PURPOSE: To obtain a freshness-keeping agent absorbing oxygen and generating carbon dioxide gas in sealed system, capable of keeping the freshness of foods and mitigating the reduction of pressure or shrinkage of a sealed container, by using iron powder, a bicarbonate, etc., as raw materials.
CONSTITUTION: (A) More than about 0.5g of iron powder of ≥10 mesh based on 500ml of air to be treated is mixed with (B) about ≥0.2g (based on 500ml of air) of preferably powdery bicarbonate such as sodium bicarbonate and potassium bicarbonate, (C) about 5W200pts.wt. of preferably powdery sodium chloride based on 100pts.wt. of the bicarbonate and (D) about 10W500pts.wt. of a 2W8C dicarboxylic acid such as fumaric acid and phthalic acid based on 100pts.wt. of the ferrous chloride. The mixture is sealed in an air-permeable small bag. At least a part of the packaging material of the bag has a Gurley permeability of ≤1,000sec/100ml air.
| JPS62110725 | METHOD FOR DEOXIDIZING ENCLOSED CONTAINER |
| JPS5170816 | SHOKUHINNO HOZONHO |
HATAKEYAMA HIDETOSHI
KASHIBA TAKASHI
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