بررسی خواصی فیزیکوشیمیایی و مکانیکی فیلم‌های زیست‌تخریب‌پذیر همی‌سلولز- ژلاتین

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشیار، گروه علوم و صنایع‌غذایی، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان، ملاثانی، ایران

2 استادیار، گروه علوم و صنایع‌غذایی، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان، ملاثانی، ایران.

3 کارشناس، گروه علوم و صنایع‌غذایی، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان، ملاثانی، ایران

چکیده

در این پژوهش، فیلم‌های زیست‌تخریب‌پذیر همی‌سلولز-ژلاتین با نسبت‌های متفاوت تولید و خواص فیزیکوشیمیایی و مکانیکی آنها مطالعه شد. در نسبت 25/75، همی‌سلولز/ ژلاتین، فیلم‌های‌ ترکیبی تولید شده، در مقایسه با دیگر فیلم‌ها، کمترین نفوذ‌پذیری به بخارآب (g/msPa10-10×59/4 )، کمترین حلالیت در آب (995/29 درصد)، کمترین مقاومت کششی (83/1 مگاپاسکال) و بیشترین درصد کشش در نقطه‌ی پارگی (85/203 درصد) را از خود نشان دادند. همچنین در مقایسه‌ی فیلم‌های ترکیبی تهیه شده با فیلم شاهد (فیلم ژلاتینی، HGa)، مشاهده شد که با افزودن 25 درصد همی‌سلولز میزان حلالیت در آب و همچنین مقاومت کششی فیلم‌ها، کاهش و درصد کشش در نقطه‌ی پارگی دچار افزایش زیادی شد و پس از آن با افزایش نسبت همی‌سلولز، حلالیت و مقاومت کششی رو به افزایش گذاشته و از سوی دیگر درصد کشش در نقطه‌ی پارگی کاهش یافت. با توجه به نتایج به‌دست آمده به نظر می‌رسد ترکیب همی‌سلولز-ژلاتین، مخلوطی مناسب با ویژگی‌هایی قابل توجه برای تولید فیلم‌های زیست‌تخریب‌پذیر ‌باشد.  

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Characterization of Physicochemical and Mechanical Properties of Biodegradable Hemicellulose-Gelatin Films

نویسندگان [English]

  • Hassan Barzegar 1
  • Mohammad Amin Mehrnia 2
  • Mina Hassanzadeh 3
1 Associate Professor, Department of Food Science and Technology, Agricultural Sciences and natural Resources University of Khuzestan, Molasani, Iran
2 Assistant Professor, Department of Food Science and Technology, Agricultural Sciences and natural Resources University of Khuzestan, Molasani, Iran
3 MSc. Student, Professor, Department of Food Science and Technology, Agricultural Sciences and natural Resources University of Khuzestan, Molasani, Iran
چکیده [English]

In this study, biodegradable hemicellulose-gelatin blend films with different ratios were developed to examine their physicochemical and mechanical properties. Films prepared with 25/75 hemicellulose/ gelatin In the ratio of 25/75, hemicellulose / gelatin, produced composite films, in comparison with other films showed the lowest water vapor permeability (4.59× 10-10g/msPa), water solubility (29.995%) and tensile strength (1.83 Mpa) and highest elongation at break (203.85%). Slight increase in hemicellulose concentration increased tensile strength, water solubility and water vapor permeability and lowered elongation at break comparing to control and further increase in hemicellulose rose water solubility and tensile strength and elongation at break decreased. Also, comparing the composite films with control film (gelatin film, HGa), it was observed that by adding 25% hemicellulose, the water solubility and the tensile strength of the films decreased and elongation at break increased. Afterwards with increasing ratio of hemicellulose solubility and tensile strength increased and on the other hand, elongation at break decreased. According to the results, it seems that the combination of hemicellulose-gelatin is a suitable mixture with significant properties for the production of biodegradable films.

کلیدواژه‌ها [English]

  • Hemicellulose
  • Sugarcane Bagasse
  • gelatin
  • biodegradable
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