Bioremediation using an Antarctic microbial consortium for wastewater treatment
Abstract Efficient biotechnological processes are necessary in environments impacted by toxic compounds to reduce environmental impacts. Microorganisms from cold environments have been drawing attention due to the characteristics of synthesizing enzymes at low temperatures. We evaluated the producti...
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Academia Brasileira de Ciências
2025-07-01
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| Series: | Anais da Academia Brasileira de Ciências |
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| author | ALBA TERESA A. SILVA VIVIANA L. COLORADO ANA CAROLINE DE LIMA RAISSA ESMERALDA C. ESPEJO LAYSSA M. CARLOS LUIZ H. ROSA MICHEL R.Z. PASSARINI |
| author_facet | ALBA TERESA A. SILVA VIVIANA L. COLORADO ANA CAROLINE DE LIMA RAISSA ESMERALDA C. ESPEJO LAYSSA M. CARLOS LUIZ H. ROSA MICHEL R.Z. PASSARINI |
| author_sort | ALBA TERESA A. SILVA |
| collection | DOAJ |
| description | Abstract Efficient biotechnological processes are necessary in environments impacted by toxic compounds to reduce environmental impacts. Microorganisms from cold environments have been drawing attention due to the characteristics of synthesizing enzymes at low temperatures. We evaluated the production of enzymes and the discoloration of dyes to develop a microbial consortium recovered from sediments from maritime Antarctica. A total of 40 bacteria and 24 fungi were evaluated. Eleven bacteria (27.5%) produced protease, 13 (32.5%) amylase activities. Nine (37.5%) fungi produced cellulase, lipase, and ligninase. The highest Enzymatic Index for protease (4.1), lipase (1.8), and amylase (4.88) were detected for <italic>Cladosporium</italic> sp. (FAR18) and a bacterium (BAD38), respectively. Four bacteria and one fungus were submitted to urban and industrial effluent discoloration assay. <italic>Psychrobacter</italic> sp. BAD 12, <italic>Exiguobacterium oxidotolerans</italic> BAD 40, and <italic>Cladosporium</italic> sp. FAR 18 displayed the highest discoloration values for textile effluent. In addition, <italic>E. oxidotolerans</italic> BAD 40 was able to discolor domestic effluent by a 0.76% reduction. The highest value of discoloration of the textile effluent by the microbial consortium was 12.06% after five days. Results indicate that bacteria and fungi from the Antarctic continent may represent an alternative to bioremediation processes in cold environments contaminated with industrial and/or urban effluents. |
| format | Article |
| id | doaj-art-79f2abd515de4b6a89e5aa59d7ffb8b8 |
| institution | DOAJ |
| issn | 1678-2690 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Academia Brasileira de Ciências |
| record_format | Article |
| series | Anais da Academia Brasileira de Ciências |
| spelling | doaj-art-79f2abd515de4b6a89e5aa59d7ffb8b82025-08-20T03:11:46ZengAcademia Brasileira de CiênciasAnais da Academia Brasileira de Ciências1678-26902025-07-0197310.1590/0001-3765202520240151Bioremediation using an Antarctic microbial consortium for wastewater treatmentALBA TERESA A. SILVAhttps://orcid.org/0009-0000-1313-3978VIVIANA L. COLORADOhttps://orcid.org/0000-0001-9190-1792ANA CAROLINE DE LIMAhttps://orcid.org/0009-0001-7925-5588RAISSA ESMERALDA C. ESPEJOhttps://orcid.org/0009-0003-7249-1478LAYSSA M. CARLOShttps://orcid.org/0000-0002-5808-2083LUIZ H. ROSAhttps://orcid.org/0000-0001-9749-5182MICHEL R.Z. PASSARINIhttps://orcid.org/0000-0002-8614-1896Abstract Efficient biotechnological processes are necessary in environments impacted by toxic compounds to reduce environmental impacts. Microorganisms from cold environments have been drawing attention due to the characteristics of synthesizing enzymes at low temperatures. We evaluated the production of enzymes and the discoloration of dyes to develop a microbial consortium recovered from sediments from maritime Antarctica. A total of 40 bacteria and 24 fungi were evaluated. Eleven bacteria (27.5%) produced protease, 13 (32.5%) amylase activities. Nine (37.5%) fungi produced cellulase, lipase, and ligninase. The highest Enzymatic Index for protease (4.1), lipase (1.8), and amylase (4.88) were detected for <italic>Cladosporium</italic> sp. (FAR18) and a bacterium (BAD38), respectively. Four bacteria and one fungus were submitted to urban and industrial effluent discoloration assay. <italic>Psychrobacter</italic> sp. BAD 12, <italic>Exiguobacterium oxidotolerans</italic> BAD 40, and <italic>Cladosporium</italic> sp. FAR 18 displayed the highest discoloration values for textile effluent. In addition, <italic>E. oxidotolerans</italic> BAD 40 was able to discolor domestic effluent by a 0.76% reduction. The highest value of discoloration of the textile effluent by the microbial consortium was 12.06% after five days. Results indicate that bacteria and fungi from the Antarctic continent may represent an alternative to bioremediation processes in cold environments contaminated with industrial and/or urban effluents.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652025000300902&lng=en&tlng=enCold microbial consortiumAntarcticadyesleachatepsychrophilic |
| spellingShingle | ALBA TERESA A. SILVA VIVIANA L. COLORADO ANA CAROLINE DE LIMA RAISSA ESMERALDA C. ESPEJO LAYSSA M. CARLOS LUIZ H. ROSA MICHEL R.Z. PASSARINI Bioremediation using an Antarctic microbial consortium for wastewater treatment Anais da Academia Brasileira de Ciências Cold microbial consortium Antarctica dyes leachate psychrophilic |
| title | Bioremediation using an Antarctic microbial consortium for wastewater treatment |
| title_full | Bioremediation using an Antarctic microbial consortium for wastewater treatment |
| title_fullStr | Bioremediation using an Antarctic microbial consortium for wastewater treatment |
| title_full_unstemmed | Bioremediation using an Antarctic microbial consortium for wastewater treatment |
| title_short | Bioremediation using an Antarctic microbial consortium for wastewater treatment |
| title_sort | bioremediation using an antarctic microbial consortium for wastewater treatment |
| topic | Cold microbial consortium Antarctica dyes leachate psychrophilic |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652025000300902&lng=en&tlng=en |
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