
%0 Journal Article
%A Brasch, DJ 
%A Chuah, C 
%A Melton, LD 
%T Formolysis studies on some polysaccharides from red seaweeds
%J Australian Journal of Chemistry
%D 1984/07/01
%V 37
%N 7
%P 1539-1544
%K 
%R https://doi.org/10.1071/CH9841539
%U https://www.publish.csiro.au/paper/CH9841539 
%X Formolysis of the permethylated agaroses from marine algae of the Pterocladia species and Gracilaria secundata, and of the permethylated porphyran from Porphyra columbina, resulted in a much higher recovery of 3,6-anhydro-2-O-methyl-L-galactosyl (relative to methylated D-galactosyl) derivatives than was obtained from conventional methylation analyses. The formolysis method, when followed by sulfuric acid hydrolyses, provided a novel method for the estimation of 3,6-anhydro-L-galactose residues in these agar-type polysaccharides. The 3,6-anhydro-2-O-methyl-L-galactose was determined by gas chromatography of its alditol acetate, and identified by g.l.c./m.s. 
