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Acid preservation o...
Acid preservation of cultivated brown algae Saccharina latissima and Alaria esculenta and characterization of extracted alginate and cellulose
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- Nokling-Eide, Katharina (author)
- SINTEF Ind, Dept Biotechnol & Nanomed, Richard Birkelands Vei 3B, N-7034 Trondheim, Norway.;NTNU Norwegian Univ Sci & Technol, Dept Biotechnol & Food Sci, Norwegian Biopolymer Lab NOBIPOL, Sem Saelands Vei 6-8, N-7491 Trondheim, Norway.
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- Tan, Fangchang (author)
- KTH,Glykovetenskap,Albanova VinnExcellence Center for Protein Technology, ProNova
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- Wang, Shennan, Dr. 1992- (author)
- KTH,Glykovetenskap,Albanova VinnExcellence Center for Protein Technology, ProNova
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- Zhou, Qi (author)
- KTH,Albanova VinnExcellence Center for Protein Technology, ProNova,Glykovetenskap
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- Gravdahl, Mina (author)
- NTNU Norwegian Univ Sci & Technol, Dept Biotechnol & Food Sci, Norwegian Biopolymer Lab NOBIPOL, Sem Saelands Vei 6-8, N-7491 Trondheim, Norway.
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- Langeng, Anne-Mari (author)
- SINTEF Ind, Dept Biotechnol & Nanomed, Richard Birkelands Vei 3B, N-7034 Trondheim, Norway.
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- Bulone, Vincent (author)
- KTH,Glykovetenskap,Albanova VinnExcellence Center for Protein Technology, ProNova
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- Aachmann, Finn Lillelund (author)
- NTNU Norwegian Univ Sci & Technol, Dept Biotechnol & Food Sci, Norwegian Biopolymer Lab NOBIPOL, Sem Saelands Vei 6-8, N-7491 Trondheim, Norway.
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- Sletta, Havard (author)
- SINTEF Ind, Dept Biotechnol & Nanomed, Richard Birkelands Vei 3B, N-7034 Trondheim, Norway.
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- Arlov, Oystein (author)
- SINTEF Ind, Dept Biotechnol & Nanomed, Richard Birkelands Vei 3B, N-7034 Trondheim, Norway.
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SINTEF Ind, Dept Biotechnol & Nanomed, Richard Birkelands Vei 3B, N-7034 Trondheim, Norway;NTNU Norwegian Univ Sci & Technol, Dept Biotechnol & Food Sci, Norwegian Biopolymer Lab NOBIPOL, Sem Saelands Vei 6-8, N-7491 Trondheim, Norway. Glykovetenskap (creator_code:org_t)
- Elsevier BV, 2023
- 2023
- English.
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In: Algal Research. - : Elsevier BV. - 2211-9264. ; 71, s. 103057-
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https://doi.org/10.1...
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Abstract
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- Cultivated brown algae represent an important potential source of carbohydrate polymers for packaging and other biobased materials. However, their exploitation is currently limited by a short harvest season and a lack of cost-effective and sustainable methods to preserve biopolymer quality. In the present study, cultivated Saccharina latissima (SL) and Alaria esculenta (AE) were preserved with formic acid at 4, 13 and 20 degrees C for up to 16 weeks prior to extraction and characterization of alginate and cellulose. The data show up to 40 % increased yield of alginate from preserved biomass compared with fresh and non-preserved biomass, primarily due to removal of minerals and other soluble compounds during the acid wash. Acid preservation and storage caused a reduction in alginate weight average molecular weight (Mw) that was mainly dependent on storage temperature and to a lesser extent on storage time; storage at 4 degrees C maintained the Mw of alginates at 350-500 kDa. Preservation had no effect on the guluronate block structure of the extracted alginates, but guluronic acid content and block length increased in the non-preserved samples, presumably due to enzymatic degradation of the alginate's M-rich re-gions. Preservation of the seaweed resulted in an increased cellulose yield compared with fresh and non -preserved biomass, again due to the biomass being reduced during acid wash. The molecular weight and crys-tallinity of cellulose were not altered by the process. Altogether our findings demonstrate that acid preservation at low temperatures can effectively stabilize seaweed biomass while preserving alginate and cellulose quality for biomaterials and other applications.
Subject headings
- NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
Keyword
- Acid preservation
- Alginate
- Brown algae
- Cellulose
- Seaweed cultivation
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Nokling-Eide, Ka ...
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Tan, Fangchang
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Wang, Shennan, D ...
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Zhou, Qi
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Gravdahl, Mina
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Langeng, Anne-Ma ...
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show more...
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Bulone, Vincent
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Aachmann, Finn L ...
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Sletta, Havard
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Arlov, Oystein
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Polymer Chemistr ...
- Articles in the publication
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Algal Research
- By the university
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Royal Institute of Technology