مطالعه تأثیر دما و حضور نانوتقویت کننده بر مهاجرت آنتی اکسیدان TBHQ از فیلم نانوکامپوزیت فعال برپایۀ پلی لاکتیک اسید

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار گروه علوم و صنایع غذایی دانشکدۀ کشاورزی دانشگاه ارومیه

2 دانشیار گروه علوم و صنایع غذایی دانشکدۀ کشاورزی دانشگاه تبریز

3 استادیار گروه علوم و صنایع غذایی دانشکدۀ کشاورزی دانشگاه تبریز

4 استاد گروه شیمی پلیمر دانشکدۀ شیمی دانشگاه تبریز

5 استاد 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

موضوعات


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 Almasi 1
  • Babak Ghanbarzadeh 2
  • Jalal Dehghannya 3
  • Ali Akbar Entezami 4
  • Asghar Khosrowshahi Asl 5
1 Assistant Professor of Food Science and Technology, Faculty of Agriculture, University of Urmia
2 Associate Professor of the Department of Food Science and Technology, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
3 Assistant Professor of the Department of Food Science and Technology, Faculty of Agriculture, University of Tabriz
4 Professor of the Department of Polymer Chemistry, Faculty of Chemistry, University of Tabriz
5 Professor 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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