title: Carbohydrate composition of compost during composting and mycelium growth of Agaricus bisporus.
abstract: Changes of plant cell wall carbohydrate structures occurring during the process to make suitable compost for growth of Agaricus bisporus are unknown. In this paper, composition and carbohydrate structures in compost samples collected during composting and mycelium growth were analyzed. Furthermore, different extracts of compost samples were prepared with water, 1M and 4M alkali and analyzed. At the beginning of composting, 34% and after 16 days of mycelium growth 27% of dry matter was carbohydrates. Carbohydrate composition analysis showed that mainly cellulose and poorly substituted xylan chains with similar amounts and ratios of xylan building blocks were present in all phases studied. Nevertheless, xylan solubility increased 20% over the period of mycelium growth indicating partial degradation of xylan backbone. Apparently, degradation of carbohydrates occurred over the process studied by both bacteria and fungi, mainly having an effect on xylan-chain length and solubility.
authors.affiliation: Wageningen University, Laboratory of Food Chemistry, Bornse Weilanden 9, 6708 WG Wageningen, The Netherlands. Electronic address: edita.jurak@wur.nl.
authors.forename: Edita
authors.initials: E
authors.lastname: Jurak
authors.forename: Mirjam A
authors.initials: MA
authors.lastname: Kabel
authors.forename: Harry
authors.initials: H
authors.lastname: Gruppen
mesh_terms: D000364:Agaricus / Q000737:chemistry* / Q000166:cytology / Q000254:growth & development*; D002241:Carbohydrates / Q000737:chemistry*; D002473:Cell Wall / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D025282:Mycelium / Q000737:chemistry* / Q000166:cytology / Q000254:growth & development*; D012987:Soil / Q000737:chemistry*; D014867:Water / Q000737:chemistry
chemical_list: D002241:Carbohydrates; D012987:Soil; D014867:Water
keywords: Agaricus bisporus; BM; Carbohydrates; Compost; DP; Mushroom; Mycelium; PI; PII; PIII-0; PIII-5, PIII-10, PIII-12, PIII-14 and PIII-16; Phase I compost; Phase II compost; Phase III compost after 5, 10, 12 days and 16 days of mycelium growth, respectively; Phase III compost with added spawn; Xylan; basic mixture; degree of polymerization