MACIEJ FIEDOROWICZ 1a) , JANUSZ KAPUOENIAK 2) , STANIS£AWA KAROLCZYK-KOSTUCH 1a) , GOHAR KHACHATRYAN 1a) , STANIS£AW KOWALSKI 1b) , ANDRZEJ PARA 1a) , MAREK SIKORA 1b) , HANNA STAROSZCZYK 1a) , JOANNA SZYMOÑSKA 1a) , PIOTR TOMASIK 1a) *) Selected novel materials from polysaccharides Summary-Blending of starch with some polysaccharide gums can provide complexes improving flow behavior and textural properties of starch pastes. Either deep freezing and thawing or controlled soaking of starch granules in water improves their surface sorption and is making them effective natural microcapsules. The efficient microencapsulation can also be achieved by a rapid microwave heating of granular starch in suspension of the compounds microencapsulation of which is attempted. The microwave heating of starch blended with generated in situ Mg(HSO4)2 as well as Na2SeO3 or Na2SeO4 provided a wasteless, solid state esterification of starch. Magnesium salts of starch sulphate are potential plasticizers for hydraulic binders, and selenated starch can be considered as a source of bioacceptable selenium for yeast and other organisms. The oxidation of starch with periodate with electrochemical recovery of periodate provided an easy access to dialdehyde starch. It was transformed into starch dialdehyde dihydrazone, dioxime, disemicarbazone, and dithiosemicarbazone. These derivatives bind numerous metal ions forming complexes. Dialdehyde starch disemicarbazone applied to a soil contaminated with heavy metals inhibited heavy metal uptake by maize grown on that soil.

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