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<p>The combined redox reaction of organic acids and hydrogen peroxide was utilized to promote the efficient pretreatment of biomass resources. In this study, a <i>p</i>-toluenesulfonic acid/hydrogen peroxide (TPHP) pretreatment strategy was designed for the effective deconstruction of bamboo and obtaining lignin nanoparticles (LNPs) directly. The results showed that the TPHP method had an excellent pretreatment performance at temperature 90 ℃, <i>p</i>-TsOH concentration 80%, time 30&#xa0;min, and an H<sub>2</sub>O<sub>2</sub> addition of 1.2&#xa0;g/g<sub>Bb</sub>. The cellulose recovery, hemicellulose removal rate, and delignification efficiency were 85.44%, 97.49%, and 95.98%, respectively. Meanwhile, the enzymatic hydrolysis efficiency of the optimal cellulose-rich residues increased from 33.43% to 85.06%. In addition, the recovered lignin had a high purity (&gt; 98.40%), a lower molecular weight (M<sub>w</sub> = 1479&#xa0;g/mol), good homogeneity (PDI = 1.52), and uniform LNPs size (Mean diameter = 95.9&#xa0;nm, PDI = 0.222). This study expanded the application of organic acid and hydrogen peroxide pretreatment and demonstrated that TPHP is a feasible and synergistic method in biorefining.</p>

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Simultaneous lignocellulose fractionation and direct lignin nanoparticles formation of bamboo with p-toluenesulfonic acid/hydrogen peroxide pretreatment

  • 期刊论文

  • 发表日期：

    2026年1月6日

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  • Zhiqiang Zhao,
  • Lanfeng Hui,
  • Mingyue Zhao,
  • Tan Cuong Duong,
  • Dayong Ding

摘要

The combined redox reaction of organic acids and hydrogen peroxide was utilized to promote the efficient pretreatment of biomass resources. In this study, a p-toluenesulfonic acid/hydrogen peroxide (TPHP) pretreatment strategy was designed for the effective deconstruction of bamboo and obtaining lignin nanoparticles (LNPs) directly. The results showed that the TPHP method had an excellent pretreatment performance at temperature 90 ℃, p-TsOH concentration 80%, time 30 min, and an H2O2 addition of 1.2 g/gBb. The cellulose recovery, hemicellulose removal rate, and delignification efficiency were 85.44%, 97.49%, and 95.98%, respectively. Meanwhile, the enzymatic hydrolysis efficiency of the optimal cellulose-rich residues increased from 33.43% to 85.06%. In addition, the recovered lignin had a high purity (> 98.40%), a lower molecular weight (Mw = 1479 g/mol), good homogeneity (PDI = 1.52), and uniform LNPs size (Mean diameter = 95.9 nm, PDI = 0.222). This study expanded the application of organic acid and hydrogen peroxide pretreatment and demonstrated that TPHP is a feasible and synergistic method in biorefining.