Affiliations: College of Environmental Science and Engineering,
Tianjin University, Tianjin 300072, China | Tianjin Agro-biological Technique Research Center,
Tianjin 300192, China | Agricultural Environment Protection Institute, M. O.
A., Tianjin 300191, China
Abstract: A composite microbial system, including a strain of Candida
tropicalis (W3), a strain of Lactobacillus plantarm (WY3) and three strains of
basidiomycete pL104, pL113 and C33, was chosen to degrade corn straw.The final
pH was acid owing to the inoculation of acidogenic bacteria, and under this
condition the composite fungi system could produce complex enzyme to destroy
the compact structure of corn straw. The experimental results showed that the
biomass of composite fungi could reach up to maximum when the pH value was 4.5.
Through the bio-degradation by combining acidogenic bacteria with the composite
fungi system, the cellulose, hemi-cellulose and lignin degradation rates of
corn straw powder were 26.36%, 43.30% and 26.96%, respectively. And the gross
crude protein content increased 60.41%. This study provided the evidence for
the feasibility of developing a composite microbial system with high capability
of degrading straw lignocelluloses in order to make reasonable use of straw
resource and protect rural eco-environment.
Keywords: lignocellulose, bio-degradation, acidogenic bacteria, composite fungi system
