Evaluation of chemical constituents in Norantea guianensis aubl. Extracts, embryotoxicity, and acetylcholinesterase inhibitory potential in Danio rerio.

Norantea guianensis Aubl., commonly referred to as the parrot flower or macaw-tail vine, is a plant species found in the Brazilian Amazon, Caatinga, and Cerrado biomes. It is used in folk medicine for its anxiolytic properties, as well as its ability to alleviate headaches and reduce fever.

Toxicological effects of aqueous extract of Genipa americana L. leaves on adult zebrafish (Danio rerio): Chemical profile, histopathological effects and lack of genotoxicity.

Genipa americana is a native plant of Brazil with potential applications in folk medicine. Whereas most of the phytochemical and pharmacological studies on this plant have focused on its fruits, the crude extracts of its leaves contain chemical metabolites that may have toxicity to organisms, which have yet to be investigated. This study aimed to determine the main groups of secondary metabolites in the aqueous extract of the leaves of G.

3D-Printed glycerol microfluidic fuel cell.

A 3D-printed microfluidic fuel cell is presented. Fused deposition modeling is used to build a microchannel with a 0.015 cm cross-sectional area for stable colaminar flow conditions.

Insulating 3D-printed templates are turned into metallic electrodes: application as electrodes for glycerol electrooxidation.

We turned printed plastic pieces into a conductive material by electrochemical polymerization of aniline on the plastic surface assisted by graphite. The conductive piece was then turned into a metallic electrode by potentiodynamic electrodeposition. As a proof-of-concept, we built indirect-3D-printed Pd, Pt and Au electrodes, which were used for glycerol electrooxidation.