The essential oils of Salvia ovalifolia, S. procurrens and uliginosa were obtained by hydrodistillation analyzed gas chromatography-mass spectrometry. three species displayed very low amounts oils, consisting a few sesquiterpenes, aliphatic compounds such as aldehydes long-chain fatty acids. From the leaves uliginosa, an exudate was which presented diterpene icetexone major component. evaluated...

the essential oil obtained by hydrodistillation of the aerial parts of rosa damascenea mill. was analyzed by gc/ms. the yield of the oil was 0.16% (v/w). among twenty five components, eight components, representing 99.98% of the oil, were characterized. nonadecane (39.73%), heneicosane (32.38%), docosane (7.34%), citronellol (6.14%) and 9-nonadecene (5.69%), were found to be major constituents.

BACKGROUND Hydrodistillation has been traditionally used to extract volatile fraction in traditional Chinese medicine. However, with the development of Soxhlet extraction (SE), microwave (MW), ultrasound (US), and cold maceration (CM), hydrodistillation (HD) is being replaced to meet some practical requirements. In this study, we investigated the effect of the five methods on the volatile fract...