Monochromatic light filters to enhance biomass and carotenoid productivities of Dunaliella salina in raceway ponds

被引：23

作者：

Nwoba, Emeka G. ^{[1
]}

Rohani, Tarannom ^{[1
,2
]}

Raeisossadati, Mohammadjavad ^{[1
]}

Vadiveloo, Ashiwin ^{[1
]}

Bahri, Parisa A. ^{[2
,3
]}

Moheimani, Navid R. ^{[1
,3
]}

机构：

[1] Murdoch Univ, Algae R&D Ctr, 90 South St, Murdoch, WA 6150, Australia

[2] Murdoch Univ, Engn & Energy, Murdoch, WA 6150, Australia

[3] Australia Univ, Ctr Water Energy & Waste, Harry Butler Inst, Murdoch, WA 6150, Australia

来源：

BIORESOURCE TECHNOLOGY | 2021年 / 340卷

关键词：

Light quality; Dunaliella salina; Carotenoid; Spectral filtration; Nutritional content; BIOCHEMICAL-COMPOSITION; LED LIGHT; GROWTH; MICROALGAE; QUALITY; BLUE; WAVELENGTH; RED; PHOTOSYNTHESIS; CULTIVATION;

D O I：

10.1016/j.biortech.2021.125689

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

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.

引用

页数：10

共 48 条

[1] Modified plastic net-houses as alternative agricultural structures for saving energy and water in hot and sunny regions [J].