اثرات ترکیبی کلرید کلسیم و کیتوسان بر کیفیت پس از برداشت بامیه (Abelmoschus esculentus L.) در طی انبارمانی

نویسندگان
1 گروه علوم و مهندسی باغبانی، دانشکده کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان، ملاثانی، ایران،
2 گروه علوم و مهندسی باغبانی، دانشکده کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان، ملاثانی، ایران
چکیده
بامیه یک محصول سبزی با ارزش غذایی بالا است که پس از برداشت به سرعت کیفیت خود را از دست داده و دچار فساد می شود. این پژوهش با هدف بررسی تأثیر غلظت‌های مختلف کلرید کلسیم همراه با پوشش کیتوسان بر خصوصیات کیفی غلاف‌های بامیه در طول پس از برداشت انجام شد. غلافهای بامیه در غلظت های مختلف کلرید کلسیم (0%، 1%، 2%، 4%) غوطه ور و سپس با کیتوسان (0، 5/0، 1 و 5/1 %) پوشانده شد. آنالیز فیزیکوشیمیایی شامل: کاهش وزن، سفتی، اسیدیته قابل تیتراسیون، مواد جامد محلول کل، محتوای اسید آسکوربیک، محتوای فنول کل، و جذابیت ظاهری و میزان پوسیدگی در فواصل زمانی 4 روزه به مدت 16 روز انجام شد. نتایج نشان داد که در طی انبارمانی کاهش وزن، مواد جامد محلول، میزان پوسیدگی بامیه افزایش و میزان سفتی بافت، اسید اسکوربیک، محتوای فنل کل، اسیدیته قابل تیتر و جذابیت ظاهری افت شدیدی نشان داد. پوشش کیتوسان حاوی کلرید کلسیم به‌طور معنی‌دار در حفظ خصوصیات کیفی بامیه مؤثر بود. در بین تیمارهای مورد بررسی، ترکیبی از کلرید کلسیم 2 درصد و کیتوسان 1% موثرترین روش برای حفظ بالاترین امتیاز شاخص کلی کیفیت غلاف‌های بامیه ذخیره شده در دمای 4 درجه سانتی گراد تا 16 روز بود. این تیمار همچنین کاهش وزن را به میزان قابل توجهی کاهش داد و اسید آسکوربیک، محتوای فنل کل، اسیدیته قابل تیتر و جذابیت ظاهری را حفظ کرد و افزایش مواد جامد محلول و پوسیدگی را به تاخیر انداخت.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Combination effects of calcium chloride and chitosan on the postharvest quality of okra (Abelmoschus esculentus L.) during storage

نویسندگان English

Majid Dosti mirghaed 1
Mohammad Reza Zare-Bavani 2
1 Department of Horticultural Science, Faculty of Agriculture, Agricultural Sciences and Natural Resources University of Khuzestan, Mollasani, Iran.
2 Department of Horticultural Science, Faculty of Agriculture, Agricultural Sciences and Natural Resources University of Khuzestan, Mollasani, Iran.
چکیده English

Okra is a vegetable crop with high nutritional value that quickly loses its quality and decay after harvesting. This research aimed to investigate influences of calcium chloride concentrations combined with chitosan coating on the quality characteristics of okra pods during post-harvest. Okra pods were immersed in different concentrations of calcium chloride (0%, 1%, 2%, 4%) and then covered with chitosan (0, 0.5, 1 and 1.5%). Physicochemical analysis including: physiological weight loss, firmness, titratable acidity, total soluble solids, ascorbic acid content, total phenol content, and visual appearance and decay rate were performed at 4-day intervals for 16 days. The results showed that during storage, weight loss, soluble solids, and decay rate increased and firmness, ascorbic acid, total phenol content, titratable acidity and visual appearance showed a sharp decrease. Chitosan coating containing calcium chloride was significantly effective in maintaining the quality characteristics of okra. Among the investigated treatments, a combination of 2% calcium chloride and 1% chitosan was the most effective method to maintain the highest overall quality index score of okra pods stored at 4°C for up to 16 days. This treatment also significantly reduced weight loss and maintained ascorbic acid, total phenolic content, titratable acidity and visual appearance, and delayed increase in soluble solids and decay.

کلیدواژه‌ها English

Ascorbic acid
Physiological weight loss
Total Phenol
Total soluble solids
Visual appearance
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