Dependence of alcohol binding from aqueous dispersions on physicochemical properties of starch

Binding of alcohols from aqueous dispersions of native cornstarches differing in amylose content was studied by means of capillary gas chromatography. The efficiency of this process was compared with that of binding to gelatinized starches. Studies of native and gelatinized starches showed that the amount of bound substances depended linearly on their initial concentration. Binding of alcohols did not differ in native and gelatinized normal starch and high amylose starch. The efficiency of binding increased with the length of the alkyl substituent. It should be emphasized that the highest efficiency of binding was observed with native starch. Native amylopectin starch was less potent than gelatinized starch in binding hexanol. The degree of alcohol binding was much lower in cryotextures of gelatinized starch.