CN105348614A - Controlled release active gas adjustment fresh-keeping packaging material and preparation method thereof - Google Patents

Controlled release active gas adjustment fresh-keeping packaging material and preparation method thereof Download PDF

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Publication number
CN105348614A
CN105348614A CN201510890282.1A CN201510890282A CN105348614A CN 105348614 A CN105348614 A CN 105348614A CN 201510890282 A CN201510890282 A CN 201510890282A CN 105348614 A CN105348614 A CN 105348614A
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China
Prior art keywords
fruit
fresh
keeping
vegetables
ethylene
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Pending
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CN201510890282.1A
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Chinese (zh)
Inventor
付亚波
许文才
李东立
石佳子
曹国荣
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Beijing Institute of Graphic Communication
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Beijing Institute of Graphic Communication
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Priority to CN201510890282.1A priority Critical patent/CN105348614A/en
Publication of CN105348614A publication Critical patent/CN105348614A/en
Pending legal-status Critical Current

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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
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • 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
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/066—LDPE (radical process)

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Packages (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)

Abstract

The invention discloses a controlled release active gas adjustment fresh-keeping packaging material and a preparation method thereof, and belongs to the technical field of food and fruit and vegetable fresh-keeping technologies. The packaging material comprises the following main components: 0.5-10 wt% of a natural antibacterial agent, 5-30 wt% of ethylene-vinyl acetate copolymer, 1-45 wt% of block copolymer and no less than 40 wt% of polyolefin master batch, and is prepared through the following steps: mixing the materials according to the ratio; after carrying out melt blending granulation, carrying out film blowing or extrusion molding. As a packaging film of fresh fruit and vegetables, the material can provide relatively suitable humidity (RH70-98%) and suitable oxygen and carbon dioxide gas adjustment packaging atmosphere for fruit and vegetables, and the natural antibacterial agent is slowly released, so that the respiratory action of fruit and vegetables and the growth of fungus on the surfaces of fruit and vegetables are inhibited, and the effect that the fresh-keeping period of fruit and vegetables is prolonged is achieved.

Description

Active controlled atmosphere fresh-keeping packing material of a kind of Co ntrolled release and preparation method thereof
Technical field
The invention belongs to food and postharvest technology of fruits and vegetables field, be related specifically to a kind of can the preparation and application of active controlled atmosphere fresh-keeping packing material of Co ntrolled release preservation agent.
Technical background
The agricultural-food such as fresh fruit and vegetables are after gathering, and due to stronger breathing and transpiration, along with the evaporation of moisture and the consumption of nutritive substance, atrophy is even rotten gradually, are difficult to fresh-keeping in transport and standing storage process.Therefore, the normal packing film with certain gas permeation function that adopts is packed fresh fruit of vegetables, not only can prevent moisture transpiration, can also reduce the oxygen concentration in packaging, thus slow down the respiration of fruits and vegetables, extend the freshness date of fresh fruit of vegetables.A kind of fruit and vegetable fresh-keeping agent cartridge bag of controllable release and the making method of packing film is disclosed in the patent 20130071444.X that I has authorized, by this packing film for fresh fruit of vegetables breathing provides suitable gas concentration, with the consumption of the respiratory rate and nutritive substance that reduce fruits and vegetables.By packing the preservation agent cartridge bag of interior placement, the preservation agent such as Co ntrolled release ethanol and acetaldehyde in packaging, plays and suppresses growing and growing of the mushrooms such as fruit surface mould, therefore, in prolongation fresh fruit of vegetables freshness date, has good application.But this Freshkeeping Packaging total solution is due to the complicacy of technological process, and discharge the antibacterial limitednumber of preservation agent and make it be subject to a definite limitation in preserving fruit and vegetable utilizing application aspect.This patent is the advantage based on above patent, while maintenance packing film permeability, by preferred active antibacterial component and material preparation process, realize the effect of active modified atmosphere packaging atmosphere fresh fruit of vegetables being provided to Co ntrolled release preservation agent, reach the object extending the preserving fruit and vegetable utilizing phase.
Summary of the invention
The invention reside in and overcome shortcoming of the prior art, the active controlled atmosphere fresh-keeping packing material of a kind of fruits and vegetables of Co ntrolled release preservation agent and technology of preparing thereof are provided.
Drip irrigation device of the present invention is:
A kind of active controlled atmosphere fresh-keeping packing material with Co ntrolled release, it is characterized in that: the main component of material is the natural antibacterial agent that quality is divided into 0.5 ~ 10wt%, the ethylene-vinyl acetate copolymer of 5 ~ 30wt%, segmented copolymer and the polyolefine material being not less than 40wt% of 1 ~ 45wt%, natural antibacterial agent is one or both mixture of thymol and menthol, segmented copolymer is styrene-ethylene block copolymer, styrene-butadiene block copolymer, styrene-butadiene rubber(SBR), one or more in styrene-ethylene-butadiene segmented copolymer and derivative thereof, polyolefine is PE, LDPE, LLDPE, or one or more in the material such as CPP, preferred LDPE, LDPE and LLDPE combination or LDPE and CPP combination.
The preparation method characteristic of this material is, first respectively by natural antibacterial agent, ethylene-vinyl acetate copolymer and the granulation of polyolefine mixed melting, by segmented copolymer and the granulation of polyolefine material mixed melting, and then by laggard for the mixing of the pellet of above-mentioned granulation process blown film or the expressing technique formation wrapping material of passing through.
Natural antibacterial agent, ethylene-vinyl acetate copolymer and the granulation of polyolefine mixed melting time, amount of polyolefin used is total polyolefinic 0-30%, preferably 0%.
The performance characteristic of this material is, thickness is 10 ~ 150 μm, and OTR oxygen transmission rate is 3000 ~ 15000cm 3/ (m 2.day.atm), carbon dioxide transmission rate is 5000 ~ 35000cm 3/ (m 2.day.atm), water vapor transmission rate (WVTR) is 5 ~ 25g/m 2.day.This material can provide the controlled atmosphere atmosphere of a kind of suitable oxygen and carbonic acid gas for packaging fruits and vegetables, slow releasing natural antibacterial agent suppresses the growth of fruit and vegetable surfaces mushroom simultaneously, thus reaches the effect extending the fruits and vegetables keeping-freshness storage phase.
The difference of the present invention and other patents is: first, and material component is different, is made up of natural antibacterial agent, ethylene-vinyl acetate copolymer, segmented copolymer and polyolefine material.Polyolefine material is body material, and ethylene-vinyl acetate copolymer is for controlling the release of natural antibacterial agent, and segmented copolymer can make polyolefine material have good gas-premeable.Secondly, the active controlled atmosphere fresh-keeping packing material with Co ntrolled release in the present invention is single layer structure, and its OTR oxygen transmission rate is 3000 ~ 15000cm 3/ (m 2.day.atm), carbon dioxide transmission rate is 5000 ~ 35000cm 3/ (m 2.day.atm), water vapor transmission rate (WVTR) is 5 ~ 25g/m 2.day.Adopt this material as the outer packaging of fresh fruit of vegetables, the modified atmosphere packaging atmosphere of comparatively suitable humidity (RH70 ~ 98%), oxygen and carbonic acid gas, the breathing of suppression fruits and vegetables and transpiration can be provided for fruits and vegetables.In addition, suppress growing of fruit and vegetable surfaces mushroom by slow releasing natural antibacterial agent and breed, realizing the object extending fresh fruit of vegetables freshness date.
The active controlled atmosphere fresh-keeping packing material with Co ntrolled release mentioned by the present invention, can be used for the long-acting fresh-keeping of the fruits and vegetables such as strawberry, granulated sugar tangerine, lotus rhizome, cherry tomato, green pepper, concrete effect can see embodiment 1 ~ 4.
Embodiment
Below in conjunction with embodiment, the present invention will be further described, but the present invention is not limited to following examples.
Embodiment 1:
By the Low Density Polyethylene masterbatch of the styrene-butadiene rubber(SBR) of 3wt% thymol, 20wt%, the ethylene-vinyl acetate copolymer of 15wt% and 62wt%, carry out the blended granulation of step melting, the wrapping material formed by blown film or film extrusion technique.With strawberry and the granulated sugar tangerine of this material fresh-keeping, healthy fruit and the Weight loss data of the carbon dioxide and oxygen concentration in freshness date in its packing bag, granulated sugar tangerine and strawberry see the following form respectively.Under the temperature condition of 1 ~ 10 DEG C, the keeping-freshness storage phase of granulated sugar tangerine and strawberry can obviously be extended, and fresh-keeping effect is obvious.
Fruit CO 2Concentration O 2Concentration Healthy fruit Weightless The keeping-freshness storage phase
Granulated sugar tangerine 1～3％ 5～12％ ≥95％ ≤5％ 50 ~ 90 days
Strawberry 1％～6％ 3～11％ ≥80％ ≤5％ 18 ~ 35 days
Embodiment 2:
By the linear low density polyethylene masterbatch of the ethylene-vinyl acetate copolymer of 1wt% thymol, 3wt% menthol, 20wt%, the styrene-butadiene block copolymer of 25wt%, the Low Density Polyethylene of 40wt% and 11wt%, carry out the blended granulation of step melting, the wrapping material formed by blown film or film extrusion technique.With lotus rhizome and the strawberry of this material fresh-keeping, the carbon dioxide and oxygen concentration in freshness date in its packing bag, the healthy fruit of fruit and Weight loss data see the following form respectively.Under the temperature condition of 18 ~ 20 DEG C, the keeping-freshness storage phase of lotus rhizome and strawberry can obviously be extended, and fresh-keeping effect is obvious.
Fruits and vegetables CO 2Concentration O 2Concentration Healthy fruit Weightless The keeping-freshness storage phase
Lotus rhizome sheet 2～6％ 8～14％ ≥90％ ≤5％ 6 ~ 14 days
Strawberry 2％～7％ 3～15％ ≥80％ ≤5％ 8 ~ 18 days
Embodiment 3:
By the Low Density Polyethylene masterbatch of the styrene-ethylene-butadiene segmented copolymer of 5wt% menthol, 15wt%, the ethylene-vinyl acetate copolymer of 20wt% and 60wt%, carry out the blended granulation of step melting, the wrapping material formed by blown film or film extrusion technique.With strawberry and the granulated sugar tangerine of this material fresh-keeping, the carbon dioxide and oxygen concentration in freshness date in its packing bag, the healthy fruit of granulated sugar tangerine and Weight loss data see the following form respectively.Under the temperature condition of 8 ~ 10 DEG C, the keeping-freshness storage phase of granulated sugar tangerine and strawberry can obviously be extended, and fresh-keeping effect is obvious.
Fruit CO 2Concentration O 2Concentration Healthy fruit Weightless The keeping-freshness storage phase
Granulated sugar tangerine 2～5％ 3～11％ ≥95％ ≤5％ 35 ~ 70 days
Strawberry 3％～9％ 2～10％ ≥80％ ≤5％ 10 ~ 25 days
Embodiment 4:
By the ethylene-vinyl acetate copolymer of 2wt% thymol, 1wt% menthol, 20wt% styrene-butadiene block copolymer, 15wt% and the Low Density Polyethylene masterbatch of 62wt%, carry out the blended granulation of step melting, the wrapping material formed by blown film or film extrusion technique.With strawberry and the granulated sugar tangerine of this material fresh-keeping, the carbon dioxide and oxygen concentration in freshness date in its packing bag, the healthy fruit of granulated sugar tangerine and Weight loss data see the following form respectively.Under the temperature condition of 6 ~ 10 DEG C, the keeping-freshness storage phase of green pepper can obviously be extended, and fresh-keeping effect is obvious.
Fruit CO 2Concentration O 2Concentration Decayed fruit rate Weightless The keeping-freshness storage phase
Green pepper 1％～3％ 5～15％ ≤5％ ≤5％ 20 ~ 45 days

Claims (7)

1. one kind has the active controlled atmosphere fresh-keeping packing material of Co ntrolled release, it is characterized in that: the main component of material is that quality is divided into the ethylene-vinyl acetate copolymer of the natural antibacterial agent of 0.5 ~ 10wt%, 5 ~ 30wt%, the segmented copolymer of 1 ~ 45wt% and is not less than the polyolefine material of 40wt%, and natural antibacterial agent is one or both mixture of thymol and menthol.
2., according to a kind of active controlled atmosphere fresh-keeping packing material with Co ntrolled release according to claim 1, it is characterized in that: segmented copolymer is one or more in styrene-ethylene block copolymer, styrene-butadiene block copolymer, styrene-butadiene rubber(SBR), styrene-ethylene-butadiene segmented copolymer and derivative thereof.
3., according to a kind of active controlled atmosphere fresh-keeping packing material with Co ntrolled release according to claim 1, it is characterized in that: polyolefine is one or more in the materials such as PE, LDPE, LLDPE or CPP.
4. according to a kind of active controlled atmosphere fresh-keeping packing material with Co ntrolled release according to claim 1, it is characterized in that: polyolefine is LDPE, LDPE and LLDPE combination or LDPE and CPP combination.
5., according to a kind of active controlled atmosphere fresh-keeping packing material with Co ntrolled release according to claim 1, it is characterized in that: thickness is 10 ~ 150 μm, OTR oxygen transmission rate is 3000 ~ 15000cm 3/ (m 2.day.atm), carbon dioxide transmission rate is 5000 ~ 35000cm 3/ (m 2.day.atm), water vapor transmission rate (WVTR) is 5 ~ 25g/m 2.day.
6. a kind of preparation method with the active controlled atmosphere fresh-keeping packing material of Co ntrolled release according to claim 1, it is characterized in that, first respectively by natural antibacterial agent, ethylene-vinyl acetate copolymer and the granulation of polyolefine mixed melting, by segmented copolymer and the granulation of polyolefine material mixed melting, and then by laggard for the mixing of the pellet of above-mentioned granulation process blown film or the expressing technique formation wrapping material of passing through.
7. in accordance with the method for claim 6, it is characterized in that, natural antibacterial agent, ethylene-vinyl acetate copolymer and the granulation of polyolefine mixed melting time, amount of polyolefin used is total polyolefinic 0-30%.
CN201510890282.1A 2015-12-07 2015-12-07 Controlled release active gas adjustment fresh-keeping packaging material and preparation method thereof Pending CN105348614A (en)

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Cited By (7)

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CN106987105A (en) * 2017-03-03 2017-07-28 浙江省农业科学院 A kind of degradable antibacterial food packaging material and preparation method thereof
CN107286562A (en) * 2017-07-03 2017-10-24 西藏加速工场孵化器有限公司 ABS color master batch
CN109769925A (en) * 2019-01-30 2019-05-21 广东省农业科学院蚕业与农产品加工研究所 A kind of preservation method of mulberry bud dish
CN111034782A (en) * 2019-12-23 2020-04-21 上海直帆冷链技术有限公司 Multifunctional phase change energy storage ice bag and application thereof
CN112225973A (en) * 2020-10-13 2021-01-15 河南工业大学 Insect-proof packaging material and preparation method thereof
WO2022005415A1 (en) * 2020-07-03 2022-01-06 Sözal Ki̇mya Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ Polymer blends for fresh fruit and vegetable packaging applications and packaging films produced from these blends
CN115558150A (en) * 2022-09-08 2023-01-03 广西大学 Preparation method and application of antibacterial fresh-keeping packaging film with porous structure

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106987105A (en) * 2017-03-03 2017-07-28 浙江省农业科学院 A kind of degradable antibacterial food packaging material and preparation method thereof
CN106987105B (en) * 2017-03-03 2019-11-08 浙江省农业科学院 A kind of degradable antibacterial food packaging material and preparation method thereof
CN107286562A (en) * 2017-07-03 2017-10-24 西藏加速工场孵化器有限公司 ABS color master batch
CN109769925A (en) * 2019-01-30 2019-05-21 广东省农业科学院蚕业与农产品加工研究所 A kind of preservation method of mulberry bud dish
CN111034782A (en) * 2019-12-23 2020-04-21 上海直帆冷链技术有限公司 Multifunctional phase change energy storage ice bag and application thereof
WO2022005415A1 (en) * 2020-07-03 2022-01-06 Sözal Ki̇mya Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ Polymer blends for fresh fruit and vegetable packaging applications and packaging films produced from these blends
CN112225973A (en) * 2020-10-13 2021-01-15 河南工业大学 Insect-proof packaging material and preparation method thereof
CN112225973B (en) * 2020-10-13 2023-02-03 河南工业大学 Insect-proof packaging material and preparation method thereof
CN115558150A (en) * 2022-09-08 2023-01-03 广西大学 Preparation method and application of antibacterial fresh-keeping packaging film with porous structure

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