Research the effect of some preservation factors and chemical composition analysis of Rosemary essential oil in Lam Dong province, Vietnam

Abstract

Study on the chemical composition of rosemary essential oil selected by mass spectrometry. Rosemary essential oils are concentrated volatile aromatic compounds mainly produced by hydrodistillation from rosemary (Rosmarinus officinalis). Almost all samples in the area contain some common characteristic ingredients, such as α-pinene (25.99%), Eucalyptol (17.989%), bicyclo [3.1.1] hept-3-en-2 -one (10.78%), Caryophyllene (4.273%), Endo-Borneol (3.823%), Bornyl acetate (5.023%). The results show that Vietnamese rosemary essential oil has aromatic compounds with a high rate. However, there are clear differences in yield, composition, and the number of identified ingredients. Optimize the process of preserving essential oils in normal, dark, 4°C, 45°C conditions. The composition of essential oils is unstable, always changing with the growth time of the plants, changing according to climatic conditions, extraction methods, leading to different oil content. Thereby opening up new potential in the application of high-value aromatic compounds in frankincense essential oil in cosmetics, perfume and pharmaceutical products.