D/L-hybrid galactans from red seaweeds: Do they really exist?
Several points concerning the presence in red seaweeds of galactans with cooccurrence of carrageenan and agaran structures (DL-hybrid galactans) are addressed: a. Analysis of D- and L-galactose enantiomers and their methylated and cyclic derivatives. Spectroscopic, enzymatic and chemical methodologi...
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| Autores principales: | , |
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| Formato: | CHAP |
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_97816087_v_n_p355_Ciancia |
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| Sumario: | Several points concerning the presence in red seaweeds of galactans with cooccurrence of carrageenan and agaran structures (DL-hybrid galactans) are addressed: a. Analysis of D- and L-galactose enantiomers and their methylated and cyclic derivatives. Spectroscopic, enzymatic and chemical methodologies. b. Systems of galactans, in which the presence of D- and L-galactose has been determined (DL-galactan systems). c. The possible deviant structures of carrageenans and agarans in DL-hybrid galactans. d. The isolation of "pure" carrageenans and agarans from DL-galactan systems. e. The formation of molecular complexes between carrageenans, agarans and carrageenans/agarans. f. DL-hybrid galactans or molecular complexes: Evidences in favor of each hypothesis. © 2010 by Nova Science Publishers, Inc. All rights reserved. |
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