不同培养方式下微藻油脂生产的能量转化分析。
Energy conversion analysis of microalgal lipid production under different culture modes.
机构信息
State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
出版信息
Bioresour Technol. 2014 Aug;166:625-9. doi: 10.1016/j.biortech.2014.05.106. Epub 2014 Jun 3.
Growth and lipid production performance of Scenedesmus sp. under different culture modes were investigated. Under heterotrophic aerobic mode, algal biomass concentration and total lipid content reached 3.42 g L(-1) and 43.0 wt.%, which were much higher than those in autotrophic aerobic mode (0.55 g L(-1)/20.2 wt.%). The applied light exposure of 7.0 Wm(-2) was beneficial to biomass and lipid accumulation. Mixotrophic aerobic mode produced the highest biomass concentration of 3.84 g L(-1). The biomass was rich in lipids (51.3 wt.%) and low in proteins (17.9 wt.%) and carbohydrates (10.3 wt.%). However, lower algal biomass concentration (2.93 g L(-1)) and total lipid content (36.1 wt.%) were obtained in mixotrophic anaerobic mode. Mixotrophic aerobic mode gave the maximum heat value conversion efficiency of 45.7%. These results indicate that mixotrophic aerobic cultivation was a promising culture mode for lipid production by Scenedesmus sp.
研究了不同培养方式下小球藻的生长和产脂性能。在异养需氧方式下，藻细胞生物量浓度和总脂含量分别达到 3.42g/L 和 43.0wt.%，显著高于自养需氧方式（0.55g/L 和 20.2wt.%）。采用 7.0W/m2 的光照有利于生物量和脂质的积累。好氧混合培养方式获得了最高的生物量浓度 3.84g/L。该生物量富含脂质（51.3wt.%），蛋白质（17.9wt.%）和碳水化合物（10.3wt.%）含量较低。然而，在好氧混合厌氧培养方式中获得的藻细胞生物量浓度（2.93g/L）和总脂含量（36.1wt.%）较低。好氧混合培养方式的最大热值转化率为 45.7%。这些结果表明，好氧混合培养方式是小球藻产脂的一种很有前途的培养方式。
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