Figure 1.

Effect of the simulated gastric digestion on the rosmarinic acid content. Bars represent means ± SD. Means indicated by different lowercase letters within the same dose differ significantly (p < 0.05). Abbreviations: RA—rosmarinic acid; PM—plant material; DE—dry extract; E—samples after electrolyte treatment (action of physicochemical factors); D—digested samples (action of physicochemical and biochemical factors). Dose represents the dose of applied plant material or corresponding doses of dry extract and rosmarinic acid. RA sample represents the rosmarinic acid content of untreated (before digestion) plant material.