Enzymatic degradation of Poly (ε-Caprolactone) and Starch blends bontaining SiO۲ nanoparticle by Amyloglucosidase and α-Amylase
محل انتشار: مجله بین المللی ابعاد نانو، دوره: 5، شماره: 6
سال انتشار: 1393
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 112
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شناسه ملی سند علمی:
JR_IJND-5-6_006
تاریخ نمایه سازی: 24 تیر 1401
چکیده مقاله:
The aims of the study were to investigate the effect of poly(ε -caprolactone) (PCL) and nano- SiO۲ within the thermoplastic starch (TPS) blends on the rate and extent of starch enzymatic hydrolysis using enzymes α-amylase and amyloglucosidase. The results of this study have revealed that blends with nano-SiO۲ content at ۶ wt% exhibited a significantly reduced rate and extent of starch hydrolysis. The results suggest that this may have been attributed to interactions between starch and nano- SiO۲ that further prevented enzymatic attack on the remaining starch phases within the blend. The total solids that remained after ۶۰۰۰ min were ۵۲ wt. % (TPS: PCL); ۵۹ wt.% (TPS: PCL: ۲% nano-SiO۲); ۶۴ wt.% (TPS: PCL: ۴% nano-SiO۲); ۶۷ wt.% (TPS: PCL: ۶% nano-SiO۲). The rate of glucose production from each nanocomposite substrates was most rapid for the substrate without nano- SiO۲ and decreased with the addition of nano- SiO۲, for TPS: PCL blend (۳۷۴ μg/ml.h), ۲۴۶ μg/ml.h (TPS: PCL: ۲% nano- SiO۲), ۲۱۷ μg/ml.h (TPS: PCL: ۴% nano- SiO۲) and ۱۹۹ μg/ml.h for (TPS: PCL: ۶% nano- SiO۲). Enzymatic degradation behaviour of TPS: PCL: nano- SiO۲ was based on the determinations of Water resistance, Weight loss and the Reducing sugars.
کلیدواژه ها:
نویسندگان
Z. Abbasi
Young Researchers and Elite Club, Ilam Branch, Islamic Azad University, Ilam, Iran.
E. Rezaee Nezhad
Department of Chemistry, Payame Noor University, PO BOX ۱۹۳۹۵-۴۶۹۷ Tehran, Iran.
V. Moradi
Young Researchers and Elite Club, Ilam Branch, Islamic Azad University, Ilam, Iran.
F. Moradi
Young Researchers and Elite Club, Ilam Branch, Islamic Azad University, Ilam, Iran.
O. Ahmadi
Young Researchers and Elite Club, Ilam Branch, Islamic Azad University, Ilam, Iran.
A. Homafar
Department of Chemistry, Eyvan-e-Gharb Branch, Islamic Azad University, Eyvan, Iran.