Scholarlink

<p>Biogas is a renewable energy source produced through the anaerobic digestion of organic waste. Access by microbial enzymes can be facilitated if the lignocellulosic material undergoes pretreatment. Leaf litter and termite guts can be promising sources of enzyme-producing microorganisms for this purpose. Fungi and bacteria recovered from soil litter and termite guts were screened for enzymatic activities and used as a consortium in a pretreatment of sugarcane bagasse to improve biogas production. Forty fungi and nine bacteria were isolated. From this, nine filamentous fungi and nine bacteria produced at least two of the enzymatic activities. The highest values ​for laccase, lignin peroxidase, and manganese peroxidase were 0.16, 1,863.80, and 1,737.27 U L⁻¹, respectively. For cellulase and xylanase were 13.52 and 64.24 U mL⁻¹, respectively. <i>Talaromyces mycothecae</i> BR04, <i>Aspergillus versicolor</i> BR14, <i>Rossellomorea marisflavi</i> CPM2, <i>Bacillus subtilis</i> CPM6, and <i>Priestia megaterium</i> CPM18 were used in the pretreatment of sugarcane in semi-solid fermentation for 14 days at 28&#xa0;°C, due to improved performance in enzymatic activities and compatibility assays. Sugarcane bagasse + bacteria (SCB + B) treatment exhibited the highest total accumulated biogas production, reaching 66.95 NL kg<sup>− 1</sup> VS, compared to SCB, demonstrating that microbial pretreatment improved biogas production. Fungi and bacteria isolated from leaf litter and termite guts produce enzymes involved in biogas production. The use of microbial consortia in the pretreatment of lignocellulosic biomass can enhance biogas production.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Pretreatment of lignocellulosic biomass and biogas production from a microbial consortium recovered from soil litter and termite gut

  • 期刊论文

  • 发表日期：

    2025年12月24日

查看全文
  • Suzan Prado Fernandes Bernal,
  • Leiber Julio Granada Galvis,
  • Júlia Ronzella Ottoni,
  • Nelson Lima,
  • Márcia Regina Becker,
  • Caroline da Costa Silva Gonçalves,
  • Michel Rodrigo Zambrano Passarini

摘要

Biogas is a renewable energy source produced through the anaerobic digestion of organic waste. Access by microbial enzymes can be facilitated if the lignocellulosic material undergoes pretreatment. Leaf litter and termite guts can be promising sources of enzyme-producing microorganisms for this purpose. Fungi and bacteria recovered from soil litter and termite guts were screened for enzymatic activities and used as a consortium in a pretreatment of sugarcane bagasse to improve biogas production. Forty fungi and nine bacteria were isolated. From this, nine filamentous fungi and nine bacteria produced at least two of the enzymatic activities. The highest values ​for laccase, lignin peroxidase, and manganese peroxidase were 0.16, 1,863.80, and 1,737.27 U L⁻¹, respectively. For cellulase and xylanase were 13.52 and 64.24 U mL⁻¹, respectively. Talaromyces mycothecae BR04, Aspergillus versicolor BR14, Rossellomorea marisflavi CPM2, Bacillus subtilis CPM6, and Priestia megaterium CPM18 were used in the pretreatment of sugarcane in semi-solid fermentation for 14 days at 28 °C, due to improved performance in enzymatic activities and compatibility assays. Sugarcane bagasse + bacteria (SCB + B) treatment exhibited the highest total accumulated biogas production, reaching 66.95 NL kg− 1 VS, compared to SCB, demonstrating that microbial pretreatment improved biogas production. Fungi and bacteria isolated from leaf litter and termite guts produce enzymes involved in biogas production. The use of microbial consortia in the pretreatment of lignocellulosic biomass can enhance biogas production.