单色光滤光片提高跑道池盐藻生物量和类胡萝卜素产量。
Monochromatic light filters to enhance biomass and carotenoid productivities of Dunaliella salina in raceway ponds.
机构信息
Algae R&D Centre, Murdoch University, 90 South Street, Murdoch, Western Australia 6150, Australia.
Algae R&D Centre, Murdoch University, 90 South Street, Murdoch, Western Australia 6150, Australia; Engineering and Energy, Murdoch University, Western Australia 6150, Australia.
出版信息
Bioresour Technol. 2021 Nov;340:125689. doi: 10.1016/j.biortech.2021.125689. Epub 2021 Jul 30.
Monochromatic blue and red wavelengths are more efficient for light to algal biomass conversion than full-spectrum sunlight. In this study, monochromatic light filters were used to down-regulate natural sunlight to blue (400-520 nm) and red (600-700 nm) wavelengths to enhance biomass productivity of Dunaliella salina in outdoor raceway ponds. Growth indices such as cell size, pigment concentrations, biomass yield, photosynthetic efficiency, and major nutritional compositions were determined and compared against a control receiving unfiltered sunlight. Results showed that red light increased biomass productivity, lipid, and carotenoid contents but decreased cell volume, chlorophyll production, and cell weight. Conversely, blue light increased cell volume by 200%, cell weight by 68%, and enhanced chlorophyll a and protein contents by 35% and 51%, respectively, over red light. Compared to the control treatment, photoinhibition of D. salina cells at noon sunshine was decreased 60% by utilizing optical filters on the pond's surface.
单色的蓝色和红色波长比全光谱阳光更有利于将光转化为藻类生物质。在这项研究中，单色光滤光片被用来将自然阳光调节为蓝色（400-520nm）和红色（600-700nm）波长，以提高室外跑道池塘中盐藻的生物质生产力。测定了细胞大小、色素浓度、生物量产量、光合作用效率和主要营养成分等生长指标，并与接收未过滤阳光的对照进行了比较。结果表明，红光增加了生物质生产力、脂质和类胡萝卜素含量，但降低了细胞体积、叶绿素产量和细胞重量。相反，蓝光使细胞体积增加了 200%，细胞重量增加了 68%，并分别使叶绿素 a 和蛋白质含量增加了 35%和 51%，高于红光。与对照处理相比，利用池塘表面的光学滤光片，中午阳光对盐藻细胞的光抑制降低了 60%。
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