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.
Full text not available from this repository.Abstract
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).
| Item Type: | Article |
|---|---|
| Funders: | Higher Education Malaysia via Fundamental Research Grant Scheme (FRGS) |
| Additional Information: | Cited by: 0; All Open Access, Hybrid Gold Open Access |
| Uncontrolled Keywords: | Aquaculture; Biofilms; Carbon; Cell Cycle; Chlorella; Microalgae; Malaysia; Anodes; Biocompatibility; Carbon; Cyclic voltammetry; Electron transport properties; Electrophysiology; Microbial fuel cells; Scanning electron microscopy; Tropics; carbon; Algal biotechnology; Biophotovoltaic platform; Carbon anodes; Chlorophyll a; Marine microalgae; Marine microalgal strains; Microalgal cultures; Power generation potential; Renewable energies; Synechococcus; alternative energy; biotechnology; chlorophyll a; electricity generation; microalga; photosynthesis; aquaculture; biofilm; cell cycle; Chlorella; microalga; Biofilms |
| Subjects: | Q Science > Q Science (General) Q Science > QR Microbiology |
| Divisions: | Faculty of Science > Institute of Biological Sciences Deputy Vice Chancellor (Research & Innovation) Office > Institute of Ocean and Earth Sciences |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 15 Nov 2024 03:04 |
| Last Modified: | 15 Nov 2024 03:04 |
| URI: | http://eprints.um.edu.my/id/eprint/44709 |
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