February 2019

Essential oil composition, antifungal activity and leaf anatomy of Lippia alba (Verbenaceae) from Brazilian Chaco

This study aims to determine the essential oil chemical composition of Lippia alba (Mill.) N.E.Br. ex Britton & P. Wilson collected in the Brazilian Chaco where plants grow in conditions of high temperatures in the summer, periodic flood, low temperatures and air humidity in the winter. We also evaluate the oil antifungal activity against the animal and plant pathogenic fungi Aspergillus flavus, A. fumigatus, A....

Author(s): Rosani do Carmo de Oliveira Arruda⊃, Cristiane Pimentel Victório⊃, Amanda Galdi Boaretto⊃, Carlos Alexandre Carollo⊃, Cariolando da Silva Farias, Clarice Rossato Marchetti, Ronaldo José dos Santos⊃, Giovana Cristina Giannesi and Denise Brentan Silva⊃  

February 2019

Determination of concentration of some essential and heavy metals in roots of Moringa stenopetala using flame atomic absorption spectroscopy

This study is aimed at determination of concentration of essential (Ca, K, Na and Mg) and heavy (Cd, Cr, Pb, Hg, Cu and Zn) metals using Flame Atomic Absorption Spectroscopy (FAAS) of samples taken from fresh roots of Moringa stenopetala. A wet digestion method involving use of mixture of (HCl and HNO3, ratio 3:1) and 10 ml of 30% H2O2 at an optimum temperature and time duration was deployed during sample preparations....

Author(s): Tsegaye Mega Kaba and Kusse Gudishe Goroya