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Report No.

Cooperative research on radiation processing of natural polysaccharides between VAEC and JAEA

Hiroki, Akihiro; Nagasawa, Naotsugu; Yagi, Toshiaki; Kume, Tamikazu; Yoshii, Fumio; Tamada, Masao

Cooperative research between Vietnam Atomic Energy Commission (VAEC) and JAEA has been performed over a period of six years. In the cooperative research, natural polysaccharides such as alginate, chitin, and chitosan were irradiated by $$gamma$$-ray to produce various functional materials. It was found that the alginate and the chitosan degraded with $$gamma$$-irradiation were effective as a growth promoter for rice and carrot and an anti-bacterial agent, respectively. On the other hand, the hydrogels obtained by $$gamma$$-irradiating carboxymethylchitosan aqueous solution in paste-like state showed a high adsorption capacity for Cu (II) ions as well as the anti-bacterial activity.



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