Abstract
The initial stage of cellulose degradation has been studied via in vitro assays of fungi isolated from rotten wood in a boreal forest. Among the 37 isolates, Antrodia sinuosa appeared to be an effective cellulose degrader and was selected for studying the initial degradation process. In the liquid cultivation with carboxymethylcellulose (CMC), the increase of the mycelial dry weight coincided with the pH decrease of the culture medium from pH 5.7 to 3.9, between the 3rd and 6th cultivation day. At the same time, the cellulolytic activity increased; the CMCase activity increased sharply and the reducing sugars reached their maximum concentration in the culture medium. It seems that the decreasing pH enables the cellulose degradation by A. sinuosa at an early stage of the process. The results of this study may be useful for a more efficient industrial application of biomass by means of brown-rot fungi.
Funding source: KONE Foundation
Award Identifier / Grant number: 33-2378
Award Identifier / Grant number: 44-8103
Award Identifier / Grant number: 55-15747
Award Identifier / Grant number: 71-28532
Funding statement: JS was financially supported by the University of Turku and the KONE Foundation, Funder Id: 10.13039/501100005781 (grant numbers 33-2378, 44-8103, 55-15747, 71-28532), Finland. RL was financially supported by the University of Helsinki.
Acknowledgments
We thank the staff at the Botanical Garden, the University of Turku and the University of Eastern Finland for their supports in conducting this study. We appreciate Joanna Kowalczyk, Kristiina Hildén, Elizabeth Nyman and Oili Kiikkilä for commenting on and proofreading this paper.
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Employment or leadership: None declared.
Honorarium: None declared.
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Supplementary Material
The online version of this article offers supplementary material (https://doi.org/10.1515/hf-2018-0145).
©2019 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Original Articles
- Synchrotron X-ray measurements of cellulose in wood cell wall layers of Pinus densiflora in the transmission and reflectance modes. Part 1: results without loading
- NIR hyperspectral imaging (NIR-HI) and μXRD for determination of the transition between juvenile and mature wood of Pinus sylvestris L.
- Characterization of the pits in parenchyma cells of the moso bamboo [Phyllostachys edulis (Carr.) J. Houz.] culm
- Identification of chemical constituents from the bark of Larix kaempferi and their tyrosinase inhibitory effect
- Oxygen delignification: laboratory evaluation of the impact of dissolved organic matter, sodium carbonate and sodium thiosulfate
- A study of thermo-hydro-treated (THT) birch wood by chemical analysis and Py-GC/MS
- Thermally modified (TM) beech wood: compression properties, fracture toughness and cohesive law in mode II obtained from the three-point end-notched flexure (3ENF) test
- Cellulolytic activity of brown-rot Antrodia sinuosa at the initial stage of cellulose degradation
- Ligninases remove phenolic inhibitors and facilitate yeast growth in lignocellulosic hydrolysate
- Development of a reinforced styrene-free unsaturated polyester composite based on bamboo fibers
- Functionalisation of poly(ethylene terephthalate) (PET) surfaces with two cationised xylans by means of two anchoring polymers
Articles in the same Issue
- Frontmatter
- Original Articles
- Synchrotron X-ray measurements of cellulose in wood cell wall layers of Pinus densiflora in the transmission and reflectance modes. Part 1: results without loading
- NIR hyperspectral imaging (NIR-HI) and μXRD for determination of the transition between juvenile and mature wood of Pinus sylvestris L.
- Characterization of the pits in parenchyma cells of the moso bamboo [Phyllostachys edulis (Carr.) J. Houz.] culm
- Identification of chemical constituents from the bark of Larix kaempferi and their tyrosinase inhibitory effect
- Oxygen delignification: laboratory evaluation of the impact of dissolved organic matter, sodium carbonate and sodium thiosulfate
- A study of thermo-hydro-treated (THT) birch wood by chemical analysis and Py-GC/MS
- Thermally modified (TM) beech wood: compression properties, fracture toughness and cohesive law in mode II obtained from the three-point end-notched flexure (3ENF) test
- Cellulolytic activity of brown-rot Antrodia sinuosa at the initial stage of cellulose degradation
- Ligninases remove phenolic inhibitors and facilitate yeast growth in lignocellulosic hydrolysate
- Development of a reinforced styrene-free unsaturated polyester composite based on bamboo fibers
- Functionalisation of poly(ethylene terephthalate) (PET) surfaces with two cationised xylans by means of two anchoring polymers