design and synthesis of natural polymer derived from wheat starch

this reaction, first part of the synthesis starch octenyl succinic anhydride were synthesised by addition of 2-octenyl succinic anhydride aqueos solution to suspension modified wheat starch. after this part a certain amount of aluminum sulfate was added to starch octenyl succinic anhydride slurry.the results of sem and ft-ir,²⁷alnmr, hnmr confirmed the fotmation of ester group and the cross-link with al³⁺.aluminum octenyl succinic anhydride (aso) with starch. aso is a unique, hydrophobically modified natural polymer, used in cosmetics and food industry.