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首页> 外文期刊>Journal of Biotechnology >Lutein production by Muriellopsis sp in an outdoor tubular photobioreactor
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Lutein production by Muriellopsis sp in an outdoor tubular photobioreactor

机译：Muriellopsis sp在室外管状光生物反应器中生产叶黄素

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摘要

The effect of dilution rate, mixing and daily solar cycles on lutein and biomass productivity of the green unicellular alga Muriellopsis sp. has been studied, throughout the year, in an outdoor tubular photobioreactor. Highest productivity values, for both lutein (about 180 mg m(-2) per day) and biomass (about 40 g (dry weight) m(-2) per day) were achieved on May and July. Values for the optimal dilution rate varied, being lower in May (0.06 h(-1)) than in November (0.09 h(-1)). Similar values for photosynthetic efficiency (about 4%) were recorded throughout the year, indicating that optimization of culture conditions was achieved for each experimental period. Along the daily solar cycle, there was a fast increase of lutein content of Muriellopsis sp. in response to irradiance during the early hours of daytime, with maximal lutein content (about 6 mg (g dry weight)(-1)) being recorded at noon, and decreasing slowly, thereafter. An increase in cell growth was observed following the establishment of maximum lutein/chlorophyll ratio, which might indicate a role for lutein in protecting cells from photodamage.
机译：稀释率，混合和日照周期对叶绿素和绿色单细胞藻类Muriellopsis sp。的生物量生产力的影响。全年都在室外管状光生物反应器中进行了研究。叶黄素（每天约180 mg m（-2））和生物质（每天约40 g（干重）m（-2））都达到了最高的生产率值。最佳稀释率的值有所不同，5月（0.06 h（-1））低于11月（0.09 h（-1））。全年记录了相似的光合作用效率值（约4％），表明在每个实验阶段均实现了最佳培养条件。在每天的太阳周期中，Muriellopsis sp。的叶黄素含量迅速增加。响应于白天早些时候的辐照，中午记录最大的叶黄素含量（约6 mg（克干重）（-1）），此后缓慢下降。建立最大的叶黄素/叶绿素比例后，观察到细胞生长增加，这可能表明叶黄素在保护细胞免于光损伤中的作用。

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