Ecological quality of a forest in a state of succession based on structural parameters: A case study in an evergreen Amazonian-Andean forest, Ecuador.

The evergreen forests of the Ecuadorian Amazon Region are altered by anthropogenic and natural factors. This provokes the need to look for tools that facilitate decision-making in support of restoration. We characterized the ecological structure and distribution of an evergreen Amazonian-Andean forest in the upper Puyo River micro-basin as a base for establishing an ecological quality index.

Optimisation of ultrasound-assisted extraction of phenolic antioxidants from Loes. leaves using response surface methodology.

The present study carried out the optimisation of the total polyphenol content (TPC) extraction assisted by ultrasound in leaves applying response surface methodology (RSM). Also, the evaluation of the antioxidant activity of the extract obtained under the optimal extraction conditions was performed. The effect of the variables like, time of sonication, temperature, ethanol/water ratio and solid/liquid relationship and the interactions between them were analysed through the use of a factorial design 2ˆ4.

Evaluation of the synergistic effects of antioxidant activity on mixtures of the essential oil from L., L. and L. using simplex-lattice design.

Essential oils (EOs) are known for their antioxidant properties, and are widely employed in the food industry as preservatives. They can be used as condiments or as preservatives to achieve certain organoleptic effects for consumers. The aim of this research was to evaluate antioxidant activity in mixtures of three EOs: L.