Browsing by Author "Arteaga-Llacza, Pedro"

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Antioxidant capacity and polyphenol content of the encapsulated pulpe of Opuntia ficus yellow variety Julio
(LACCEI Inc., 2021-12) Torre-Montalvo, Julio; Arteaga-Llacza, Pedro; Miranda-Jara, Angélica; Quispe-Barrantes, Patricia; Miranda-Chávez, Helí; Quispe-Solano, Miguel Angel; Chuquilín-Goicochea, Roberto
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 2k 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
Chemical composition, color y moisture of slices dried by refractance window of two Ullucus tuberosus morphotypes
(LACCEI Inc., 2021-12) Pari-Castro, Martha; Arteaga-Llacza, Pedro; Miranda-Jara, Angélica; Quispe-Barrantes, Patricia; Miranda-Chávez, Helí; Quispe-Solano, Miguel Ángel; Chuquilín-Goicochea, Roberto
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
Optimización y caracterización física del biodiesel obtenido del aceite de residuos de Annona cherimola
(LACCEI Inc., 2020-07) Chuquilin-Goicochea, Roberto; Cuicapusa-Quispe, Pedro; Arteaga-Llacza, Pedro; Obregón Tinoco, Henry
The effect of temperature, catalyst concentration (sodium hydroxide), alcohol molar ratio: oil and transesterification time on the yield of biodiesel obtained from cherimoya residue oil (Annona cherimola) was evaluated. A rotatable composite central design (DCCR) with 30 runs was used. The concentration of the catalyst and the molar ratio alcohol: transesterification oil were the variables that had a significant effect (p < 0.05) on the biodiesel yield. The highest yield biodiesel (90%) was obtained with a catalyst concentration of 0.4%, at a temperature of 50 ° C, molar ratio methyl alcohol: oil of 3: 1 and time of 39 minutes of transesterification process. Its physical characteristics were: caloric power 9477 cal.g-1, kinematic viscosity 7.53 mm2.s-1, carbon residue 0.0817% and sulphated ash 0.005%. Thus, it was determined that it is feasible to obtain biodiesel using waste cherimoya