تأثیر پوشش خوراکی کیتوزان روی برخی ویژگی‌های کیفی و عمر انباری انبه

نوع مقاله: علمی - پژوهشی

نویسندگان

1 استادیار گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه مراغه، مراغه

2 دانشجوی دکتری گروه علوم باغبانی، دانشکده کشاورزی و منابع طبیعی، دانشگاه هرمزگان، بندرعباس

چکیده

به‌منظور بررسی کیفیت و عمر انباری میوه انبه، آزمایشی به‌صورت فاکتوریل در قالب طرح پایه کاملاً تصادفی با سه تکرار در آزمایشگاه مرکزی پارک علم و فناوری همدان، در سال 1394 انجام گردید. تیمارها شامل چهار سطح کیتوزان (صفر (شاهد)، 5/0، 1 و 2 درصد) و مدت زمان نگه‌داری در انباری (صفر (شاهد)، 8، 16 و 24 روز) بودند. نتایج پژوهش نشان داد که تیمار کیتوزان باعث بهبود برخی ویژگی‌های کیفی در میوه انبه گردید. کیتوزان کاهش در سفتی میوه را به تأخیر انداخت. حداکثر سفتی مربوط به تیمار کیتوزان دو درصد (3/5) و کم‌ترین آن مربوط به شاهد (2/3) بعد از 24 روز نگهداری بود. کیتوزان هم‌چنین باعث تأخیر در کاهش وزن، pH و محتوای اسید آسکوربیک گردید. میزان مواد جامد محلول طی دوره انبارمانی کاهش یافت و در انتهای انبارداری اختلاف معنی‌داری بین تیمارها مشاهده نشد. محتوای فنول طی نگهداری ابتدا افزایش و سپس کاهش یافت و در انتها حداکثر میزان آن مربوط به تیمارهای 1 و 2 درصد کیتوزان بدون اختلاف معنی‌دار با یکدیگر و کم‌ترین آن مربوط به تیمار شاهد بود.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Effect of Edible Chitosan Coating on some Qualitative Characteristics and Storage Life of Mango

نویسندگان [English]

  • Seyed Morteza Zahedi 1
  • Sakineh Ehteshami 2
  • Mohammad Ali Aazami 1
1 Assistant Professor, Department of Horticultural Sciences, Faculty of Agriculture, University of Maragheh, Maragheh
2 PhD Student, Department of Horticultural Sciences, Faculty of Agriculture and Natural Resources, University of Hormozgan, Bandar Abbas
چکیده [English]

In order to investigate the quality and shelf life of mango, a factorial experiment was conducted based on a completely randomized design with three replications, in Hamedan Science and Technology Park, in 2015. Treatments consisted of four levels of chitosan (0 (control), 0.5, 1 and 2%) and storage duration of 0 (control), 8, 16, and 24 days. The results showed that chitosan could improve the physical and biochemical properties of mango. Changes in tissue firmness and physiochemical indices including weight loss, pH, TSS, titratable acidity, ascorbic acid, and phenol contents were examined. The results revealed that decline in fruit firmness was effectively inhibited by chitosan coating. After 24 days of storage, maximum firmness was observed after the application of 2% chitosan (5.3) and the lowest was obtained from the control (3.2). Also, the chitosan coating effectively inhibited decline in fruit weight, pH and ascorbic acid. During the period of storage, there was a decrease in Total soluble solids (TSS), but no significant difference was observed among the treatments at the end of the storage period. Phenol content first increased and then decreased at the end of the storage period. The maximum amount of phenol was observed in 1 and 2% chitosan, while the minimum amount was obtained from the control.

کلیدواژه‌ها [English]

  • Ascorbic acid
  • Firmness
  • Phenol
  • Total soluble solid
  • Weight loss

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