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Search: id:"swepub:oai:research.chalmers.se:212d2356-668c-4354-afd6-641d53aec7d2" > Composition and str...

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Composition and structure of cell wall ulvans recovered from Ulva spp. along the Swedish west coast

Wahlström, Niklas (author)
KTH,Fiber- och polymerteknologi,Kungliga Tekniska Högskolan (KTH),Royal Institute of Technology (KTH)
Nylander, Filip, 1986 (author)
Chalmers tekniska högskola,Chalmers University of Technology,Chalmers Univ Technol, Chem & Chem Engn Organ Chem, SE-41296 Gothenburg, Sweden.
Malmhäll Bah, Eric, 1989 (author)
Chalmers tekniska högskola,Chalmers University of Technology,Chalmers Univ Technol, Biol & Biol Engn Ind Biotechnol, SE-41296 Gothenburg, Sweden.
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Sjövold, Karin, 1991 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Edlund, Ulrica, 1972- (author)
KTH,Polymerteknologi,Kungliga Tekniska Högskolan (KTH),Royal Institute of Technology (KTH)
Westman, Gunnar, 1964 (author)
Chalmers tekniska högskola,Chalmers University of Technology,Chalmers Univ Technol, Chem & Chem Engn Organ Chem, SE-41296 Gothenburg, Sweden.
Albers, Eva, 1966 (author)
Chalmers tekniska högskola,Chalmers University of Technology,Chalmers Univ Technol, Biol & Biol Engn Ind Biotechnol, SE-41296 Gothenburg, Sweden.
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 (creator_code:org_t)
Elsevier BV, 2020
2020
English.
In: Carbohydrate Polymers. - : Elsevier BV. - 0144-8617 .- 1879-1344. ; 233
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • The cell wall polysaccharide ulvan was isolated from two species of the seaweed Ulva collected along the Swedish west coast. Acidic extraction was benchmarked against hot water extraction with enzymatic purification and against commercial ulvan. Extracted ulvan contained 11–18 % g/g of ash, some protein (up to 1.3 % g N/g) but minimal colored impurities. The ulvans had high molecular weights (660,000–760,000 g/mol) and were composed of 77–79 % g/g carbohydrates, mainly rhamnose, xylose, glucose, glucuronic acid, and iduronic acid. The extraction protocol and the ulvan source strongly impact the molecular weight and the chemical composition. Acidic extraction caused almost complete desulfation of the isolated ulvan while the other method preserved a significant degree of SO3 substituents. Elemental analysis of ash remaining after thermal degradation showed presence of common mineral elements such as Na, Ca, Mg, Al, and K, but none of the heavy metals Pb, Hg, or As.

Subject headings

NATURVETENSKAP  -- Kemi -- Analytisk kemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences -- Analytical Chemistry (hsv//eng)
TEKNIK OCH TEKNOLOGIER  -- Kemiteknik -- Polymerteknologi (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Chemical Engineering -- Polymer Technologies (hsv//eng)
NATURVETENSKAP  -- Biologi -- Mikrobiologi (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences -- Microbiology (hsv//eng)
MEDICIN OCH HÄLSOVETENSKAP  -- Medicinska och farmaceutiska grundvetenskaper (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Basic Medicine (hsv//eng)

Keyword

Structure
Ulvan
Sulfation
Extraction
Composition
Ulva spp.

Publication and Content Type

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