Browsing by Autor "Daniela Miranda-Flores"

Now showing 1 - 4 of 4

Antioxidant potential and fatty acid profile of different canihua (Chenopodium pallidicaule) cultivars, raised in Bolivian Altiplano
(2023) Jimena Limachi; Susana Huanca; Grover Castañeta; Daniela Miranda-Flores; Valeria de Los Angeles Aponte Palma; Jorge Yañiquez; Leslie Tejeda; Patricia Mollinedo; K. Dimov; Teodora Popova
Though widely used in the Andes in the ancient times, canihua has been considered a forgotten crop for a long time. Only lately, due to increasing demand in European countries, canihua reveals significantly growing market potential. With the current scarcity of research about the composition, nutritional and healthy profile, this study aimed to provide new information about the antioxidant capacity and the fatty acid profile of Bolivian canihua cultivars with different grain colour. Samples of 28 cultivars were used in the study, divided into three groups according to the grain colour– light brown, pink and dark brown. Total antioxidant capacity, content of the total phenols and flavonoids, as well as fatty acid composition were quantified for the groups. The cultivars with light brown grains displayed the strongest antioxidant potential and the highest content of phenols and flavonoids. Regardless of the colour, canihua cultivars were rich in saturated fatty acids, linoleic and oleic acid. The pink grained cultivars displayed the most favourable fatty acid profile, with lowest amount of C16:0. Correlation analysis showed that total phenols and flavonoids, as well as saturated and monounsaturated fatty acids had strong and positive contribution for the antioxidant potential of the canihua grains.
Characterization of carotenoids, proximal analysis, phenolic compounds, anthocyanidins and antioxidant capacity of an underutilized tuber (Tropaeolum tuberosum) from Bolivia
(Springer Nature, 2024) Grover Castañeta; Daniela Miranda-Flores; Marcelo Bascopé; J. Mauricio Peñarrieta
Abstract The tubers of Tropaeolum tuberosum , locally known as Isaño and native to the Andean region of South America, have been known since ancient times for their multiple uses in the Bolivian population. They are used both as food in various preparations and in traditional medicine. In this investigation, we report the study of three Isaño cultivars currently consumed in Bolivia. We determined their proximal composition, characterized carotenoids, determined antioxidant capacity, measured total phenols and total flavonoids, and quantified the major polyphenols. The results show that, apart from being a source of important nutrients such as proteins, Bolivian Isaño is a source of antioxidants and has a higher concentration of flavonoids and anthocyanidins, particularly in the purple cultivar. Additionally, we identified the presence of three carotenoids in this food for the first time: Lutein, Neoxanthin, and β-carotene. Through these types of studies, we aim to revalue this food, which is little known both in Bolivia and outside the Andean region of South America. Considering its nutritional properties, we seek to increase its consumption.
Characterization of carotenoids, proximal analysis, phenolic compounds, anthocyanidins and antioxidant capacity of an underutilized tuber (Tropaeolum tuberosum) from Bolivia
(Research Square (United States), 2023) Grover Castañeta; Daniela Miranda-Flores; Marcelo Bascopé; J. Mauricio Peñarrieta
Abstract The tubers of Tropaeolum tuberosum , locally known as Isaño and native to the Andean region of South America, have been known since ancient times for their multiple uses in the Bolivian population. They are used both as food in various preparations and in traditional medicine. In this investigation, we report the study of three Isaño cultivars currently consumed in Bolivia. We determined their proximal composition, characterized carotenoids, determined antioxidant capacity, measured total phenols and total flavonoids, and quantified the major polyphenols. The results show that, apart from being a source of important nutrients such as proteins, Bolivian Isaño is a source of antioxidants and has a higher concentration of flavonoids and anthocyanidins, particularly in the purple cultivar. Additionally, we identified the presence of three carotenoids in this food for the first time: Lutein, Neoxanthin, and β-carotene. Through these types of studies, we aim to revalue this food, which is little known both in Bolivia and outside the Andean region of South America. Considering its nutritional properties, we seek to increase its consumption.
Influence of Sunlight Exposure and Traditional Dehydration on Chemical and Nutritional Properties of Oxalis tuberosa (oca) Tubers
(Springer Science+Business Media, 2025) Grover Castañeta; Daniela Miranda-Flores; Atma‐Sol Bustos; Rocío García; Erick Loayza; Cristhian Carrasco; Leslie Tejeda; Franco M. Cabrerizo; J. Mauricio Peñarrieta