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Effect of chitosan coatings on some quality indices of apricot (Prunus armeniaca L.) during cold storage | ||
| Caspian Journal of Environmental Sciences | ||
| مقاله 3، دوره 8، شماره 1، فروردین 2010، صفحه 25-33 اصل مقاله (262.24 K) | ||
| نویسندگان | ||
| M. Ghasemnezhad* 1؛ M. A. Shiri2؛ M. Sanavi2 | ||
| 1Dept. of Horticulture, Faculty of Agriculture, University of Guilan, Rasht, Iran. *Corresponding author's E-mail: ghasemnejad@guilan.ac.ir | ||
| 2Department of Horticultural Sciences, Faculty of Agriculture, University of Guilan, Rasht, Iran. | ||
| چکیده | ||
| In this study, the effectiveness of chitosan coating treatment to control weight loss and maintaining fruit quality of apricot was investigated. Fruits were coated with 0.25%, 0.5% and 0.75% chitosan as well as distilled water (control). Following treatments, fruits were stored at 0?C and 80 ? 2% relative humidity for 25 days. The weight loss, total soluble solids (TSS), titratable acidity (TA), TSS/TA, pH, vitamin C, total phenolics and antioxidant activity (DPPHsc%) were followed at an interval of 5 days up to 25 days. Weight loss from all treated and untreated fruits increased over storage time. The weight loss of chitosan coated fruits was increased in comparison to untreated samples. There was no significant difference for total soluble solids (TSS), titratable acidity (TA), TSS/TA, pH, vitamin C in coated and uncoated fruits storage. Chitosan coatings significantly increased the content of total phenolics and antioxidant activity, as 0.5% chitosan showed maximum total phenolics (82.65 mg GAE/100g) and antioxidant activity (23.77 DPPHsc%). The chitosan coatings proved to induce the antioxidant capacity and also to sustain the total phenolic content. REFERENCES Agar, T. and Polate, A. (1995). Effect of different packing materials on the storage quality of some apricot varieties. Acta Hortic., 384: 625-631. Aherne, S.A. and ƠBrien, N.M. (2002). Dietary flavonols: Chemistry, food content, and metabolism. Nutr, 18: 75–81. Arts, C.W., Vande Putte, B. and Hollinan, P.C.H. (2000). Catechin contents of foods commonly consumed III the Netherlands. 1. Fruits, vegetables, staple foods and processed foods. J. Agric. Food. Chem., 48: 1746-1751. Bai, R.K., Huang, M.Y. and Jiang, Y.Y. (1988). Selective permeabilities of chitosan-acetica acid complex membrane and chitosan-polymer complex membrane for oxygen and carbon dioxide. 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| کلیدواژهها | ||
| Chitosan coating؛ Apricot؛ Cold storage؛ Phenolic content؛ Antioxidant capacity | ||
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