ارزیابی ویژگی‌های فیزیکو‌شیمیایی و حسی پرتقال‌های ارقام تامسون ناول و والنسیا در طی نگهداری در سردخانه

نویسندگان
طاهره کاکوئی 1
اسماعیل عطای صالحی 2
الهام مهدیان 3
جواد فتاحی مقدم 4
1 دانشجوی دکتری تخصصی، گروه علوم و صنایع غذایی، واحد قوچان، دانشگاه آزاداسلامی، قوچان، ایران
2 دانشیار گروه علوم و صنایع غذایی، واحد قوچان، دانشگاه آزاداسلامی، قوچان، ایران
3 استادیار گروه علوم و صنایع غذایی، واحد قوچان، دانشگاه آزاداسلامی، قوچان، ایران
4 استادیار موسسه تحقیقات علوم باغبانی، پژوهشکده مرکبات و میوه‌های نیمه‌گرمسیری، رامسر، ایران
10.22034/FSCT.19.128.57
چکیده
یکی از مهمترین مسائل در زمینه پرورش و تولید محصولات باغی به خصوص پرتقال، آبیاری گیاه بصورت قطره ای و میزان آن است. ایران به دلیل داشتن شرایط آب و هوایی خشک با چالش­های بسیاری در زمینه پرورش و تولید این محصول مواجه است. بر همین اساس در پژوهش حاضر اثر تنش کم آبی و مدت زمان نگه‌داری در سردخانه با دما زمان بهینه هر محصول، بر خصوصیات شیمیایی (فعالیت آنتی اکسیدانی، میزان اسید آسکوربیک)، فیزیکی (وزن، تغییرات عرض، طول، حجم، وزن و وزن عصاره)، ویژگی رنگی و خصوصیات حسی مورد ارزیابی قرار گرفت. بررسی تغییرات فیزیکی پرتقال تامسون و والنسیا در نمونه‌های بدون تنش آبی در روز نخست تفاوت چشمگیری نداشت، و در زمان نگهداری کاهش معنی دار داشت. بر اساس نتایج، بیشترین میزان کاهش وزن، وزن عصاره، آنتی اکسیدان، اسید آسکوربیک و حجم واریته‌های پرتقال طی انبارداری، در نمونه‌های تحت تنش کم آبی بود. مولفه های رنگی روشنایی، شاخص a* و شاخص b* درنمونه‌های پرتقال تامسون تحت تنش آبی و در زمان نگهداری کاهش داشت، در پرتقال والنسیا این فاکتورها تفاوت معنی‌داری در مدت زمان نگهداری 30 رو نداشتند. خصوصیات حسی بدطعمی و تلخی در واریته های پرتقال تحت تنش آبی بیشتر بود و در مدت زمان نگهداری و از نظر ارزیابان حسی امتیاز کمتری کسب نمود.
کلیدواژه‌ها
تامسون
والنسیا
تنش آبی
پرتقال
نگهداری

موضوعات

عنوان مقاله English

Evaluation of physical, chemical and sensory properties of Thomson Novell and Valencia oranges during cold storage

نویسندگان English

Tahereh Kakouei 1
Esmaeil Ataye salehi 2
Elham Mahdian 3
Javad Fatahi Moghadam 4
1 Ph. D student, Department of Food Science and Technology, Quchan Branch, Islamic Azad University, Quchan, Iran.
2 Associate Professor, Department of Food Science and Technology, Quchan Branch, Islamic Azad University, Quchan, Iran
3 Assistant Professor, Department of Food Science and Technology, Quchan Branch, Islamic Azad University, Quchan, Iran.
4 Assistant Professor of Horticultural Research Institute, Citrus and Subtropical Fruits Research Institute, Ramsar, Iran
چکیده English

One of the most important problems in the field of cultivation and production of garden products, especially oranges, is the irrigation of the plant and its amount. Iran has many challenges in growing and producing orange fruit due to its diverse climate and being located in a dry region. Based on, in the present study, the effect of water stress and storage time of the product in cold storage (fruits of Thomson Novell cultivar after harvest in cold storage at 5 ° C and 85% humidity for 90 days and Valencia oranges at 20 ° C for Stored for 30 days) on chemical properties (antioxidant activity, ascorbic acid content), physical (weight, width, length, volume, volume, weight and weight of the extract), color characteristics and sensory properties were evaluated. The physical changes of Thomson and Valencia oranges in the samples without water stress on the first day were not significantly different, although minor reduction in storage time. According to the results, the highest weight loss, extract weight, antioxidant, ascorbic acid and volume of orange varieties during storage were in samples under dehydration stress. The color components include brightness, a * and b * decreased in Thomson orange samples under water stress and during storage, but the Valencia orange but did not significant difference was observed. Sensory properties of bad taste and bitterness were higher in oranges under water stress and scored lower in terms of sensory evaluators.

کلیدواژه‌ها English

Thomson
Valencia
water stress
Orange
Storage
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