Bioactive Nanoparticles The Complexation of Odorant Compounds with a-and b-Cyclodextrin

Rivis, Adrian; Hadaruga, Nicoleta Gabriela; Hadaruga, Daniel Ioan; Trasca, Teodor; Druga, Marioara; Pînzaru, Iulia

Adrian Rivis, Nicoleta Gabriela Hadaruga, Daniel Ioan Hadaruga, Teodor Trasca, Marioara Druga, Iulia Pînzaru

Bioactive Nanoparticles The Complexation of Odorant Compounds with a-and b-Cyclodextrin

Abstract:

This paper presents the molecular encapsulation of some odorant compounds in a- or b-cyclodextrin. The molecular encapsulation of hydrophobic compounds in these natural cyclic oligosaccharides provides powders at nano scale with very good protection against degradative environmental factors (temperature, light, moisture, air/oxygen), controlled release of the bioactive compounds (long life bio-action), easy handling of powdery complexes (containing bioactive liquid compounds), higher water soluble bioactive specialties (containing hydrophobic biocompounds). From this point of view, some odorant bionanoparticles with enhanced bioactive properties (protection against oxidation, enhanced olfactive and long life smelling properties) and possible applications in cosmetic and toiletries were obtained and characterized. Both limonene and linalool enantiomers (d and l), dl-linalyl acetate, b-caryophyllene, benzaldehyde, g-decalactone, a-ionone, menthol, vanillin, and hydroxycitronellal were used as guest compounds. The encapsulation was achieved by crystallization from the ethanol-water solution. The GC-MS was used for odorant compound analysis and TG for nanoparticle analysis. a- Cyclodextrin release the odorant compounds earlier then the b-cyclodextrin, as indicated by thermogravimetric analysis. The benzaldehyde, menthol and vanillin were decomplexed at lower temperatures then 70°C and the majority of compounds were complexed at 1:1 stoichiometry ratio.

Keywords:
cyclodextrins; odorant compounds; nanoparticles; molecular encapsulation; gas; chromatography-mass spectroscopy; thermogravimetry

Issue: 2008, Volume 59, Issue 2

Pages: 149-153

Publication date: 2008/3/9

https://doi.org/10.37358/RC.08.2.1723

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This article is published under the Creative Commons Attribution 4.0 International License

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