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Evaluation of selected tropical marine microalgal cultures for use in biophotovoltaic platforms

Abstract: In this study, the bioelectrical power generation potential of four tropical marine microalgal strains native to Malaysia was investigated using BPV platforms. Chlorella UMACC 258 produced the highest power density (0.108 mW m−2), followed by Halamphora subtropica UMACC 370 (0.090 mW m−2),...

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Main Authors:	Tay, Zoe Hui-Yee, Ng, Fong-Lee, Thong, Cheng-Han, Lee, Choon-Weng, Gnana kumar, G., Al-Sehemi, Abdullah G., Phang, Siew-Moi
Format:	Article
Published:	Springer 2024
Subjects:	Q Science (General) QR Microbiology
Online Access:	http://eprints.um.edu.my/44709/ https://doi.org/10.1007/s00253-023-12951-0
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spelling	my.um.eprints.447092024-11-15T03:04:12Z http://eprints.um.edu.my/44709/ Evaluation of selected tropical marine microalgal cultures for use in biophotovoltaic platforms Tay, Zoe Hui-Yee Ng, Fong-Lee Thong, Cheng-Han Lee, Choon-Weng Gnana kumar, G. Al-Sehemi, Abdullah G. Phang, Siew-Moi Q Science (General) QR Microbiology Abstract: In this study, the bioelectrical power generation potential of four tropical marine microalgal strains native to Malaysia was investigated using BPV platforms. Chlorella UMACC 258 produced the highest power density (0.108 mW m−2), followed by Halamphora subtropica UMACC 370 (0.090 mW m−2), Synechococcus UMACC 371 (0.065 mW m−2) and Parachlorella UMACC 245 (0.017 mW m−2). The chlorophyll-a (chl-a) content was examined to have a linear positive relationship with the power density (p < 0.05). The photosynthetic performance of strains was studied using the pulse-amplitude modulation (PAM) fluorometer; parameters measured include the following: maximum quantum efficiency (F v/F m), alpha (α), maximum relative electron transport rate (rETRmax), photo-adaptive index (E k) and non-photochemical quenching (NPQ). The F v/F m values of all strains, except Synechococcus UMACC 371, ranged between 0.37 and 0.50 during exponential and stationary growth phases, suggesting their general health during those periods. The low F v/F m value of Synechococcus UMACC 371 was possibly caused by the presence of background fluorescence from phycobilisomes or phycobiliproteins. Electrochemical studies via cyclic voltammetry (CV) suggest the presence of electrochemically active proteins on the cellular surface of strains on the carbon anode of the BPV platform, while morphological studies via field emission scanning electron microscope (FESEM) imaging verify the biocompatibility of the biofilms on the carbon anode. Key points: • Maximum power output of 0.108 mW m −2 is recorded by Chlorella UMACC 258 • There is a positive correlation between chl-a content and power output • Proven biocompatibility between biofilms and carbon anode sans exogenous mediators. © 2024, The Author(s). Springer 2024 Article PeerReviewed Tay, Zoe Hui-Yee and Ng, Fong-Lee and Thong, Cheng-Han and Lee, Choon-Weng and Gnana kumar, G. and Al-Sehemi, Abdullah G. and Phang, Siew-Moi (2024) Evaluation of selected tropical marine microalgal cultures for use in biophotovoltaic platforms. Applied Microbiology and Biotechnology, 108 (1). 1 – 14. ISSN 0175-7598, DOI https://doi.org/10.1007/s00253-023-12951-0 <https://doi.org/10.1007/s00253-023-12951-0>. https://doi.org/10.1007/s00253-023-12951-0 10.1007/s00253-023-12951-0
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	Q Science (General) QR Microbiology
spellingShingle	Q Science (General) QR Microbiology Tay, Zoe Hui-Yee Ng, Fong-Lee Thong, Cheng-Han Lee, Choon-Weng Gnana kumar, G. Al-Sehemi, Abdullah G. Phang, Siew-Moi Evaluation of selected tropical marine microalgal cultures for use in biophotovoltaic platforms
description	Abstract: In this study, the bioelectrical power generation potential of four tropical marine microalgal strains native to Malaysia was investigated using BPV platforms. Chlorella UMACC 258 produced the highest power density (0.108 mW m−2), followed by Halamphora subtropica UMACC 370 (0.090 mW m−2), Synechococcus UMACC 371 (0.065 mW m−2) and Parachlorella UMACC 245 (0.017 mW m−2). The chlorophyll-a (chl-a) content was examined to have a linear positive relationship with the power density (p < 0.05). The photosynthetic performance of strains was studied using the pulse-amplitude modulation (PAM) fluorometer; parameters measured include the following: maximum quantum efficiency (F v/F m), alpha (α), maximum relative electron transport rate (rETRmax), photo-adaptive index (E k) and non-photochemical quenching (NPQ). The F v/F m values of all strains, except Synechococcus UMACC 371, ranged between 0.37 and 0.50 during exponential and stationary growth phases, suggesting their general health during those periods. The low F v/F m value of Synechococcus UMACC 371 was possibly caused by the presence of background fluorescence from phycobilisomes or phycobiliproteins. Electrochemical studies via cyclic voltammetry (CV) suggest the presence of electrochemically active proteins on the cellular surface of strains on the carbon anode of the BPV platform, while morphological studies via field emission scanning electron microscope (FESEM) imaging verify the biocompatibility of the biofilms on the carbon anode. Key points: • Maximum power output of 0.108 mW m −2 is recorded by Chlorella UMACC 258 • There is a positive correlation between chl-a content and power output • Proven biocompatibility between biofilms and carbon anode sans exogenous mediators. © 2024, The Author(s).
format	Article
author	Tay, Zoe Hui-Yee Ng, Fong-Lee Thong, Cheng-Han Lee, Choon-Weng Gnana kumar, G. Al-Sehemi, Abdullah G. Phang, Siew-Moi
author_facet	Tay, Zoe Hui-Yee Ng, Fong-Lee Thong, Cheng-Han Lee, Choon-Weng Gnana kumar, G. Al-Sehemi, Abdullah G. Phang, Siew-Moi
author_sort	Tay, Zoe Hui-Yee
title	Evaluation of selected tropical marine microalgal cultures for use in biophotovoltaic platforms
title_short	Evaluation of selected tropical marine microalgal cultures for use in biophotovoltaic platforms
title_full	Evaluation of selected tropical marine microalgal cultures for use in biophotovoltaic platforms
title_fullStr	Evaluation of selected tropical marine microalgal cultures for use in biophotovoltaic platforms
title_full_unstemmed	Evaluation of selected tropical marine microalgal cultures for use in biophotovoltaic platforms
title_sort	evaluation of selected tropical marine microalgal cultures for use in biophotovoltaic platforms
publisher	Springer
publishDate	2024
url	http://eprints.um.edu.my/44709/ https://doi.org/10.1007/s00253-023-12951-0
_version_	1816130418549719040
score	13.244413

Evaluation of selected tropical marine microalgal cultures for use in biophotovoltaic platforms

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