تأثیر محلول پاشی پس از برداشت اسانس آویشن بر عمر انبار مانی و کیفیت میوه انار (رقم پوست قرمز طارم)

نوع مقاله : مقالات پژوهشی

نویسندگان

• مهشید غفوری ¹
• علی سلیمانی ²
• ولی ربیعی ¹
• رقیه همتی ¹

¹ دانشگاه زنجان

² زنجان

https://doi.org/10.22067/jhorts4.v29i4.26064

چکیده

استفاده از اسانس های گیاهی به عنوان ایده ای جدید در کاهش ضایعات پس از برداشت و افزایش عمر انبارمانی محصولات باغبانی و کنترل آلودگی قارچی در کشاورزی توسعه یافته مطرح می باشد. در همین راستا، آزمایشی به منظور بررسی محلول پاشی اسانس آویشن بر عمر انبار مانی و کیفیت میوه انار رقم پوست قرمز طارم، به صورت فاکتوریل در قالب طرح کاملاً تصادفی با دو فاکتور، اسانس آویشن در چهار سطح (صفر، 500، 1000، 1500 میلی گرم در لیتر) و زمان در سه سطح (یک ماه، دو ماه و سه ماه انبارمانی) در دمای شش درجه سانتی گراد و رطوبت نسبی 85 درصد با چهار تکرار اجرا گردید. نتایج آزمایش انار های آلوده نشده با اسپور قارچ و انار های آلوده شده با اسپور قارچ نشان داد با افزایش مدت انبارمانی درصد کاهش وزن، درصد نشت یونی، درصد سرمازدگی و درصد پوسیدگی افزایش یافت. میوه های تیمار شده با اسانس آویشن آنتوسیانین بیشتری نسبت به شاهد داشت. اسانس آویشن از کاهش اسـید قابـل تیتراسیون و تجزیه آن به قندها جلوگیری کرد. اثر متقابل اسانس آویشن و زمان انبارمانی در انار های آلوده نشده با اسپور قارچ و انار های آلوده شده با اسپور قارچ نشان داد بیشترین کاهش وزن و نشت یونی در تیمار شاهد در ماه سوم انبارمانی بود. اثر متقابل اسانس آویشن و زمان انبارمانی در انار های آلوده نشده با اسپور قارچ نشان داد کمترین مواد جامد محلول در تیمار آویشن 500 میلی-گرم در لیتر در ماه دوم انبارمانی بود. اثر متقابل اسانس آویشن و زمان انبارمانی در انار های آلوده شده با اسپور قارچ نشان داد بیشترین اسیدتیه آب-میوه در تیمار شاهد در ماه سوم انبارمانی بود.

کلیدواژه‌ها

• انبارمانی
• پوسیدگی
• سرمازدگی
• کاهش وزن
• نشت یونی

20.1001.1.20084730.1394.29.4.6.0

عنوان مقاله [English]

Effect of Postharvest Application of Thyme Essential oil on Quality and Shelf-life of Pomegranate (Punica granatum cv. Tarom red skin) Fruit

نویسندگان [English]

• Mahshid Ghfouri ¹
• Ali Soleimani ²
• Vali Rabiei ¹
• Roghayeh Hemmati ¹

¹ University of Zanjan

² University of Zanjan

چکیده [English]

Introduction: Due to high quality, Iran pomegranate is quite competitive compared to other countries is unrivaled among agricultural products and has great economic importance. Using essential oil is a new idea to reduce postharvest losses and increase the horticultural crop storage life and control of fungal infection. In this context, a factorial experiment based on completely randomized design was conducted to study the postharvest spraying of thyme essential oil on storage life and qualitative characteristics of pomegranate fruit (cv. Tarom red skin)
Materials and Methods: Pomegranate fruit (cv. Tarom red skin) was prepared and transferred to University of Zanjan, Horticulture postharvest physiology lab. Treatments were included essential oil of thyme at four levels (0, 500, 1000, 1500 mg/l) and the cold time storage (6 °C and 85% of relative humidity) at three levels (one, two and three months (by four replications. In the first experiment, 180 normal pomegranate fruits were treated with thyme essential oil. In the second experiment, fruits were infected with spores of the fungus Aspergillus niger and then treated with essential oil. During experiment, total soluble solids (TSS), titratable acidity (TA), TSS/TA ratio, pH, anthocyanin, electrolyte leakage, chilling injury, weight loss and fungal decay were evaluated. Fruit juice TSS was determined with a hand-refractometer at room temperature. TA was determined by titration an aliquot (20 mL) of the juice with 0.1 N NaOH and the results were expressed as a percentage of citric acid. The maturity index (TSS/TA ratio) was evaluated as the TSS/TA ratio. Fruit juice pH was measured using a pH meter. Anthocyanin was performed to method Fuleki & Francis. Electrolyte leakage was measured according to McCollum & McDonald method. Weight loss was measured according to Ershadi method. Chilling injury was measured by Wang method. Decay was visually evaluated and expressed as percentage. An analysis of variance was used to analyze difference between treatments and the Duncan test was applied for mean separation at p

کلیدواژه‌ها [English]

• Chilling Injury
• Electrolyte leakage
• Fungus Decay
• Storage time
• Weight loss

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