• Title, Summary, Keyword: Trametes trogii

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Effects of Carbon and Nitrogen Sources in the Production of Cellulolytic Enzymes by Trametes trogii (Trametes trogii에 의한 섬유소 분해효소의 생산에 있어서 탄소원과 질소원의 영향)

  • Kim, Myeong-Sook;Hong, Jai-Sik;Kim, Myung-Kon;Yoon, Sook;Choi, Yoon-Hee
    • The Korean Journal of Mycology
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    • v.25 no.1
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    • pp.68-76
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    • 1997
  • For the purpose of utilizingcellulosesresources by cellulolytic enzymes of Trametes trogii, its cultural conditions for the production of cellulolytic enzymes in synthetic media were investigated. The optimum conditions for the production of cellulase by T. trogii in synthetic media were $30{\sim}35^{\circ}C,\;pH\;4.0{\sim}6.0,\;and\;11{\sim}15$ day's cultivation. Among the carbon sources, carboxymethyl cellulose was good for the production of avicelase and ${\beta}-glucosidase$, but cellulose was good for the production of CMCase. The optimum concentration of Na-CMC was 3% for the production of all the three cellulolytic enzymes. As the nitrogen source, $0.03{\sim}0.04%$ N as ammonium tartrate was effective for the production of the cellulases.

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A new approach for detoxification of landfill leachate using Trametes trogii

  • Smaoui, Yosr;Fersi, Mariem;Mechichi, Tahar;Sayadi, Sami;Bouzid, Jalel
    • Environmental Engineering Research
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    • v.24 no.1
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    • pp.144-149
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    • 2019
  • Landfill leachate constitutes one of the most polluting wastewaters. Their treatment was considered difficult due to the presence of high concentration of organic matter, ammonia, toxic organic compounds and heavy metals. Biological processes were found to be effective in several cases, but they are limited by the presence of inhibitory compounds in leachate. In this study we develop a biological process for the leachate biodetoxification using Trametes trogii (T. trogii; CLBE55). Results show that laccase activity, mycelia growth and chemical oxygen demand (COD) removal efficiencies varied depending on the leachate and ammonium concentration. Indeed T. trogii was able to grow in the presence of low concentration of landfill leachate of 10 and 30%. In fact, the biomass produced was 4.7 and 3.7 g/L, respectively leading to a COD removal of 66 and 53%, respectively. However, when the concentration of the introduced leachate exceeds 30%, the treatment efficiency and particularly the COD removal decreases to reach 15% at 100% leachate. The effect of the ammonia was also studied and results showed that the addition of 5 g/L of ammonia inhibited totally the production of laccase and the COD removal.

Purification and Characterization of a Thermostable Laccase from Trametes trogii and Its Ability in Modification of Kraft Lignin

  • Ai, Ming-Qiang;Wang, Fang-Fang;Huang, Feng
    • Journal of Microbiology and Biotechnology
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    • v.25 no.8
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    • pp.1361-1370
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    • 2015
  • A blue laccase was purified from a white rot fungus of Trametes trogii, which was a monomeric protein of 64 kDa as determined by SDS-PAGE. The enzyme acted optimally at a pH of 2.2 to 4.5 and a temperature of 70℃ and showed high thermal stability, with a half-life of 1.6 h at 60℃. A broad range of substrates, including the non-phenolic azo dye methyl red, was oxidized by the laccase, and the laccase exhibited high affinity towards ABTS and syringaldazine. Moreover, the laccase was fairly metal-tolerant. A high-molecular-weight kraft lignin was effectively polymerized by the laccase, with a maximum of 6.4-fold increase in weight-average molecular weight, as demonstrated by gel permeation chromatography. Notable structural changes in the polymerized lignin were detected by Fourier transform infrared spectroscopy and 1H NMR spectroscopy. This revealed an increase in condensed structures as well as carbonyl and aliphatic hydroxyl groups. Simultaneously, phenolic hydroxyl and methoxy groups decreased. These results suggested the potential use of the laccase in lignin modification.

Assessment of organic matter biodegradation and physico-chemical parameters variation during co-composting of lignocellulosic wastes with Trametes trogii inoculation

  • Fersi, Mariem;Mbarki, Khadija;Gargouri, Kamel;Mechichi, Tahar;Hachicha, Ridha
    • Environmental Engineering Research
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    • v.24 no.4
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    • pp.670-679
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    • 2019
  • Lignin complexity molecule makes its biodegradation difficult during lignocellulosic wastes composting. So, the improvement of its biodegradation has usually been considered as an objective. This study aimed to determine the impact of Trametes trogii inoculation on organic matter and particularly on lignin and cellulose during green wastes co-composting with olive mill waste water sludge and coffee grounds. Three types of heaps (H1, H2 and H3) were investigated during 180 d. H3 and H2 were inoculated at the beginning of the process (t0) and 120 d later (t120), respectively while H1 was the control. Results showed the absence of pH stabilization in H3 during the first month. Also, in this period we observed a faster degradation of some easily available organic matter in H3 than in the other heaps. After 120 d, a better cellulose decomposition (25.28%) was noticed in H3 than in H1 and H2 (16%). Inoculation during the second fermentation phase induced supplementary lignin degradation in H2 with a percentage of 35% against 23 and 26% for H1 and H3, respectively. For all the runs, a Fourier Transform Infrared analysis showed aliphatic groups' decrease, OH groups' increase and lignin structural modification.