The influence of planting and harvesting times on the total phenolic content and antioxidant activity of Talinum triangulare (Jacq.) Willd

Beatriz Gonçalves Brasileiro; João Paulo Viana Leite; Vicente Wagner Dias Casali; Virgínia Ramos Pizziolo; Olívia Gonçalves Leão Coelho

doi:10.4025/actasciagron.v37i2.19130

The influence of planting and harvesting times on the total phenolic content and antioxidant activity of Talinum triangulare (Jacq.) Willd

Beatriz Gonçalves Brasileiro Instituto Federal do Sudeste de Minas Gerais
João Paulo Viana Leite Universidade Federal de Viçosa
Vicente Wagner Dias Casali Universidade Federal de Viçosa
Virgínia Ramos Pizziolo Universidade Federal de Viçosa
Olívia Gonçalves Leão Coelho Universidade Federal de Viçosa

DOI: https://doi.org/10.4025/actasciagron.v37i2.19130

Keywords: portulacaceae, waterleaf, DPPH, polyphenol

Abstract

The purpose of this study was to evaluate the influence of planting and harvesting times on the polyphenol content and antioxidant capacity of Talinum triangulare cultivated during two different seasons (winter or summer) and harvested 30 or 60 days after seedling establishment. Polyphenol content was quantified with the Folin-Ciocalteu method, and antioxidant activity was quantified with free-radical DPPH (1,1-diphenyl-2-picrilhidrazina). The highest levels of polyphenols were obtained from winter planting and from harvesting at 30 days. Antioxidant activity differed significantly in response to variation in planting and harvesting times, reaching 56.97% in extracts of plants produced in the winter and harvested at 30 days after planting. The times of planting and harvesting markedly influenced the content of polyphenols, and thus the antioxidant activity, of T. triangulare.

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Author Biographies

Beatriz Gonçalves Brasileiro, Instituto Federal do Sudeste de Minas Gerais

Núcleo de Agroecologia, área de plantas medicinais.

João Paulo Viana Leite, Universidade Federal de Viçosa

Departamento de Bioquímica e Biologia Molecular, bioprospecção de plantas medicinais.

Vicente Wagner Dias Casali, Universidade Federal de Viçosa

Departamento de Fitotecnia, aréa de plantas medicinais e homeopatia.

Virgínia Ramos Pizziolo, Universidade Federal de Viçosa

Departamento de Bioquímica e Biologia Molecular, área de fitoquímica.

Olívia Gonçalves Leão Coelho, Universidade Federal de Viçosa

Departamento de Nutrição - acadêmica do curso de Nutrição

Published

2015-05-04

How to Cite

Brasileiro, B. G., Leite, J. P. V., Casali, V. W. D., Pizziolo, V. R., & Coelho, O. G. L. (2015). The influence of planting and harvesting times on the total phenolic content and antioxidant activity of Talinum triangulare (Jacq.) Willd. Acta Scientiarum. Agronomy, 37(2), 249-255. https://doi.org/10.4025/actasciagron.v37i2.19130

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Issue

Vol 37 No 2 (2015)

Section

Crop Production

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