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Las “mollejas de pollo al sillao” es un plato peruano tradicional, originario de la ciudad de Trujillo (Perú), muy apreciado por su agradable sabor. Con el diseño de este producto en conserva se puede aprovechar las proteínas, el hierro y otros micronutrientes que contiene. En este estudio se evaluó el efecto del tamaño de pieza y de la concentración de vinagre, usando un diseño factorial completo 3x2. La materia prima y los tratamientos estudiados fueron caracterizados fisicoquímicamente. La evaluación sensorial de sabor, color y textura se hizo mediante la prueba de ranking, de 1 a 5 puntos. La condición seleccionada para el diseño del producto fue tamaño de pieza de ¼ unidad y 100 mL/kg de vinagre, mostrando características fisicoquímicas y sensoriales adecuadas, para su comercialización. El producto final presentó: proteína (13,45%), grasa (10,40%), humedad (67,49), cenizas (1,82) y pH (5,14); además tuvo puntajes de sabor (4,23), color (4,53) y textura (4,27). El tiempo de proceso de esterilización fue de 35 min y letalidad 9,882 min, en un envase tipo fiesta.

This work aimed to evaluate the effect of cut thickness and drying time on two morphotypes (Quello Lisa and Puka Lisa) of Ullucus tuberosus from Huancavelica. A rotatable central composite design, taking to 2 -4 mm as minimum and maximum thickness values and 15 -45 min as minimum and maximum time values. The final moisture content of the product and its color parameters ( L *, a *, b *, C and H) were evaluated. It was found a significant effect of the cut thickness and drying time was found on the dependent variables, in both morphotypes studied. The optimal thickness was found to be 2.25 and 2.45 mm, for Quello Lisa and Puka Lisa, respectively; and the refractive window drying time, 51.2 min., that maximize color and final moisture for both morphotypes. A stable dehydrated product suitable for commercialization as an input for typical peruvian food was obtained.

The yellow prickly pear (Opuntia ficus-indica) is a seasonal fruit of the Huancavelica region, which is used very little, despite being a source of phenolic compounds and natural antioxidants, which is why encapsulated yellow prickly pear pulp was developed using maltodextrin, in such a way that its functional properties are preserved. A 2 k factorial design was used whose independent variables were the encapsulating agent ratio (10% and 20%) and the inlet air temperature (120 ° C and 140 ° C), and the dependent variables were: the polyphenol content totals (Folin -Ciocalteau method), antioxidant activity (2,2-diphenyl-1-picrylhydracil free radical method), moisture (gravimetric method), yield and colorimetry parameters (a, b, L)to measure encapsulation efficiency. The maximum total polyphenol content and antioxidant activity reached were 231.16 ± 0.406 mg gallic acid equivalent / 100 g and 53.86 ± 2.85% inhibition, respectively: for an encapsulating agent ratio of 10% and inlet air temperature 120 ° C. With these values of the independent variables, moisture, and yield values of 6.49 ± 0.06% and 7.45 ± 0.15%, respectively, were obtained. The stability of the color of the encapsulation, as well as its functional properties are achieved at a ratio of 10% and inlet temperature of drying air at 120 ° C.