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Total Phenolic Content and Antioxidant Activity of Some Malvaceae Family Species
Universidade Federal de Campina Grande, Unidade Acadêmica de Ciências da Vida, CEP 58900-000, Cajazeiras, PB, Brazil
Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba, CEP 58051-970, João Pessoa-PB, Brazil
Departamento de Fisiologia e Patologia, Centro de Ciências da Saúde, Universidade Federal da Paraíba, CEP 58059-900, João Pessoa-PB, Brazil
* Author to whom correspondence should be addressed.
Received: 16 August 2012; in revised form: 10 September 2012 / Accepted: 24 September 2012 / Published: 26 October 2012
Abstract: The antioxidant activity of four species of the Malvaceae family (Sidastrum micranthum (A. St.-Hil.) Fryxell, Wissadula periplocifolia (L.) C. Presl, Sida rhombifolia (L.) E. H. L and Herissantia crispa L. (Brizicky)) were studied using the total phenolic content, DPPH radical scavenging activity and Trolox equivalent antioxidant capacity (TEAC) assays. The antioxidant activity of the crude extract, phases and two isolated flavonoids, kaempferol 3,7-di-O-α-l-rhamnopyranoside (lespedin) and kaempferol 3-O-β-d-(6''-E-p-coumaroil) glucopyranoside (tiliroside) was determined. The results showed that there is a strong correlation between total polyphenol contents and antioxidant activity of the crude extract of Sidastrum micranthum and Wissadula periplocifolia; however, this was not observed between Sida rhombifolia and Herissantia crispa. The ethyl acetate (EaF) phase showed the best antioxidant effect in the total phenolics, DPPH and TEAC assays, followed by the chloroform (CfF) phase, in most species tested. Lespedin, isolated from the EaF phase of W. periplocifolia and H. crispa may not be responsible for the antioxidant activity due to its low antioxidant activity (IC50: DPPH: 1,019.92 ± 68.99 mg/mL; TEAC: 52.70 ± 0.47 mg/mL); whereas tiliroside, isolated from W. periplocifolia, H. crispa and S. micrantum presented a low IC50 value (1.63 ± 0.86 mg/mL) compared to ascorbic acid in the TEAC assay.
Keywords: Malvaceae family; antioxidant activity; total phenolic content; DPPH assay; TEAC assay
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Fernandes de Oliveira, A.M.; Sousa Pinheiro, L.; Souto Pereira, C.K.; Neves Matias, W.; Albuquerque Gomes, R.; Souza Chaves, O.; Vanderlei de Souza, M.F.; Nóbrega de Almeida, R.; Simões de Assis, T. Total Phenolic Content and Antioxidant Activity of Some Malvaceae Family Species. Antioxidants 2012, 1, 33-43.
Fernandes de Oliveira AM, Sousa Pinheiro L, Souto Pereira CK, Neves Matias W, Albuquerque Gomes R, Souza Chaves O, Vanderlei de Souza MF, Nóbrega de Almeida R, Simões de Assis T. Total Phenolic Content and Antioxidant Activity of Some Malvaceae Family Species. Antioxidants. 2012; 1(1):33-43.
Fernandes de Oliveira, Adriana M.; Sousa Pinheiro, Lilian; Souto Pereira, Charlane K.; Neves Matias, Wemerson; Albuquerque Gomes, Roosevelt; Souza Chaves, Otemberg; Vanderlei de Souza, Maria F.; Nóbrega de Almeida, Reinaldo; Simões de Assis, Temilce. 2012. "Total Phenolic Content and Antioxidant Activity of Some Malvaceae Family Species." Antioxidants 1, no. 1: 33-43.