Effectiveness of fungal treatment by Coprinopsis cinerea and Polyporus tricholoma on degradation and methane yields of lignocellulosic grass

Nuchdang, Sasikarn; Vatanyoopaisarn, Savitri; Phalakornkule, Chantaraporn

doi:10.1016/j.ibiod.2015.05.015

Cited by 19 publications

(10 citation statements)

References 31 publications

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“…On the other hand, xylanase was the highest enzyme activity observed on barley straw with C. cinerea, especially during the last 2 weeks of cultivation. This pattern of xylanase enzyme activity was similar to results attained with C. cinerea on paragrass [35]. In summary of our observations on enzyme activities produced in the solid-state cultures, C. cinerea seemingly preferred degradation of hemicellulose rather than cellulose of barley straw.…”

Section: Ldf Enzyme Activity Production Profilesupporting

confidence: 84%

“…However, only transient laccase activity on the second week was detectable in our cultivations. In other studies performed with C. cinerea using rice straw and paragrass as solid lignocellulose substrates [34,35], moderate laccase activities were observed after 2 weeks of cultivation, which implies some role for extracellular laccase in the growth and colonization of solid plant biomass substrates for C. cinerea. However, considering the role of laccases in filamentous fungi including involvement in various physiological processes such as hyphal growth and fusion, fruiting body formation and sporulation, it is more reasonable that expression of the multiple laccases is more regulated by fungal life cycle than the growth substrate [15,33].…”

Section: Ldf Enzyme Activity Production Profilementioning

confidence: 77%

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Enzyme Activity Profiles Produced on Wood and Straw by Four Fungi of Different Decay Strategies

et al. 2020

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Four well-studied saprotrophic Basidiomycota Agaricomycetes species with different decay strategies were cultivated on solid lignocellulose substrates to compare their extracellular decomposing carbohydrate-active and lignin-attacking enzyme production profiles. Two Polyporales species, the white rot fungus Phlebia radiata and brown rot fungus Fomitopsis pinicola, as well as one Agaricales species, the intermediate “grey” rot fungus Schizophyllum commune, were cultivated on birch wood pieces for 12 weeks, whereas the second Agaricales species, the litter-decomposing fungus Coprinopsis cinerea was cultivated on barley straw for 6 weeks under laboratory conditions. During 3 months of growth on birch wood, only the white rot fungus P. radiata produced high laccase and MnP activities. The brown rot fungus F. pinicola demonstrated notable production of xylanase activity up to 43 nkat/mL on birch wood, together with moderate β-glucosidase and endoglucanase cellulolytic activities. The intermediate rot fungus S. commune was the strongest producer of β-glucosidase with activities up to 54 nkat/mL, and a notable producer of xylanase activity, even up to 620 nkat/mL, on birch wood. Low lignin-attacking but moderate activities against cellulose and hemicellulose were observed with the litter-decomposer C. cinerea on barley straw. Overall, our results imply that plant cell wall decomposition ability of taxonomically and ecologically divergent fungi is in line with their enzymatic decay strategy, which is fundamental in understanding their physiology and potential for biotechnological applications.

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Section: Ldf Enzyme Activity Production Profilesupporting

confidence: 84%

Section: Ldf Enzyme Activity Production Profilementioning

confidence: 77%

Enzyme Activity Profiles Produced on Wood and Straw by Four Fungi of Different Decay Strategies

et al. 2020

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“…The decreases in TS after the pretreatments were mostly caused by dilution due to the fungal inoculum water content and by PCWP degradation [26,29]. Similar results were obtained by Nuchdang et al [39] when pretreating lignocellulosic grass with C. cinerea (27%). Carrere et al [40] and Baldrian et al [41] reported a slightly lower decrease (10-20%).…”

Section: Fungal Inoculum Addition and Pretreatments: Effects On Sfdsupporting

confidence: 78%

“…All the tested strains affected the PCWP composition. This was not completely unexpected, since the selected fungal strains may produce lignocellulolytic enzymes [39,45,46] potentially useful for improving the bioconversion of lignocellulosic feedstocks [47]. As expected, distinct fungal species caused a different degradation profile and a longer treatment caused major PCWP modifications.…”

Section: Fungal Inoculum Addition and Pretreatments: Effects On Sfdsupporting

confidence: 60%

Fungal Pretreatments on Non-Sterile Solid Digestate to Enhance Methane Yield and the Sustainability of Anaerobic Digestion

et al. 2020

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Fungi can run feedstock pretreatment to improve the hydrolysis and utilization of recalcitrant lignocellulose-rich biomass during anaerobic digestion (AD). In this study, three fungal strains (Coprinopsis cinerea MUT 6385, Cyclocybe aegerita MUT 5639, Cephalotrichum stemonitis MUT 6326) were inoculated in the non-sterile solid fraction of digestate, with the aim to further (re)use it as a feedstock for AD. The application of fungal pretreatments induced changes in the plant cell wall polymers, and different profiles were observed among strains. Significant increases (p < 0.05) in the cumulative biogas and methane yields with respect to the untreated control were observed. The most effective pretreatment was carried out for 20 days with C. stemonitis, causing the highest hemicellulose, lignin, and cellulose reduction (59.3%, 9.6%, and 8.2%, respectively); the cumulative biogas and methane production showed a 182% and 214% increase, respectively, compared to the untreated control. The increase in AD yields was ascribable both to the addition of fungal biomass, which acted as an organic feedstock, and to the lignocellulose transformation due to fungal activity during pretreatments. The developed technologies have the potential to enhance the anaerobic degradability of solid digestate and untap its biogas potential for a further digestion step, thus allowing an improvement in the environmental and economic sustainability of the AD process and the better management of its by-products.

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“…can secrete proteases [52], and Coprinopsis spp. can degrade cellulose [53], both of which could promote OM degradation during composting. The result indicated that adding 5-15% peat might promote OM degradation by altering fungal community at matured stage of composting.…”

Section: The Dynamics Of Fungal Community Composition During Compostingmentioning

confidence: 99%

Impacts of peat on nitrogen conservation and fungal community composition dynamics during food waste composting

Zeng

et al. 2020

Appl Biol Chem

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Peat, as a heterogeneous mixture of decaying plant debris and microbial residues, has been widely used in many fields. However, little research focused on the impact of peat addition on food waste composting. To fill this gap, a composting experiment of food waste mixed with five varying percent peat 0, 5, 10, 15, and 20% (w/w, dry weight) was designed to investigate the effect of different dosages of peat on nitrogen conservation, physiochemical parameters, and fungal community dynamics during composting. The results showed that adding peat elevated the peak temperature of composting, lowered final pH, reduced ammonia emissions and increased the final total nitrogen content. Compared to control, adding 5, 10, 15, and 20% peat decreased ammonia emissions by 1.91, 10.79, 23.73, and 18.26%, respectively, during 42 days of composting. Moreover, peat addition increased fungal community diversity especially during maturation phase. The most two abundant phyla were Basidiomycota and Ascomycota in all treatments throughout the composting process. At the end of composting, in treatments with adding 10 and 15% peat, the richest fungi were Scedosporium spp. and Coprinopsis spp., respectively. Simultaneously, canonical correlation analyses showed that pH, moisture content, and seed germination index had significant association with fungal community composition. The study also showed that fungal community and nitrogen conservation had no direct obvious relation during composting. Overall, the results suggest that the addition of peat could efficiently enhance nitrogen conservation through reduction of ammonia emissions and 15% peat addition is the optimal formula for food waste composting.

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Effectiveness of fungal treatment by Coprinopsis cinerea and Polyporus tricholoma on degradation and methane yields of lignocellulosic grass

Cited by 19 publications

References 31 publications

Enzyme Activity Profiles Produced on Wood and Straw by Four Fungi of Different Decay Strategies

Enzyme Activity Profiles Produced on Wood and Straw by Four Fungi of Different Decay Strategies

Fungal Pretreatments on Non-Sterile Solid Digestate to Enhance Methane Yield and the Sustainability of Anaerobic Digestion

Impacts of peat on nitrogen conservation and fungal community composition dynamics during food waste composting

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