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首页> 外文期刊>Bioprocess and Biosystems Engineering >Nutrient composition of culture media induces different patterns of CO2 fixation from biogas and biomass production by the microalga Scenedesmus obliquus U169
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Nutrient composition of culture media induces different patterns of CO2 fixation from biogas and biomass production by the microalga Scenedesmus obliquus U169

机译：培养基的营养成分可通过微藻斜SceneU169产生的沼气和生物质产生不同的二氧化碳固定模式

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摘要

Microalgae are considered as a promising biotechnological strategy to capture CO2 from biogas, producing biomass with valuable energetic compounds. This study has evaluated the biotechnological potential to fix CO2 from biogas and biomass production by Scenedesmus obliquus cultured in four different formulations of culture media, C30, Bristol, Bold 3N, and C30+M, as well as the effect of methane (CH4) of biogas during CO2 fixation and biomass production. The results obtained showed that different nutrient composition and concentration of culture media, mainly micronutrient and vitamin concentrations, induced different patterns of CO2 fixation from biogas and biomass production in S. obliquus. The highest CO2 fixation (23.03 +/- 0.24%) and biomass production (4.63 +/- 0.31 g L-1) were attained in the microalgae growing in C30+M medium, accumulating mainly proteins. Moreover, these results demonstrated that the CH4 of biogas did not affect CO2 fixation from biogas and biomass production by S. obliquus. Overall, these results demonstrated that a culture medium with a balanced nutrient supply is crucial to increasing the biotechnological potential of microalgae to fix CO2 from biogas.
机译：微藻被认为是一种有前途的生物技术策略，可以从沼气中捕获二氧化碳，从而产生具有有价值的高能化合物的生物质。这项研究评估了在四种不同的培养基配方C30，Bristol，Bold 3N和C30 + M中培养的斜生Scenedesmus obliquus固定沼气和生物质生产中的CO2的生物技术潜力，以及甲烷（CH4）的影响。固定二氧化碳和生产生物质过程中产生沼气。结果表明，不同的营养成分和培养基浓度，主要是微量营养素和维生素的浓度，会导致斜生链球菌沼气和生物量产生的二氧化碳固定方式不同。在C30 + M培养基中生长的微藻中，最高的CO2固定率（23.03 +/- 0.24％）和生物量产生（4.63 +/- 0.31 g L-1），主要是蛋白质的积累。此外，这些结果表明沼气中的CH4不会影响斜生链球菌产生的沼气和生物质对二氧化碳的固定作用。总体而言，这些结果表明，具有均衡营养供应的培养基对于提高微藻固定沼气中CO2的生物技术潜力至关重要。

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