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DPPH scavenging activity of Costa Rican guava crude extract, and hexane, chloroform, ethyl acetate, and n-butanol fractions. Values are expressed as means ±95% confidence intervals (n = 8) of Trolox equivalent antioxidant capacity (TEAC) (μmol of Trolox per gram of dry extract). Bars with different letters (a–e) are significantly (p < 0.05) different.
