FATİMA M ABEDA, LİNA A SAKER, AZİZA I YOUSSEF
Acta Pharmaceutica Sciencia - 2024;62(4):920-942
The essential oils (EOs) of dry leaves of Inula viscosa L. and Inula graveolens L. obtained by hydro-distillation were investigated using GC-MS within two different harvest seasons, namely summer and autumn (August and October, respectively). The results showed that the essential oils were mainly composed of monoterpenes and sesquiterpenes. Twenty-four and fifty active components, representing 63.22% and 85.41% of the essential oils, were identified in I. viscosa L., whereas, fifty-two and thirty-five active components, representing 96.46% and 58.26% of the essential oils, were identified in I. graveolens L throughout the two harvest seasons respectively. The quantitative determination of methanolic extracts of I. viscosa L. and I. graveolens L. leaves was performed, where the total phenolic contents (TPC) and total flavonoid contents (TFC) were measured. Methanolic extracts of I. viscosa L. were found to be richer in phenolic and flavonoid contents than those of I. graveolens L. in the two considered seasons.
