3 research outputs found
Kinetic Study of Fungal Growth of Several Tanninolytic Strains Using Coffee Pulp Procyanidins
Procyanidins are bioactive molecules with industrial and pharmaceutical relevance, they are present in recalcitrant agro-industrial wastes that are difficult to degrade. In this study, we evaluated the potential consumption of procyanidins from Aspergillus niger and Trichoderma harzianum strains in submerged fermentations. For this purpose, a culture medium containing salts, glucose, and procyanidins was formulated, where procyanidins were added to the medium after the near-total consumption of glucose. The submerged cultures were carried out in amber flasks at 30 °C and 120 rpm. The addition of procyanidins to the culture medium increased the formation of micellar biomass for all the strains used. The use of glucose affected the growth of A. niger GH1 and A. niger HS1, however, in these assays, a total consumption of procyanidins was obtained. These results show that the consumption of procyanidins by fungal strains in submerged fermentations was influenced by the pH, the use of glucose as the first source of carbon, and the delayed addition of procyanidins to the medium. The study showed that A. niger and T. harzianum strains can be used as a natural strategy for the consumption or removal of procyanidins present in recalcitrant residues of risk to the environment and human health
Kinetic Study of Fungal Growth of Several Tanninolytic Strains Using Coffee Pulp Procyanidins
Procyanidins are bioactive molecules with industrial and pharmaceutical relevance, they are present in recalcitrant agro-industrial wastes that are difficult to degrade. In this study, we evaluated the potential consumption of procyanidins from Aspergillus niger and Trichoderma harzianum strains in submerged fermentations. For this purpose, a culture medium containing salts, glucose, and procyanidins was formulated, where procyanidins were added to the medium after the near-total consumption of glucose. The submerged cultures were carried out in amber flasks at 30 °C and 120 rpm. The addition of procyanidins to the culture medium increased the formation of micellar biomass for all the strains used. The use of glucose affected the growth of A. niger GH1 and A. niger HS1, however, in these assays, a total consumption of procyanidins was obtained. These results show that the consumption of procyanidins by fungal strains in submerged fermentations was influenced by the pH, the use of glucose as the first source of carbon, and the delayed addition of procyanidins to the medium. The study showed that A. niger and T. harzianum strains can be used as a natural strategy for the consumption or removal of procyanidins present in recalcitrant residues of risk to the environment and human health
ENGIU: Encuentro Nacional de Grupos de Investigación de UNIMINUTO.
El desarrollo del prototipo para el sistema de detección de Mina Antipersona
(MAP), inicia desde el semillero ADSSOF perteneciente al programa de Administración en Seguridad y Salud en el trabajo de la UNIMINUTO, se realiza a partir de un
detector de metales que emite una señal audible, que el usuario puede interpretar
como aviso de presencia de un objeto metálico, en este caso una MAP. La señal
audible se interpreta como un dato, como ese dato no es perceptible a 5 metros de
distancia, se implementa el transmisor de Frecuencia Modulada FM por la facilidad
de modulación y la escogencia de frecuencia de transmisión de acuerdo con las
normas y resolución del Ministerio de Comunicaciones; de manera que esta sea la
plataforma base para enviar los datos obtenidos a una frecuencia establecida. La
idea es que el ser humano no explore zonas peligrosas y buscar la forma de crear
un sistema que permita eliminar ese riesgo, por otro lado, buscar la facilidad de uso
de elementos ya disponibles en el mercado