Two benzooxepin types isolated from the stem bark of Bauhinia aculeata L. (Fabaceae) have been identified as bauhiniastin 4 (1) and pacharin (2). The structure of both compounds have been elucidated based on its spectroscopic data, including UV, 1D and 2D NMR, and HREISMS spectra. Compounds 1 – 2 were evaluated for their radical scavenging against 2,2-diphenyl-1-picrylhydrazyl (DPPH), showing t...

A espécie vegetal Parkinsonia aculeata, pertencente à subfamília Caesalpiniaceae da família Fabaceae, é uma árvore de porte arbustivo-arbóreo oriunda regiões semiáridas América tropical, caracteriza-se como pequena caducifólia espinhosa que apresenta casca verde ou marrom; folhas bipinadas; flores perfumadas tipo racemos e coloração amarela; fruto do vagem, no Brasil pode ser encontrada Nordest...

The objective of this study was to determine adsorption isotherms and hygroscopic behavior of lyophilized powder from grugru palm. The powders of grugru palm were obtained by lyophilization process without maltodextrin (T1) and with 8% matodextrin (T2). The experimental data were obtained through the static gravimetric method at temperatures (25 ̊C, 30 ̊C, 35 ̊C and 40 ̊C), with different saturated...

Aim The homogenisation of historically isolated gene pools has been recognised as one the most serious conservation problems in Antarctic. Lichens are dominant components terrestrial biotas Antarctic and high mountain ranges southern South America. We study effects dispersal strategy migration history on their genetic structure to better understand importance these processes interplay shaping p...

BACKGROUND AND AIMS Hard-seeded (physical) dormancy is common among plants, yet mechanisms for dormancy release are poorly understood, especially in the tropics. The following questions are asked: (a) whether dormancy release in seed banks of the tropical shrub Parkinsonia aculeata (Caesalpiniaceae) is determined by wet heat (incubation under wet, warm to hot, conditions); and (b) whether its e...

BACKGROUND The complex network of direct and indirect relationships determines not only the species abundances but also the community characteristics such as diversity and stability. In this context, seed predation is a direct interaction that affects the reproductive success of the plant. For Acrocomia aculeata, the seed predation by Pachymerus cardo and Speciomerus revoili in post-dispersal m...