The effect of various pretreatment conditions of brown algae Fucus evanescens, Saccharina japonica, and Sargassum oligocystum on the yield and structural characteristics of fucoidans was studied. The conditions included extraction by aqueous EtOH (70%) and supercritical CO2 with 5% EtOH as solvent and without it. It was shown that highly pure fucoidans from each alga species were similar in yield and structural characteristics for various pretreatment conditions. The exception was 5% EtOH as co-solvent for pretreatment with supercritical CO2, which enabled only highly sulfated fucoidan fractions with homogeneous monosaccharide compositions to be selectively obtained.
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Acknowledgment
The work was supported by grants of the Ministry of Education and Science No. 02.740.11.0777; RFBR No. 12-0400669-a; RFBR No. 12-04-31713-mol_a; and FEB RAS No. 12-III-A-05-057 and the program Molecular and Cellular Biology. We thank E. M. Polyakov and NPO Tandem for supplying the raw material of alga Sj.
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Translated from Khimiya Prirodnykh Soedinenii, No. 6, November–December, 2012, pp. 823–826.
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Men’shova, R.V., Lepeshkin, F.D., Ermakova, S.P. et al. Effect of pretreatment conditions of brown algae by supercritical fluids on yield and structural characteristics of fucoidans. Chem Nat Compd 48, 923–926 (2013). https://doi.org/10.1007/s10600-013-0429-z
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DOI: https://doi.org/10.1007/s10600-013-0429-z