CN105885113B - A kind of bilayer edible film and its preparation method and application - Google Patents
A kind of bilayer edible film and its preparation method and application Download PDFInfo
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- CN105885113B CN105885113B CN201610428889.2A CN201610428889A CN105885113B CN 105885113 B CN105885113 B CN 105885113B CN 201610428889 A CN201610428889 A CN 201610428889A CN 105885113 B CN105885113 B CN 105885113B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
- C08L3/02—Starch; Degradation products thereof, e.g. dextrin
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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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2303/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2303/02—Starch; Degradation products thereof, e.g. dextrin
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/02—Starch; Degradation products thereof, e.g. dextrin
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2489/00—Characterised by the use of proteins; Derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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Abstract
The present invention provides a kind of double-deck edible films and its preparation method and application.Heretofore described bilayer edible film can be used as food pack.Any harmful chemicals object is not added in the double-deck edible film that the application provides, does not have any damage to human body.In addition, the experimental results showed that, the double-deck edible film that the present invention obtains has excellent dissolubility, mechanical property, water vapour permeability and oxygen permeability.Wherein, the tensile strength of the double-deck edible film is up to 14.4MPa, and elongation at break is up to 55.4%, and optimal moisture permeable coefficient is 0.61 × 10‑12(kg·m)/(m2SPa), it is 0.77 × 10 that oxygen permeability coefficient is optimal‑18m3/(m2SPa), dissolution time most fast at 100 DEG C is 155s.The sealing strength highest for the food pack that the present invention obtains can reach 340N/m.
Description
Technical field
The present invention relates to packaging material for food technical field, more particularly to a kind of double-deck edible film and preparation method thereof
And application.
Background technology
With people's the accelerating rhythm of life, instant food industry entry rapid growth period, in the daily of people
Very important position is occupied in life.But instant food is also made while bringing great convenience to people’s lives
Into many environmental problems.
Commercially available instant noodles, convenient rice noodle facilitate stewed noodles and the instant food such as pepper and chili soup are facilitated nearly all to be furnished with seasoning packet,
And more inherently a kind of flavor pack of the instant food such as chafing dish bottom flavorings and hotpot condiment sauce.At present, flavor pack in the market is mainly adopted
With materials such as bidirectional stretching polypropylene film (BOPP), aluminized complex film (CPPAL) or haloflexes (CPE).Although packaging
Description of materials is more, but general all too busy to get away plastics scope.There are following drawbacks for plastics package：It is not degradable, pollute environment；No
Just it breaks a seal:The plastics package of significant proportion is not easy to break a seal or because undue force easily leads to condiment leakage in material packet, neither defend
It is raw, also influence dining mood；Influence food security:Flavor pack is torn repeatedly has different degrees of microorganism infection, plastic bag
Pack is put together with exposed food, easily generates secondary pollution.
Edible material is that being used for of rising in recent years substitutes a kind of novel environment-friendly materials of traditional plastic material, state
The inside and outside research report about edible material emerges in an endless stream.But edible material is generally all added with hard in the prior art
The chemical substances such as resin acid, palmitic acid, glycerine, 120,000 base sodium sulphate, petroleum ether and tertiary sodium phosphate, and these chemical substances add
The safety of edible material, do harm to huamn body can be destroyed by adding.
Invention content
It is provided by the invention the purpose of the present invention is to provide a kind of double-deck edible film and its preparation method and application
Any harmful chemicals object is not added in double-deck edible film, does not have any damage to human body.
In order to achieve the above-mentioned object of the invention, the present invention provides following technical scheme：
The present invention provides a kind of double-deck edible film, including stratum granulosum and the corn for being arranged on the starch layer surface
Alcohol soluble protein layer；
The stratum granulosum includes the component of following parts by weight：
30~120 parts of starch；
2~5 parts of plants essential oil；
Counted using the parts by weight of starch in the stratum granulosum as 30~120 parts, the zeins layer include 10~
20 parts of zeins.
Preferably, the stratum granulosum includes the component of following parts by weight：
50~100 parts of starch；
3~4 parts of plants essential oil；
Counted using the parts by weight of starch in the stratum granulosum as 50~100 parts, the zeins layer include 13~
18 parts of zeins.
Preferably, the starch in wheaten starch, potato starch and cornstarch one kind, two or three.
Preferably, the plants essential oil in lemon, Rosa Damascana and thyme essential oil one kind, two kinds or three
Kind.
Preferably, the thickness of the stratum granulosum is 0.01~0.5mm；
The thickness of the bilayer edible film is 0.011~0.8mm.
Preferably, the zeins layer is arranged on the surface of the stratum granulosum side.
The present invention provides the preparation methods of the double-deck edible film, include the following steps：
The mixture of starch, plants essential oil and water is subjected to first time film forming, obtains starch film；
The mixed liquor of zeins and ethyl alcohol is carried out second on a surface of the starch film to form a film, is obtained
Double-deck edible film；
The thickness of the stratum granulosum is 0.01~0.5mm；
The thickness of the bilayer edible film is 0.011~0.8mm.
The present invention also provides application of the double-deck edible film as food pack.
Preferably, the food pack for convenience of food condiment packaging bag.
Preferably, the food pack is using stratum granulosum as outer surface.
The present invention provides a kind of double-deck edible films and its preparation method and application.Bilayer provided by the invention is edible
Property film include stratum granulosum and be arranged on the zeins layer of the starch layer surface；The stratum granulosum includes following weight
The component of number：30~120 parts of starch；2~5 parts of plants essential oil；Using the parts by weight of starch in the stratum granulosum as 30~120
Part meter, the zeins layer include 10~20 parts of zeins.Heretofore described bilayer edible film
Food pack can be used as.Any harmful chemicals object is not added in the double-deck edible film that the application provides, to human body
There is no any damage.In addition, the experimental results showed that, the double-deck edible film that the present invention obtains has excellent dissolubility, power
Learn performance, water vapour permeability and oxygen permeability.Wherein, the tensile strength of the double-deck edible film is up to 14.4MPa, fracture
Elongation is up to 55.4%, and optimal moisture permeable coefficient is 0.61 × 10-12(kg·m)/(m2SPa), oxygen permeability coefficient is optimal is
0.77×10-18m3/(m2SPa), dissolution time most fast at 100 DEG C is 155s.The food pack that the present invention obtains
Sealing strength highest can reach 340N/m.
Specific embodiment
The present invention provides a kind of double-deck edible film, including stratum granulosum and the corn for being arranged on the starch layer surface
Alcohol soluble protein layer；
The stratum granulosum includes the component of following parts by weight：
30~120 parts of starch；
2~5 parts of plants essential oil；
Counted using the parts by weight of starch in the stratum granulosum as 30~120 parts, the zeins layer include 10~
20 parts of zeins.
In the present invention, the stratum granulosum in the double-deck edible film includes 30~120 parts of starch, preferably 50~
100 parts, more preferably 60~80 parts.In the present invention, the starch is preferably wheaten starch, potato starch and cornstarch
In one kind, two or three.
In the present invention, the stratum granulosum in the double-deck edible film includes 2~5 parts of plants essential oils, and preferably 3~4
Part.In the present invention, the additive amount of the plants essential oil can be specially 2 parts, 3 parts, 4 parts or 5 parts.In the present invention, the plant
Object essential oil be preferably one kind in lemon, Rosa Damascana and thyme essential oil, two or three.
In the present invention, the thickness of the stratum granulosum is preferably 0.01~0.5mm, more preferably 0.05~0.4mm, optimal
It is selected as 0.1~0.3mm.
In the present invention, it is counted using the parts by weight of starch in the stratum granulosum as 30~120 parts, the zeins
Layer includes 10~20 parts of zeins, more preferably preferably 13~18 parts, 15~16 parts.
In the present invention, the zeins layer is arranged on the surface of the stratum granulosum side.
In the present invention, the thickness of the double-deck edible film is preferably 0.011~0.8mm, more preferably 0.051~
0.5, most preferably 0.11~0.35.
The present invention is not particularly limited the source of the starch, plants essential oil and zeins, specifically can be with
Commercial product for the starch, plants essential oil and zeins.
The present invention also provides a kind of preparation methods of above-mentioned double-deck edible film, include the following steps：
First time film forming will be carried out including the mixture of starch, plants essential oil and water, obtain starch film；
The mixed liquor including zeins and ethyl alcohol is carried out second on the surface of the starch film to form a film, is obtained
Double-deck edible film；
The thickness of the stratum granulosum is 0.01~0.5mm；
The thickness of the bilayer edible film is 0.011~0.8mm.
The present invention will carry out first time film forming including the mixture of starch, plants essential oil and water, obtain starch film.In this hair
In bright, the mass ratio of the starch and water is preferably (30~120):(100~250), more preferably (50~100):(120~
200), most preferably (60~80):(150~180).The present invention does not have particular/special requirement to the water, can be specifically from
Sub- water, pure water, distilled water or drinking water.
The present invention does not have the order by merging of the starch, plants essential oil and water particular/special requirement, and three can be according to arbitrary
Sequence is mixed.In the present invention, the mixture of the starch, plants essential oil and water preferably mixes under conditions of stirring.
In the present invention, the stirring can be carried out specifically in blender.In the present invention, the frequency of the stirring be preferably 10~
20Hz, more preferably 12~18Hz, most preferably 14~16Hz；The time of the stirring is preferably 8~13 minutes, specifically may be used
Think 8 minutes, 9 minutes, 10 minutes, 11 minutes, 12 minutes or 13 minutes.
The present invention is granulated mixture, then carries out first time film forming again preferably after the mixing.In this hair
In bright, the granulation can be carried out specifically in comminutor.In the present invention, the temperature of the granulation is preferably 120~130 DEG C,
More preferably 122~128 DEG C, most preferably 124~126 DEG C.In the present invention, the granularity of the granulation is preferably 2~50mm,
More preferably 5~40mm, most preferably 10~30mm.
The specific embodiment that the present invention forms a film to the first time does not have particular/special requirement, using those skilled in the art institute
Well known thin film-forming method carries out.In the present invention, the first time film forming is preferably carried out using extrusion curtain coating mode.At this
In invention, the temperature of the first time film forming is preferably 120~130 DEG C, more preferably 122~128 DEG C, most preferably 124~
126℃。
The present invention mixed liquor including zeins and ethyl alcohol is carried out on the surface of the starch film second into
Film obtains double-deck edible film.In the present invention, the mass ratio of the zeins and ethyl alcohol be preferably (10~
20):(150~300), more preferably (12~18):(180~280), most preferably (14~16):(200~250).In this hair
In bright, the volumetric concentration of the ethyl alcohol is preferably 94~98%, can be specifically 94%, 95%, 96%, 97% or 98%.
The present invention is not particularly limited the source of the ethyl alcohol, can be specifically the commercial product of the ethyl alcohol.
The present invention does not have particular/special requirement to the hybrid mode of the zeins and ethyl alcohol, preferably by the molten egg of corn alcohol
It is dissolved in ethyl alcohol in vain.
The present invention does not have particular/special requirement to the specific embodiment of second of film forming, using those skilled in the art institute
Well known thin film-forming method carries out.In the present invention, second of film forming preferably using curtain coating mode or smears mode
It carries out.
After second forms a film, the present invention is preferably dried obtained bilayer film, obtains double-deck edible film.
In the present invention, the drying is preferably drying at room temperature.
The bilayer being prepared the present invention also provides a kind of above-mentioned double-deck edible film or above-mentioned preparation method can
Application of the feeding habits film as food pack.
In the present invention, the double-deck edible film is used as food pack, specifically, the food pack
The preferably condiment packaging bag of instant food.In the present invention, the condiment packaging bag of the instant food can be market
The packaging bag of the food dressing of upper existing any kind, specific such as instant noodles, convenient rice noodle facilitate stewed noodles and facilitate recklessly
The packet of the products such as the seasoning packet or chafing dish bottom flavorings of the instant food such as peppery soup, hotpot condiment sauce, thick broad-bean sauce, jam and sweet fermented flour sauce
Pack.In the present invention, the food pack is preferably using stratum granulosum as outer surface.
In the present invention, the food pack can have any shape, according to product demand or the market demand to this
The double-deck edible film that application provides is cut.The present invention is not special to the production method of the food pack
It is required that it is prepared according to the preparation method of food pack well-known to those skilled in the art.In the present invention, institute
Food pack is stated preferably to be prepared using the method for compacting sealing.In the present invention, the temperature of the compacting sealing is 120
~130 DEG C, more preferably 122~128 DEG C, most preferably 124~126 DEG C.The present invention does not have the time of the compacting sealing
The food pack can be sealed for particular/special requirement.
The present invention provides a kind of double-deck edible films and its preparation method and application.Bilayer provided by the invention is edible
Property film include stratum granulosum and be arranged on the zeins layer of the starch layer surface；The stratum granulosum includes following weight
The component of number：30~120 parts of starch；2~5 parts of plants essential oil；Using the parts by weight of starch in the stratum granulosum as 30~120
Part meter, the zeins layer include 10~20 parts of zeins.The double-deck edible film that the application provides
In do not add any harmful chemicals object, there is no any damage to human body.In addition, the experimental results showed that, what the present invention obtained
Double-deck edible film has excellent dissolubility, mechanical property, water vapour permeability and oxygen permeability.Wherein, the bilayer is edible
The tensile strength of property film is up to 14.4MPa, and elongation at break is up to 55.4%, and optimal moisture permeable coefficient is 0.61 × 10-12
(kg·m)/(m2SPa), it is 0.77 × 10 that oxygen permeability coefficient is optimal-18m3/(m2SPa), during dissolving most fast at 100 DEG C
Between be 155s.The sealing strength highest for the food pack that the present invention obtains can reach 340N/m.
Double-deck edible film provided by the invention and its preparation method and application is carried out with reference to embodiment detailed
Explanation, but they cannot be interpreted as limiting the scope of the present invention.
Embodiment 1
The preparation of starch film：30 portions of wheaten starches, 70 parts of cornstarch, 2 parts of lemons, 150 parts of water are added in first
Into blender, 10min is stirred under 15Hz speed, by uniform mixed material by comminutor the extruder grain at 120 DEG C.
It recycles and squeezes out the individual layer wheat and corn starch film that the obtained thickness of amylum body extrusion is 0.1mm by casting apparatus.
The preparation of double-deck edible film：10 parts of zeins are dissolved in 150 parts of ethyl alcohol, the molten egg of corn alcohol is made
Maize alcohol-soluble protein film liquid is uniformly applied to the surface of starch film side, it is beautiful that double-deck wheat is made after drying at room temperature by tunica albuginea liquid
Rice starch-zeins bilayer edible film, thickness 0.115mm.
The mechanical property and permeability of double-deck edible film that present invention test obtains, the results show that its tension is strong
It spends for 13.3MPa, elongation at break 48.7%, moisture permeable coefficient 0.61 × 10-12(kg m)/(m2S Pa), oxygen permeability coefficient is
0.81×10-18m3/(m2s Pa)。
Double-deck edible film obtained above is prepared food pack by the present invention：Using maize alcohol-soluble protein film as internal layer
Film carries out compacting sealing under the conditions of 120 DEG C, makes packaging bag, the condiment packaging bag as instant food.
The sealing strength and solubility property of condiment packaging bag that present invention test obtains, the results show that its sealing strength
For 330N/m.In 100 DEG C of hot water, about 155s can be completely dissolved.
Embodiment 2
The preparation of starch film：First by 40 parts of potato starch, 60 portions of wheaten starches, 2.5 parts of Rosa Damascanas, 170 parts of water
It is added in blender, 15min is stirred under 16Hz speed, uniform mixed material is squeezed by comminutor at 125 DEG C
It is granulated.It recycles and squeezes out the individual layer potato wheaten starch film that the obtained thickness of amylum body extrusion is 0.12mm by casting apparatus.
The preparation of double-deck edible film：15 parts of zeins are dissolved in 180 parts of ethyl alcohol, the molten egg of corn alcohol is made
Maize alcohol-soluble protein film liquid is uniformly applied to the surface of starch film side, double-deck potato is made after drying at room temperature by tunica albuginea liquid
Wheaten starch-zeins bilayer edible film, thickness 0.13mm.
The mechanical property and permeability of double-deck edible film that present invention test obtains, the results show that its tension is strong
It spends for 12.8MPa, elongation at break 55.4%, moisture permeable coefficient 0.71 × 10-12(kg m)/(m2S Pa), oxygen permeability coefficient is
0.77×10-18m3/(m2s Pa)。
Double-deck edible film obtained above is prepared food pack by the present invention：Using maize alcohol-soluble protein film as internal layer
Film carries out compacting sealing under the conditions of 130 DEG C, makes packaging bag, the condiment packaging bag as instant food.
The sealing strength and solubility property of condiment packaging bag that present invention test obtains, the results show that its sealing strength
For 335N/m.In 100 DEG C of hot water, 180s can be completely dissolved.In 100 DEG C of hot water, about 160s can be completely dissolved.
Embodiment 3
The preparation of starch film：80 parts of potato starch, 2 parts of thyme essential oils, 160 parts of water are added to blender first
In, stir 15min under 15Hz speed, by uniform mixed material by comminutor the extruder grain at 130 DEG C.It recycles and squeezes
Go out casting apparatus and amylum body is squeezed out to the individual layer potato starch film for being made that thickness is 0.11mm.
The preparation of double-deck edible film：20 parts of zeins are dissolved in 200 parts of ethyl alcohol, the molten egg of corn alcohol is made
Maize alcohol-soluble protein film liquid is uniformly applied to the surface of starch film side, double-deck potato is made after drying at room temperature by tunica albuginea liquid
Starch-zeins bilayer edible film, thickness 0.14mm.
The mechanical property and permeability of double-deck edible film that present invention test obtains, the results show that its tension is strong
It spends for 14.4MPa, elongation at break 47.3%, moisture permeable coefficient 0.67 × 10-12(kg m)/(m2S Pa), oxygen permeability coefficient is
0.88×10-18m3/(m2s Pa)。
Double-deck edible film obtained above is prepared food pack by the present invention：Using maize alcohol-soluble protein film as internal layer
Film carries out compacting sealing under the conditions of 130 DEG C, makes packaging bag, the condiment packaging bag as instant food.
The sealing strength and solubility property of condiment packaging bag that present invention test obtains, the results show that its sealing strength
For 340N/m.In 100 DEG C of hot water, about 175s can be completely dissolved.
The dissolubility of double-deck edible film, mechanical property, water vapour permeability and the oxygen flow that the present invention also obtains the present invention
The sealing strength of performance and food pack is detected, and testing result is as shown in table 1.
1 embodiment of the present invention of table, 1~3 particular product performance parameters table
As can be seen from Table 1, the obtained double-deck edible film of the present invention has excellent dissolubility, mechanical property, thoroughly
Wet performance and oxygen permeability.Wherein, the tensile strength of the double-deck edible film is up to 14.4MPa, and elongation at break is most
A height of 55.4%, optimal moisture permeable coefficient is 0.61 × 10-12(kg·m)/(m2SPa), it is 0.77 × 10 that oxygen permeability coefficient is optimal-18m3/(m2SPa), dissolution time most fast at 100 DEG C is 155s.The sealing strength for the food pack that the present invention obtains
Highest can reach 340N/m.
As seen from the above embodiment, the present invention provides a kind of double-deck edible films and its preparation method and application.This
The double-deck edible film that invention provides includes stratum granulosum and is arranged on the zeins layer of the starch layer surface；It is described
Stratum granulosum includes the component of following parts by weight：30~120 parts of starch；2~5 parts of plants essential oil；With starch in the stratum granulosum
Parts by weight be 30~120 parts of meters, the zeins layer includes 10~20 parts of zeins.The application carries
Any harmful chemicals object is not added in the double-deck edible film supplied, does not have any damage to human body.In addition, experimental result
Show that the double-deck edible film that the present invention obtains has excellent dissolubility, mechanical property, water vapour permeability and oxygen permeability.
Wherein, the tensile strength of the double-deck edible film is up to 14.4MPa, and elongation at break is up to 55.4%, moisture-inhibiting system
Optimal number is 0.61 × 10-12(kg·m)/(m2SPa), it is 0.77 × 10 that oxygen permeability coefficient is optimal-18m3/(m2SPa),
Most fast dissolution time is 155s at 100 DEG C.The sealing strength highest for the food pack that the present invention obtains can reach 340N/
m。
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of bilayer edible film, including stratum granulosum and the zeins layer for being arranged on the starch layer surface；
The stratum granulosum includes the component of following parts by weight：
30~120 parts of starch；
2~5 parts of plants essential oil；
It is counted using the parts by weight of starch in the stratum granulosum as 30~120 parts, the zeins layer includes 10~20 parts
Zeins.
2. bilayer edible film according to claim 1, which is characterized in that the stratum granulosum includes following parts by weight
Component：
50~100 parts of starch；
3~4 parts of plants essential oil；
It is counted using the parts by weight of starch in the stratum granulosum as 50~100 parts, the zeins layer includes 13~18 parts
Zeins.
3. bilayer edible film according to claim 1 or 2, which is characterized in that the starch is wheaten starch, Ma Ling
One kind in sweet potato starch and cornstarch, two or three.
4. it is according to claim 1 or 2 bilayer edible film, which is characterized in that the plants essential oil for lemon,
One kind in Rosa Damascana and thyme essential oil, two or three.
5. bilayer edible film according to claim 1 or 2, which is characterized in that the thickness of the stratum granulosum is 0.01
~0.5mm；
The thickness of the bilayer edible film is 0.011~0.8mm.
6. bilayer edible film according to claim 1 or 2, which is characterized in that the zeins layer setting
On the surface of the stratum granulosum side.
7. the preparation method of the double-deck edible film described in claim 1~6 any one, includes the following steps：
First time film forming will be carried out including the mixture of starch, plants essential oil and water, obtain starch film；
The mixed liquor including zeins and ethyl alcohol is carried out second on the surface of the starch film to form a film, obtains bilayer
Edible film；
The thickness of the stratum granulosum is 0.01~0.5mm；
The thickness of the bilayer edible film is 0.011~0.8mm.
8. prepared by the preparation method described in the double-deck edible film or claim 7 described in claim 1~6 any one
Application of the double-deck edible film as food pack.
9. application according to claim 8, which is characterized in that the food pack for convenience of food flavoring package
Bag.
10. application according to claim 8 or claim 9, which is characterized in that the food pack is using stratum granulosum as appearance
Face.
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| CN108299685A (en) * | 2017-12-01 | 2018-07-20 | 星光印刷（苏州）有限公司 | A kind of degradable food-grade packaging film and preparation method |
| CN112552542A (en) * | 2018-10-30 | 2021-03-26 | 顺德职业技术学院 | Preparation method of intelligent indicating edible film |
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| CN103159970A (en) * | 2013-04-09 | 2013-06-19 | 河南工业大学 | Preparation method of edible film with antibacterial and antioxidant functions |
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