；
Grease transit dose: it is detected according to GB/T 16929-1997 " the saturating oiliness of packaging material test method " method；
Transparency: according to " Zavareze Eda, R, et al.Development of oxidised and heat-
Moisture treated potato starch film [J] .Food Chem, 2012.132 (1): provides in 344-50 "
Method is detected.
1 performance test of table
As seen from the above table, composite package film made from Examples 1 to 6 have the moist, oxygen barrier of good resistance, saturating oiliness,
Water solubility, transparency, sealing strength, tensile strength and fracture elongation, and hindering moist, tensile strength, transparency and breaking
It splits elongation percentage and is substantially better than comparative example 1 and comparative example 2, illustrate that each embodiment of compound addition pulullan polysaccharide and beta glucan is multiple
Packaging film is closed than only having the comparative example 1 of pulullan polysaccharide and the less comparative example 2 of beta glucan accounting that there is better mechanicalness
Energy and barrier characteristics.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, for this field
For technical staff, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any
Modification, equivalent replacement, improvement etc. should all be included within the scope of the present invention.
Claims (9)
1. a kind of composite package film, which is characterized in that including pulullan polysaccharide, beta glucan and glycerol.
2. composite package film as described in claim 1, which is characterized in that the raw material including following parts by weight: 0.3~0.05
Part pulullan polysaccharide, 0.05~0.3 part of beta glucan and 0.06~0.15 part of glycerol.
3. a kind of preparation method of composite package film, which comprises the following steps:
Pulullan polysaccharide is dissolved in water, obtains pulullan polysaccharide solution；
Beta glucan is dissolved in water, obtains beta glucan solution；
The pulullan polysaccharide solution and the beta glucan solution are mixed, glycerol is added, deaeration is handled after mixing evenly, must be cast
Film liquid；
The casting solution is layered in film formation device, film forming is baked, obtains composite package film.
4. the preparation method of composite package film as claimed in claim 3, which is characterized in that each component wraps according to parts by weight
It includes: 0.3~0.05 part of pulullan polysaccharide, 0.05~0.3 part of beta glucan and 0.06~0.15 part of glycerol.
5. the preparation method of composite package film as claimed in claim 3, which is characterized in that described to be dissolved in pulullan polysaccharide
Water, the step of obtaining pulullan polysaccharide solution include:
Pulullan polysaccharide is taken, water is added, 1.5~2.5h of heating stirring at 75~85 DEG C obtains pulullan polysaccharide solution.
6. the preparation method of composite package film as claimed in claim 3, which is characterized in that it is described that beta glucan is dissolved in water,
Beta glucan solution the step of include:
Beta glucan is taken, water is added, 1.5~2.5h of heating stirring at 75~85 DEG C obtains beta glucan solution.
7. the preparation method of composite package film as claimed in claim 3, which is characterized in that the mixing pulullan polysaccharide
Glycerol is added in solution and the beta glucan solution, and deaeration is handled after mixing evenly, and the step of obtaining casting solution includes:
The pulullan polysaccharide solution and the beta glucan solution are mixed, glycerol is added and is cooled to room temperature after mixing evenly,
Obtain mixed liquor；
The mixed liquor stands to 12 at 0~4 DEG C~for 24 hours to eliminate bubble, obtain casting solution.
8. the preparation method of composite package film as claimed in claim 3, which is characterized in that described to be layered on into the casting solution
In the step of in film device, baking forms a film, and obtains composite package film, the temperature of the baking is 30~50 DEG C.
9. the preparation method of composite package film as claimed in claim 3, which is characterized in that described to be layered on into the casting solution
In film device, film forming is baked, the step of obtaining composite package film includes:
The casting solution is layered in film formation device, film forming is baked；
The film formation device of overlay film is placed in 24~48h in the environment that humidity is 40~55%, obtains composite package film.
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