Examinando por Materia "Bactris gasipaes"

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    PublicaciónAcceso abierto
    Estudio comparativo del contenido de ácidos grasos en 4 variedades de chontaduro (Bactris gasipaes) de la región del Pacífico Colombiano.
    (2013-06-28) Restrepo O., Jaime; Vinasco, Luz Elena; Estupiñán R., Jaime Andrés
    Mediante cromatografía de gases se llevó a cabo la identificación y cuantificación de los ácidos grasos saturados e insaturados presentes en la pulpa de cuatro variedades de chontaduro (Bactris gasipaes Kunth) provenientes de la región pacifica colombiana. La extracción de aceite se realizó por el método Soxhlet, empleando hexano como solvente. Los resultados obtenidos indican que el ácido oleico mono-insaturado es el de mayor proporción en la fracción lipídica con valores que van desde 38,0 a 51,9%, siendo el ácido palmitico el más abundante de los ácidos grasos saturados con valores desde 34,U hasta 39,0%. Entre los ácidos grasos esenciales, el ácido linoleico fue el más abundante con valores que iban desde 2,4 a 8,0%. Considerando el potencial nutricional de este fruto, sugerimos su plena utilización como fuente de lípidos en la dieta básica de la región.
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    PublicaciónAcceso abierto
    The weevil Dynamis borassi (Coleoptera: Curculionidae: Dryophthorinae) associated with native palms in forests and disturbed areas in Buenaventura, Colombia.
    (Universidad del Valle, 2020-12-26) Bautista Giraldo, Maria Alejandra; Armbrecht, Inge; Vásquez Ordoñez, Aymer Andrés; Sociedad Colombiana de Entomología - Socolen; Universidad del Valle; Montoya Lerma, James
    Deforestation produces homogeneous agricultural environments creating an imbalance between herbivores and their hosts. Since 2010, there has been a phytosanitary crisis in the peach palm (or chontaduro), Bactris gasipaes in the Colombian Pacific Region which can be attributed to two species of palm weevils: Rhynchophorus palmarum and Dynamis borassi. It has been proposed that deforestation of native palms, used by these weevils, induces these to find new resources in the peach palm. This study examined the association of these two weevils with native palms near chontaduro crops and how this occurs in two types of habitats. Six secondary forests and six anthropogenically disturbed areas were visited in third administrative division: “corregimientos” 1 and 2 (Zone A) and 7 and 8 (Zone B) in the municipality of Buenaventura. Three 50 x 100 m plots were designated in each zone, all palms with damage being recorded; the sampling was also complemented with a free sample. Twelve palm species distributed into one subfamily and nine genera were identified. A total of 271 unopened inflorescences were examined in Zone A and 501 in Zone B. Only evidence of damage was found in individuals of the “milpesos” palm (Oenocarpus bataua), an economically exploitable species. The proportion of palms affected in terms of habitat was significantly higher in the disturbed habitat. This is the first record that quantifies a high percentage of association between D. borassi and the “milpesos” palm in the Colombian Pacific Region, a phenomenon that could be explained by agroecological hypotheses.