ماندگاری و برخی خصوصیات کیفی فلفل دلمه‌ای (capsicum annum L.) بسته‌بندی شده در اتمسفر اصلاح شده

نویسندگان
محمد سیاری 1
صبا صادقی 2
مصطفی کرمی 3
1 دانشیار علوم باغبانی، گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه بوعلی سینا
2 دانش آموخته کارشناسی ارشد رشته ی تکنولوژی پس از برداشت، دانشکده کشاورزی، دانشگاه بوعلی سینا
3 استادیار علوم و مهندسی صنایع غذایی، دانشکده صنایع غذایی، دانشگاه بوعلی سینا
چکیده
امروزه، بسته‌بندی در اتمسفر اصلاح شده به عنوان یکی از بهترین روش ها، جهت افزایش زمان نگهداری میوه و سبزیجات استفاده می‌شود. فلفل دلمه‌ای به عنوان منبع غنی از ویتامین ث یکی از سبزیجات بسیار فسادپذیر است که نیازمند حمل و نقل مناسب و مراقبت کافی جهت حفظ عمر انباری و کیفیت است. عمر انباری فلفل‌دلمه‌ای به علت از دست دهی سریع آب در طول ذخیره‌سازی طولانی مدت و حساسیت به سرمازدگی و پوسیدگی‌های شایع‌ توسط دو میکروارگانیسم بوتریتیس و آلترناریا، محدود می‌شود. بنابراین با بهینه‌سازی روش‌های ماندگاری این محصول، می‌توان به مقدار زیادی از ضایعات آن کاست. در این پژوهش اثر تیمار بسته‌بندی در اتمسفر اصلاح شده با سه ترکیب گازی شامل ترکیب گازی شاهد (ترکیب گازهای هوای معمولی که شامل 21% اکسیژن، 03/0% دی‌اکسیدکربن و 78% نیتروژن)، ترکیب گازی اولیه شامل 10% اکسیژن، 5% دی‌اکسیدکربن و 85% نیتروژن و ترکیب گازی ثانویه متشکل از 5% اکسیژن، 10% دی اکسیدکربن و 85% نیتروژن در پوشش پلی اتیلنی و نگهداری در دمای 8 درجه سانتی‌گراد و رطوبت نسبی 95 درصد بر ویژگی های فلفل دلمه ای مانند درصد کاهش وزن، سفتی بافت، pH و مواد جامد محلول بررسی گردید. تاثیر این تیمارها در قالب طرح کاملا تصادفی و آزمایش فاکتوریل با سه تکرار روی صفاتی از قبیل درصد کاهش وزن، سفتی بافت، pH و مواد جامد محلول طی 5 دوره 0، 10، 20، 30 و 40 روز پس از برداشت مورد بررسی قرار گرفت. نتایج نشان داد که پس از هر دوره انبارمانی نمونه‌های تیمار شده با اتمسفر اصلاح شده 5% اکسیژن و 10% دی‌اکسیدکربن به دلیل داشتن دی‌اکسیدکربن بیشتر و کم کردن تنفس، در حفظ خصوصیات کیفی برای فلفل دلمه‌ای مناسب‌تر بوده و به طورکلی نگهداری این محصول در بسته‌بندی با اتمسفر اصلاح شده، سبب حفظ کیفیت و افزایش عمر ماندگاری آن گردید.
کلیدواژه‌ها
بسته بندی
فلفل
کاهش وزن
کپک زدگی
سفتی

موضوعات

عنوان مقاله English

Shelf life and some qualitative characteristics of Belly Pepper (capsicum annum L.) packed in modified atmosphere

نویسندگان English

Mohammad Sayyari 1
Saba Sadeghi 2
Mostafa Karami 3
1 3- Associated professor, Department of Horticulture, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran
2 1- M.Sc. Student of Postharvest Technology, Department of Horticulture, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran
3 2- Assistant professor, Faculty of Food Science and Technology, Bu-Ali Sina University, Hamedan, Iran
چکیده English

Today, packaging in the modified atmosphere is used as one of the newest types of packaging to increase the shelf life of fruits and vegetables. Sweet peppers, as a rich source of vitamin C, are one of the most perishable vegetables that require proper transportation and care for shelf life and quality. The shelf life of pepper is limited due to the rapid loss of water during long storage, and the sensitivity to frostbite and common spoilage by Botrytis and Alternaria microorganisms. Therefore, by optimizing the durability of this product, it can be possible to lower a large amount of its waste.

In this study, the effect of packaging in a modified atmosphere with three gas combinations containing a combination of conventional gas (which contains 21% oxygen, 0.03% carbon dioxide and 78% nitrogen), the primary gas composition consists of 10% oxygen, 5% carbon dioxide And 85% nitrogen and secondary gas composition consisting of 5% oxygen, 10% carbon dioxide and 85% nitrogen in polyethylene film and maintaining at 8 °C and 95% relative humidity on some properties of belly pepper was evaluated.

The effects of these treatments were evaluated in a completely randomized design with factorial experiment and three replications on traits such as weight loss, texture hardness, pH and solids content during 0, 10, 20, 30 and 40 days after harvest. The results showed that, after each storage period, 5% oxygen treated and 10% carbon dioxide treated treatments were better suited for maintaining quality characteristics for pepper, due to more carbon dioxide and lower respiration, and generally keeping the product in packaging with Modified atmosphere, preserving quality and prolonging its shelf-life

کلیدواژه‌ها English

packaging
Pepper
Weight loss
mold
Hardness
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