“…These include starch coupled with Remazol brilliant blue (62, 113, 114); amylose linked to Cibachron blue (81,82,127); a cross-linked starch derivative coloured by a dye marker and given the commercial trade name 'Phadebas' (35,74,120);amylopectin dyed with Reactone red 2B (13,14,40,97,143); and amylopectin bound to Procion brilliant red M-2BS (116). In all the above methods, hydroly sis of the substrate leads to the liberation of water-soluble fragments contain ing the dye.…”