The enzymatic susceptibility of cellulose microfibrils of the algal-bacterial type and the cotton-ramie type
1997; Elsevier BV; Volume: 305; Issue: 2 Linguagem: Inglês
10.1016/s0008-6215(97)10032-5
ISSN1873-426X
AutoresNoriko Hayashi, Junji Sugiyama, Takeshi Okano, Mitsuro Ishihara,
Tópico(s)Polysaccharides Composition and Applications
ResumoTwo types of substrates, the algal-bacterial type (rich in cellulose Iα) cellulose and the cotton-ramie type (dominant in cellulose Iβ) cellulose, were degraded comparatively by Trichoderma viride cellulase. The algal-bacterial type cellulose microfibril was more susceptible than the cotton-ramie type. The residual cellulose microfibrils were observed by TEM and analyzed by FTIR and electron diffraction. It becomes clear that the residual cellulose of the algal-bacterial type cellulose was getting rich in the cellulose Iβ with the lapse time of cellulase treatment. These results indicate that the cellulose Iα in the microfibril of the algal-bacterial type cellulose is hydrolyzed preferentially by the cellulase.
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