ABSTRACT
Schinus molle L. (aguaribay, aroeira-falsa, "molle", family Anacardiaceae), a native of South America, produces an active antibacterial essential oil extracted from the leaves and fruits. This work reports a complete study of its chemical composition and determines the antibacterial activity of Schinus molle L. essential oil and its main components. The results showed that the crude extract essential oil has a potent antibacterial effect on Staphylococcus aureus ATCC 25923, a strong/moderate effect on Escherichia coli ATCC 25922 and moderate/weak one on Pseudomonas aeruginosa ATCC 27853.
Subject(s)
Anacardiaceae/chemistry , Anti-Bacterial Agents/pharmacology , Plant Oils/pharmacology , Anti-Bacterial Agents/chemistry , Drug Synergism , Escherichia coli/drug effects , Fruit/chemistry , Microbial Sensitivity Tests , Plant Extracts/chemistry , Plant Extracts/pharmacology , Plant Leaves/chemistry , Plant Oils/chemistry , Pseudomonas aeruginosa/drug effects , Staphylococcus aureus/drug effectsABSTRACT
The aim of this work was to study the influence of essential oil fractionation on acaricidal activity against the cattle tick Rhipicephalus (Boophilus) microplus. The citronella (Cymbopogon winterianus J.) and pepper tree (Schinus molle L.) essential oils were fractionated by vacuum distillation yielding fractions that were analyzed by the GC/MS. Laboratory tests were carried out to determine the effect of the total essential oil and fractions on larvae of the cattle tick R. (B.) microplus. The fractions 04 and 05 of the C. winterianus essential oil were the most active showing LC50 values of 1.20 and 1.34 μL/mL, respectively. The LC50 of the total oil was 3.30 μL/mL while the effect of the fractions 01, 02 and 03 was less pronounced, with LC50 values of 4.37, 4.24 and 3.49 μL/mL, respectively. The fraction 03 of the S. molle essential oil was the most active showing LC50 value of 8.80 μL/mL while the fractions 01 and 02 did not show toxic effects on the larvae.
ABSTRACT
Los efluentes líquidos producidos por las curtiembres (cualquiera sea el tipo de cuero que fabriquen, al cromo o vegetal) son de alto impacto ambiental tanto por su volumen como por la calidad de su carga contaminante. Este trabajo forma parte del desarrollo de una tecnología alternativa para disminuir el tenor de sulfuros y la Demanda Biológica de Oxígeno del efluente, contemplando la recuperación de los contaminantes presentes. Orientado a obtener información experimental, a escala laboratorio, del comportamiento de la etapa de absorción utiliza distintas soluciones absorbedoras, y una mezcla de ambas
