In this paper entitled "hippuric acid as an indicator of exposure to toluene in workers footwear district of El Porvenir-Trujillo" whose objectives are: Quantify hippuric from urine samples acid, compare whether the concentration found in the samples urine is within permissible limits provided by WHO, demonstrated by graphs the relationship between the concentration of hippuric acid with working hours, years working, age groups, protective measures, symptoms and labor section of the worker; we worked with 53 urine samples from workers footwear El Porvenir, who often use special adhesives and are in contact with terokal, which in its chemical composition has substances such as toluene, benzene and other toxic substances. Quantification of hippuric acid in urine samples by the titration method and Weichselbaum Probstein average value was 1.37 g / L, with no significant indicator of exposur...

The objective of the present research was to evaluate the antioxidant capacity of the essential acceptance of the leaves of Peperomia dolabriformis Kunth against the radical 2,2-diphenyl-1-picrylhydrazyl (DPPH*). This plant was collected in the Campana hill, Trujillo province, La Libertad region. The oil extraction was carried out by hydrodistillation and the identification of the major components was done by Gas Chromatography coupled to Masses (GC MS). In order to determine the antioxidant activity of the oils, the DPPH root trapping capacity was used: DPPH* radical entrapment capacity, the highest DPPH* Finding an IC50 of 20.36 mg / mL. This suggests that in the essential oil studied there are present hydrogen-donor compounds or electrons that can stabilize the cationic radical, which are limonene and 1,6-dimethyl-4-(propan-2-yl)- 1,2,3,4,4A,7,8,8A-octahydronaphthalen-1-ol.