مدلسازی جمعیت میکروبی جوانه گندم پوشش داده شده با امولسیون حاوی اسانس زرین‌گیاه در کیتوزان تحت بسته‌بندی اتمسفر اصلاح شده

نوع مقاله : مقاله پژوهشی انگلیسی

نویسندگان

نسیم نجفی ¹

هاجر عباسی ²

¹ گروه علوم و صنایع غذایی، دانشکده کشاورزی و منابع طبیعی، واحد اصفهان (خوراسگان(، دانشگاه آزاد اسلامی، اصفهان، ایران.

² گروه علوم و صنایع غذایی، دانشکده کشاورزی، واحد اصفهان (خوراسگان)، دانشگاه آزاد اسلامی، اصفهان، ایران.

https://doi.org/10.22067/ifstrj.2023.84145.1280

چکیده

غلات تازه جوانه‌زده به‌دلیل فواید سلامتی بخشی که دارند، منبع غذایی محبوب و پرطرفدار به شمار می‌روند. آنها بسیار حساس بوده و در طول حمل و نقل، فرآوری و نگهداری بسیار مستعد به فساد میکروبی هستند. هدف از این پژوهش بررسی تأثیر پوشش نانوامولسیون حاوی کیتوزان (75/0-0 درصد) و اسانس زرین‌گیاه ( ppm0-300) در زمان غوطه‌وری (10-120 ثانیه) بر خواص میکروبی گندم تازه جوانه‌زده طی نگهداری در دمای 4 درجه سانتی‌گراد می‌باشد. مدلسازی اثر متغیرهای مستقل بر کیفیت محصول توسط روش سطح پاسخ انجام شد. نتایج نشان داد که افزایش غلظت اسانس و محلول کیتوزان باعث کاهش فساد میکروبی محصول می‌شود. غلظت بالای اسانس زرین‌گیاه جمعیت قارچی را پس از 12 روز کاهش داد. پوشش‌دهی گندم جوانه‌زده در سطح بهینه متغیرهای مستقل (62/0 درصد کیتوزان، 57 ppm، و 49/29 ثانیه زمان غوطه‌وری) موجب کاهش معنی‌دار جمعیت میکروبی و قارچی محصول گردید. این تیمار توانست افت وزن را کم کند و سفتی بافت، محتوی فنول کل و اسید آسکوربیک گندم جوانه‌زده را در طول دوره نگهداری سرد حفظ کند، بدون آنکه تأثیری بر خواص حسی آن داشته باشد. یافته‌های این تحقیق نشان داد که پوشش نانوامولسیونی مبتنی بر کیتوزان و اسانس زرین‌گیاه در سطوح مناسب می‌تواند در حفظ کیفیت و افزایش عمر ماندگاری گندم جوانه زده مفید و مؤثر باشد.

کلیدواژه‌ها

آنالیز میکروبی

بادرنجبویه دنایی

پوشش خوراکی

روش سطح پاسخ

موضوعات

• زیست فناوری مواد غذایی

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عنوان مقاله English

Modeling Microbial Population of Coated Sprouted Wheat through Zarrin-Giah Essential Oil in Chitosan Emulsion under Modified Atmosphere Packaging

نویسندگان English

Nasim Najafi ¹

Hajar Abbasi ²

¹ Department of Food Science and Technology, College of Agriculture and Natural Resources, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran

² Department of Food Science and Technology, College of Agriculture and Natural Resources, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran.

چکیده English

Due to its health benefits, fresh sprouted cereals are considered popular food source. They are very sensitive and highly susceptible to microbial spoilage during transportation, processing, and storage. This phenomenon makes them potentially high-risk fresh products. This study aimed to assess the effect of emulsion coating consisting of Dracocephalum kotschyi essential oil (0, 50, 150, 250, 300 ppm)-chitosan solution (0, 0.3, 0.38, 0.63, 0.75%) during the immersion time (10, 25, 55, 85, 100 s) on the microbial properties of fresh sprouted wheat stored at 4°C. The Response Surface Methodology (RSM) was adopted in modeling the independent variables’ effects. The results shown that increase in the essential oil and chitosan solution concentration reduced the microbial spoilage. High concentration of Dracocephalum kotschyi oil decreased the fungus population after 12 days. Coating of sprouted wheat at optimized level of independent variables (0.62% chitosan, 57 ppm Dracocephalum kotschyi oil and 29.49 s immersion time) reduced the microbial and fungal populations. This treatment can reduce weight loss, and maintain tissue firmness, total phenolic, and ascorbic acid content of the sprouted wheat during cold storage, with no effect on its sensory properties. Our findings indicate that nanoemulsion coating based on chitosan and Dracocephalum kotschyi oil at appropriate levels could be beneficial in maintaining sprouted wheat quality and increasing its shelf-life.

کلیدواژه‌ها English

Badrandjboie-Dennai

Edible coating

Microbiological analysis

Response surface methodology

©2023 The author(s). This is an open access article distributed under Creative Commons Attribution 4.0 International License (CC BY 4.0), which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source.

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