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تأثیر واکس کارنوبا بر کیفیت حسی و تغذیه‌ای میوه انار رقم ملس ساوه طی نگهداری در انبار سرد

نوع مقاله : علمی - پژوهشی

نویسندگان

1 استادیار، گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه ولی عصر (عج) رفسنجان، رفسنجان، ایران

2 استاد، گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه ولی عصر (عج) رفسنجان، رفسنجان، ایران

3 دانش‌آموخته کارشناسی ارشد علوم باغبانی ، گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه ولی عصر (عج) رفسنجان رفسنجان، ایران

چکیده

چکیده
ازدلایلمحدودیتانبارداریمیوۀانارکاهش وزن و صدمه سرمازدگیاست. در سال 1395 به منظور بررسی اثر واکس کارنوبا بر انبارمانی میوه انار آزمایشی در قالب فاکتوریل بر پایه طرح کاملاً تصادفی و با چهار تکرار در دانشگاه ولی عصر (عج) رفسنجان انجام شد. تیمارها شامل واکس کارنوبا در سه غلظت صفر، 5/0 و 1 درصد و دوره انبارمانی در دو سطح (45 و 90 روز) در سردخانه با دمای 1±4 درجه سانتی‌گراد و رطوبت نسبی 5 ± 85 درصد انجام شد. نتایج این پژوهش نشان داد که واکس کارنوبا قادر به جلوگیری از سرمازدگی، کاهش وزن و حفظ اسید کل، پ‌هاش و آنتوسیانین تا پایان دوره انبارمانی شد ولی نشت یونی را فقط تا روز 45 انبارمانی کنترل کرد. سفتی پوست میوه و آریل‌ها در تیمار کارنوبا بیشتر از نمونه شاهد بود. بیشترین میزان سفتی پوست میوه مربوط به هر دو تیمار کارنوبا در روز 45 انبارمانی (8 درصد بیشتر نسبت به نمونه شاهد) بود. افزایش غظت واکس کارنوبا منجر به کاهش میزان ویتامین ث شد ولی تأثیری بر خاصیت آنتی‌اکسیدانی نداشت. بر اساس نظر پانلیست‌ها عطر و طعم، تازگی پوست و پذیرش کلی میوه‌های انار در هر دو تیمار کارنوبا بهتر از نمونه شاهد بود.

کلیدواژه‌ها

عنوان مقاله [English]

Effect of Carnuba Wax on Sensory and Nutritional Quality of Pomegranate "Malas-e-Saveh" Fruit during Cold Storage

نویسندگان [English]

  • Fatemeh Nazoori 1
  • Seyed Hossein Mirdehghan 2
  • Arezoo Rafie 3

1 : Assistant Professor, Department of Horticulture, Faculty of of Agriculture, Vali-e-Asr University of Rafsajan, Rafsajan Iran

2 Professor, Department of Horticulture, Faculty of of Agriculture, Vali-e-Asr University of Rafsajan, Rafsajan Iran

3 M.Sc. Graduate of Horticulture, Department of Horticulture, Faculty of of Agriculture, Vali-e-Asr University of Rafsajan, Rafsajan Iran

چکیده [English]

Abstract
Background and Objectives
Pomegranate (Punica granatum L.) is one of the most important fruits grown on a commercial scale in Iran. It has gained popularity worldwide due to its high economic, nutraceutical, and therapeutic values. Chilling injury and weight loss are the most important limiting factors for pomegranate fruit storage. Application of an edible coating such as carnuba wax on the fruit surface imparts a glossy appearance and better color, reduces fruit weight loss, extends storage life, and prevents microbial spoilage, which is extremely important to perishable fruit. Edible coatings create a modified atmosphere around the fruit by providing a semipermeable barrier to water vapor and gases, and their use offers an effective alternative to film packaging due to their environmentally friendly characteristic.
 
Material and Methods
The present study conducted a factorial design based on completely randomized design with four replications to evaluate the effect of carnuba wax on pomegranate fruit storage. The treatments included carnuba wax in three concentrations 0, 0.5%, and 1%, and storage time in 3 levels (0, 45, and 90 days). After immersion and drying, the fruits were packed in plastic baskets and kept in a cold room at 4 ± 1 °C with 85 ± 5% of relative humidity. In each sampling removal, quantitative and qualitative characteristics such as weight loss (%), electrolyte leakage (percentage), chilling index, tissue firmness, total acidity, pH, color indices (aril and skin), fruit flavor, anthocyanin, skin freshness, and overall fruit acceptance were examined.
 
Results
The results showed that carnuba wax prevented weight loss until the end of the storage period (90 days) but controlled ion leakage until 45 days of storage. The skin firmness of fruits and arils was higher in carnuba than in control samples. Increasing the concentration of carnuba wax resulted in lowering vitamin C but did not affect the antioxidant capacity. According to the panelists', the flavor, skin freshness, and pomegranate fruits' appearance in both carnuba treatments were better than the control samples.
 
Discussion
The results of this study showed that carnuba-coated fruit has protective quantitative and qualitative characteristics during cold storage. Moreover, exogenous application of carnauba wax showed improvement in pomegranate storability at 4 °C, which otherwise leads to chilling injury and reduction in quality. The treatment with carnauba wax preserves fruit weight, total acidity, and skin freshness. Pomegranate carnuba-coated fruit exhibited a significantly lower chilling rate as compared to the control samples. According to the results, carnuba 0.5% maintained most qualitative and quantitative properties of pomegranate fruit until 90 days at 4°C.

کلیدواژه‌ها [English]

  • Antioxidant
  • Chilling
  • Coating
  • Fruit quality
  • Storage period
مراجع
References
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تولیدات گیاهی
دوره 44، شماره 1
خرداد 1400
صفحه 51-64
فایل ها
هم رسانی
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