Abstract
In the area of functional flavors and fragrances, the effective aroma and fragrance lasting are long-term challenges. To achieve this goal, an effective way is forming and cutting-off fragile covalent bonds of pro-fragrances along with controlled release of fragrances. We here report a new family of nanocarrier-based pro-fragrances, which have a high affinity to silk textiles and papers. The new pro-fragrances were prepared by using polyhedral oligomeric silsesquioxane (POSS) with perfume aldehydes, in which the formed acetal group as a linker that serves to bind the fragrance molecules allowed slow release of aldehyde molecules via hydrolysis reactions. The controllable release of volatile aldehydes was investigated in aqueous suspensions by headspace solid-phase micro-extraction analysis in combination with gas chromatography. The results show that the release of fragrances from this pro-fragrance system with headspace concentrations are 5–10 times slower than the free aldehydes.
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