PACKAGING MATERIAL FOR APPLES

PURPOSE:To prevent putrefaction of apples and hold the freshness degree for a long period, by blending a packaging material for apples with a blending agent consisting of a hydroxycarboxylic acid and/or L-ascorbic acid and a ferrous salt. CONSTITUTION:This packaging material for apples is prepared b...

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Bibliographische Detailangaben
Hauptverfasser:	YOSHIKAWA SEIICHI, SHIMAMURA SEIJI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL RIPENING OF FRUIT OR VEGETABLES FOODS OR FOODSTUFFS HUMAN NECESSITIES PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT,VEGETABLES, EDIBLE SEEDS SEPARATION THE PRESERVED, RIPENED, OR CANNED PRODUCTS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES TRANSPORTING
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Beschreibung
Zusammenfassung:	PURPOSE:To prevent putrefaction of apples and hold the freshness degree for a long period, by blending a packaging material for apples with a blending agent consisting of a hydroxycarboxylic acid and/or L-ascorbic acid and a ferrous salt. CONSTITUTION:This packaging material for apples is prepared by blending a blending agent consisting of (A) a hydroxycarboxylic acid having >=2 carboxyl groups in the molecule and/or L-ascorbic acid and (B) a ferrous salt. The blending molar ratio [(A):(B)] of the components (A) to (B) is preferably 0.01:1-1.5:1. Tartaric acid, citric acid, malic acid, etc., may be cited as the above-mentioned hydroxycarboxylic acid. Ferrous sulfate, ferrous chloride, ferrous nitrate, etc., may be cited as the ferrous salt. The ferrous salt is normally prepared as an aqueous solution in about 0.01-1mol/l concentration. A basic material for packaging is blended with the above-mentioned blending agent by a method for impregnating, coating, spraying, etc., and dried to afford the aimed packaging material.