Food or edible material: processes – compositions – and products – Processes – Packaging or treatment of packaged product
Patent
1994-09-23
1996-10-15
Ball, Michael W.
Food or edible material: processes, compositions, and products
Processes
Packaging or treatment of packaged product
426316, 426415, 426419, A23B 7148, B65B 5500
Patent
active
055652301
ABSTRACT:
A packaging method and package for preserving cherries using a low barrier plastic film to provide them with a long shelf life is described. The low barrier plastic film has a gas permeability of at least 80 cc O.sub.2 and 490 cc CO.sub.2 per mil per 100 square inches per day at 25.degree. C. and 760 mm HI. Both high density polyethylene and low density polyethylene films having a thickness in the range of 0.0006 to 0.003 inch are used in examples for packaging bags. However other low barrier film plastics can be used including polypropylene The bags are provided with one or more small perforations to adjust their gas permeability. After cooling the cherries to about 36.degree. F. they are deposited in the bags. The bags are partially evacuated to remove about one half the air and an injection gas of at least 30% CO.sub.2 and the balance N.sub.2 is injected to fill the bag which is then heat sealed. As a result, a residual protective gas of about 4-13% 0.sub.2, 4-14% CO.sub.2 and balance N.sub.2 is maintained in the bag after seven days from sealing. The packages of cherries may be stored at about 28.degree. F. for two months or mere without significant decay or mold and without adversely affecting the appearance or taste of the cherries.
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Ball Michael W.
Crispino Richard
Orchard View Farms, Inc.
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