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LU Qi, ZHU Ming-hua, ZU Yuan-gang, ZHANG Ying, ZHANG Xiao-nan, LI Wen-gang, ZU Bai-shi, ZHANG Bao-you. Preparation and antioxidant capacity of high boiling solvent lignin nano-powder.[J]. Journal of Beijing Forestry University, 2011, 33(5): 69-74.
Citation: LU Qi, ZHU Ming-hua, ZU Yuan-gang, ZHANG Ying, ZHANG Xiao-nan, LI Wen-gang, ZU Bai-shi, ZHANG Bao-you. Preparation and antioxidant capacity of high boiling solvent lignin nano-powder.[J]. Journal of Beijing Forestry University, 2011, 33(5): 69-74.
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Preparation and antioxidant capacity of high boiling solvent lignin nano-powder.

  • 1 Key Laboratory of Forest Plant Ecology of Ministry of Education, Northeast Forestry University, Harbin, 150040, P. R. China; 2 Key Laboratory of Bio-based Material Science and Technology of Ministry of Education, Northeast Forestry University, Harbin, 150040, P. R. China.

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  • Received Date: December 31, 1899
  • Revised Date: December 31, 1899
  • Published Date: September 29, 2011
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  • Lignin was extracted from the Acanthopanax senticosus remainders, coming from pharmaceutical production process, with 1,4-butanediol as an extracting reagent. The supercritical antisolvent (SAS) process was studied to prepare nanoscale lignin and test its antioxidant capacity. The optimal condition by a four-level orthogonal design is as follows: precipitation temperature 35℃, precipitation pressure 30 MPa, temperature difference +10℃ and concentration of lignin solution 0.5 mg/mL. Nanoscale organic lignin with mean particle size of (0.144±0.03) μm was obtained by verification experiments. The EC50 of the nanoscale and non-nanoscale organic lignin on DPPH was (0.563±0.02) mg/mL and (0.884±0.02) mg/mL, respectively. The results indicated that the DPPH scavenging capacity of nanoscale organic lignin is more improved than that of non-nanoscale organic lignin.
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