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Low-Temperature Biosurfactants from Polar Microbes

Surfactants, both synthetic and natural, are used in a wide range of industrial applications, including the degradation of petroleum hydrocarbons. Organisms from extreme environments are well-adapted to the harsh conditions and represent an exciting avenue of discovery of naturally occurring biosurf...

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Autores principales: Trudgeon, Benjamin, Dieser, Markus, Balasubramanian, Narayanaganesh, Messmer, Mitch, Foreman, Christine M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7466143/
https://www.ncbi.nlm.nih.gov/pubmed/32756528
http://dx.doi.org/10.3390/microorganisms8081183
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author Trudgeon, Benjamin
Dieser, Markus
Balasubramanian, Narayanaganesh
Messmer, Mitch
Foreman, Christine M.
author_facet Trudgeon, Benjamin
Dieser, Markus
Balasubramanian, Narayanaganesh
Messmer, Mitch
Foreman, Christine M.
author_sort Trudgeon, Benjamin
collection PubMed
description Surfactants, both synthetic and natural, are used in a wide range of industrial applications, including the degradation of petroleum hydrocarbons. Organisms from extreme environments are well-adapted to the harsh conditions and represent an exciting avenue of discovery of naturally occurring biosurfactants, yet microorganisms from cold environments have been largely overlooked for their biotechnological potential as biosurfactant producers. In this study, four cold-adapted bacterial isolates from Antarctica are investigated for their ability to produce biosurfactants. Here we report on the physical properties and chemical structure of biosurfactants from the genera Janthinobacterium, Psychrobacter, and Serratia. These organisms were able to grow on diesel, motor oil, and crude oil at 4 °C. Putative identification showed the presence of sophorolipids and rhamnolipids. Emulsion index test (E(24)) activity ranged from 36.4–66.7%. Oil displacement tests were comparable to 0.1–1.0% sodium dodecyl sulfate (SDS) solutions. Data presented herein are the first report of organisms of the genus Janthinobacterium to produce biosurfactants and their metabolic capabilities to degrade diverse petroleum hydrocarbons. The organisms’ ability to produce biosurfactants and grow on different hydrocarbons as their sole carbon and energy source at low temperatures (4 °C) makes them suitable candidates for the exploration of hydrocarbon bioremediation in low-temperature environments.
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spelling pubmed-74661432020-09-14 Low-Temperature Biosurfactants from Polar Microbes Trudgeon, Benjamin Dieser, Markus Balasubramanian, Narayanaganesh Messmer, Mitch Foreman, Christine M. Microorganisms Article Surfactants, both synthetic and natural, are used in a wide range of industrial applications, including the degradation of petroleum hydrocarbons. Organisms from extreme environments are well-adapted to the harsh conditions and represent an exciting avenue of discovery of naturally occurring biosurfactants, yet microorganisms from cold environments have been largely overlooked for their biotechnological potential as biosurfactant producers. In this study, four cold-adapted bacterial isolates from Antarctica are investigated for their ability to produce biosurfactants. Here we report on the physical properties and chemical structure of biosurfactants from the genera Janthinobacterium, Psychrobacter, and Serratia. These organisms were able to grow on diesel, motor oil, and crude oil at 4 °C. Putative identification showed the presence of sophorolipids and rhamnolipids. Emulsion index test (E(24)) activity ranged from 36.4–66.7%. Oil displacement tests were comparable to 0.1–1.0% sodium dodecyl sulfate (SDS) solutions. Data presented herein are the first report of organisms of the genus Janthinobacterium to produce biosurfactants and their metabolic capabilities to degrade diverse petroleum hydrocarbons. The organisms’ ability to produce biosurfactants and grow on different hydrocarbons as their sole carbon and energy source at low temperatures (4 °C) makes them suitable candidates for the exploration of hydrocarbon bioremediation in low-temperature environments. MDPI 2020-08-03 /pmc/articles/PMC7466143/ /pubmed/32756528 http://dx.doi.org/10.3390/microorganisms8081183 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Trudgeon, Benjamin
Dieser, Markus
Balasubramanian, Narayanaganesh
Messmer, Mitch
Foreman, Christine M.
Low-Temperature Biosurfactants from Polar Microbes
title Low-Temperature Biosurfactants from Polar Microbes
title_full Low-Temperature Biosurfactants from Polar Microbes
title_fullStr Low-Temperature Biosurfactants from Polar Microbes
title_full_unstemmed Low-Temperature Biosurfactants from Polar Microbes
title_short Low-Temperature Biosurfactants from Polar Microbes
title_sort low-temperature biosurfactants from polar microbes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7466143/
https://www.ncbi.nlm.nih.gov/pubmed/32756528
http://dx.doi.org/10.3390/microorganisms8081183
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