حفظ کیفیت اورلاندو تانجلو طی انبار با کاربرد قبل از برداشت ملاتونین و پس از برداشت پوشش زانتان

نوع مقاله : مقاله پژوهشی لاتین

نویسندگان

• سکینه ملایی محمد آبادی
• سمیه رستگار

گروه علوم باغبانی، دانشکده کشاورزی و منابع طبیعی، دانشگاه هرمزگان، بندرعباس، ایران

https://doi.org/10.22067/ifstrj.2024.87553.1324

چکیده

این مطالعه با هدف تعیین تأثیر محلول‌پاشی قبل از برداشت ملاتونین و غوطه‌وری پس از برداشت صمغ زانتان بر کیفیت پس از برداشت میوه نارنگی Orlando tangelo  انجام شد. پس از انتخاب درختان مناسب و یکنواخت، محلول‌پاشی ملاتونین در سه غلظت0 میکرومولار 100 میکرومولار و 200 میکرومولار انجام شد. محلول‌پاشی یک ماه قبل از برداشت انجام شد و سه بار در فواصل یک هفته تکرار شد. علاوه بر این، میوه‌ها پس از برداشت در دو غلظت مختلف صمغ زانتان (0/1 و 0/2 درصد) غوطه‌ور شدند، میوه‌ها در انبار سرد در دمای 1 ± 5 درجه سانتی‌گراد نگهداری شدند. ارزیابی خصوصیات میوه در زمان برداشت و پس از 45 و 90 روز نگهداری در سردخانه انجام شد. نتایج نشان داد که محلول‌پاشی ملاتونین با غلظت 100 میکرومولار بیشترین وزن میوه و گوشت را نشان داد. علاوه بر این، تیمار ملاتونین منجر به سطوح بالاتر اسید اسکوربیک و افزایش اسیدیته میوه نسبت به شاهد شد. در طول نگهداری، میوه‌های تیمار شده با پوشش ملاتونین و زانتان کیفیت بهتری نسبت به شاهد نشان دادند. در پایان آزمایش، کمترین کاهش وزن در میوه‌های تیمار شده با 200 میکرومولار ملاتونین + 0/1 درصد زانتان مشاهده شد. بیشترین مقدار اسید اسکوربیک در 100 میکرومولار ملاتونین + 0/1 درصد زانتان مشاهده شد. حداکثر فعالیت آنتی‌اکسیدانی در 100 میکرومولار و 200 میکرومولار + 0/1 درصد زانتان و همچنین 100 میکرومولار ملاتونین به تنهایی مشاهده شد. به‌طور کلی، یافته‌ها نشان می‌دهند که محلول‌پاشی قبل از برداشت و استفاده از پوشش‌ زانتان می‌تواند استراتژی‌های مؤثری برای حفظ کیفیت Orlando tangelo در طول انبارمانی سرد باشد.

کلیدواژه‌ها

• اسپری
• انبارمانی
• صمغ زانتان
• مرکبات
• ملاتونین

موضوعات

• شیمی مواد غذایی

عنوان مقاله [English]

Preharvest Melatonin and Postharvest Xanthan Gum Coating Maintain the Quality of Orlando Tangelos during Storage

نویسندگان [English]

• Sakineh Molaei Mohammad Abadi
• Somaye Rastegar

Department of Horticultural Sciences, Faculty of Agriculture and Natural Resources, University of Hormozgan, Bandar Abbas, Iran

چکیده [English]

This study aimed to determine the effects of preharvest spraying of melatonin and postharvest immersion in xanthan gum on the quality and postharvest performance of Orlando tangelo mandarin fruits. After selecting suitable and uniform trees, melatonin foliar spraying was performed at three different concentrations: 0,100 μM, and 200 μM. Foliar spraying was performed one month before harvest and was repeated three times at weekly intervals. Furthermore, the fruits were immersed in two different concentrations of xanthan gum (0.1% and 0.2%) postharvest, these fruits were stored in a cold room at 5 ± 1 °C. Evaluation of fruit characteristics was carried out at the time of harvest and after 45 and 90 days of cold storage. The results showed that foliar spraying of melatonin at a concentration of 100 μM showed the highest weight and pulp of the fruit. Furthermore, melatonin treatment resulted in higher levels of ascorbic acid and increased fruit acidity compared to the control. During storage, fruits treated with melatonin and xanthan coatings showed better quality than those of the control. At the end of the experiment, the lowest weight loss was observed in fruits treated with 200 μM melatonin + 0.1% xanthan. The highest ascorbic acid content was observed in the 100 μM melatonin +0.1% xanthan. The maximum antioxidant activity was observed in 100 μM and 200 μM +0.1% xanthan and also 100 μM melatonin alone. In general, the findings suggest that preharvest foliar spraying and the postharvest application of xanthan coatings can be effective strategies for maintaining Orlando tangelo quality during cold storage.

کلیدواژه‌ها [English]

• Citrus
• Melatonin
• Spraying
• Storage
• Xanthan gum

©2024 The author(s). This is an open access article distributed under Creative Commons Attribution 4.0 International License (CC BY 4.0).

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