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Abstract

Packaging is one of the main steps in food processing which extends the shelf life of fruit through controlling factors that affect fruit quality. Optimization of effective factors in packaging of Golden Delicious apple is an important issue in it’s storage as well as in its exporting conditions. In this study the effect of temperature (1, 6 and 10°C) on respiration rate of Golden delicious apple was studied through measuring CO2 content, using gas chromatography. also, the effect of packaging materials (wooden, cellophane and polyethylen films) in different storage temperatures (1, 6 and 10°C) was studied during a period of five months of storage. Qualitative factors including dry matter, firmness, pH, titrable acidity and total soluble solids (TSS) were measured every 3 week interval. Results indicated that the climactric peak occured at 1,6 and 10°C in 100 th, 45 th and 20 th day respectively. Fruits stored at 1, and 6°C, and packaged in cellphane benefited from a better quality, followed by wooden and polyethylen. At 10°C and of higher temperatures and also for freshly consumed apples, polymeric packaging (cellophane and polyethylen films) resulted better than the wooden type. Different packaging materials had no significant effect on either pH or titrable acidity.

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