制备静电纺丝杏仁胶/聚乙烯醇纳米纤维作为香草醛的热稳定递送系统。
Fabrication of electrospun almond gum/PVA nanofibers as a thermostable delivery system for vanillin.
作者信息
Rezaei Atefe, Tavanai Hossein, Nasirpour Ali
机构信息
Department of Food Science and Technology, College of Agriculture, Isfahan University of Technology, Isfahan 84156-83111, Iran.
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.
出版信息
Int J Biol Macromol. 2016 Oct;91:536-43. doi: 10.1016/j.ijbiomac.2016.06.005. Epub 2016 Jun 3.
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.
在本研究中，对通过静电纺丝制备香草醛掺入杏仁胶/聚乙烯醇（PVA）纳米纤维进行了研究。结果表明，仅对杏仁胶进行静电纺丝是不可能的。研究发现，含有3%（w/w）香草醛的杏仁胶/PVA（80:20，浓度=7%（w/w））水溶液能够成功静电纺丝成直径低至77nm的均匀纳米纤维。热分析表明，杏仁胶/PVA纳米纤维中掺入的香草醛比游离香草醛具有更高的热稳定性，这使得该复合材料特别适用于高温应用。XRD和FTIR分析证明了香草醛存在于杏仁胶/PVA纳米纤维中。还发现香草醛以大晶粒的形式分散在杏仁胶/PVA纳米纤维的基质中。FTIR分析表明，杏仁胶和PVA通过杏仁胶COH基团与PVA OH基团之间的醚键发生化学交联。此外，在纳米纤维中，香草醛与杏仁胶或PVA之间没有主要相互作用。
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