Enzymatic degradation of ultrathin multilayer films composed of polysaccharides

Kyoko Iida, Hisao Matsuno, Kimio Kurita, Takeshi Serizawa

Research output: Contribution to conferencePaper

Abstract

Layer-by-layer assembled films between chitosan and alginic acid were prepared at 4°C by stepwise immersion of substrates into their aqueous solutions of 25 % formic acid and water, respectively. Then, the films were immersed in chitosanase acetate buffer solution at 37°C immediately. Chitosanase was electrostatically adsorbed onto multilayers ending alginic acid, since the enzyme was cationically charged in acetate buffer at pH 5.6 (pi of the enzyme = 9.3). Multilayers ending alginic acid prepared from the alginic acid solution at pH 7 were more rapidly desorbed by chitosanase than ending chitosan. On the other hand, the desorption rate of the multilayers were independent of the outermost surface when prepared from at pH 4.

Original languageEnglish
Number of pages1
Publication statusPublished - Dec 1 2005
Externally publishedYes
Event54th SPSJ Annual Meeting 2005 - Yokohama, Japan
Duration: May 25 2005May 27 2005

Other

Other54th SPSJ Annual Meeting 2005
CountryJapan
CityYokohama
Period5/25/055/27/05

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Iida, K., Matsuno, H., Kurita, K., & Serizawa, T. (2005). Enzymatic degradation of ultrathin multilayer films composed of polysaccharides. Paper presented at 54th SPSJ Annual Meeting 2005, Yokohama, Japan.