Enhancement of lignin degradation and laccase activity in Pleurotus ostreatus by cotton stalk extract

Orly Ardon; Zohar Kerem; Yitzhak Hadar

doi:10.1139/cjm-44-7-676

Enhancement of lignin degradation and laccase activity in Pleurotus ostreatus by cotton stalk extract

Orly Ardon, Zohar Kerem, Yitzhak Hadar^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

51 Scopus citations

Abstract

The white rot fungus Pleurotus ostreatus was grown in a chemically defined solid state fermentation system amended with cotton stalk extract (CSE). Treated cultures exhibited increased laccase activity as well as enhanced lignin mineralization. Mineralization of [¹⁴C]lignin initialized 4 days earlier in CSE-supplemented cultures than in control cultures. Total mineralization in the first 16 days was 15% in the CSE-treated cultures, compared with only 7% in the controls. Cotton stalk extract also contained compounds that serve as substrates for laccase purified from P ostreatus as shown by oxygen consumption, as well as changes in the UV-visible spectrum.

Original language	English
Pages (from-to)	676-680
Number of pages	5
Journal	Canadian Journal of Microbiology
Volume	44
Issue number	7
DOIs	https://doi.org/10.1139/cjm-44-7-676
State	Published - Jul 1998

Keywords

Cotton
Laccase
Lignin biodegradation
Pleurotus ostreatus
White rot

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title = "Enhancement of lignin degradation and laccase activity in Pleurotus ostreatus by cotton stalk extract",

abstract = "The white rot fungus Pleurotus ostreatus was grown in a chemically defined solid state fermentation system amended with cotton stalk extract (CSE). Treated cultures exhibited increased laccase activity as well as enhanced lignin mineralization. Mineralization of [14C]lignin initialized 4 days earlier in CSE-supplemented cultures than in control cultures. Total mineralization in the first 16 days was 15% in the CSE-treated cultures, compared with only 7% in the controls. Cotton stalk extract also contained compounds that serve as substrates for laccase purified from P ostreatus as shown by oxygen consumption, as well as changes in the UV-visible spectrum.",

keywords = "Cotton, Laccase, Lignin biodegradation, Pleurotus ostreatus, White rot",

author = "Orly Ardon and Zohar Kerem and Yitzhak Hadar",

year = "1998",

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N2 - The white rot fungus Pleurotus ostreatus was grown in a chemically defined solid state fermentation system amended with cotton stalk extract (CSE). Treated cultures exhibited increased laccase activity as well as enhanced lignin mineralization. Mineralization of [14C]lignin initialized 4 days earlier in CSE-supplemented cultures than in control cultures. Total mineralization in the first 16 days was 15% in the CSE-treated cultures, compared with only 7% in the controls. Cotton stalk extract also contained compounds that serve as substrates for laccase purified from P ostreatus as shown by oxygen consumption, as well as changes in the UV-visible spectrum.

AB - The white rot fungus Pleurotus ostreatus was grown in a chemically defined solid state fermentation system amended with cotton stalk extract (CSE). Treated cultures exhibited increased laccase activity as well as enhanced lignin mineralization. Mineralization of [14C]lignin initialized 4 days earlier in CSE-supplemented cultures than in control cultures. Total mineralization in the first 16 days was 15% in the CSE-treated cultures, compared with only 7% in the controls. Cotton stalk extract also contained compounds that serve as substrates for laccase purified from P ostreatus as shown by oxygen consumption, as well as changes in the UV-visible spectrum.

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KW - Lignin biodegradation

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Enhancement of lignin degradation and laccase activity in Pleurotus ostreatus by cotton stalk extract

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