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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 / Thea Coward; Claudio Fuentes Grunewald; Alla Silkina; Darren Oatley-Radcliffe; Gareth Llewellyn; Robert Lovitt

Bioresource Technology, Volume: 221, Pages: 607 - 615

Swansea University Authors: Claudio, Fuentes Grunewald, Alla, Silkina, Darren, Oatley-Radcliffe, Robert, Lovitt

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...

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Published in: Bioresource Technology
ISSN: 0960-8524
Published: 2016
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa30199
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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.
Keywords: Porphyridium, Phycobiliproteins, Fatty acids, Pigments, FTIR, Exopolysaccharides
College: College of Engineering
Start Page: 607
End Page: 615