Seasonal variation in the phenol content of Eugenia uniflora L. leaves

Resumo

Hydrolysable tannins, total phenols and flavonoids in Eugenia uniflora leaves were monthly analysed for one year. The results were correlated with climate conditions (rainfall, humidity, cloudiness and mean temperature) through chemometric methods. Principal component analysis revealed high levels of hydrolysable tannins in the rainy season, whereas flavonoids were mainly produced in the dry season. These facts suggest that climatic changes may be one of the factors affecting phenol levels in Eugenia uniflora.

Descrição

Palavras-chave

Eugenia uniflora, Pitanga, Hydrolysable tannins, Flavonoids, Seasonal variation, Eugenia uniflora, Pitangueira, Taninos hidrolisáveis, Flavonoides, Variação sazonal

Citação

SANTOS, R. M. et al. Seasonal variation in the phenol content of Eugenia uniflora L. Leaves. Revista Brasileira de Plantas Medicinais, Botucatu, v. 13, n. 1, p. 85-89, 2011.