| abstract |
A pro-fragrance compositions comprising a plurality of complexes of cucurbiturils with one or more fragrance molecule. The cucurbiturils are present as a mixture comprising at least two different cucurbiturils selected from CB[5], CB[6], CB[7] and CB[8], and the complexed fragrance molecule is released when the composition is exposed to a stimulus. Preferably the stimulus is an increase of moisture in the composition or an addition of liquid water. In other embodiments the stimulus may be a change in the ionic strength or pH of the composition, or alternatively the application of heat to the composition. Also claimed is a product comprising the pro-fragrance composition, a method for the preparation of the pro-fragrance complexes of cucurbiturils and fragrance molecules, and the use of the compositions in counteracting malodour. |