Research Article

Component Composition and Biological Activity of Various Extracts of Onosma gmelinii (Boraginaceae)

Table 2

Content of the sum of naphthoquinones in extracts from O. gmelinii.

Extract nameAmount of naphthoquinones (% ± SD)

Percolation (P)1.30 ± 0.02
Ultrasound-assisted extraction (UAE)2.98 ± 0.04
Supercritical carbon dioxide extraction (CO2-SE)39.57 ± 0.55