Abstract: Co-products from the juice processing of guava (CG), mango (CM) and barbados cherry (CB) were investigated with a view to their exploitation as a potential source of natural antioxidants. The ethanolic extracts were analyzed for total extractable phenolic content (TEP), DPPH radical scavenging activity (RSA-DPPH), ferric reducing antioxidant power (FRAP) and antioxidant activity in relation to the β-carotene/ linoleic acid system. The TEP levels in the CG, CM and CB extracts were (24.15 ± 1.59), (44.18 ± 1.73) and (49.21 ± 3.70) mg GAE/g extract, respectively. The CM extract showed higher DPPH, FRAP and antioxidant activity in the β-carotene/linoleic acid system. The data revealed a positive linear correlation between TEP, RSA-DPPH and FRAP (r2 = 0.85 − 0.98); however, the β-carotene/linoleic acid system (r2 = 0.01 − 0.26) shows low correlation with the TEP levels and other assessment systems. The results suggest that co-products generated from the juice processing of the studied fruit have promising use as a natural source of antioxidants.
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Araújo, K.L.G.V.; Magnani, M.; Nascimento, J.A.; Souza, A.L.; Epaminondas, P.S.; Souza, A.L.; Queiroz, N.; Souza, A.G. Antioxidant Activity of Co-Products from Guava, Mango and Barbados Cherry Produced in the Brazilian Northeast. Molecules 2014, 19, 3110-3119.
Araújo KLGV, Magnani M, Nascimento JA, Souza AL, Epaminondas PS, Souza AL, Queiroz N, Souza AG. Antioxidant Activity of Co-Products from Guava, Mango and Barbados Cherry Produced in the Brazilian Northeast. Molecules. 2014; 19(3):3110-3119.
Araújo, Kassandra L.G.V.; Magnani, Marciane; Nascimento, Jaqueline A.; Souza, Alline L.; Epaminondas, Poliana S.; Souza, Antônia L.; Queiroz, Neide; Souza, Antonio G. 2014. "Antioxidant Activity of Co-Products from Guava, Mango and Barbados Cherry Produced in the Brazilian Northeast." Molecules 19, no. 3: 3110-3119.