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مطالعه تأثیر دما و حضور نانوتقویت کننده بر مهاجرت آنتی اکسیدان TBHQ از فیلم نانوکامپوزیت فعال برپایۀ پلی لاکتیک اسید | ||
مهندسی بیوسیستم ایران | ||
مقاله 4، دوره 46، شماره 3، مهر 1394، صفحه 235-243 اصل مقاله (460 K) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22059/ijbse.2015.56864 | ||
نویسندگان | ||
هادی الماسی1؛ بابک قنبرزاده* 2؛ جلال دهقان نیا3؛ علی اکبر انتظامی4؛ اصغر خسروشاهی اصل5 | ||
1استادیار گروه علوم و صنایع غذایی دانشکدۀ کشاورزی دانشگاه ارومیه | ||
2دانشیار گروه علوم و صنایع غذایی دانشکدۀ کشاورزی دانشگاه تبریز | ||
3استادیار گروه علوم و صنایع غذایی دانشکدۀ کشاورزی دانشگاه تبریز | ||
4استاد گروه شیمی پلیمر دانشکدۀ شیمی دانشگاه تبریز | ||
5استاد گروه علوم و صنایع غذایی دانشکدۀ کشاورزی دانشگاه ارومیه | ||
چکیده | ||
در این پژوهش فیلم نانوکامپوزیت فعال بر پایۀ پلیلاکتیکاسید (PLA) حاوی آنتیاکسیدان ترت بوتیل هیدروکینون (TBHQ) تولید شد. بهمنظور تهیۀ فیلم فعال و فیلم نانوکامپوزیت فعال PLA، به ترکیب این بیوپلیمر به ترتیب TBHQ (3درصد وزنی) و مخلوط TBHQ (3درصد وزنی) و نانوفیبر سلولز اصلاحشده (MCNF) (8درصد وزنی) اضافه شد. مطالعۀ رهایش آنتیاکسیدان نشان داد که روند رهایش TBHQ به سیمولانت اتانول 95درصد با افزودن MCNF کاهش مییابد. حضور MCNF اثر افزایشی دما بر روند رهایش را کاهش داد. با افزایش دما از C°4 به C°40، ضریب انتشار برای فیلم PLA-TBHQ و PLA-MCNF-TBHQ به ترتیب از 75/6 و cm2.s-1 8-10×34/4 به 85/19 و cm2.s-18-10×49/8 افزایش یافت. همچنین حضور MCNF موجب افزایش انرژی فعالسازی انتشار (Ea) در فیلم نانوکامپوزیت فعال شد. | ||
کلیدواژهها | ||
پلیلاکتیکاسید؛ فیلم نانوکامپوزیت فعال؛ نانوفیبر سلولز اصلاحشده؛ نرخ رهایش | ||
عنوان مقاله [English] | ||
Studying the effect of temperature and nanoreinforcement on the migration of TBHQ antioxidant from Poly(lactic acid) based nanocomposite active film | ||
نویسندگان [English] | ||
Hadi Almasi1؛ Babak Ghanbarzadeh2؛ Jalal Dehghannya3؛ Ali Akbar Entezami4؛ Asghar Khosrowshahi Asl5 | ||
1Assistant Professor of Food Science and Technology, Faculty of Agriculture, University of Urmia | ||
2Associate Professor of the Department of Food Science and Technology, Faculty of Agriculture, University of Tabriz, Tabriz, Iran | ||
3Assistant Professor of the Department of Food Science and Technology, Faculty of Agriculture, University of Tabriz | ||
4Professor of the Department of Polymer Chemistry, Faculty of Chemistry, University of Tabriz | ||
5Professor of the Department of Food Science and Technology, Faculty of Agriculture, University of Urmia | ||
چکیده [English] | ||
A Poly(lactic acid) (PLA) based nanocomposite active packaging has been developed for the controlled release of tert-butylhydroquinone (TBHQ) antioxidant. PLA based active films were loaded with TBHQ (3%wt) or mixture of modified cellulose nanofiber (MCNF) (8%wt) and TBHQ (3%wt) to obtain active and nanocomposite active films, respectively. Release studies indicated that the release rate of TBHQ in 95% ethanol simulant decreased by the addition of MCNF. Faster and higher release of TBHQ occurred at 40 °C according to Arrhenius law. However, the presence of MCNF diminished the increasing effect of temperature on the release rate. The diffusion coefficient (D) for PLA-TBHQ and PLA-MCNF-TBHQ films increased from 6.75 and 4.34 ×10-8 cm2.s-1 to 19.85 and 8.49 ×10-8 cm2.s-1 respectively by increasing temperature from 4 °C to 40 °C. Also the presence of MCNF caused to increase in activation energy of naocomposite active film. | ||
کلیدواژهها [English] | ||
Poly(lactic acid), nanocomposite active packaging, modified cellulose nanofiber, release rate | ||
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