Estudio comparativo de tres fertilizantes agrícolas sobre el crecimiento composición bioquímica de Scenedesmus Sp. UGB-RJ3009 en cultivos discontinuos.
Fecha
2018
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Facultad de Ciencias Naturales, Universidad de Guayaquil
Resumen
En este estudio se evaluó medios de cultivo basados en fertilizantes agrícolas (F1, F2 y F3) en diferentes concentraciones (C1, C2 y C3), y su efecto sobre el crecimiento, producción de biomasa y metabolitos primarios en la microalga Scenedesmus sp., en comparación con un medio de cultivo estándar, con el propósito de hallar alternativas más económicas para el cultivo de microalgas. Los cultivos se mantuvieron durante siete días en aireación permanente, irradiancia de 234 μmol fotones m-2s-1 y fotoperiodo de 12:12h. Los tratamientos evaluados tuvieron respuestas diferentes; sin embargo, los valores obtenidos en F1 (C2 y C3) en cuanto al crecimiento y la composición bioquímica de Scenedesmus sp. fueron competitivos en comparación al medio control; tomando en consideración su bajo precio y alta disponibilidad en el mercado, demostrando así que resultan un opción viable y económica para el reemplazo de los medios nutritivos de laboratorio, principalmente en cultivos a gran escala.
In this research, different culture media based on commercial agricultural fertilizers (F1, F2, F3) at 0,25; 0,5 and 1,0 g.L-1 (C1,C2,C3) were evaluated as well as each of their effects on the growth, production of biomass and primary metabolites in the microalga Scenedesmus sp. in batch cultures compared to a standard culture medium, in order to find more affordable alternatives for the cultivation of microalgae. The cultures were maintained for seven days, under photoperiod conditions 12: 12h, constant aeration and at an irradiance of 234 μmol photons m-2 s-1. All the treatments evaluated had a different response; however, the values obtained in F1 (C2 and C3) regarding the growth and biochemical composition of Scenedesmus sp. were competitive with the control medium taking into account their low price and high availability in the market, proving that they are a viable and economical option for the replacement of nutritive laboratory culture media, mainly if large volumes of culture are required.
In this research, different culture media based on commercial agricultural fertilizers (F1, F2, F3) at 0,25; 0,5 and 1,0 g.L-1 (C1,C2,C3) were evaluated as well as each of their effects on the growth, production of biomass and primary metabolites in the microalga Scenedesmus sp. in batch cultures compared to a standard culture medium, in order to find more affordable alternatives for the cultivation of microalgae. The cultures were maintained for seven days, under photoperiod conditions 12: 12h, constant aeration and at an irradiance of 234 μmol photons m-2 s-1. All the treatments evaluated had a different response; however, the values obtained in F1 (C2 and C3) regarding the growth and biochemical composition of Scenedesmus sp. were competitive with the control medium taking into account their low price and high availability in the market, proving that they are a viable and economical option for the replacement of nutritive laboratory culture media, mainly if large volumes of culture are required.
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SCENEDESMUS SP., FERTILIZANTES AGRÍCOLAS, DENSIDAD CELULAR, METABOLITOS PRIMARIOS, PLASTICIDAD FENOTÍPICA