The Utilisation of Antarctic Microalgae Isolated from Paradise Bay (Antarctic Peninsula) in the Bioremediation of Diesel
Research has confirmed that the utilisation of Antarctic microorganisms, such as bacteria, yeasts and fungi, in the bioremediation of diesel may provide practical alternative approaches. However, to date there has been very little attention towards Antarctic microalgae as potential hydrocarbon degra...
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2023
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Online Access: | https://doi.org/10.3390/plants12132536 https://doaj.org/article/0c0508c49a8c4fe99a81781d1f9d637e |
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ftdoajarticles:oai:doaj.org/article:0c0508c49a8c4fe99a81781d1f9d637e 2023-07-30T03:59:29+02:00 The Utilisation of Antarctic Microalgae Isolated from Paradise Bay (Antarctic Peninsula) in the Bioremediation of Diesel Nur Diyanah Zamree Nurul Aini Puasa Zheng Syuen Lim Chiew-Yen Wong Noor Azmi Shaharuddin Nur Nadhirah Zakaria Faradina Merican Peter Convey Syahida Ahmad Hasrizal Shaari Alyza Azzura Azmi Siti Aqlima Ahmad Azham Zulkharnain 2023-07-01T00:00:00Z https://doi.org/10.3390/plants12132536 https://doaj.org/article/0c0508c49a8c4fe99a81781d1f9d637e EN eng MDPI AG https://www.mdpi.com/2223-7747/12/13/2536 https://doaj.org/toc/2223-7747 doi:10.3390/plants12132536 2223-7747 https://doaj.org/article/0c0508c49a8c4fe99a81781d1f9d637e Plants, Vol 12, Iss 2536, p 2536 (2023) bioremediation diesel microalgae Antarctic Botany QK1-989 article 2023 ftdoajarticles https://doi.org/10.3390/plants12132536 2023-07-16T00:34:48Z Research has confirmed that the utilisation of Antarctic microorganisms, such as bacteria, yeasts and fungi, in the bioremediation of diesel may provide practical alternative approaches. However, to date there has been very little attention towards Antarctic microalgae as potential hydrocarbon degraders. Therefore, this study focused on the utilisation of an Antarctic microalga in the bioremediation of diesel. The studied microalgal strain was originally obtained from a freshwater ecosystem in Paradise Bay, western Antarctic Peninsula. When analysed in systems with and without aeration, this microalgal strain achieved a higher growth rate under aeration. To maintain the growth of this microalga optimally, a conventional one-factor-at a-time (OFAT) analysis was also conducted. Based on the optimized parameters, algal growth and diesel degradation performance was highest at pH 7.5 with 0.5 mg/L NaCl concentration and 0.5 g/L of NaNO 3 as a nitrogen source. This currently unidentified microalga flourished in the presence of diesel, with maximum algal cell numbers on day 7 of incubation in the presence of 1% v / v diesel. Chlorophyll a , b and carotenoid contents of the culture were greatest on day 9 of incubation. The diesel degradation achieved was 64.5% of the original concentration after 9 days. Gas chromatography analysis showed the complete mineralisation of C 7 –C 13 hydrocarbon chains. Fourier transform infrared spectroscopy analysis confirmed that strain WCY_AQ5_3 fully degraded the hydrocarbon with bioabsorption of the products. Morphological and molecular analyses suggested that this spherical, single-celled green microalga was a member of the genus Micractinium . The data obtained confirm that this microalga is a suitable candidate for further research into the degradation of diesel in Antarctica. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Directory of Open Access Journals: DOAJ Articles Antarctic Antarctic Peninsula Plants 12 13 2536 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
bioremediation diesel microalgae Antarctic Botany QK1-989 |
spellingShingle |
bioremediation diesel microalgae Antarctic Botany QK1-989 Nur Diyanah Zamree Nurul Aini Puasa Zheng Syuen Lim Chiew-Yen Wong Noor Azmi Shaharuddin Nur Nadhirah Zakaria Faradina Merican Peter Convey Syahida Ahmad Hasrizal Shaari Alyza Azzura Azmi Siti Aqlima Ahmad Azham Zulkharnain The Utilisation of Antarctic Microalgae Isolated from Paradise Bay (Antarctic Peninsula) in the Bioremediation of Diesel |
topic_facet |
bioremediation diesel microalgae Antarctic Botany QK1-989 |
description |
Research has confirmed that the utilisation of Antarctic microorganisms, such as bacteria, yeasts and fungi, in the bioremediation of diesel may provide practical alternative approaches. However, to date there has been very little attention towards Antarctic microalgae as potential hydrocarbon degraders. Therefore, this study focused on the utilisation of an Antarctic microalga in the bioremediation of diesel. The studied microalgal strain was originally obtained from a freshwater ecosystem in Paradise Bay, western Antarctic Peninsula. When analysed in systems with and without aeration, this microalgal strain achieved a higher growth rate under aeration. To maintain the growth of this microalga optimally, a conventional one-factor-at a-time (OFAT) analysis was also conducted. Based on the optimized parameters, algal growth and diesel degradation performance was highest at pH 7.5 with 0.5 mg/L NaCl concentration and 0.5 g/L of NaNO 3 as a nitrogen source. This currently unidentified microalga flourished in the presence of diesel, with maximum algal cell numbers on day 7 of incubation in the presence of 1% v / v diesel. Chlorophyll a , b and carotenoid contents of the culture were greatest on day 9 of incubation. The diesel degradation achieved was 64.5% of the original concentration after 9 days. Gas chromatography analysis showed the complete mineralisation of C 7 –C 13 hydrocarbon chains. Fourier transform infrared spectroscopy analysis confirmed that strain WCY_AQ5_3 fully degraded the hydrocarbon with bioabsorption of the products. Morphological and molecular analyses suggested that this spherical, single-celled green microalga was a member of the genus Micractinium . The data obtained confirm that this microalga is a suitable candidate for further research into the degradation of diesel in Antarctica. |
format |
Article in Journal/Newspaper |
author |
Nur Diyanah Zamree Nurul Aini Puasa Zheng Syuen Lim Chiew-Yen Wong Noor Azmi Shaharuddin Nur Nadhirah Zakaria Faradina Merican Peter Convey Syahida Ahmad Hasrizal Shaari Alyza Azzura Azmi Siti Aqlima Ahmad Azham Zulkharnain |
author_facet |
Nur Diyanah Zamree Nurul Aini Puasa Zheng Syuen Lim Chiew-Yen Wong Noor Azmi Shaharuddin Nur Nadhirah Zakaria Faradina Merican Peter Convey Syahida Ahmad Hasrizal Shaari Alyza Azzura Azmi Siti Aqlima Ahmad Azham Zulkharnain |
author_sort |
Nur Diyanah Zamree |
title |
The Utilisation of Antarctic Microalgae Isolated from Paradise Bay (Antarctic Peninsula) in the Bioremediation of Diesel |
title_short |
The Utilisation of Antarctic Microalgae Isolated from Paradise Bay (Antarctic Peninsula) in the Bioremediation of Diesel |
title_full |
The Utilisation of Antarctic Microalgae Isolated from Paradise Bay (Antarctic Peninsula) in the Bioremediation of Diesel |
title_fullStr |
The Utilisation of Antarctic Microalgae Isolated from Paradise Bay (Antarctic Peninsula) in the Bioremediation of Diesel |
title_full_unstemmed |
The Utilisation of Antarctic Microalgae Isolated from Paradise Bay (Antarctic Peninsula) in the Bioremediation of Diesel |
title_sort |
utilisation of antarctic microalgae isolated from paradise bay (antarctic peninsula) in the bioremediation of diesel |
publisher |
MDPI AG |
publishDate |
2023 |
url |
https://doi.org/10.3390/plants12132536 https://doaj.org/article/0c0508c49a8c4fe99a81781d1f9d637e |
geographic |
Antarctic Antarctic Peninsula |
geographic_facet |
Antarctic Antarctic Peninsula |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica |
op_source |
Plants, Vol 12, Iss 2536, p 2536 (2023) |
op_relation |
https://www.mdpi.com/2223-7747/12/13/2536 https://doaj.org/toc/2223-7747 doi:10.3390/plants12132536 2223-7747 https://doaj.org/article/0c0508c49a8c4fe99a81781d1f9d637e |
op_doi |
https://doi.org/10.3390/plants12132536 |
container_title |
Plants |
container_volume |
12 |
container_issue |
13 |
container_start_page |
2536 |
_version_ |
1772810328280662016 |