Chemical Analysis and Evaluation of Antioxidant, Antimicrobial, and Photoprotective Activities of Schinopsis brasiliensis Engl. (Anacardiaceae)

Table 3

The content of total phenols (FT), flavonoid (F), tannins (T), and antioxidant activity were determined by DPPH (EC₅₀) and β-carotene (% AA).

Sample	Results			Antioxidant activity
	TP; (mgGAE/g)	F; (mgRE/g)	T; (mgTAE/g)	DPPH; (EC50)	β-Carotene; (% AA)
Sb-EtOH	624.6 ± 0.42	132.4 ± 1.76	255.8 ± 2.06	1.46 ± 0.07	60.81 ± 0.67
Ascorbic acid	—	—	—	0.64 ± 0.22	7.50 ± 2.12
BHA	—	—	—	1.22 ± 0.43	97.49 ± 0.76
BHT	—	—	—	8.16 ± 7.06	99.10 ± 1.14

GAE: gallic acid equivalent; RE: rutin equivalent; TAE: tannic acid equivalent. The IC₅₀ values were obtained by linear regression with 95% confidence interval. IC₅₀ is defined by the concentration sufficient to obtain 50% of the maximum estimated effect at 100%. Values are expressed as mean ± SD .