Nano-Fragrance with pH-Sensitive Release Property for Improvement of Central Nervous System

Fragrance has the function of nerve regulation and is widely used in aromatic therapy. However, the rapid release of fragrance can cause discomfort in the body and have side effects. Besides, fragrance is still released when not in use, which can reduce the service life of fragrance products and limit their application. Herein, cationic nanoparticles loaded with linalool were prepared and then adhered on the silk. The fragrance-encapsulated nanoparticles have pH-sensitive release property. Linalool was promoted to release in acidic condition and was suppressed to release in alkaline condition. In addition, the nano-fragrance with controlled release properties had regulatory effects on the central nervous system. It had the effect of relieving stress according to the open field tests. Besides, it increased the expression levels of dopamine, acetylcholine and GABA according to results of liquid chromatographmass spectrometer. Therefore, these cationic nano-fragrance with pH-sensitive release property have the potential for aromatherapy.