Given the constant presence of fraudulent drugs in unauthorized sales places, it is necessary to have simple methods to identify the active ingredients, for this purpose, a sequential analytical method is proposed to identify NSAIDs, which consists of three stages: drop test , reactions in tube with aqueous solution 0.1% of diclofenac sodium, naproxen sodium and ibuprofen and reaction separately with aqueous solutions of 0.1N AgNO3, 0.5N CuSO4 and 0.1N FeCl3 originating in each case, after 2-3 minutes , opalescence and characteristic color similar for both the secondary standard and the solution analyzed. In the third stage, said NSAIDs in aqueous medium at concentration 75mg / 5mL separately, was added 4 drops of the reagent obtained by interaction of cobalt nitrate and ammonium thiocyanate originating microcrystals whose geometric structure was observed under optical microscope at 40x;...

Ante la constante presencia de medicamentos fraudulentos en lugares de venta no autorizados, es necesario disponer de métodos sencillos para identificar los principios activos, con esta finalidad, se propone un método analítico secuencial para identificar AINES que consta de tres etapas: ensayo a la gota, reacciones en tubo con solución acuosa 0.1% de diclofenaco sódico, naproxeno sódico e ibuprofeno y reacción por separado con soluciones acuosas de AgNO3 0,1N, CuSO4 0,5N y FeCl3 0,1N originando en cada caso, después de 2-3 minutos, opalescencia y color característico similar tanto para el estándar secundario como para la solución analizada. En la tercera etapa, dichos AINES en medio acuoso a concentración 75mg/5mL por separado, se le añadió 4 gotas del reactivo obtenido por interacción de nitrato de cobalto y tiocianato de amonio originando microcristales cuya estructura ...

The presence of ochratoxin A (OTA), a mycotoxin with carcinogenic properties, was analyzed in the beans of Theobroma cacao L. "trinitario cacao" from the collection center of Pisana-Tingo Maria, of the San Martin Region, Peru. The samples were collected in four stages of production: harvesting, fermentation, drying and storage. The OTA was extracted using 60 % acetonitrile and purified by immunoaffinity columns and subsequent quantification by high performance liquid chromatography (HPLC). The recovery percentage of the method used was evaluated by using samples fortified with OTA, showing a recovery percentage greater than 95 %. The beans evaluated in the different stages of production did not show the presence of ochratoxin A and in the mycotoxigenic analysis the presence of fungi of the genus Fusarium, Penicillium and yeasts was evidenced.