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Seasonal Variation in the Content of Condensed Tannins in Leaves of Xylopia emarginata Mart. (Annonaceae) in Response to Phenology and Climate

Patrícia Conceição Medeiros, Yule Roberta Ferreira Nunes, Juliana Pimenta Cruz, Dayse Marcielle de Souza, Marly Antonielle à Vila, Franciellen Morais-Costa, Sônia Ribeiro Arrudas, Viviane de Oliveira Vasconcelos, Thallyta Maria Vieira and Ana Paula Venuto Moura

Journal of Agricultural Science, 2024, vol. 13, issue 10, 142

Abstract: Variations in the concentrations of plant secondary metabolites can occur due to the phenological stages of the plants, combined with environmental variations. Plants rich in tannins are used in folk medicine for different purposes. Xylopia emarginata Mart. (Anonaceae)-“Pindaíba” has been used to treat skin edema, bronchitis and malaria. We evaluated variations in condensed tannin (CTs) contents in relation to phenological variables in leaves of Xylopia emarginata during one year. The study took place in a Vereda in northern Minas Gerais State, Brazil. Monthly phenological observations as well as quantifications of the contents of condensed leaf tannins in ethanol and aqueous extracts were performed. The production of X. emarginata leaves occurred throughout the study, with greater budding and leaf fall in the dry season. Phenological observations were correlated with CT levels and climatic data of precipitation and temperature. There was a significant correlation (p < 0.05) between fruiting and CT levels in the extracts, which were higher during the dry season, 13.2% in the ethanol extract and 7.8% in the aqueous extract.

Date: 2024
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