Examinando por Materia "Compuestos bioactivos"

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Comprehensive Morpho-Functional Profiling of Peruvian Andean Capsicum pubescens Germplasm Reveals Promising Accessions with High Agronomic and Nutraceutical Value
(MDPI, 2026-01-17) Salas Zeta, Erick Leao; Bernal Canales, Katherine Lisbeth; Delgado Lazo, Andrea Graciela; Pacheco Lizárraga, Gonzalo Antonio; Hermoza Gutiérrez, Marián; Cántaro Segura, Hector Baroni; Fernandez Huaytalla, Elizabeth; Gutiérrez Reynoso, Dina Lida; Quispe Jacobo, Fredy Enrique; Ccapa Ramírez, Karina Beatriz
Capsicum pubescens (rocoto) is an Andean domesticate with notable agronomic and nutraceutical potential, yet it remains underrepresented in chili pepper breeding programs. In this study, 78 accessions from the Peruvian Andes were evaluated in a single field environment during the 2024 growing season for 28 variables spanning plant architecture, phenology and yield, color (CIELAB), weight, fruit morphology, physicochemical variables, and functional phytochemicals, including total phenolics, carotenoids, ascorbic acid, capsaicinoids, and antioxidant activity (FRAP, DPPH, ABTS). Descriptive analyses revealed broad phenotypic diversity in key variables such as yield and bioactive compounds. Spearman correlations uncovered a clear modular structure, with strong within-domain associations across morphological, chromatic, and biochemical variables, and statistically significant but low-magnitude cross-domain associations (e.g., fruit length with pungency, redness with total phenolics). Principal component analysis and hierarchical clustering resolved three differentiated phenotypic profiles: (i) low-pungency accessions with high soluble solids and varied fruit colors; (ii) highly pungent materials with elevated antioxidant capacity; and (iii) large, red-fruited accessions with considerable carotenoid content and high moisture. This multivariate architecture revealed weak cross-block correlations among agronomic, color, and functional traits, enabling selection of promising accessions combining desirable agronomic attributes and favorable bioactive profiles in specific accessions. These results provide a quantitative foundation for future breeding strategies in C. pubescens, opening concrete opportunities to develop improved cultivars that simultaneously meet productivity and functional quality criteria.
Compuestos bioactivos y actividad antioxidante de semillas de quinua peruana (Chenopodium quinoa W.)
(Sociedad Química del Perú, 2017-03-31) Valencia, Zanhy; Cámara, Fernando; Ccapa Ramírez, Karina; Catacora, Policarpio; Quispe Jacobo, Fredy Enrique
Se investigaron azúcares reductores, compuestos bioactivos y actividad antioxidante de 24 accesiones de quinua de la colección nacional del INIA Perú. Las semillas mostraron fenólicos totales entre 0,783 a 3,437 mg GAE/g, flavonoides totales entre 0,199 y 1,029 mg CE/g muestra, betacianinas y betaxantinas en cantidades no significativas, y azúcares reductores entre 30,973 y 88,278 equivalentes mg de glucosa/g muestra. La actividad antioxidante según DPPH y ABTS mostraron diferencias significativas entre las diferentes semillas de quinua estudiadas.
Linking Grain Mineral Content to Pest and Disease Resistance, Agro-Morphological Traits, and Bioactive Compounds in Peruvian Coffee Germplasm
(MDPI, 2025-12-24) Choque Incaluque, Ester Maryeta; Cueva Carhuatanta, César Aldair; Carreraa Rojo, Ronald Pio; Maravi Loyola, Jazmín Yurema; Hermoza Gutiérrez, Marián; Cántaro Segura, Hector Baroni; Fernández Huaytalla, Elizabeth; Gutiérrez Reynoso, Dina Lidna; Quispe Jacobo, Fredy Enrique; Ccapa Ramírez, Karina Beatriz
Mineral composition modulates plant health, agro-morphological attributes, and functional quality in coffee, yet large-scale evaluations remain limited. In 150 Coffea arabica L. accessions, we quantified grain minerals (Ca, K, Mg, Na, P, Zn, Cu, Fe, Mn); resistance to coffee leaf miner (CLM), coffee berry borer (CBB), and coffee leaf rust (CLR); agro-morphological traits; bioactive compounds (phenolics, flavonoids, chlorogenic acid, trigonelline, caffeine); and antioxidant capacity (ABTS, DPPH, FRAP). Mn and Zn were associated with greater resistance to CBB and CLM, whereas P and Ca related with lower susceptibility to CLR; a P–Zn antagonism emerged as a critical nutritional axis. Phosphorus was linked to larger size and higher 100-bean mass; Ca and Mg to greater fruit number and fruit mass per plant; and Fe to improved filling and higher 100-bean mass in parchment coffee. For bioactive compounds, P and K were positively associated with total phenolics, total flavonoids, caffeine, and ABTS/FRAP antioxidant activity, while trigonelline and chlorogenic acid correlated positively with the micronutrients Zn, Cu, and Fe. Cluster analysis resolved groups associated with resistance, Zn/Fe biofortification, productivity, and functional quality. PER1002287, PER1002216, PER1002207, and PER1002197 emerged as promising accessions balancing plant health, yield, and phytochemical quality. Overall, grain mineral composition is linked to plant health, productivity, and functional quality in coffee, providing a foundation for precision nutrient management and breeding programs aimed at resilient and high–value-added coffee.