Delignification of palm-press fibre by white-rot fungi for enzymic saccharification of cellulose

Tong Chow-Chin, . and Chew Saw-Lee, . and Mohd Noor Wahab, . Delignification of palm-press fibre by white-rot fungi for enzymic saccharification of cellulose. pp. 193-199. ISSN 0126-6128

Palm-press fibres were inoculated with fungal mycelium of ten different isolates of white rot-fungi namely: Pleurotus sajor-caju I II and III; Pleurotus florida; Lentinula edodes I II III IV and V and Ganoderma lucidum. The inoculated fibres Were incubated for a period of up to three months. Of the fungi tested Pleurotus sajor-caju I III and P. florida were found to be the best lignin degraders decreasing the lignin content by as much as 35. This corresponded to an increase of 21 in the digestibility of the fibres. Lignin showed the largest proportionate loss during the growth of these fungi; cellulose and hemicellulose showed the lowest loss for incubation of up to two months. Degradation of hemicellulose seemed to take place later than lignin and cellulose. Some isolates of L. edodes preferably attacked the lignin component while leaving the cellulose and hemicellulose untouched; its rate of degradation however was slower than Pleurotus spp. G. lucidum was a poor lignin degrader and under the present conditions preferred to utilise hemicellulose rather than cellulose for growth.

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Abstract

Palm-press fibres were inoculated with fungal mycelium of ten different isolates of white rot-fungi namely: Pleurotus sajor-caju I II and III; Pleurotus florida; Lentinula edodes I II III IV and V and Ganoderma lucidum. The inoculated fibres Were incubated for a period of up to three months. Of the fungi tested Pleurotus sajor-caju I III and P. florida were found to be the best lignin degraders decreasing the lignin content by as much as 35. This corresponded to an increase of 21 in the digestibility of the fibres. Lignin showed the largest proportionate loss during the growth of these fungi; cellulose and hemicellulose showed the lowest loss for incubation of up to two months. Degradation of hemicellulose seemed to take place later than lignin and cellulose. Some isolates of L. edodes preferably attacked the lignin component while leaving the cellulose and hemicellulose untouched; its rate of degradation however was slower than Pleurotus spp. G. lucidum was a poor lignin degrader and under the present conditions preferred to utilise hemicellulose rather than cellulose for growth.

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Item Type:	Article
AGROVOC Term:	Fungi
AGROVOC Term:	Pleurotus sajor caju
AGROVOC Term:	Pleurotus florida
AGROVOC Term:	Lentinula edodes
AGROVOC Term:	Ganoderma lucidum
AGROVOC Term:	Fibres
AGROVOC Term:	Lignocellulose
AGROVOC Term:	Lignins
AGROVOC Term:	Hemicellulose
AGROVOC Term:	Inoculation methods
Geographical Term:	Malaysia
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	27 Apr 2025 23:32
URI:	http://webagris.upm.edu.my/id/eprint/22772

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