Biodegradation of lignocellulosic waste by Aspergillus terreus

Citation
G. Emtiazi et al., Biodegradation of lignocellulosic waste by Aspergillus terreus, BIODEGRADAT, 12(4), 2001, pp. 259-263
Citations number
19
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Biotecnology & Applied Microbiology
Journal title
BIODEGRADATION
ISSN journal
0923-9820 → ACNP
Volume
12
Issue
4
Year of publication
2001
Pages
259 - 263
Database
ISI
SICI code
0923-9820(2001)12:4<259:BOLWBA>2.0.ZU;2-1
Abstract
Biodegradation of lignocellulosic waste by Aspergillus terreus is reported for the first time. This isolate produced 250 CMCase (carboxymethyl cellula se or endoglucanase) U. ml(-1) and biodegraded hay and straw during 3 days and the biomass production on straw was 5g. L-1 dry weight from 0.25 cm(2) inoculated mycellium. This strain secreted endocellulases and exocellulases in the culture medium, but some of the enzymes produced, remained cell mem brane bound. Cell bound enzymes were released by various treatments. The hi ghest amount of endoglucanase and exoglucanase was released when the cells were treated with sonication. Aspergillus terreus was added to two tanks co ntaining sugar wastewater and pulp manufacturing waste, as a seed for COD r emoval. This fungus reduced the COD by 40-80 percent, also, ammonia was red uced from 14.5 mM to 5.6 mM in sugar beet wastewater. The effects of crude enzyme of this fungus for COD removal was studied.