Sodium O-Carboxymethyl chitosan as a novel fixative for eau de cologne

Abstract

Sodium carboxymethyl chitosan (SCM-chitosan) was prepared by O-carboxymethylation reaction with monochloroacetic acid and use as a novel fixative for eau de cologne. SCMchitosan is soluble in water but insoluble in ethyl alcohol, the optimum volume ratio between water and alcohol that still be able to soluble 0.1 percent of SCM-chitosan is 2:3. Water solubility of perfume compounds in eau de cologne affected the solubility of SCM-chitosan. The more water solubility of perfume compounds, the higher solubility of SCM-chitosan in formulation. Headspace analysis using gas chromatography is the method for evaluate fixative effect. SCMchitosan has the significant fixative effect on p-cresyl methyl ether at concentration 10%in DPG eau de colonge. The fixative efficiency can rise to 92.19 percent at the temperature of 53 oC. However the fixative effect of SCM-chitosan on benzyl alcohol eau de colonge, ethyl acetoacetate eau de colonge and 94085 floral-fruity eau de cologne needs to future investigation due to the precipitation of the systems which might be cause by incompatibility between SCM-chitosan and the aroma material.