Method for storage of horticultural products in freshness

Food or edible material: processes – compositions – and products – Processes – Storing solid material under controlled condition

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252466PT, 422 4, 422 40, A23B 714, A23B 7148, B01J 2356

Patent

active

043316930

ABSTRACT:
There is provided a method for preservation of horticultural products in freshness by circulation of the atmosphere surrounding these products and removal of ethylene from it on the outside of the storage chambers, consisting in removing ethylene by catalytic combustion. Combustion of ethylene is carried out advantageously in the presence of platinum catalyst, obtained by impregnation of active aluminum oxide of specific surface area of about 200 m.sup.2 /g with a 0.05-0.5% solution of chloroplatinic acid followed by drying and heating in the stream of air at the temperature up to 550.degree. C. Ethylene combustion is carried out advantageously in the presence of platinum catalyst additionally activated by impregnation with oleic acid at the temperature of 60.degree.-80.degree. C., slow heating in the stream of nitrogen up to the temperature of 400.degree.-450.degree. C. for 2 hrs, followed by heating in the stream of air at the temperature 500.degree.-550.degree. C.

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Patent Abstracts 3203771, 3102778, 3102780, 3102779, 3205049.

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