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<p>This study investigated the synergistic <i>Lactiplantibacillus plantarum</i> and laccase-mediated (PL) pretreatment to enhance the efficiency of cellulose and organic acid extraction from sugarcane bagasse (SCB). The extracted cellulose was characterized by various analytical techniques to assess its purity. The PL-treated fibers showed a significant increase in cellulose content and organic acids. The cellulose content increased from 42.27% in the raw SCB to 61.63% in the PL-fiber after bleaching, while lignin and xylan decreased from 25.09% and 23.17% to 7.26% and 19.49%, respectively. The acid concentration increased from 22.28 to 127.09 μmol/mL in <i>L. plantarum</i> treatment&#xa0;and 22.08 to 118.06 μmol/mL in PL treatment. The profiles of&#xa0;organic acid produced by <i>L. plantarum</i> were related to the degradation of hemicellulose and lignin, and the use of laccase to oxidize phenolic compounds in lignin. Notably, bleaching time of fibers was reduced from 7 to 5 h while maintaining high whiteness and crystallinity index of 69.45%. SEM analysis revealed the opening of the fiber structure and increased internal surface area. The Synchrotron radiation Fourier-transform infrared (SR-FTIR) and principal component analysis demonstrated changes in the distribution of chemical composition, which further confirmed the effectiveness of the pretreatment. The combined microbial and enzymatic pretreatment represents a promising environmentally friendly and sustainable strategy for efficient production of carbohydrates and organic acids from food waste.</p>

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Bioconversion of Sugarcane Bagasse into Cellulose and Organic Acid Using Lactiplantibacillus plantarum/Laccase-Mediated Pretreatment

  • 期刊论文

  • 发表日期：

    2025年11月6日

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  • Kongkiat Saknaveeporn,
  • Naiyasit Yingkamhaeng,
  • Selorm Torgbo,
  • Nuntaporn Kamonsutthipaijit,
  • Kanjana Thumanu,
  • Thidarat Nimchua,
  • Nisit Watthanasakphuban,
  • Prakit Sukyai

摘要

This study investigated the synergistic Lactiplantibacillus plantarum and laccase-mediated (PL) pretreatment to enhance the efficiency of cellulose and organic acid extraction from sugarcane bagasse (SCB). The extracted cellulose was characterized by various analytical techniques to assess its purity. The PL-treated fibers showed a significant increase in cellulose content and organic acids. The cellulose content increased from 42.27% in the raw SCB to 61.63% in the PL-fiber after bleaching, while lignin and xylan decreased from 25.09% and 23.17% to 7.26% and 19.49%, respectively. The acid concentration increased from 22.28 to 127.09 μmol/mL in L. plantarum treatment and 22.08 to 118.06 μmol/mL in PL treatment. The profiles of organic acid produced by L. plantarum were related to the degradation of hemicellulose and lignin, and the use of laccase to oxidize phenolic compounds in lignin. Notably, bleaching time of fibers was reduced from 7 to 5 h while maintaining high whiteness and crystallinity index of 69.45%. SEM analysis revealed the opening of the fiber structure and increased internal surface area. The Synchrotron radiation Fourier-transform infrared (SR-FTIR) and principal component analysis demonstrated changes in the distribution of chemical composition, which further confirmed the effectiveness of the pretreatment. The combined microbial and enzymatic pretreatment represents a promising environmentally friendly and sustainable strategy for efficient production of carbohydrates and organic acids from food waste.