روش های کروماتوگرافی برای تشخیص مهاجرت مواد از بسته‏ بندی‏ های پلیمری

محمد‏زاده میلانی, جعفر; داودی, محمدنبی

روش های کروماتوگرافی برای تشخیص مهاجرت مواد از بسته‏ بندی‏ های پلیمری

نوع مقاله : مقاله پژوهشی

نویسندگان

¹ دانشیار و عضو هیئت علمی دانشگاه علوم کشاورزی و منابع طبیعی ساری

² دانشجوی مقطع ارشد رشته مهندسی علوم و صنایع غذایی گرایش فنّاوری مواد دانشگاه علوم کشاورزی و منابع طبیعی ساری

چکیده

اصطلاح مهاجرت، به انتشار مواد از یک محیط با غلظت بیشتر (لایه در تماس با مواد غذایی) به یک محیط با غلظت کمتر (معمولاً در سطح مواد غذایی) اشاره دارد. انتشار مواد شیمیایی از پلیمرها، یک فرایند بسیار پیچیده است که به چندین شاخص وابسته میباشد، این شاخصها عبارتند از: غلظت مواد در فیلم بسته‏بندی و ماده‏ غذایی، ماهیت غذا، دما، و مدّت زمان تماس. زمانی که یک پلاستیک در معرض دمای بالای فرایند قرار می‏گیرد یا زمانی که غذا برای مدّت طولانی ذخیره می‏شود، احتمال مهاجرت مونومر ودیمرها افزایش می‏یابد. انتقال ترکیبات شیمیایی از پلاستیک به درون غذا باعث افزایش نگرانی‏ها در خصوص تأثیرات نامطلوب محصولات‏ غذایی بر سلامت انسان شده است. نیاز به روش‏های تحلیلی مناسب برای تعیین مهاجرت از بسته ‏بندی پلاستیک به مواد غذایی حس می‏ شود. آژانس‏ های تنظیمکننده روش ‏های تحلیلی را برای برخی از مواد مهاجر مشخص کرده ‏اند. تعدادی از روش ‏های کروماتوگرافی گازی برای پلاستی سایزرهای مختلف مورد استفاده قرار گرفته است. قدم اول در آنالیز مهاجرت آنتی‏اکسیدان، تعیین سطح آنتی‏اکسیدانهای اولیه و ثانویه در پلاستیک است. کروماتوگرافی مایع با فشار بالا³ با یک آشکارساز با دیود حساس به نوربرای آنالیز آنتی‏اکسیدان‏ ها استفاده شده است. تعیین مونومر استایرن در مواد غذایی و شبیه ‏سازهای غذایی با استفاده از روش‏ های کروماتوگرافی گازی رایج است. به‏ عنوان مثال، در یک مطالعه، یک ستون HP-FFAPبرای استایرن و ستون Rtx-5 برای الیگومرها استفاده شد. این مطالعه، مروری جامع بر روش ‏های کروماتوگرافی برای تشخیص مواد مهاجر از بستهبندی‏ های پلیمر می‏ باشد.

کلیدواژه‌ها

20.1001.1.22286675.1397.9.34.7.8

عنوان مقاله [English]

Chromatographic Methods for Detection of Migrants from Packaging Polymers

نویسندگان [English]

Jafar mohammadzadeh Milani ¹
Mohammadnabi Davoodi ²

¹ Associate Professor Department of Food Science & Technology Sari Agricultural Sciences and Natural Resources University (SANRU)

² Master of Science Student, Department of Food Science & Technology Sari Agricultural Sciences and Natural Resources University (SANRU)

چکیده [English]

The term “migration” refers to the diffusion of substances from a zone of higher concentration (the food-contact layer) to one of a lower concentration (usually the food surface). Diffusion of chemical substances from polymers is a very complex process, and is dependent on several parameters, such as concentration of substances in the packaging film and food, the nature of the food, temperature, and the time period over which duration of contact occurs. The likelihood of monomer and oligomer migration increases when a plastic is exposed to high temperatures during thermal processing or when food is stored for extended periods. Transfer of chemical compounds from plastics to food has raised concerns about the potentially adverse effects of food products on human health. Appropriate analytical methods are needed to determine migration from plastic packaging into food. Regulatory agencies have specified analytical methods for some migrant materials. A number of gas chromatography methods have been used for various plasticizers. The first step in analyzing the antioxidant migration is to determine the level of primary and secondary antioxidants in the plastic. High pressure liquid chromatography with a light-sensitive diode detector was used to analyze the antioxidants. Determination of styrene monomer in food and food simulators using common gas chromatography methods. For example, in one study, an HP-FFAP column for Styrene and a Rtx-5 column for oligomers were used. This study is a comprehensive review of chromatographic methods for the detection of polymer materials from migratory materials.

کلیدواژه‌ها [English]

Packaging
Plastic
Chromatographic Methods
Safety Provisions

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