جلوگیری از افزایش دمای محصولات غذایی بسته‌بندی شده در زنجیره سرد با استفاده از مواد جاذب انرژی حرارتی

نوع مقاله: ترویجی

نویسندگان

1 دانشجوی دکتری گروه مهندسی صنایع غذایی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، ایران

2 استاد گروه مهندسی مواد و طراحی صنایع غذایی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، ایران

چکیده

استفاده از سامانه‌های ذخیره و انتقال انرژی گرمای نهان با استفاده از مواد تغییر فاز­دهنده راه­حل مؤثری برای ذخیره و انتقال انرژی است که در سال‌های اخیر بسیار مورد توجّه بوده است. این مواد در حین ایجاد تغییر فاز، انرژی حرارتی را ذخیره نموده و در موارد لزوم با تغییر فاز معکوس آن را آزاد می‌کنند. مواد تغییر فاز­دهنده قابلیت حفظ انرژی گرمای نهان را بدون هیچ گونه تغییری حتّی پس از هزاران چرخه فاز، در درون خود دارند. مواد تغییر فاز­دهنده جامد - مایع به سه دسته مواد آلی (واکس‌های پارافین، اسیدهای چرب و ...)، معدنی (نمک‌های هیدراته، فلزات و نمک‌ها) و یوتکتیک‌ها تقسیم ‌می‌شوند. از سوی دیگر، بسته‌بندی‌های مواد غذایی نقش بسیار مهمی در حفاظت و نگهداری مواد غذایی در طی فرآیندهای ذخیره‌سازی، حمل­و­نقل و در نهایت تحویل آن به مصرف‌کننده بر عهده دارند. یکی از راه‌های افزایش عمر نگهداری محصولات غذایی، جلوگیری از نوسانات دمایی ماده غذایی در طی نگهداری و حمل­و­نقل، استفاده از مواد تغییر فاز در بسته‌بندی مواد غذایی می‌باشد. اخیراً استفاده از مواد تغییر فاز­دهنده در سامانه­‌های انتقال و بسته‌بندی مواد غذایی (همچون گوشت، بستنی و ...) مورد توجّه محققین قرار گرفته است. در این مطالعه، ضمن معرفی مواد تغییر فاز­دهنده و انواع آن‌ها، به ارزیابی روش‌‌های تحقیقاتی انجام شده و کاربرد‌های آن‌ها در بسته‌بندی مواد غذایی پرداخته می‌شود.

کلیدواژه‌ها


عنوان مقاله [English]

Preventing the Temperature Rise of Cold Packaged Food Products Using Thermal Energy Absorbing Materials

نویسندگان [English]

  • Elham Alehosseini 1
  • Seid Mahdi Jafari 2
1 Ph.D. Candidate, Department of Food Materials and Process Design, Gorgan University of Agricultural Sciences and Natural Resources
2 Professor, Department of Food Materials and Process Design, Gorgan University of Agricultural Sciences and Natural Resources
چکیده [English]

Application of phase change materials (PCMs) is an effective solution for storage and transfer energy(latent heat)that has been of great interest in recent years. PCMs store thermal energy during the phase change and release it when necessary by reversing the phase change step. PCMs are able to hold latent heat energy without any change even after thousands of phase cycles. Solid-Liquid phase change materials are divided into three categories of organic materials (e.g. paraffin waxes, fatty acids, etc.), mineral materials (e.g. hydrated salts, metals and salts), and eutectics. Food packaging plays a key role in the preservation of food materials during the processes of storage, transportation and delivery to the consumer. One way to increase the shelf life of food products is to avoid the temperature fluctuations in food storage and transportation, using phase change materials in food packaging. Recently, the use of PCMs in food transportation and packaging systems (such as meat, ice cream, etc.) has been the focus of researchers. In this study, while introducing phase change materials and their types, evaluation of research methods, and their application in food packaging were investigated.

کلیدواژه‌ها [English]

  • Food packaging
  • Quality Preservation
  • Phase Changing Materials (PCMs)
  • Temperature Fluctuations

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