Examinando por Autor "Ramos Pacheco, Betsy S."

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    Microencapsulation of Propolis and Honey Using Mixtures of Maltodextrin/Tara Gum and Modified Native Potato Starch/Tara Gum
    (Multidisciplinary Digital Publishing Institute. Food, 2023) Gutiérrez Gómez, Edgar; Ligarda Samanez, Carlos A.; Choque Quispe, David; Moscoso Moscoso, Elibet; Huamán Carrión, Mary L.; Ramos Pacheco, Betsy S.; Germán De la Cruz; Arévalo Quijano, José C.; Muñoz Saenz, Jenny C.; Muñoz Melgarejo, Mauricio; Quispe Quezada, Uriel Rigoberto; Luciano Alipio, Rober; Zamalloa Puma, Miluska M.; Álvarez López, Genaro Julio; Sucari León, Reynaldo
    Ethanolic extracts of propolis and bee honey contain substances beneficial to human health. Mixtures of wall materials were compared in spray-drying microencapsulation of ethanolic extracts of propolis and bee honey rich in bioactive compounds. Maltodextrin and tara gum were used to obtain microencapsulates A, and modified native potato starch and tara gum were used for microencapsulates B. High values of phenolic compounds, flavonoids, and antioxidant capacity were obtained in microcapsules A and B, and the results obtained in terms of encapsulation efficiency, yield, hygroscopicity, solubility, moisture, Aw, bulk density, and color were typical of the spray-drying process. On the other hand, spherical and elliptical microparticles of sizes between 7.83 and 53.7 µm with light and medium stability were observed. Thermogravimetric properties were similar in both microencapsulates; total organic carbon, SEM-EDS, and FTIR analyses corroborated the encapsulation. X-ray diffractogram exhibited amorphous structures, and the release kinetics of phenolic compounds presented high values from 8.13 to 12.58 mg GAE/g between 7 and 13 h. Finally, modified potato starch is a better encapsulant than maltodextrin because it has better core protection and controlled release of the encapsulated bioactive compounds.
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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.