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Utilising light-emitting diodes of specific narrow wavelengths for the optimization and co-production of multiple high-value compounds in Porphyridium purpureum
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Alla Silkina ,
Darren Oatley-Radcliffe ,
Gareth Llewellyn,
Robert Lovitt
Bioresource Technology, Volume: 221, Pages: 607 - 615
Swansea University Authors:
Thea Coward, Claudio Fuentes Grunewald , Alla Silkina , Darren Oatley-Radcliffe , Gareth Llewellyn, Robert Lovitt
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DOI (Published version): 10.1016/j.biortech.2016.09.093
Abstract
The effect of specific narrow light-emitting diode (LED) wavelengths (red, green, blue) and a combination of LED wavelengths (red, green and blue - RGB) on biomass composition produced by Porphyridium purpureum is studied. Phycobiliprotein, fatty acids, exopolysaccharides, pigment content, and the m...
| Published in: | Bioresource Technology |
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| ISSN: | 0960-8524 |
| Published: |
Elsevier BV
2016
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa30199 |
| Abstract: |
The effect of specific narrow light-emitting diode (LED) wavelengths (red, green, blue) and a combination of LED wavelengths (red, green and blue - RGB) on biomass composition produced by Porphyridium purpureum is studied. Phycobiliprotein, fatty acids, exopolysaccharides, pigment content, and the main macromolecules composition were analysed to determine the effect of wavelength on multiple compounds of commercial interest. The results demonstrate that green light plays a significant role in the growth of rhodophyta, due to phycobiliproteins being able to harvest green wavelengths where chlorophyll pigments absorb poorly. However, under multi-chromatic LED wavelengths, P. purpureum biomass accumulated the highest yield of valuable products such as eicosapentaenoic acid (~2.9 %DW), zeaxanthin (~586 μg g− 1 DW), β-carotene (397 μg g− 1 DW), exopolysaccharides (2.05 g/L-1), and phycobiliproteins (~ 4.8 % DW). This increased accumulation is likely to be the combination of both photo-adaption and photo-protection, under the combined specific wavelengths employed. |
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| Keywords: |
Porphyridium, Phycobiliproteins, Fatty acids, Pigments, FTIR, Exopolysaccharides |
| College: |
Faculty of Science and Engineering |
| Start Page: |
607 |
| End Page: |
615 |