Abstract:

In order to improve the solubility in water and stability of essential oil from Rosa damascena Miller, the essential oil was included with β-cyclodextrin(β-CD) by saturated water solution-stirring method. The inclusion conditions were optimized through orthogonal test, and the inclusion compound was characterized by thin-layer chromatography (TLC), gas chromatography-mass spectrometry (GC-MS), Fourier transform infrared (FTIR) spectrometry and differential scanning calorimetry (DSC). The results showed that the optimal inclusion conditions of essential oil from Rosa damascena Miller were as following: mass ratio of essential oil to β-CD 1:10, inclusion temperature 60 ℃, and inclusion time 2 h. The inclusion ratio of essential oil was up to 80% under above conditions. The inclusion compound retained the main characteristic components of the essential oil and obviously improved its solubility in water and stability. This β-CD inclusion compound of essential oil from Rosa damascena Miller can be used as a solid immediate for the development of functional foods.

Key words: essential oil, Rosa damascena Miller, β-cyclodextrin, inclusion