Figure 7.

In vitro DPPH (a), ABTS (b), and FRAP (c) antioxidant activities of extracts from callus cultures of S. xanthocarpum grown under different monochromatic lights conditions after 35 days of cultivation. DPPH is expressed as % of radical scavenging activity (RSA). ABTS and FRAP are expressed in μM Trolox C equivalent antioxidant capacity (TEAC). The same volume of extraction solvent was used as blank. Data are expressed in terms of mean ± SD of at least three independent experiments. Different letters indicate significant differences between conditions (p < 0.05).