CN106283838A - A kind of 1 methyl cyclopropene tin foil and preparation method thereof - Google Patents
A kind of 1 methyl cyclopropene tin foil and preparation method thereof Download PDFInfo
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- CN106283838A CN106283838A CN201610637567.9A CN201610637567A CN106283838A CN 106283838 A CN106283838 A CN 106283838A CN 201610637567 A CN201610637567 A CN 201610637567A CN 106283838 A CN106283838 A CN 106283838A
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- methyl cyclopropene
- tin foil
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- 239000005969 1-Methyl-cyclopropene Substances 0.000 title claims abstract description 47
- SHDPRTQPPWIEJG-UHFFFAOYSA-N 1-methylcyclopropene Chemical compound CC1=CC1 SHDPRTQPPWIEJG-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title claims abstract description 31
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 title abstract description 10
- 239000011248 coating agent Substances 0.000 claims abstract description 32
- 238000000576 coating method Methods 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 10
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 10
- 241001330002 Bambuseae Species 0.000 claims abstract description 10
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 10
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 10
- 239000011425 bamboo Substances 0.000 claims abstract description 10
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 239000006096 absorbing agent Substances 0.000 claims abstract description 8
- 239000002270 dispersing agent Substances 0.000 claims abstract description 7
- 239000011121 hardwood Substances 0.000 claims abstract description 3
- -1 1-methyl cyclopropene tin Chemical compound 0.000 claims description 19
- 239000011888 foil Substances 0.000 claims description 18
- 229920000856 Amylose Polymers 0.000 claims description 14
- 238000011002 quantification Methods 0.000 claims description 13
- 229920002472 Starch Polymers 0.000 claims description 10
- 239000013078 crystal Substances 0.000 claims description 10
- 235000019698 starch Nutrition 0.000 claims description 10
- 239000008107 starch Substances 0.000 claims description 10
- 238000006467 substitution reaction Methods 0.000 claims description 10
- 229920001131 Pulp (paper) Polymers 0.000 claims description 7
- 239000002023 wood Substances 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 6
- 239000004382 Amylase Substances 0.000 claims description 5
- 230000033228 biological regulation Effects 0.000 claims description 5
- 230000015556 catabolic process Effects 0.000 claims description 5
- 238000006731 degradation reaction Methods 0.000 claims description 5
- 238000006116 polymerization reaction Methods 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 150000001336 alkenes Chemical class 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000010009 beating Methods 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 239000012467 final product Substances 0.000 claims description 2
- 150000001805 chlorine compounds Chemical group 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 238000003860 storage Methods 0.000 abstract description 10
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 235000013399 edible fruits Nutrition 0.000 description 28
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 10
- 239000005977 Ethylene Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 235000013311 vegetables Nutrition 0.000 description 7
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical group [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 241000196324 Embryophyta Species 0.000 description 5
- 238000004321 preservation Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 108091054761 ethylene receptor family Proteins 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 244000144730 Amygdalus persica Species 0.000 description 3
- 235000006040 Prunus persica var persica Nutrition 0.000 description 3
- 235000019270 ammonium chloride Nutrition 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 235000012907 honey Nutrition 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000001291 vacuum drying Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 239000002981 blocking agent Substances 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 125000004980 cyclopropylene group Chemical group 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000001934 delay Effects 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 229920001353 Dextrin Polymers 0.000 description 1
- 239000004375 Dextrin Substances 0.000 description 1
- 101100412856 Mus musculus Rhod gene Proteins 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 150000003841 chloride salts Chemical group 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- OOXWYYGXTJLWHA-UHFFFAOYSA-N cyclopropene Chemical compound C1C=C1 OOXWYYGXTJLWHA-UHFFFAOYSA-N 0.000 description 1
- 230000034994 death Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 235000019425 dextrin Nutrition 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000021022 fresh fruits Nutrition 0.000 description 1
- 235000012055 fruits and vegetables Nutrition 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 201000004792 malaria Diseases 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 108020003175 receptors Proteins 0.000 description 1
- 102000005962 receptors Human genes 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
- D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
- D21H15/10—Composite fibres
-
- 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
- A23B7/159—Apparatus for preserving using solids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B33/00—Preparation of derivatives of amylose
- C08B33/04—Ethers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/08—Dispersing agents for fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/10—Packing paper
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
Abstract
The invention discloses a kind of 1 methyl cyclopropene tin foil, this tin foil is made up of original paper layer and the fresh-keeping layer being coated on its surface, and original paper layer is mainly mixed by bamboo pulp and hardwood pulp copies system；Fresh-keeping layer be mainly composed of 1 methyl cyclopropene inclusion complex, Polyethylene Glycol PUR, water absorbing agent, dispersant and slow releasing agent.The invention also discloses the preparation method of 1 methyl cyclopropene tin foil, step includes the preparation of 1 methyl cyclopropene inclusion complex, the preparation of coating, the preparation of original paper layer, is coated with and is dried.The 1 methyl cyclopropene tin foil good refreshing effect of the present invention, Environmental compatibility is good, easy to use, effect stability, all has good applicability in storage and transportation.
Description
Technical field
The invention belongs to speciality paper field, especially relate to a kind of 1-methyl cyclopropene tin foil and preparation method thereof.
Background technology
Along with the raising of quality of life, people are to season of fruit and vegerable and newly rarely had higher consumption demand.China's fruit
Cultivated area and fruits output the most surely occupy first place in the world, but fruit and vegetable food moisture content is high, easily rots, and present stage, China was new
Fresh fruit vegetables due to gather improper, commercialized treatment after adopting is backward in technique, storing condition is improper and saving and processing scarce capacity etc. is former
Cause, the rotten proportion of goods damageds caused, fruit has reached 30%, and vegetable reaches 30-40%, and the proportion of goods damageds of developed country are then less than 7%.
Therefore, take effective preservation technique and material, the vital movement of suppression fruit and vegerable, reduce its metabolism, extend its storage
The Tibetan time, to keep good commercial quality, just seem particularly significant.
Plant or plant local can be caused (to include, example it is known that ethylene is combined by some receptor in plant
As, flowers, leaf, fruit) and the premature death of vegetable.Ethylene also promotes leaf to turn yellow and growth Rhizoma Zingiberis Recens contracting, and promotes precocity
Fruit, flowers and leaves.Because these problems that ethylene is caused, current substantial amounts of research is paid close attention to and is prevented or reduce
The method of the adverse effect of ethylene on plants.
In recent years, researcher is found that 1-methyl cyclopropene (1-MCP) is very effective ethylene receptor inhibitor.Can
By the way of being preferentially combined with ethylene receptor, the irreversible ethylene receptor that acts on, stop endogenous ethylene and exogenous ethylene with
The combination of ethylene receptor, thus suppress that it is induced with the garden crop after-ripening such as flowers, vegetables and fruits or a series of physiology of aging
Biochemical reaction.It has that safety non-toxic is harmful, use cost is low, consumption is few, noresidue, easy to use, long fresh-keeping period and suppression second
The features such as alkene action effect is obvious.But, a subject matter of this compound is the gas that they are the most unstable
, there is the danger of blast upon compression in body.In order to the reactivity making cyclopropylene is stable, thus storage is provided, transports and to plant
In use or carry the convenience of these active compounds and the method for safety, solve the problems referred to above a kind of method be by ring third
Alkene is attached in molecular encapsulation agent complex.
Produce 1-MCP commodity the earliest is Rhom and Hass, and trade name Ethyblock mainly uses and uses ring
Dextrin adsorbs into product.Taiwan Li Tong company uses unique micro-embedded technology to produce 1-methyl cyclopropene, and trade name is peace
Happiness training.The manufacturer of current domestic report has Lanzhou Jia Cheng biotech company (tablet) and Shandong nutrient source food science and technology to have
Limit company (1-MCP solution).
At present, tablet 1-MCP both domestic and external and liquid 1-MCP have preferable fresh-keeping effect, but there are still use not
Conveniently, it is difficult to the problems such as operation and instability.1-MCP tablet needs airtight condition and airtight stifling 6-during practicing
12 hours, operation complexity, it is difficult to extensive quickly storage；Liquid 1-MCP is poor at normal temperature condition stability inferior, needs to store at low temperature
Hide the stability of guarantee 1-MCP.
Summary of the invention
In order to overcome the deficiencies in the prior art, the present invention provides a kind of preservation and freshness being applied to fruit and vegerable, easy to use, effect
Fruit is stable and the 1-methyl cyclopropene tin foil being more easy to popularization and application and preparation method thereof.
The technical solution adopted for the present invention to solve the technical problems is: a kind of 1-methyl cyclopropene tin foil, including former
Ply of paper and the fresh-keeping layer being coated on original paper layer surface；Described original paper layer is mixed by bamboo pulp and hardwood pulp copies system, determining of original paper layer
Amount is 120-150g/m2；Described fresh-keeping layer includes 1-methyl cyclopropene inclusion complex, Polyethylene Glycol PUR, water absorbing agent, dispersant
And slow releasing agent, the quantification of 15-40g/m of fresh-keeping layer2。
In 1-methyl cyclopropene tin foil joins fruit or the carton of vegetable or container, fruit and vegerable breathe the steam produced
This tin foil coating can be induced with carbon dioxide in container, slowly control release 1-methyl cyclopropene (1-MCP), and 1-MCP is
Ethylene blocking agent, can suppress fruit and vegerable to produce ethylene, delays fruit and vegerable ripe, and then extends shelf life and the storage of packaged fruit and vegerable
Phase.But before not loading fruit and vegerable, the water deficient in air to cause the release of 1-MCP, this tin foil fresh-keeping function
Will not be activated.
The invention also discloses the preparation method of a kind of above-mentioned 1-methyl cyclopropene tin foil, comprise the following steps:
1) preparation of 1-methyl cyclopropene inclusion complex: 1-methylcyclopropene gas is passed through the modified amylose of 5-15%
Solution, regulation pH=4.5-5.0 and temperature 5-10 DEG C, separate out the starch crystal of parcel 1-methyl cyclopropene, control 1-methyl ring
1-methyl cyclopropene mass percent in propylene inclusion complex is 0.10-0.16%；
2) preparation of coating: weigh step 1) in obtained by 100 parts of starch crystal, and weigh water absorbing agent 8-15 part, point
Powder 5-10 part, slow releasing agent 5-10 part, add in Polyethylene Glycol PUR, through 500-1000r/min dispersed with stirring, standby；
3) preparation of original paper layer: by the raw material as main component with bamboo pulp and leaf wood through size degradation, wherein bamboo pulp and broad-leaved
The mass ratio of wood is 5-10:3, mixes defibrination, and screening is made paper pulp, made quantification of 120-150g/m2Original paper layer；
4) coating: claim step 2) in obtained by coating be coated on step 3 in papermaking coating mode) in the original paper layer of gained
Surface, forms quantification of 15-40g/m2Fresh-keeping layer；
5) be dried: by step 4) in obtained by coating paper the temperature of 40-60 DEG C, be dried 2-5 hour, to obtain final product.
Further, described step 1) in the preparation method of modified amylose be: first with a-amylase, straight chain is formed sediment
Powder is degraded, and the control degree of polymerization is 100-200, then through 2,3-epoxypropyltrimethylchloride chloride substitution reaction, controlling substitution value is
0.1-0.5。
Further, described step 2) in the mean molecule quantity of Polyethylene Glycol PUR be 4000.
Further, described step 3) in making beating time freedom control at 275-350ml.
Further, described step 3) in paper pulp three-layer network paper machine copied make shape, through machinery press with large-roll-diameter, baking
Dry, supercalendering, manufactures paper with pulp into original paper layer.
The problem existed in the application for 1-MCP compound, the present invention is at the Research foundation of 1-MCP molecule technique for packing
On, to develop novel 1-MCP tin foil further, be applied to the preservation and freshness of fruit and vegerable, it is easy to use, good refreshing effect,
Fresh-keeping effect is stable, and Environmental compatibility is good, all has good applicability in storage and transportation, is more easy to popularization and application.
The invention has the beneficial effects as follows: (1) have employed the wet-formed of tradition papermaking and the production technology of coating, has work
The features such as process flow product quality simple, easily controllable, production process environmental protection, and produced can the material of accurate each raw material
Ratio, is conducive to controlling the quality of product；(2) cyclopropene preservative paper uses simpler, convenient, easy large-scale promotion application；(3) originally
Invention utilizes a small amount of water extracted from malaria, or the water of release breathed certainly by fruit, triggers the slow of 1-MCP and discharges,
Make fresh-keeping effect more superior；(4) present invention will allow user directly in the container of shipment rather than in huge process
Fruit or vegetable are processed by container, case or room with cyclopropylene gas.
Detailed description of the invention
In order to make those skilled in the art be better understood from the present invention program, below by the technology in inventive embodiments
Scheme carries out clear, complete description, it is clear that described embodiment be only the present invention a part of embodiment rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, all should belong to the scope of protection of the invention.
Embodiment 1
Step one: degraded through a-amylase by amylose, controls the degree of polymerization 100, then through 2, and 3-glycidyl front three
Ammonium chloride substitution reaction, controls substitution value 0.1, obtains modified amylose.
Step 2, the preparation of 1-methyl cyclopropene inclusion complex: 1-MCP gas is passed through 8% change obtained in step one
Property amylose solution in, regulation pH=4 and temperature 5 DEG C, separate out the starch crystal of parcel 1-MCP, control the 1-in inclusion complex
MCP mass percent is 0.10%.
Step 3, the preparation of coating: 100 parts of starch crystal obtained by weighing in step 2, and weigh water absorbing agent 8 parts,
Dispersant 5 parts, slow releasing agent 5 parts, add in the Polyethylene Glycol PUR that mean molecule quantity is 4000, through 800r/min stirring point
Dissipate, put in coating storage drum standby.
Step 4, the preparation of original paper layer: bamboo pulp with mass ratio as 5:3 and leaf wood for primary raw material through size degradation, mixing
Paper pulp is made in defibrination, screening, and wherein Canadian freeness controls at 350ml, copies with three-layer network paper machine and makes shape, big through machinery
The squeezing of roller footpath, drying, supercalendering, make quantification of 120g/m2Original paper layer.
Step 5, coating: claim the coating obtained by step 3 to be coated on the body paper of step 4 gained in papermaking coating mode
Layer surface, forms quantification of 15g/m2Fresh-keeping layer.
Step 6, is dried: by the coating paper obtained by step 5 through low-temperature vacuum drying, at temperature 40 DEG C, when being dried
Between be 2 hours, get product 1-methyl cyclopropene tin foil (a).
Embodiment 2
Step one: degraded through a-amylase by amylose, controls the degree of polymerization 150, then through 2, and 3-glycidyl front three
Ammonium chloride substitution reaction, controls substitution value 0.3, obtains modified amylose.
Step 2, the preparation of 1-methyl cyclopropene inclusion complex: 1-MCP gas is passed through 10% change obtained in step one
Property amylose solution in, regulation pH=4.5 and temperature 10 DEG C, separate out the starch crystal of parcel 1-MCP, control in inclusion complex
1-MCP mass percent is 0.12%.
Step 3, the preparation of coating: 100 parts of starch crystal obtained by weighing in step 2, and weigh water absorbing agent 10 parts,
Dispersant 8 parts, slow releasing agent 8 parts, add in the Polyethylene Glycol PUR that mean molecule quantity is 4000, through 900r/min stirring point
Dissipate, put in coating storage drum standby.
Step 4, the preparation of original paper layer: bamboo pulp with mass ratio as 8:3 and leaf wood for primary raw material through size degradation, mixing
Paper pulp is made in defibrination, screening, and wherein Canadian freeness controls at 320ml, copies with three-layer network paper machine and makes shape, big through machinery
The squeezing of roller footpath, drying, supercalendering, make quantification of 130g/m2Original paper layer.
Step 5, coating: claim the coating obtained by step 3 to be coated on the body paper of step 4 gained in papermaking coating mode
Layer surface, forms quantification of 25g/m2Fresh-keeping layer.
Step 6, is dried: by the coating paper obtained by step 5 through low-temperature vacuum drying, under temperature 50 C, when being dried
Between be 3 hours, get product 1-methyl cyclopropene tin foil (b).
Embodiment 3
Step one: degraded through a-amylase by amylose, controls the degree of polymerization 200, then through 2, and 3-glycidyl front three
Ammonium chloride substitution reaction, controls substitution value 0.5, obtains modified amylose.
Step 2, the preparation of 1-methyl cyclopropene inclusion complex: 1-MCP gas is passed through 12% change obtained in step one
Property amylose solution in, regulation pH=5.0 and temperature 10 DEG C, separate out the starch crystal of parcel 1-MCP, control in inclusion complex
1-MCP mass percent is 0.16%.
Step 3, the preparation of coating: 100 parts of starch crystal obtained by weighing in step 2, and weigh water absorbing agent 15 parts,
Dispersant 10 parts, slow releasing agent 10 parts, add in the Polyethylene Glycol PUR that mean molecule quantity is 4000, through 700r/min stirring point
Dissipate, put in coating storage drum standby.
Step 4, the preparation of original paper layer: bamboo pulp with mass ratio as 9:3 and leaf wood for primary raw material through size degradation, mixing
Paper pulp is made in defibrination, screening, and wherein Canadian freeness controls at 275ml, copies with three-layer network paper machine and makes shape, big through machinery
The squeezing of roller footpath, drying, supercalendering, make quantification of 150g/m2Original paper layer.
Step 5, coating: claim the coating obtained by step 3 to be coated on the body paper of step 4 gained in papermaking coating mode
Layer surface, forms quantification of 40g/m2Fresh-keeping layer.
Step 6, is dried: by the coating paper obtained by step 5 through low-temperature vacuum drying, under temperature 60 C, when being dried
Between be 5 hours, get product 1-methyl cyclopropene tin foil (c).
Experiment draws, with blank group for comparison, when 1-methyl cyclopropene tin foil join fruit or the carton of vegetable or
In container, fruit and vegerable breathe the steam produced and carbon dioxide can induce this tin foil coating and slowly control release 1-in container
MCP, and 1-MCP is ethylene blocking agent, and fruit and vegerable can be suppressed to produce ethylene, delays fruit and vegerable ripe, and then extend packaged fruit and vegerable
Shelf life and the phase of storage.And before not loading fruit and vegerable, the water deficient in air is to cause the release of 1-MCP, this is fresh-keeping
Paper fresh-keeping function will not be activated.
The detection embodiment of the present invention 1, embodiment 2 and the 1-methyl cyclopropene tin foil built-in process water of embodiment 3 gained
The preservation of fruit.
The same day adopting back medium well Fenghua honey peach and puts into carton, lower 7 days of room temperature is according to fruit color and luster, hardness, weightlessness
Fresh-keeping effect is evaluated, the most as shown in table 1 etc. the evaluation index of commodity rate.
Table 1
Result shows: with the embodiment of the present invention 1, embodiment 2 and Fenghua honey peach of the built-in process of tin foil of embodiment 3
Commodity rate be respectively 80%, 85% and 92%.The edible rate of Fenghua honey peach of blank group is only 50%.Result of the test shows
The 1-methyl cyclopropene tin foil of the present invention has good preservation to fruit.
Above-mentioned detailed description of the invention is used for illustrating the present invention rather than limiting the invention, the present invention's
In spirit and scope of the claims, any modifications and changes that the present invention is made, both fall within the protection model of the present invention
Enclose.
Claims (6)
1. a 1-methyl cyclopropene tin foil, it is characterised in that: include original paper layer and be coated on the fresh-keeping layer on original paper layer surface；
Described original paper layer is mixed by bamboo pulp and hardwood pulp copies system, the quantification of 120-150g/m of original paper layer2；Described fresh-keeping layer includes 1-
Methyl cyclopropene inclusion complex, Polyethylene Glycol PUR, water absorbing agent, dispersant and slow releasing agent, the quantification of 15-40g/ of fresh-keeping layer
m2。
2. the preparation method of a 1-methyl cyclopropene tin foil as claimed in claim 1, it is characterised in that include following step
Rapid:
1) preparation of 1-methyl cyclopropene inclusion complex: the modified amylose that 1-methylcyclopropene gas is passed through 5-15% is molten
Liquid, regulation pH=4.5-5.0 and temperature 5-10 DEG C, separate out the starch crystal of parcel 1-methyl cyclopropene, control 1-methyl ring third
1-methyl cyclopropene mass percent in alkene inclusion complex is 0.10-0.16%；
2) preparation of coating: weigh step 1) in obtained by 100 parts of starch crystal, and weigh water absorbing agent 8-15 part, dispersant
5-10 part, slow releasing agent 5-10 part, add in Polyethylene Glycol PUR, through 500-1000r/min dispersed with stirring, standby；
3) preparation of original paper layer: by the raw material as main component with bamboo pulp and leaf wood through size degradation, wherein bamboo pulp and leaf wood
Mass ratio is 5-10:3, mixes defibrination, and screening is made paper pulp, made quantification of 120-150g/m2Original paper layer；
4) coating: claim step 2) in obtained by coating be coated on step 3 in papermaking coating mode) in the original paper layer table of gained
Face, forms quantification of 15-40g/m2Fresh-keeping layer；
5) be dried: by step 4) in obtained by coating paper the temperature of 40-60 DEG C, be dried 2-5 hour, to obtain final product.
The preparation method of 1-methyl cyclopropene tin foil the most according to claim 2, it is characterised in that described step 1) in
The preparation method of modified amylose is: being degraded by amylose first with a-amylase, the control degree of polymerization is 100-200, then
Through 2,3-epoxypropyltrimethylchloride chloride substitution reaction, control substitution value is 0.1-0.5.
The preparation method of 1-methyl cyclopropene tin foil the most according to claim 2, it is characterised in that: described step 2) in
The mean molecule quantity of Polyethylene Glycol PUR is 4000.
The preparation method of 1-methyl cyclopropene tin foil the most according to claim 2, it is characterised in that: described step 3) in
Freedom during making beating controls at 275-350ml.
The preparation method of 1-methyl cyclopropene tin foil the most according to claim 2, it is characterised in that: described step 3) in
Paper pulp three-layer network paper machine is copied and makes shape, through machinery press with large-roll-diameter, drying, supercalendering, manufacture paper with pulp into original paper layer.
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| CN112878105A (en) * | 2021-01-26 | 2021-06-01 | 新疆农业大学 | Slow-release 1-MCP preservative paper for preservation of Xinjiang small white apricots and application thereof |
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