Classifications

• • 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
  • A23B7/144—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of gases, e.g. fumigation; Compositions or apparatus therefor
  • A23B7/152—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of gases, e.g. fumigation; Compositions or apparatus therefor in a controlled atmosphere comprising other gases in addition to CO2, N2, O2 or H2O ; Elimination of such other gases
• • 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
  • A23B7/144—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of gases, e.g. fumigation; Compositions or apparatus therefor
  • A23B7/148—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of gases, e.g. fumigation; Compositions or apparatus therefor in a controlled atmosphere, e.g. partial vacuum, comprising only CO2, N2, O2 or H2O
• • A—HUMAN NECESSITIES
  • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
  • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
  • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
  • A23L3/34—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals
  • A23L3/3409—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor
  • A23L3/3418—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor in a controlled atmosphere, e.g. partial vacuum, comprising only CO2, N2, O2 or H2O
  • A23L3/3427—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor in a controlled atmosphere, e.g. partial vacuum, comprising only CO2, N2, O2 or H2O in which an absorbent is placed or used
• • 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
  • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
  • B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
  • B65D81/26—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators
  • B65D81/263—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators for ventilating the contents
• • 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
  • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
  • B65D85/30—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
  • B65D85/34—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for fruit, e.g. apples, oranges or tomatoes

Definitions

• the present invention relates to a film used for wrapping vegetables and fruits, particularly to a film for wrapping vegetables and fruits which adsorbs an ethylene gas to exert an excellent effect for keeping freshness of vegetables and fruits.
• the concentration of ethylene evolved from vegetables and fruits themselves is increased.
• their ripeness is enhanced and their freshness is rapidly decreased.
• Japanese Patent Publication No. 55-50451/1980 discloses a material for storing vegetables and fruits, keeping their freshness by removing the ethylene gas wherein bromine is adsorbed in carbon having fine pores of a few angstrom diameter.
• the material for keeping the freshness as described in the above specification is placed in a storage house and intended to remove the whole ethylene gas therein. Accordingly, a large quantity of the material for keeping the freshness is required. Moreover, it is difficult to remove ethylene completely. In particular, the ethylene gas which is considerably high in concentration stays on the surface of each of vegetables and fruits. It is extremely difficult to remove this ethylene gas completely. It has been, therefore, extremely difficult to keep freshness of vegetables and fruits for a long period of time. Even When a small amount of vegetables and fruits are stored, there have been problems that the operation requires much works and is complicated, and that the storage cost becomes high, because the material for keeping, the freshness must be placed in a storage house each time.
• a film for keeping freshness of vegetables and fruits which has an ethylene-adsorptive activity.
• Figs. 1 to 5 each show test data about relationship between a period of storage time of vegetables and fruits and an amount of ethylene gas remaining on the surface of the vegetables and fruits.
• a film of the invention serves to wrap vegetables or fruits and keep the freshness thereof longer and comprises (1) 85 to 96 percent by weight of a film-forming material selected from the group consisting of polyethylene, polypropylene, polybutadiene, polyvinyl acetate, polyester and polyamide and
• the powder has been treated with the electromagnetic waves or ozone in advance of blending to improve the capacity of the ethylene gas absorption.
• the above shown capacity of the ethylene gas absorption substantially corresponds to the absorption rate at leaset 0.005 ppm per hour.m2.
• the inorganic material to use in the invention may be produced by cultivating a raw material into fine powder. It may be mixed with a trace amount of a metal oxide and sintered.
• the porous powder essentially has an average particle size of 300 mesh according to Japan Industrial Standard or smaller.
• the lower limit is such that the film could provide the above characterized properties.
• the invention film provides as high a moisture permeability as a conventional film such as a low density polyethylene having 16 to 22 g/m2. 24 hours and eventually has a moisture permeability of 80 to 110 g/m2. 24 hours.
• the film containing the fine-porous material not only has the ethylene-adsorptive activity, but. also is excellent in permeability of a gas such as oxygen, carbon dioxide, nitrogen, ethylene, steam or the like. Consequently, the ethylene gas is discharged outside the film wrapping vegetables and fruits and the inside of the film is maintain at a suitable humidity. Therefore, the effect for keeping freshness of vegetables and fruits is more heicrhten.
• a material for the film of the present invention there can be used polyethylene, polypropylene, polybutadiene, polyvinyl acetate, a polyester, a polyamide or the like.
• a material having chlorine atoms such as polyvinyl chloride or polyvinylidene chloride, or a material containing a plasticizer is preferable not to be used, because of being liable to cause an insufficient ethylene-adsorptive activity.
• the ethylene gas evolved on the surfaces of vegetables and fruits can be very effectively removed and thus freshness of vegetables and fruits can be maintained, because vegetable and fruits are wrapped in such a manner that the film is in direct contact with the surfaces thereof.
• the film of the present invention is economical, because it is enough only to wrap vegetables and fruits with the film and a special storage house is not required.
• the film of the present invention is suitable for the storage of a small amount of vegetables and fruits in the home or. the like.
• Ohya stone was found to powder having a size of at least 200 mesh, and incorporated in polyethylene in an amount of 5 % by weight. Then, a 40 ⁇ -thick film was formed therefrom.
• one of the remaining two sets was wrapped with the commercial polyethylene film and sealed, and the other was not wrapped. Both were stored in a storage house at a temperature of 15o to 25oC.
• a powder of cristobalite there were added a small amount of quartz, TiO 2 , Al 2 O 3 , Fe 2 O 3 , CaO and Na 2 O, and the clay was prepared by mixing them.
• the clay was granulated, preliminarily dried at a temperature of about 100°C and then sintered at a temperature of 700oC.
• the granules thus sintered were treated with oxygen under irradiation of electro-magnetic waves in the range of 1849 to 2537 angstroms.
• the material thus treated was thereafter ground to powder having a size of at largest 200 mesh and incorporated in polyethylene in an amount of 5% by weight. Then, a 40 ⁇ -thick film was formed therefrom.
• the chemical composition (% by weight) of the material obtained by the oxygen treatment was as follows:
• the spinages immediately after the harvest were wrapped with this film and sealed in a similar manner as in Example 1, and stored in a storage house at a temperature of 15° to 25oC.
• the spinages wrapped with the commercial polyethylene film and not wrapped were stored in a storage house at a temperature of 15° to 25°C.
• the concentrations of ethylene existing on the surfaces of the spinages were measured as is the case with Example 1. The results thereof were as shown in FIG. 2.
• a zeolite was ground to powder, having a size of at largest 200 mesh and incorporated in polybutadiene in an amount of 10% by weight. Then, a 40 ⁇ -thick film was formed therefrom.
• one of the remaining two sets was wrapped with the polybutadiene film supplied by Japan Synthetic Rubber Co., Ltd. and sealed, and the other was not wrapped. Both were stored in a storage house at a temperature of 15o to 25°C.
• Zeolite treated with oxygen of Example 4 was incorporated in polypropylene in an amount of 7% by weight, and then a 40 ⁇ -thick film was formed therefrom.
• one of the remaining two sets was wrapped with the commercial polypropylene film for wrappinc snd sealed, and the other was not wrapped. Both were stored in a storage house at a temperature of 15o to 25oC.
• the inside of the film wrapping the broccolis was maintained at a suitable humidity.
• the inside of the wrapping film became stuffy, and when not wrapped, the broccolis began to wither.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Food Science & Technology (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Polymers & Plastics (AREA)
• Zoology (AREA)
• Mechanical Engineering (AREA)
• Wood Science & Technology (AREA)
• Nutrition Science (AREA)
• Health & Medical Sciences (AREA)
• Storage Of Fruits Or Vegetables (AREA)
• Packages (AREA)
• Wrappers (AREA)
• Compositions Of Macromolecular Compounds (AREA)

Priority Applications (3)

Applications Claiming Priority (1)

Publications (1)

Family

ID=13902806

Family Applications (1)

Country Status (3)

Cited By (5)

Families Citing this family (4)

Citations (1)

Family Cites Families (3)

• 1987
  • 1987-08-06 DE DE19873790982 patent/DE3790982T1/de not_active Withdrawn
  • 1987-08-06 WO PCT/JP1987/000591 patent/WO1989000960A1/en active Application Filing
  • 1987-08-06 GB GB8906555A patent/GB2219185B/en not_active Expired - Fee Related

Patent Citations (1)

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