Fabrication of electrospun almond gum/PVA nanofibers as a thermostable delivery system for vanillin.
In this study, the fabrication of vanillin incorporated almond gum/polyvinyl alcohol (PVA) nanofibers through electrospinning has been investigated. Electrospinning of only almond gum was proved impossible. It was found that the aqueous solution of almond gum/PVA (80:20, concentration=7% (w/w)) containing 3% (w/w) vanillin could have successfully electrospun to uniform nanofibers with diameters as low as 77nm. According to the thermal analysis, incorporated vanillin in almond gum/PVA nanofibers showed higher thermal stability than free vanillin, making this composite especially suitable for high temperature applications. XRD and FTIR analyses proved the presence of vanillin in the almond gum/PVA nanofibers. It was also found that vanillin was dispersed as big crystallites in the matrix of almond gum/PVA nanofibers. FTIR analysis showed almond gum and PVA had chemical cross-linking by etheric bonds between COH groups of almond gum and OH groups of PVA. Also, in the nanofibers, there were no major interaction between vanillin and either almond gum or PVA.
Department of Food Science and Technology, College of Agriculture, Isfahan University of Technology, Isfahan 84156-83111, Iran. Electronic address: atefe.rezaei@ag.iut.ac.ir.
Atefe
A
Rezaei
Department of Textile Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran; Nanotechnology and Advanced Materials Institute, Isfahan University of Technology, Isfahan 84156-83111, Iran. Electronic address: tavanai@cc.iut.ac.ir.
Hossein
H
Tavanai
Department of Food Science and Technology, College of Agriculture, Isfahan University of Technology, Isfahan 84156-83111, Iran. Electronic address: ali.nasirpour@cc.iut.ac.ir.
Ali
A
Nasirpour
D001547:Benzaldehydes / Q000494:pharmacology*; D002152:Calorimetry, Differential Scanning; D016503:Drug Delivery Systems / Q000379:methods*; D057139:Nanofibers / Q000737:chemistry* / Q000648:ultrastructure; D010316:Particle Size; D053149:Plant Gums / Q000737:chemistry*; D011142:Polyvinyl Alcohol / Q000737:chemistry*; D000068181:Prunus dulcis / Q000737:chemistry*; D012996:Solutions; D017550:Spectroscopy, Fourier Transform Infrared; D013500:Surface Tension; D013696:Temperature; D013818:Thermogravimetry; D014783:Viscosity; D014961:X-Ray Diffraction
D001547:Benzaldehydes; D053149:Plant Gums; D012996:Solutions; D011142:Polyvinyl Alcohol; C100058:vanillin
Almond gum; Electrospinning; Nanocomposite; Nanofiber; PVA; Vanillin