Abstract
Dialdehyde derivatives of cellulose (GE) and α-cyclodextrin (α-CD) were prepared by the periodate oxidation method. Linkage formation between cellulose dialdehyde (dial-CE) and bovine serum albumin (BSA) proceeded rapidly at pH 9.0 and gave a maximum yield at about 30 hr. Among the various amino compounds tested, ethylenediamine, hexylamine, hexamethylenediamine and BSA were bound effectively to the dial-CE in this order. As compared with the case of dial-CE, reactions between α-CD dialdehyde (dial-CD) and amino compounds proceeded rather slowly. Separation of dial-CD isomers linked with glycine by a DEAE-Sephacel column resulted in several peaks. However, the components of each fraction were not homogeneous. Reactions of dialdehyde derivatives with amino compounds were thought to produce a 4-oxa-azepine-type of complex.
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