Examinando por Autor "Quispe Quezada, Uriel R."

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    Bioactive Compounds and Sensory Quality in Chips of Native Potato Clones (Solanum tuberosum spp. andigena) Grown in the High Andean Region of PERU
    (Multidisciplinary Digital Publishing Institute. Food, 2023) Gutiérrez Gómez, Edgar; Ligarda Samanez, Carlos A.; Palomino Rincón, Henry; Choque Quispe, David; Moscoso Moscoso, Elibet; Arévalo Quijano, José C.; Huamán Carrión, Mary L.; Quispe Quezada, Uriel R.; Muñoz Saenz, Jenny C.; Cabel Moscoso, Domingo J.; Sucari León, Reynaldo; Aroquipa Durán, Yolanda; García Espinoza, Antonina J.
    Native potatoes (Solanum tuberosum spp. andigena) have diverse pigments and are cultivated in Peru’s high Andean regions; they are characterized by containing bioactive compounds that prevent various degenerative diseases. The study aimed to evaluate the physicochemical and sensory quality in chips of native potato clones grown at 3496 m altitude, for which the potatoes were cut into slices and fried in extra virgin olive oil at 180 °C for 200 s. This was determined by proximal analysis, reducing sugars, minerals, color, antioxidant capacity (AC), total phenolic compounds (TPC), and anthocyanins in fresh and chips; an instrumental characterization by FTIR and SEM and sensory tests were also performed. The native potatoes presented low moisture and reduced sugar contents; when frying, their bioactive properties improved, increasing AC, TPC, and trace elements, such as K, Mg, Ca, P, Fe, and Zn. To conclude, fresh clones have high yields in the field and are an essential source of nutrients and bioactive; the salt-free chips of clone B presented better physicochemical properties and greater sensory acceptance, closely followed by clone A. Both clones could be used as raw material by food companies that produce snacks to benefit high Andean agricultural producers.
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    Native Potato StarcTara Gum as Polymeric Matrices to Obtain Iron-Loaded Microcapsules from Ovine and Bovine Erythrocytes
    (Multidisciplinary Digital Publishing Institute. Polymers, 2023) Gutiérrez Gómez, Edgar; Ligarda Samanez, Carlos A.; Moscoso Moscoso, Elibet; Choque Quispe, David; Ramos Pacheco, Betsy S.; Arévalo Quijano, José C.; Germán De la Cruz; Huamán Carrión, Mary L.; Quispe Quezada, Uriel R.; Cabel Moscoso, Domingo J.; Muñoz Melgarejo, Mauricio; Calsina Ponce, Wilber César
    Iron deficiency leads to ferropenic anemia in humans. This study aimed to encapsulate iron-rich ovine and bovine erythrocytes using tara gum and native potato starch as matrices. Solutions containing 20% erythrocytes and different proportions of encapsulants (5, 10, and 20%) were used, followed by spray drying at 120 and 140 °C. Iron content in erythrocytes ranged between 2.24 and 2.52 mg of Fe/g; microcapsules ranged from 1.54 to 2.02 mg of Fe/g. Yields varied from 50.55 to 63.40%, and temperature and encapsulant proportion affected moisture and water activity. Various red hues, sizes, and shapes were observed in the microcapsules. SEM-EDS analysis revealed the surface presence of iron in microcapsules with openings on their exterior, along with a negative zeta potential. Thermal and infrared analyses confirmed core encapsulation within the matrices. Iron release varied between 92.30 and 93.13% at 120 min. Finally, the most effective treatments were those with higher encapsulant percentages and dried at elevated temperatures, which could enable their utilization in functional food fortification to combat anemia in developing countries.