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

dc.contributor.authorBrasileiro, Beatriz Gonçalves
dc.contributor.authorLeite, João Paulo Viana
dc.contributor.authorCasali, Vicente Wagner Dias
dc.contributor.authorPizziolo, Virgínia Ramos
dc.contributor.authorCoelho, Olívia Gonçalves Leão
dc.date.accessioned2018-04-20T15:42:06Z
dc.date.available2018-04-20T15:42:06Z
dc.date.issued2015-04
dc.description.abstractThe 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.en
dc.description.abstractO objetivo deste estudo foi avaliar a influência das épocas de plantio e colheita no teor de polifenóis e capacidade antioxidante de Talinum triangulare cultivadas em duas estações do ano (inverno e verão) e coletadas 30 e 60 dias após plantio. A quantificação dos polifenóis foi realizada pelo método de Folin-Ciocalteu e a atividade antioxidante por DPPH. Níveis elevados de polifenóis foram obtidos na semeadura de inverno e colheita em 30 dias. A atividade antioxidante variou significativamente entre as épocas de plantio e colheita de plantas, chegando a 56,97% nos extratos das plantas produzidas no inverno e colhidas aos 30 dias após a semeadura. Os dados mostraram que a época de plantio e de colheita influenciou o teor de polifenóis e, por conseguinte, a atividade antioxidante de T. triangulare.pt-BR
dc.formatpdfpt-BR
dc.identifier.issn1807-863X
dc.identifier.urihttp://dx.doi.org/10.4025/actasciagron.v37i2.19130
dc.identifier.urihttp://www.locus.ufv.br/handle/123456789/18970
dc.language.isoengpt-BR
dc.publisherActa Scientiarum. Agronomypt-BR
dc.relation.ispartofseriesv. 37, n. 2, p. 249-255, abril/junho 2015pt-BR
dc.rightsOpen Accesspt-BR
dc.subjectPortulacaceaept-BR
dc.subjectWaterleafpt-BR
dc.subjectDPPHpt-BR
dc.subjectPolyphenolpt-BR
dc.titleThe influence of planting and harvesting times on the total phenolic content and antioxidant activity of Talinum triangulare (Jacq.) Willden
dc.typeArtigopt-BR

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