Biocatalytic quantification of α-glucan in marine particulate organic matter.
Marine algae drive the marine carbon cycle, converting carbon dioxide into organic material. A major component of this produced biomass is a variety of glycans. Marine α-glucans include a range of storage glycans from red and green algae, bacteria, fungi, and animals. Although these compounds are li...
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Online Access: | https://doi.org/10.1002/mbo3.1289 https://pubmed.ncbi.nlm.nih.gov/35765187 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9134812/ |
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ftpubmed:35765187 2024-09-15T18:23:46+00:00 Biocatalytic quantification of α-glucan in marine particulate organic matter. Steinke, Nicola Vidal-Melgosa, Silvia Schultz-Johansen, Mikkel Hehemann, Jan-Hendrik 2022-06 https://doi.org/10.1002/mbo3.1289 https://pubmed.ncbi.nlm.nih.gov/35765187 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9134812/ eng eng Wiley https://doi.org/10.1002/mbo3.1289 https://pubmed.ncbi.nlm.nih.gov/35765187 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9134812/ © 2022 The Authors. MicrobiologyOpen published by John Wiley & Sons Ltd. Microbiologyopen ISSN:2045-8827 Volume:11 Issue:3 algae enzymatic hydrolysis glucans marine particulate organic matter polysaccharides quantification Journal Article Research Support, Non-U.S. Gov't 2022 ftpubmed https://doi.org/10.1002/mbo3.1289 2024-08-29T16:03:00Z Marine algae drive the marine carbon cycle, converting carbon dioxide into organic material. A major component of this produced biomass is a variety of glycans. Marine α-glucans include a range of storage glycans from red and green algae, bacteria, fungi, and animals. Although these compounds are likely to account for a high amount of the carbon stored in the oceans they have not been quantified in marine samples so far. Here we present a method to extract and quantify α-glucans (and compare it with the β-glucan laminarin) in particulate organic matter from algal cultures and environmental samples using sequential physicochemical extraction and enzymes as α-glucan-specific probes. This enzymatic assay is more specific and less susceptible to side reactions than chemical hydrolysis. Using HPAEC-PAD to detect the hydrolysis products allows for a glycan quantification in particulate marine samples down to a concentration of ≈2 µg/L. We measured glucans in three cultured microalgae as well as in marine particulate organic matter from the North Sea and western North Atlantic Ocean. While the β-glucan laminarin from diatoms and brown algae is an essential component of marine carbon turnover, our results further indicate the significant contribution of starch-like α-glucans to marine particulate organic matter. Henceforth, the combination of glycan-linkage-specific enzymes and chromatographic hydrolysis product detection can provide a powerful tool in the exploration of marine glycans and their role in the global carbon cycle. Article in Journal/Newspaper North Atlantic PubMed Central (PMC) MicrobiologyOpen 11 3 |
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Open Polar |
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PubMed Central (PMC) |
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ftpubmed |
language |
English |
topic |
algae enzymatic hydrolysis glucans marine particulate organic matter polysaccharides quantification |
spellingShingle |
algae enzymatic hydrolysis glucans marine particulate organic matter polysaccharides quantification Steinke, Nicola Vidal-Melgosa, Silvia Schultz-Johansen, Mikkel Hehemann, Jan-Hendrik Biocatalytic quantification of α-glucan in marine particulate organic matter. |
topic_facet |
algae enzymatic hydrolysis glucans marine particulate organic matter polysaccharides quantification |
description |
Marine algae drive the marine carbon cycle, converting carbon dioxide into organic material. A major component of this produced biomass is a variety of glycans. Marine α-glucans include a range of storage glycans from red and green algae, bacteria, fungi, and animals. Although these compounds are likely to account for a high amount of the carbon stored in the oceans they have not been quantified in marine samples so far. Here we present a method to extract and quantify α-glucans (and compare it with the β-glucan laminarin) in particulate organic matter from algal cultures and environmental samples using sequential physicochemical extraction and enzymes as α-glucan-specific probes. This enzymatic assay is more specific and less susceptible to side reactions than chemical hydrolysis. Using HPAEC-PAD to detect the hydrolysis products allows for a glycan quantification in particulate marine samples down to a concentration of ≈2 µg/L. We measured glucans in three cultured microalgae as well as in marine particulate organic matter from the North Sea and western North Atlantic Ocean. While the β-glucan laminarin from diatoms and brown algae is an essential component of marine carbon turnover, our results further indicate the significant contribution of starch-like α-glucans to marine particulate organic matter. Henceforth, the combination of glycan-linkage-specific enzymes and chromatographic hydrolysis product detection can provide a powerful tool in the exploration of marine glycans and their role in the global carbon cycle. |
format |
Article in Journal/Newspaper |
author |
Steinke, Nicola Vidal-Melgosa, Silvia Schultz-Johansen, Mikkel Hehemann, Jan-Hendrik |
author_facet |
Steinke, Nicola Vidal-Melgosa, Silvia Schultz-Johansen, Mikkel Hehemann, Jan-Hendrik |
author_sort |
Steinke, Nicola |
title |
Biocatalytic quantification of α-glucan in marine particulate organic matter. |
title_short |
Biocatalytic quantification of α-glucan in marine particulate organic matter. |
title_full |
Biocatalytic quantification of α-glucan in marine particulate organic matter. |
title_fullStr |
Biocatalytic quantification of α-glucan in marine particulate organic matter. |
title_full_unstemmed |
Biocatalytic quantification of α-glucan in marine particulate organic matter. |
title_sort |
biocatalytic quantification of α-glucan in marine particulate organic matter. |
publisher |
Wiley |
publishDate |
2022 |
url |
https://doi.org/10.1002/mbo3.1289 https://pubmed.ncbi.nlm.nih.gov/35765187 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9134812/ |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Microbiologyopen ISSN:2045-8827 Volume:11 Issue:3 |
op_relation |
https://doi.org/10.1002/mbo3.1289 https://pubmed.ncbi.nlm.nih.gov/35765187 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9134812/ |
op_rights |
© 2022 The Authors. MicrobiologyOpen published by John Wiley & Sons Ltd. |
op_doi |
https://doi.org/10.1002/mbo3.1289 |
container_title |
MicrobiologyOpen |
container_volume |
11 |
container_issue |
3 |
_version_ |
1810464027335196672 |