Abstract
AbstractStarch fractions have been isolated from the underground part of the parasite using hot water and alkali treatments, respectively. Chemical, enzymic and spectroscopic analyses as well as gel chromatography were used to characterize the starch fractions. Both hot water‐(HWS) and alkali‐extracted (AP) starch fractions contain amylose and amylopectin components in different proportions. The water soluble part of alkali‐extracted starch (APS) was well sparated by precipitation with cetyltrimethylammonium bromide into amylose and amylopectin compontents differing in the molecular weight. APS shows a larger contamination with cell wall constituents (protein, lignin, glucuronoxylan and pectin) in comparison with that of the other starch fractions.
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