با همکاری انجمن علوم و صنایع غذایی ایران

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشگاه تبریز

2 تبریز

چکیده

در طی دوره نگهداری تخم مرغ، به‌دلیل خروج دی اکسیدکربن و بخار آب از طریق منافذ موجود در پوسته، تغییرات نامطلوبی در آن ایجاد می‌گردد. یکی از روش‌های عملی برای کاهش و جلوگیری از این تغییرات، پوشش‌دهی تخم‌مرغ با استفاده از پوشش‌های پلیمری می‌باشد. در این مطالعه، محلول‌های پوشش‌دهنده بر پایه کربوکسی متیل سلولز (CMC) و گلیسرول، به‌صورت ساده و یا حاوی اسید اولئیک (1 و 2 درصد حجمی-حجمی) و مواد ضد میکروبی (شامل ناتامایسین، بوتیل هیدروکسی آنیزول و سوربات پتاسیم)، تهیه گردید و تاثیر آن‌ها بر ویژگی‌های فیزیکوشیمیایی تخم‌مرغ تازه (شامل درصد کاهش وزن، تغییراتpH ، اندیس ها و اندیس زرده) در طول 5 هفته نگهداری در دمای 25 درجه سانتی‌گراد، مورد بررسی قرار گرفت. نتایج نشان داد که پوشش‌دهی با بیوپلیمر CMC، تاثیر شایانی بر حفظ کیفیت تخم‌مرغ داشته و ماندگاری را حدود یک تا سه هفته، بسته به نوع پوشش، افزایش می دهد. همچنین بررسی نتایج نشان داد که افزودن اسید اولئیک به محلول پوشش‌دهنده بر پایه CMC، تاثیر معنی‌دار مثبتی (05/0P

کلیدواژه‌ها

عنوان مقاله [English]

Application of Carboxymethyl Cellulose Based Coatings Containing Oleic Acid and Antimicrobial Compounds for Improving Quality and Extending Shelf-life of Egg

نویسندگان [English]

  • Shahram Mohammadi
  • Babak Ghanbarzadeh 1
  • Mahood Sowti Khiabani 2
  • Shiva Ghiyasifar
  • Seyed Hossein Jalali

1 University of Tabriz

2

چکیده [English]

During storage of eggs, unfavorable changes occur due to exertion of CO2 and water vapor from through of crust pinholes. One of the practical methods for preventing or reducing these changes is to use biopolymer-based coatings. In this research, five coating solutions based on carboxymethyl cellulose (CMC) and glycerol as plasticizer, oleic acid (1 and 2% V/V) and antimicrobial agents (potassium sorbate, natamycin and butylated hydroxyanisole) were prepared and their effects on physicochemical properties of the eggs (weight loss, pH, Haugh unit (HU) and yolk index (YI)) were evaluated at room temperature (25 ) during 5 weeks storage. The results showed that CMC- based coatings have considerable effects on quality of eggs and shelf life of them increased 1-3 weeks (depending on coating type). As well as, adding oleic acid to the CMC- based coating had positive significant effects (P < 0.05) on quality parameters of eggs during 5 week storage. Adding antimicrobial compounds also caused significant difference in all parameters, except yolk index, in comparison to CMC coating without antimicrobial compounds.

کلیدواژه‌ها [English]

  • Coating
  • Carboxymethyl Cellulose
  • Egg
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