Thermal Triggered Release of Menthol from Different Carriers: A Comparative Study

Abstract

The design of appropriate thermally responsive fragrance carrier systems is of significant importance for the application of fragrance in the food and tobacco industries. In this study, we investigate the potential of sorbitan monostearate and guar gum for the stabilization of menthol under ambient conditions and the thermally-induced release of menthol. Our results show that the sorbitan monostearate carrier could well stabilize the menthol for at least up to 15 days with neglectable menthol loss due to the favorable binding of menthol on the sorbitan monostearate carrier. In addition, rapid and controlled release of menthol could take place at a temperature of 80 °C in the sorbitan monostearate carrier system. As a comparison, guar gum could not stabilize menthol as a result of its poor compatibility. Our results suggest that sorbitan monostearate can be an ideal carrier material for the support of fragrance. In addition, our results also provide a useful guide for the tailored design of thermally responsive fragrance carriers.

Self-Assembly of Soluplus in Aqueous Solutions: Characterization and Prospectives on Perfume Encapsulation

“…Since perfume accords used in homecare or cosmetics industry can be composed of dozens to hundreds of PRMs and essential oils having different hydrophobicities and molecular structures, a polymer able to interact with molecules within an ample range of hydrophobicity is needed. It is noteworthy to mention the tendency of the market in recent years, to move not only toward more environmentally friendly technologies for perfume encapsulation but also toward “smart” materials where the release of active can be triggered by external stimuli. − In this sense, Soluplus is interesting because, besides the fact that the presence of VCL can potentially improve its biodegradability profile, , it is also thermoresponsive , possibly due to the fact that PVCL is thermosensitive, exhibiting a lower critical solution temperature (LCST) of 30–34 °C. Soluplus at low concentrations in water is known to self-assemble into micellar structures and has a critical micelle concentration (CMC) of 7.6 mg/L .…”