Data/hora: 02/06/2024 11:39:51

Provedor de dados: | 58
País: | Brazil
Título: | Characterization of fungal inoculum used in soil bioremediation
Autores: | Ballaminut,Nara; Matheus,Dácio R.
Data: | 2007-06-01
Ano: | 2007
Palavras-chave: | Ligninolytic enzymes; Basidiomycetes; Fungal inoculum; Ergosterol.
Resumo: | Studies have indicated the capacity of basidiomycetes to degrade recalcitrant organopollutants. However, the age of the fungal inoculum to obtain a more effective degradation has not been defined. The criterion used is total colonization of the substrate. Psilocybe castanella CCB444 and Lentinus crinitus CCB274 have been evaluated in soils containing hexachlorobenzene. In the present study, the physiological conditions of the fungal inocula were characterized on solid substrate (sugarcane bagasse, starch and soy flour). Colonization of the substrate, loss of organic matter, pH variation, organic carbon, total nitrogen, fungal biomass and enzymatic activity were evaluated over 30 days of incubation. Colonization of the substrate was almost complete after 20 days for both species, with about 90% of organic matter remaining on the substrates. The pH continued to be acid during incubation. The highest enzymatic production was observed at 10 days for L. crinitus and at 5 days for P. castanella. The fungi presented growth up to 30 days. The C/N ratio of the inocula showed little variation. The use among 10 and 15-day-old inoculum is adequate since sufficient nutrients are left to guarantee survival of the fungus, vigorous colonization of the substrate, a growing biomass and an active enzymatic system, thus permitting fungal growth in soil.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000200011
Editor: | Sociedade Brasileira de Microbiologia
Relação: | 10.1590/S1517-83822007000200011
Formato: | text/html
Fonte: | Brazilian Journal of Microbiology  v.38 n.2 2007
Fonte: | info:eu-repo/semantics/openAccess