Journal
NANOMATERIALS
Volume 8, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/nano8100793
Keywords
cyclodextrin; electrospinning; nanofiber; inclusion complex; citral; enhanced water solubility; high thermal stability; longer shelf-life
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Funding
- Scientific and Technological Research Council of Turkey (TUBITAK)-Turkey [213M185]
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Here, we report a facile production of citral/cyclodextrin (CD) inclusion complex (IC) nanofibers (NFs) from three types of CDs (hydroxypropyl-beta-cyclodextrin (HP beta CD), hydroxypropyl-gamma-cyclodextrin (HP gamma CD), and methylated-beta-cyclodextrin (M beta CD)) by an electrospinning technique without the need of any polymeric carrier matrix. Self-standing nanofibrous webs of citral/CD-IC nanofibers (citral/CD-IC-NF) with uniform fiber morphology have been successfully electrospun from aqueous solutions of citral/CD-IC. Thanks to the inclusion complex formed with CDs, the efficient preservation of citral (up to similar to 80%) in citral/CD-IC-NFs was observed. In addition, the citral/CD-IC-NFs have shown similar to 50% preservation of citral for 15 days at room temperature even though citral has a highly volatile nature. The enhanced thermal stability of citral (similar to 100-300 degrees C) in citral/CD-IC-NFs compared to pure citral (similar to 50-165 degrees C) has been observed. Moreover, citral/CD-IC-NFs tended to disintegrate in water very quickly. To summarize, citral was efficiently encapsulated in citral/CD-IC-NFs, and these citral/CD-IC-NFs have been shown to be fast dissolving. In citral/CD-IC-NFs, citral/CD-ICs have enhanced water solubility of citral along with high-temperature stability and a longer shelf-life.
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