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Thin membrane gas-adjusting storage fresh-keeping method

A fresh-keeping method and storage and fresh-keeping technology, applied in the direction of freezing/refrigerating fruits/vegetables, etc., can solve the problems of Laiyang pears that cannot be transported over long distances and long-term storage, and achieve excellent air conditioning effects, convenient use, and improved membrane permeability. Effect

Inactive Publication Date: 2008-04-09
周志才
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art, and provide the MA storage, transportation and fresh-keeping method of Laiyang pear, which mainly solves the problem that Laiyang pear cannot be transported and stored for a long time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1, harvest 9-10 mature Laiyang pears in batches, and pack Laiyang pears into cartons lined with MA-modified atmosphere storage fresh-keeping bags. The specifications of the cartons are 38cm long, 23cm wide, and 24cm high. Design the specification of MA modified atmosphere storage fresh-keeping bag according to the following formula:

[0024] W. Rco 2 =Pg.A(P'co 2 -Pco 2 ) / D

[0025] W.Ro 2 =Pg.A(Po 2 -P'o 2 ) / D

[0026] W is the weight of Laiyang pear; Rco 2 and Ro 2 is the respiratory intensity of Laiyang pear; Pg is the air permeability coefficient of the finished resin film; A is the packaging area; P’co 2 and P'o 2 is the partial pressure of the gas in the bag; Pco 2 and Po 2 is the partial pressure of the gas outside the bag; D is the thickness of the finished resin film.

[0027] The length, width and thickness of the designed MA modified atmosphere storage fresh-keeping bag are 60cm×55cm×0.07mm, respectively, and the storage capacity is 10...

Embodiment 2

[0028] Embodiment 2 is the same as Embodiment 1, except that the MA modified atmosphere storage fresh-keeping bag is designed according to the regression equation, and its specification is 86 cm in length, 65 cm in width, and 0.004 cm in thickness. The packaged and pre-cooled Laiyang pears should be packed in MA packaging for long-distance transportation. The mouth of the bag should be tightly fastened before transportation, and then enter the sales channel with MA packaging and enter consumers' homes. From packaging to the entire process of entering the transportation sales channel and entering the final consumer's home, Laiyang pears have been kept in an atmosphere-controlled and fresh-keeping environment, and the CO in the bag 2 3-8%, O 2 6-10%. This method is suitable for the Laiyang pears that are packaged and precooled for direct long-distance transportation and sold after harvesting. The shelf life of Laiyang pears is 7-15 days, and the good fruit rate is 95-98%.

Embodiment 3

[0029] Embodiment 3, the Laiyang pear of timely harvesting in batches is packed into the standard plastic foam box that is lined with nano-MA modified atmosphere storage fresh-keeping bag, and the specification of foam box is long 48cm, wide 32cm, high 26cm. Design the specifications of nano-MA modified atmosphere storage bags according to the following formula:

[0030] W. Rco 2 =Pg.A(P'co 2 -Pco 2 ) / D

[0031] W.Ro 2 =Pg.A(Po 2 -P'o 2 ) / D

[0032] W is the weight of Laiyang pear; Rco 2 and Ro 2 is the respiratory intensity of Laiyang pear; Pg is the air permeability coefficient of the finished resin film; A is the packaging area; P’co 2 and P'o 2 is the partial pressure of the gas in the bag; Pco 2 and Po 2 is the partial pressure of the gas outside the bag; D is the thickness of the finished resin film.

[0033] The length, width and thickness of the designed nano-MA modified atmosphere storage bag are 73cm×70cm×0.09mm, and the storage capacity is 15Kg. From b...

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Abstract

The invention discloses a MA storage and transportation fresh keeping method for the Laiyang pear, and includes the following technique steps: A. packing and pre-cooling, which is to load the properly harvested fruit in a packing case coated with a MA storage fresh keeping bag, then convey the packing case to a storeroom, and then pre-cool the pears in a cold store of 0 plus or minus 1 DEG C; B. transporting or storage transporting, which is to transport the pre-cooled pears in the MA package, and tie close the package opening before the pears are transported, and start long-distance transportation with the MA package after storage; C. selling, which is to put the pears in the selling channel with the MA package and into the consumer family. The method is a storage and transportation fresh keeping method with convenient usage, long storage time, and good fresh keeping effect, and can meet the requirements of the green food.

Description

Technical field: [0001] The invention relates to the technical field of storage, transportation and preservation of fruits and vegetables, in particular to an MA (Modified Atmosphere) storage and transportation method for Laiyang pears. Background technique: [0002] Laiyang pear, also known as Chi pear. It is named after it is produced in Laiyang County, Shandong Province. It is a Chinese specialty and has a cultivation history of more than 300 years. However, Laiyang pears are not resistant to storage, and diseases such as fruit rot, pulp browning, and taste loss are prone to occur during storage and transportation. There is a saying that "Laiyang pears are delicious and difficult to store". At present, the main preservation technology of Laiyang pears is cold storage, that is, storing Laiyang pears in a cold air storage at 0±1°C. Using this technology can prolong the storage period of Laiyang pears and better maintain the original flavor of Laiyang pears. However, fruit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/04
Inventor 周志才
Owner 周志才