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Article Dans Une Revue Applied Microbiology and Biotechnology Année : 1985

Pretreatment of poplar lignocellulose by gamma-ray or ozone for subsequent fungal biodegradation

Résumé

Poplar lignocelluloses, 14C-labelled, on all the cell wall components or only the lignin moieties, were either irradiated with γ-rays from 60Co or treated with ozone. The two pretreatments increase the accessibility of cellulose to commercial cellulase and enhance, to the same extent, lignin and polysaccharide biodegradation by Phanerochaete chrysosporium. As far as delignification is concerned ozone treatment appears, however, to be the most efficient through its effects both on lignin solubilization and lignin biodegradation. Ozone treatment and fungal biodegradation, of poplar sawdust increase its in vitro digestibility when performed independently. Moreover, we have shown that when these treatments are sequentially associated, they make the digestibility of sawdust comparable to that of straw, provided that the pH of the culture medium is controlled. These results open possibilities for the use of such transformed raw materials as animal feed.

Dates et versions

hal-02725619 , version 1 (02-06-2020)

Identifiants

Citer

Jean-Jacques Bono, Gilbert Gas, Alain M. Boudet. Pretreatment of poplar lignocellulose by gamma-ray or ozone for subsequent fungal biodegradation. Applied Microbiology and Biotechnology, 1985, 22 (3), pp.227-234. ⟨10.1007/bf00253615⟩. ⟨hal-02725619⟩
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