1980
DOI: 10.1002/bit.260220210
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Studies of growth conditions in wood for three white‐rot fungi and their cellulaseless mutants

Abstract: SummaryWhite-rot fungi, which have the ability to degrade all the wood components including lignin, are of great interest in biotechnological processes based on wood and other lignocellulosic materials. It was demonstrated earlier that enough lignin can be degraded to cause a decrease in the energy demand for production of thermomechanical pulp if wood chips are pretreated by cellulaseless mutants of whiterot fungi. This paper concerns the growth conditions in wood for three white-rot fungi and their cellulase… Show more

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Cited by 80 publications
(17 citation statements)
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“…1) and it was favoured in the presence of malt extract ( Table 2) which is in consonance with earlier studies [7,18,191. The malt extract might also be acting as a cosubstrate to provide necessary energy for ligninolysis a t least during initial stages of degradation [8,. The higher weight loss during 2nd month may be attributed to enhanced degradation of polysaccharides indicating that lignin loss occurred prior to cellulose [14, 231. The phenolic compounds capable of stimulating laccase production [lo] were able to cause selective degradation of lignin as gallic acid, tannic acid and orcinol enhanced its decomposition without appreciably affecting the total weight loss ( Table 2).…”
Section: Discussionmentioning
confidence: 99%
“…1) and it was favoured in the presence of malt extract ( Table 2) which is in consonance with earlier studies [7,18,191. The malt extract might also be acting as a cosubstrate to provide necessary energy for ligninolysis a t least during initial stages of degradation [8,. The higher weight loss during 2nd month may be attributed to enhanced degradation of polysaccharides indicating that lignin loss occurred prior to cellulose [14, 231. The phenolic compounds capable of stimulating laccase production [lo] were able to cause selective degradation of lignin as gallic acid, tannic acid and orcinol enhanced its decomposition without appreciably affecting the total weight loss ( Table 2).…”
Section: Discussionmentioning
confidence: 99%
“…This effect con®rms that nitrogen has a positive in¯uence on the degradation of cellulose and hemicellulose, 30 and it could be that even higher concentrations of (NH 4 ) 2 SO 4 should have been tested. As expected, 30°C proved to be the optimum temperature for mycelial growth and enzyme activity of the Trichoderma spp.…”
Section: Release Of Sugars For Biomass Productionmentioning
confidence: 93%
“…Os requisitos energéticos para a degradação da lignina são tão grandes que os fungos necessitam de uma fonte adicional de energia facilmente acessível servindo assim os polissacarideos como co-substrato (Eriksson et al, 1980). P. sanguineus, por exemplo, foi que mais degradou xilana dentre os fungos estudados e provavelmente possui xilanases que produzem xilose, necessária para suprir a demanda de energia requerida e também para a produção de peróxido de hidrogênio (Eriksson, 1988).…”
Section: Tyromyces Spunclassified
“…Em geral, fungos de podridão parda causam uma rápida despolimerização da celulose (Cowl ing, 1961;Eriksson et al, 1980), enquanto que fungos de podridão branca causam uma degradação gradual da celulose e utilizam rapidamente os produtos dessa degradação (Eriksson, 1990). Nesse contexto, Castro e mostraram que P. sanguineus exibe atividade celulolítica relativamente alta quando comparado com outros fungos de podridão branca.…”
Section: Tyromyces Spunclassified