Fabrication and characterization of PVA/WPI nanofibers containing probiotics using electrospinning technique
محل انتشار: مجله علوم نانو، دوره: 10، شماره: 3
سال انتشار: 1402
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 115
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شناسه ملی سند علمی:
JR_NAMJ-10-3_006
تاریخ نمایه سازی: 11 تیر 1402
چکیده مقاله:
Objective(s): This study aimed to evaluate the viability of encapsulated probiotics using electrospinning technique. Specifically, the study focused on polyvinyl alcohol-whey protein isolate nanofibers (PVA/WPI) containing Bifidobacterium bifidum. These nanofibers have potential applications in active food packaging to improve food safety and extend shelf life, as well as in medical and pharmaceutical fields.Materials and Methods: PVA/WPI nanofibers were electrospun in varying ratios (ranging from ۱۰۰:۰۰ to ۵۰:۵۰) and evaluated for their morphology, mechanical properties, FT-IR and DSC characteristics. B. bifidum was also encapsulated in the optimized PVA/WPI nanofibers to assess their encapsulation efficiency and viability, and the antimicrobial properties of the nanofibers were determined using the disk diffusion method.Results: All prepared nanofibers displayed a diameter range of ۱۸۶.۴۲-۶۱۲.۵ nm, with an inverse relationship between WPI ratio and nanofiber diameter. The PVA/WPI nanofiber with a ratio of ۶۰:۴۰ was found to be the most favorable. DSC analysis showed that adding WPI decreased thermal stability, and the enthalpy of endothermic peaks decreased in nanofibers containing B. bifidum. Mechanical evaluation revealed that adding WPI reduced tensile strength and elongation at break, without significant effects from B. bifidum (P>۰.۰۵). Bacterial encapsulation efficiency was ۸۰.۵۸%. Probiotic nanofibers exhibited antimicrobial properties against Listeria monocytogenes (۱۱.۰۰±۰.۳۷ mm) and Escherichia coli (۹.۷۱±۰.۰۶ mm).Conclusion: According to the obtained results, the optimized PVA/WPI nanofiber (۶۰:۴۰) contained suitable morphological, mechanical and thermal characteristics with the highest encapsulation efficiency in regards to B. bifidum (>۸۰%). Probiotics-containing PVA/WPI nanofibers are a suitable platform for medical applications and food industry packaging due to their antimicrobial properties.
کلیدواژه ها:
نویسندگان
Zahra Panahi
Department of Food Hygiene and Aquaculture, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran
Mohammad Mohsenzadeh
Department of Food Hygiene and Aquaculture, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran
Maryam Hashemi
Nanotechnology Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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