Formation of supramolecular structures of aroma compounds with polysaccharides of corn starch cryotextures

The binding absorption of individual alcohols, ketones, alkyl acetates and their mixtures - used as aroma compounds - from aqueous solutions by corn s tarch cryotextures was studied by capillary gas chromatography at different starting concentrations of the odourants (1-25 mmol/L). The amount of comp ound sorbed by the cryotextures increases with concentration of this compou nd in the initial sol and increasing length of the alkyl chain in the corre sponding compound. Linear equations describing the concentration dependence were proposed. The presence of octanol in the mixture increases the bindin g of hexanol as compared to hexanol alone. The methods of scanning electron microscopy (SEM), X-ray photoelectron spectroscopy, differential scanning microcalorimetry (DSC) and scanning tunneling microscopy (STM) were used fo r estimation of the microstructure of sols, and cryotextures, and for the d etermination of supramolecular complex formation in the systems odourant/cr yotexture and odourant/ sol. It was shown that waxy corn cryotextures do no t form supramolecular complexes with aroma compounds.