TY - JOUR
T1 - Sulfated β-d-mannan from green seaweed Codium vermilara
AU - Fernández, Paula Virginia
AU - Estevez, José Manuel
AU - Cerezo, Alberto Saúl
AU - Ciancia, Marina
N1 - Funding Information:
This work was supported with grants from National Research Council of Argentina, CONICET ( PIP 559-2009 to M.C. and PIP 071-2010 to J.M.E.), and the National Agency for Promotion of Science and Technology, ANPCYT ( PICT 2008-0500 to M.C. and PICT 2010-0658 to J.M.E.), and University of Buenos Aires ( UBACyT 2010-2012, G058 ).
PY - 2012/1/4
Y1 - 2012/1/4
N2 - β-(1 → 4)-d-Mannans constitute the major component of the cell wall of seaweeds of the genus Codium and replace cellulose as the major fibrillar component. They were found as major constituents of the hot water extracts of green seaweed Codium vermilara. By anion exchange chromatography of the first hot water extract, a pure sulfated mannan with a molar ratio carbohydrates:sulfate of 2.7:1 was isolated. The sulfate groups are linked to C-2 of 23% of the mannose units, while most of these units are not substituted. This degree of sulfation would explain the higher solubility of the polymer, compared to that of the non-sulfated fibrillar mannan. Taking into account that the fibrillar polysaccharides form two external layers in the cell wall, while the sulfated polymers are forming an amorphous central layer, it is postulated that these sulfated mannans could act as an interphase region between the neutral and acidic layers.
AB - β-(1 → 4)-d-Mannans constitute the major component of the cell wall of seaweeds of the genus Codium and replace cellulose as the major fibrillar component. They were found as major constituents of the hot water extracts of green seaweed Codium vermilara. By anion exchange chromatography of the first hot water extract, a pure sulfated mannan with a molar ratio carbohydrates:sulfate of 2.7:1 was isolated. The sulfate groups are linked to C-2 of 23% of the mannose units, while most of these units are not substituted. This degree of sulfation would explain the higher solubility of the polymer, compared to that of the non-sulfated fibrillar mannan. Taking into account that the fibrillar polysaccharides form two external layers in the cell wall, while the sulfated polymers are forming an amorphous central layer, it is postulated that these sulfated mannans could act as an interphase region between the neutral and acidic layers.
KW - β-Mannan
KW - Codium
KW - Green seaweed
KW - Sulfated polysaccharide
UR - http://www.scopus.com/inward/record.url?scp=80054726035&partnerID=8YFLogxK
U2 - 10.1016/j.carbpol.2011.06.063
DO - 10.1016/j.carbpol.2011.06.063
M3 - Article
AN - SCOPUS:80054726035
SN - 0144-8617
VL - 87
SP - 916
EP - 919
JO - Carbohydrate Polymers
JF - Carbohydrate Polymers
IS - 1
ER -