Research Article
Estimation of the Content of Selected Active Substances in Primary and Secondary Herbal Brews by UV-VIS and GC-MS Spectroscopic Analyses
Figure 6
Content of essential oil in the postbrewing (after primary brewing) plant material (% ). Control—content of essential oil in the primary material. Data are shown as mean ± SD. Different letters (a, b, c, etc.) show a significant difference with .