کاربرد نانوکریستال های سلولزی در فیلم های بسته بندی مواد غذایی

نوع مقاله: مقاله پژوهشی

نویسنده

دانشجوی دکتری تخصصی بهداشت مواد غذایی، دانشکده دامپزشکی، دانشگاه چمران اهواز

چکیده

کلمه " نانوسلولز" عموماً به مواد سلولزی با ابعادی در محدوده نانومتری اشاره دارد. بر اساس ابعاد، عملکرد و روش­های آماده­سازی، نانوسلولزها به سه زیر شاخه اصلی طبقه­بندی می­شوند  که عبارتند از: سلولز نانوکریستال، سلولز میکرو فیبریله شده و نانو سلولزهای باکتریایی. مطالعات نشان می­دهند که با استفاده از مواد خام ارزان قیمت و قابل تجدید، امکان تولید پوشش­هایی با کارایی بالا برای مواد معمول بسته­بندی، از مواد خام ارزان قیمت و قابل تجدید وجود دارد. سلولز نانوکریستال­ها، که به راحتی از چوب سخت حاصل می­شوند، قادر هستند در قالب یک پوشش نازک روی فیلم­ها، به میزان قابل ملاحظه­ای مانع دی اکسید کربن و اکسیژن شوند. با وجود این مزایا، ویژگی­های جالبی مثل ویژگی­ های مکانیکی و نوری نیز از آن­ها شناخته شده است که می­توانند به صورت فعالیت­ های مختلف مانند مواد آنتی­اکسیدانی یا ضد­میکروبی به مواد بسته­بندی اضافه شوند و در موارد خاصی نیز در تولید پوشش­های فیلم پلاستیکی به کار روند.

کلیدواژه‌ها


عنوان مقاله [English]

Application of Cellulosic Nano Crystals in Food Packaging Films

نویسنده [English]

  • Azadeh Rashidimehr
PhD student, Department of Food Hygiene, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Iran
چکیده [English]

The term “Nano cellulose” generally refers to cellulosic material in the nanometer dimensions. Based on dimensions, performance and preparation methods, Nano celluloses are classified into three main groups: Nano crystalline cellulose (NCC), micro fibrillated cellulose (MFC) and bacterial Nano cellulose (BNC). Studies show that with the use of cheap and renewable raw materials, it is possible to produce high-performance coatings for common packaging materials. NCCs, which is easily obtained from hardwood, are capable of significantly inhibiting carbon dioxide and oxygen in the form of a thin coating on the films. Despite these advantages, interesting features such as mechanical and optical properties are also known that can be added to various packaging materials, such as antioxidant or antimicrobial agents. In certain cases, it has been used in the production of plastic film coatings.

کلیدواژه‌ها [English]

  • Nanocrystal
  • Cellulose
  • Packaging
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