*Autor a quien debe ser dirigida la correspondencia.Recibido Ago. 23, 2017; Aceptado Nov. 3, 2017; Versión final Dic. 4, 2017, Publicado Jun. 2018 _____________________________________________________________________________________________________________________________________ ResumenSe han estudiado las propiedades antioxidantes y composición fisicoquímica de 21 genotipos de papas criollas Solanum tuberosum (Phureja). Se determinó el contenido de humedad, cenizas, proteínas, almidón, azúcares totales y reductores, actividad antioxidante (ABTS y FRAP), fenoles totales y vitamina C. El análisis fisicoquímico mostró variaciones genotípicas significativas en muestra cruda. La humedad entre 72,06% -77,07%; cenizas 0,96% -2,56%; proteínas 6,95% -11,38% BS; almidón 14,44% -22,4%; azúcares totales BH 16,38%-23,67% y azúcares reductores BH 0,88%-3,8%. El perfil antioxidante evidenció diferencias genotípicas. ABTS entre 4408 -12543 (crudo) y 6644 a 14492 (cocidas) µmol de Trolox/100g BS. FRAP de 76,4 a 203,2 (crudo) y de 121,6 a 324,8 (cocidas) mg ácido ascórbico/100 g BS. Los fenoles en muestras cocidas fueron mayores que en crudo (245,2 -524,8 y 161,6 -442,7 mg de ácido gálico/100 g BS, respectivamente, la vitamina C disminuyó entre 33,07% a 68,8% luego de cocción. Palabras clave: capacidad antioxidante; papa diploide; análisis fisicoquímico; nutracéuticos; Solanum tuberosum Physicochemical Composition and Antioxidant Properties of Native Diploid Potato (Solanum tuberosum Phureja Group) AbstractThe antioxidant properties and physicochemical composition of 21 genotypes of diploid potato (Solanum tuberosum Phureja Group) were studied. The content of moisture, ash, proteins, starch, total and reducing sugars, antioxidant activity (ABTS and FRAP), total phenols and vitamin C were determined. The physicochemical analysis showed significant genotypic variations in raw sample. Humidity between 72.06% -77.07%; Ash 0.96% -2.56%; Proteins 6.95% -11.38% DB; Starch 14.44% -22.4%; Total sugars WB 16,38% -23,67% and reducing sugars WB 0,88% -3,8%. The antioxidant profile showed genotypic differences. ABTS between 4408 -12543 (raw) and 6644 to 14492 (cooked) μmol Trolox / 100g DB. FRAP from 76.4 to 203.2 (raw) and from 121.6 to 324.8 (cooked) ascorbic acid / 100 g DB. The phenols in cooked samples were higher than in crude (245.2 -524.8 and 161.6 -442.7 mg gallic acid/100 g BS, respectively, vitamin C decreased from 33.07% to 68.8 % after cooking.
Bunching onion (Allium fistulosum L.) is a strategic crop for Colombia due to its economic relevance within fresh and processed food markets, and therefore, there is a demand for high yielding genotypes adapted to specific regions. For this reason, after carrying out a clonal selection process including 62 genotypes, ten of these, including a regional control, were evaluated for six different traits in Boyacá (Colombia) during 2012 and 2013. These traits were grouped into agronomic, yield, and processing categories. In general, these showed significant differences ( ≤ 0.01) for genotypes, location, and genotypes × location interaction. Compared with the regional control and based on the multienvironmental analysis the genotypes Clone 30 and Clone 38 were the most promising new cultivars identified in this study. These two clones showed comparative advantages on earliness and yield, and they moreover showed some level of resistance to downy mildew and root rot, the most limiting diseases for Boyacá's bunch onion farmers. Therefore, Clone 30 and Clone 38 were registered as new bunching onion cultivars for the Cundiboyacense High Plateau region under the names Corpoica Aquitania-1 and Corpoica Tota-1, respectively. Finally, further approaches and initiatives on bunching onion breeding are discussed.
AGROSAVIA Mary es una variedad de papa de Colombia para el consumo en fresco y el procesamiento en hojuelas y bastones, que presenta tolerancia estable a la enfermedad de la gota Phytophthora infestans. En este plegable se encuentran los detalles de sus características (de planta y agronómicas y las recomendaciones para el manejo de la variedad.
Los tubérculos de Sol Andina poseen características de calidad en cosecha como: piel lisa, profundidad de ojos intermedia y color de piel amarillo intermedio. Estas permiten que el proceso de lavado sea más rápido y sencillo, su brillo es duradero; cualidad que facilita y mejora la valoración del producto al momento de la comercialización para consumo en fresco.
AGROSAVIA Mary es una variedad de papa de Colombia para el consumo en fresco y el procesamiento en hojuelas y bastones, que presenta tolerancia estable a la enfermedad de la gota Phytophthora infestans. En este plegable se encuentran los detalles de sus características (de planta y agronómicas y las recomendaciones para el manejo de la variedad.
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