CAS Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong, 266101, P. R. China.
University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.
Sci Rep. 2016 Aug 26;6:32305. doi: 10.1038/srep32305.
This study investigated the effect of intermittent lighting on the growth performances of a Scenedesmus dimorphus biofilm. Flashing light effect (FLE) is common in traditional suspended cultures of microalgae; yet, publications about this phenomenon, in the context of biofilm cultivation, are scarce. In this work we demonstrate that, thanks to intermittent illumination, it is possible for attached cultivations to fulfill FLE, improve photoefficiency and productivity as well as providing protection from photoinhibition using much lower flashing light frequencies than those usually required with suspended cultures. Medium frequency intermittent lighting (0.1 Hz) guaranteed excellent light integration resulting in 9.13 g m(-2) d(-1) biomass productivity, which was 8.9% higher than with continuous lighting. Results showed that a light fraction value of 0.5 always improved photoefficiency values as related to continuous light with a 118.8% maximum increase.
本研究考察了间歇光照对聚球藻生物膜生长性能的影响。闪光光效（FLE）在传统的微藻悬浮培养中很常见；然而，关于这种现象的出版物，在生物膜培养的背景下，却很少。在这项工作中，我们证明了，由于间歇光照，附着培养可以实现 FLE，提高光电效率和生产力，并提供保护，防止光抑制，使用比通常悬浮培养所需的频率低得多的闪光光频率。中频间歇光照（0.1 Hz）保证了极好的光整合，使生物量生产力达到 9.13 g m(-2) d(-1)，比连续光照高 8.9%。结果表明，光分数值 0.5 总是提高光电效率值，与连续光照相比，最大提高了 118.8%。
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