Starch was characterized for analysis by high-performance size-exclusion chromatography (HPSEC) with detection by multiple-angle laser light-scattering and refractive index. Corn starches (amylopectin-to-amylose ratios of 1:0, 3:1, 1:1, and 3:7), presolubilized potato starch, and potato starch granules were analyzed. For corn starches, analysis by HPSEC revealed that weight average molar mass ( M w ) and z -average root mean square radius of gyration ( R gz ) decreased with increasing percentage of amylose. For potato starches, granules had a much higher M w and R gz than presolubilized starch. All chromatograms were polymodal in nature with at least two high M w amylopectin components. Except for high amylose corn starch, R gz values from this study were comparable with results from an earlier HPSEC/viscometry study. The R gz values from microscopic studies were lower than from chromatographic studies.
No takes yet. Share an insight, caveat, or question.
Fishman et al. (1996) studied this question.
Synapse has enriched 2 closely related papers on similar clinical questions. Consider them for comparative context: