SU740190A1 - Container for fresh agricultural products - Google Patents

Description

AGRICULTURAL PRODUCTS

(54) FRESH PACKAGES

I

The invention relates to containers intended for long-term storage of fruits, vegetables, and other fresh agricultural products using a bag of film material provided with a membrane or filter of a gas-selective polymer material and an air-permeable partition made of activated carbon in a solution of an antiseptic preparation impregnated with a suspension.

There is a method of protecting agricultural products from deterioration during storage by wrapping them in paper soaked in antiseptic 1.

However, this method requires a large amount of manual labor and is ineffective due to leakage of the package.

There is a known method of protecting agricultural products from deterioration by treating products or containers with an antiseptic solution 2. However, this method is inefficient.

There is a method of storing fruit, year and fresh plant raw materials using antimicrobial agents 3.

However, this method does not provide long-term storage of fruits and vegetables. In addition, some of the antimicrobials recommended for use are not allowed by the USSR Ministry of Health for contact with food.

Claims (7)

Famous containers for storing fruits and vegetables and other fresh agricultural products using liners with a membrane of selectively permeable film material, characterized by a high absolute gas permeability and selective gas permeability, which ensures the rapid creation of a modified gas environment. This gaseous medium is characterized by an increased content of carbon dioxide and nitrogen and a reduced oxygen content. Optimal storage conditions are achieved by adjusting the size of the membrane depending on the number of loaded fruits, taking into account their type and grade 4; 5. However, these methods do not protect stored products from microbial spoilage; The creation of a modified atmosphere alone, while observing a certain temperature and humidity, does not completely solve the problem of the long-term preservation of fruits and vegetables. Famous containers for storing fruits and vegetables, including an airtight container made of polyethylene film, equipped with bottom-mounted perforated cylinders, between which walls are placed a gas-selective film membrane, and the inner cylinder is combined with atmosphere 6. The closest to the proposed and achieved result to the proposed is packaging for fresh agricultural products, including a liner, having at least one membrane or filter from a gas selective mother ala and air-permeable partition 7. However, this container does not protect agricultural products from microbial spoilage. The purpose of the invention is to extend the shelf life of products while maintaining their quality. The goal is achieved by the air-permeable partition of the liner impregnated with a suspension of activated carbon in a solution of an antiseptic preparation. The drawing schematically shows the container in axonometry. The container is a body in the form of a metal frame 1 with a wooden wall 2, inside of which is an insert 3 of polyethylene or other polymer film. A window is cut in the liner overlapped with a membrane or a filter from gas-selective material 4 and an air-permeable partition 5. Depending on the stored product, the membrane may be located on different sides of the liner - from above, from below, from the side. The membrane may be several. The air-permeable partition is treated with a suspension of activated carbon in an antiseptic solution. A non-suburb may be located either on one side of the membrane (outside or inside), or on both sides. Suspension of activated carbon can be applied both from the outside or from the inside, and from two sides on the partition by sprinkling, dipping or passing between the rolls. The activated carbon contributes to the absorption of esters of ethylene, aldehyde acids released by the fruits, along with the release of carbon dioxide, which, when stored in bags, removes the lisch to a small extent, which causes partially physiological damage to the fruits. Sorbic acid, calcium sorbate, benzoic acid, sodium benzoic acid, sodium metabisulfite, sodium bisulfite, bisulfite and pp can be used as an antiseptic preparation. For the material of the membrane, various basis fabrics can be used: cotton (batiste, bz) , synthetic (polyamide, lavsanova), fiberglass, as well as reinforced fabrics. For the impregnation or coating of the base fabric, various elastomers based on organosilicon and other rubbers can be used, including polydimethylsiloxane, polydimethylsynylsiloxane, divinylpolydi methylsiloxane, polymethylphenylvinylsiloxane, polymethylvinyl trifluoropropylsiloxane and others. Application to the base fabric for the preparation of a membrane material can be carried out by various methods, including shredding, impregnation on roller mashes. The tare is carried out as follows. Fruits and vegetables are loaded into a hermetic insert placed in a container. Storage can be carried out in unsealed cold rooms, in which containers are placed in several rows in height, at an optimum temperature of -3 ° C, or in cellars, in which the temperature should not be higher than 5-9 ° C and below 1 ° C. The higher the temperature, the membrane size increases by 30-40%. According to the test results, the relative humidity inside the liner is at 95-99%. The composition of the modified gaseous medium for the block of late varieties is as follows: CO g - 3-5%, Og - 4-6%, NS, - about 90%. The shelf life of fruit and vegetable products is increased by 2.5-3 months. Compared with normal storage in refrigerators, waste is reduced by 5-7 times in open boxes, absolute losses. Mass decreases by 8-10 times, while maintaining the nutritional value of food. Tara for fresh agricultural products, comprising an insert having at least one membrane or filter of gas-selective material and an air-permeable partition placed on their sides, characterized in that, in order to extend the shelf life of products while keeping them quality, air-permeable wall of the liner is impregnated with a suspension of activated carbon in a solution of antiseptic preparation. Sources of information taken into account in the examination 1. USSR author's certificate. No. 1Yay974 K1 D 94 R 7/1 L. I Qfi 1 2. USSR author's certificate number 186849, cl. A 23 B 7/14, 1963. 3.Apl to I.V., Silich T.N. The use of antimicrobial agents in the storage of fruit and vegetable raw materials. M., TsNIITEIPishcheprom, 1976. 4.Patent of France No. 2198700, cl. A 23 At 7/00, published. 1974. 5. US patent number 3507667, cl. 99-17 ,, pub. 1970. 6. USSR author's certificate for application No. 2135013 / 30-15, cl. A 01 F 25/14, 1975. 7. USSR author's certificate on 2595341 / 30-13, cl. A 01 f 25/14, 03/24/78 (prototy).