title: Chemical and ultrastructural studies of lignocellulose biodegradation during Agaricus bisporus cultivation.
abstract: During Agaricus bisporus cultivation, lignocellulose degradation is the result of the activity of both the mushroom and microbial communities developed during the composting. To investigate the lignocellulose degradation in detail from the beginning to the end of the process, the functional groups of cellulose, hemicellulose, and lignin have been studied with Fourier transform infrared spectroscopy and the morphological changes of lignocelluloses were elucidated with scanning electron microscopy. The aperture of lignin and cellulose increased to enable the mycelia of A. bisporus to penetrate into the medium and to degrade lignocelluloses in a more direct way. The chemical structure changes implied a preferential use of lignin that could make for better use of cellulose to boost growth of A. bisporus. Changes in chemical structure together with ultrastructural changes induced by the microbial flora during cultivation substrate production by the composting substrate are important in promoting the utilization of lignocelluloses by A. bisporus.
authors.affiliation: State Key Laboratory for Agro-Biotechnology, Department of Microbiology and Immunology, China Agricultural University, Haidian District, Beijing, People's Republic of China.
authors.forename: Rui
authors.initials: R
authors.lastname: Zhang
authors.forename: Hexiang
authors.initials: H
authors.lastname: Wang
authors.forename: Qinghong
authors.initials: Q
authors.lastname: Liu
authors.forename: TziBun
authors.initials: T
authors.lastname: Ng
mesh_terms: D000364:Agaricus / Q000201:enzymology / Q000254:growth & development*; D002482:Cellulose / Q000096:biosynthesis; D008031:Lignin / Q000096:biosynthesis / Q000737:chemistry / Q000648:ultrastructure; D011134:Polysaccharides / Q000096:biosynthesis; D059748:Proteolysis
chemical_list: D011134:Polysaccharides; C036909:lignocellulose; C007916:hemicellulose; D002482:Cellulose; D008031:Lignin
keywords: Agaricus bisporus; FT-IR; SEM; cellulose; degradation; lignin