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espanolLos sistemas basados en el uso de microalgas para la obtencion de bioproductos son considerados un area prometedora para aplicaciones industriales. El objetivo del trabajo fue evaluar la produccion de ficobiliproteinas y clorofila-a cuando Aphanothece microscopica Nageli es cultivada en sistemas autotroficos y heterotroficos. Para ello, se desarrollaron sistemas de cultivos heterotroficos (en ausencia de luz) y autotroficos (2 klux de intensidad luminosa) en biorreactores a pH 7,6, 20 °C, 1 vvm de aireacion, empleando como medios de cultivo un efluente de industria lactea con relacion C/N 20 y N/P 10, y BG11. Inoculo inicial 200 mg/L. Se efectuo el monitoreo de concentraciones de clorofila-a y ficobiliproteinas en fase logaritmica y estacionaria. Se observaron las mayores concentraciones de pigmento en la fase logaritmica: mayores concentraciones de clorofila-a en cultivos autotroficos y predominio de aloficocianina y ficoeritrina en cultivos heterotroficos. Los resultados mostraron el efecto de las variables en estudio para la produccion de pigmentos, en la fase de crecimiento logaritmico, lo que indica la posibilidad de producir en sistemas heterotroficos de Aphanothece microscopica Nageli, aproximadamente 3.185 ton/ ano de biomasa, para 3.127 kg/ano clorofila, 232.825 kg/ano ficocianina, 47.775 kg/ano aloficocianina y 7.008 kg/ano ficoeritrina, cuando se utiliza efluente de industria lactea como medio de cultivo. EnglishThe systems that use microalgae to obtain bioproducts are considered a promising area for industrial applications. The objective of this work was to evaluate the production of phycobiliproteins and chlorophyll-a by Aphanothece microscopica Nageli, when it is cultivated in autotrophic and heterotrophic systems. Thus, the cultures were grown in heterotrophic (absence of light) and autotrophic (2 klux of light intensity) system, in bioreactors at pH 7.6, 20 oC, 1 vvm aeration, using a dairy industry effluent, with C/N 20 and N/P 10, and BG11 as culture media. Initial inoculum 200 mg/L. The concentrations of chlorophyll-a-andphycobiliproteins in logarithmic and stationary phase were monitored. The highest concentrations of pigment were observed in logarithmic phase: The highest concentrations of chlorophyll-a in autotrophic cultures, and predominance of allophycocyanin and phycoerythrin in heterotrophic cultures. The results show the effect of the variables under study for pigment production, bearing in mind the logarithmic growth phase, suggesting the possibility of producing in heterotrophic systems by Aphanothece microscopica Nageli, around 3,185 ton/year of biomass, and 3,127 kg/year of chlorophyll, 232,825 kg/year of phycocyanin, 47,775 kg/year of allophycocyanin and 7,008 kg/year of phycoerythrin, when dairy effluent is used as culture medium

Producción de pigmentos por Aphanothece microscópica Nageli a partir de residuos industriales lácteos