Data/hora: 09/06/2024 03:53:26

Provedor de dados: | 58
País: | Brazil
Título: | Xylanase and cellulase activities during anaerobic decomposition of three aquatic acrophytes
Autores: | Nunes,Maíra F; Cunha-Santino,Marcela B. da; Bianchini Jr,Irineu.
Data: | 2011-03-01
Ano: | 2011
Palavras-chave: | Anaerobic decomposition; Aquatic macrophytes; Xylanase; Cellulase.
Resumo: | Enzymatic activity during decomposition is extremely important to hydrolyze molecules that are assimilated by microorganisms. During aquatic macrophytes decomposition, enzymes act mainly in the breakdown of lignocellulolytic matrix fibers (i.e. cellulose, hemicellulose and lignin) that encompass the refractory fraction from organic matter. Considering the importance of enzymatic activities role in decomposition processes, this study aimed to describe the temporal changes of xylanase and cellulose activities during anaerobic decomposition of Ricciocarpus natans (freely-floating), Oxycaryum cubense (emergent) and Cabomba furcata (submersed). The aquatic macrophytes were collected in Óleo Lagoon, Luiz Antonio, São Paulo, Brazil and bioassays were accomplished. Decomposition chambers from each species (n = 10) were set up with dried macrophyte fragments and filtered Óleo Lagoon water. The chambers were incubated at 22.5ºC, in the dark and under anaerobic conditions. Enzymatic activities and remaining organic matter were measured periodically during 90 days. The temporal variation of enzymes showed that C. furcata presented the highest decay and the highest maximum enzyme production. Xylanase production was higher than cellulase production for the decomposition of the three aquatic macrophytes species.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000100010
Editor: | Sociedade Brasileira de Microbiologia
Relação: | 10.1590/S1517-83822011000100010
Formato: | text/html
Fonte: | Brazilian Journal of Microbiology  v.42 n.1 2011
Fonte: | info:eu-repo/semantics/openAccess