In order to determine the amount of phenols in an oily extract of Origanum vulgare leaves with an agile, accessible, economical and respectful procedure with the living environment, UV visible spectroscopy was used, creating a chromophore with iron III chloride. at 10,000 mg / L in 95% ethanol solution, a wave width of 330 nanometers and as a reference, a standard of 5-Isopropyl-2-methylphenol with a concentration of 997000 mg/L, dissolved successively (99 700 - 110 000 - 120 000 - 130000 - 140000 mg/L). The graphical representation of verification of the known quantities of phenols contained in the solutions and the product of the extraction by vapor drag of the leaves with respect to the absorbance, shows after the statistical analysis of variance by linear adjustment of the least squares, a linearity and precision in the procedure used, achieving concentrations between 120,000 and 140...

Obtiene un extracto acuoso de hojas de orégano Origanum vulgare por arrastre de vapor de agua, para determinar su actividad antibacteriana en vacas en producción con mastitis bovina con 12 y 14% de concentración en compuestos fenólicos, se emulsionó (O/W) usando dos métodos: ultrasonido y agitación magnética. Para el diagnostico se usó el test de California (CMT) y se confirmó mediante conteo de células somáticas (CCS) por citometría fija y unidades formadoras de colonias (UFC)/ml en cultivos de agares Manitol y MacConkey para Staphyloccocus aureus y Escherichia coli respectivamente. Se aplicó 5 ml del extracto emulsionado vía intramamaria posterior al ordeño y amamantamiento de la cría durante 3 días con cánulas de acero inoxidable y, en un diseño completamente al azar y análisis de varianza con arreglo bifactorial, muestran que los resultados indican diferencias es...

The present study was carried out at the confluence of the Baños, Minascocha and Quilla micro-basins; which belongs to the upper part of the Chancay-Huaral basin, in order to identify the areas of greatest vulnerability to high intensity rainfall phenomena (floods). For the modeling of this section, the flows obtained by means of the SWAT software were used. The flood simulation was carried out using the IBER V2.5 software, which is free software, which is used to simulate floods in shallow waters, that is, shallow waters. The files used were satellite images, DEM files, maximum flows. The Geographic Information Systems were also used: ArcGis 10.5, QGIS 3.8.2, SASPLANET, GLOBALMAPER. The mathematical basis was the two-dimensional equations of St. Venant, which incorporates the turbulence and friction of the flow. The results are shown in three strategic points at the exit of the headwat...

The aim of this study was to evaluate the effect of the addition of oregano essential oils (OEO) in the diet on duodenal morphometry of Cobb 500 broilers. In total, 400 chickens distributed in five treatments were used: supplementation with OEO (100, 200, 300 ppm) and two control treatments (commercial oregano [250 ppm] and growth-promoting antibiotic [300 ppm]), for six weeks, fed ad libitum with weekly formulated diets. The morphometric study was carried out with the help of a camera coupled to the microscope using AmScope 3.0 software, a 4x objective, covering an area of 2000 µm2. The variable proximal width of the villi was significantly greater (183 µm) in the OEO 300 ppm treatment at 21 days of age and the variable proximal depth was significantly greater (256 µm) in the OEO 300 ppm treatment at 42 days (p<0.05). It is concluded that the addition of OEO in doses of 300 ppm po...