Journal of Korea Technical Association of The Pulp and Paper Industry (펄프종이기술)

Korea Technical Association of the Pulp and Paper Industry (한국펄프종이공학회)
권호 표지

Isolation and Purification of Hemicelluloses in Alkali Pre-extractives from Mixed Hardwood

활엽수 알칼리 선추출물 내 헤미셀룰로오스의 분리 및 정제

  • Sim, Kyu-Jeong (Dept. of Forest Sciences, Seoul National University) ;
  • Shin, Hee-Nae (Dept. of Forest Sciences, Seoul National University) ;
  • Youn, Hye-Jung (Dept. of Forest Sciences, Seoul National University) ;
  • Lee, Hak-Lae (Dept. of Forest Sciences, Seoul National University)
  • 심규정 (서울대학교 농업생명과학대학 산림과학부) ;
  • 신희내 (서울대학교 농업생명과학대학 산림과학부) ;
  • 윤혜정 (서울대학교 농업생명과학대학 산림과학부) ;
  • 이학래 (서울대학교 농업생명과학대학 산림과학부)
  • Received : 2010.12.04
  • Accepted : 2010.12.20
  • Published : 2010.12.30
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, hemicelluloses were pre-extracted from mixed hardwood chips using sodium hydroxide solution and then they were isolated from pre-extractives by using various solvents. Isolation was conducted by precipitating hemicelluloses with isopropanol, ethanol, 1,4-dioxane, dimethylsulfoxide (DMSO) and potassium hydroxide (KOH), respectively. The precipitate yield on alkali pre-extractives was the highest when hemicelluloses were isolated by DMSO and then precipitated with ethanol. Most precipitates were yellow colored. The efficiency of isolation was evaluated by analysing the characteristics of isolated hemicelluloses. Isolation using DMSO, KOH and 1,4-dioxane ($80^{\circ}C$) showed rather high efficiency. The highest total separation efficiency was about 77% when alkali pre-extractives were reacted with KOH and precipitated with ethanol. The quantity and purity of isolated hemicelluloses were affected by the solvent type.

Keywords

References

  1. Yoon, S.-H., van Heiningen, A., Kraft pulping and papermaking properties of hot-water pre-extracted loblolly pine in an integrated forest products biorefinery, Tappi Journal 7(7):22-27 (2008).
  2. Ebringerova, A., Structural diversity and application potential of hemicelluloses, Macromolecular Symposia 232(1):1-12 (2005). https://doi.org/10.1002/masy.200551401
  3. Lima, D. U., Oliveira, R. C., Buckeridge, M. S., Seed storage hemicelluloses as wet-end additives in papermaking, Carbohydrate Polymers 52(4):367-373 (2003). https://doi.org/10.1016/S0144-8617(03)00008-0
  4. Engström, N., Vikkula, A., Teleman, A., Vuorinen, T., Structure of hemicelluloses in pine kraft cooking liquors, 8th International Symposium on Wood and Pulping Chemistry, Helsinki, Finland, June 6-9, 3:195-200 (1995).
  5. Al-Dajani, W. W., Tschirner, U. W., Pre-extraction of hemicelluloses and subsequent kraft pulping Prat 1: alkaline extraction, Tappi Journal 7(6):3-8 (2008).
  6. Al-Dajani, W. W., Tschirner, U. W., Jensen, T., Pre-extraction of hemicelluloses and subsequent kraft pulping Prat 2: Acid and autohydrolysis, Tappi Journal 8(9):3-8 (2009).
  7. Al-Dajani, W. W., Tschirner, U. W., Pre-extraction of hemicelluloses and subsequent ASA and ASAM pulping: Comparison of autohydrolysis and alkaline extraction, Holzforschung, 64:411-416 (2010). https://doi.org/10.1515/HF.2010.064
  8. Zhang, Z., Chi, C., Yu, J., Liu, X., Ge, W., An investigation into eucalyptus hemicellulose pre-extraction and its influence on alkaline pulping, Proceedings of 2nd International Papermaking and Environment Conference, Books A, pp.307-310 (2008).
  9. Yang, Y., Sharma-Shivappa, R. R., Burns, J. C., Cheng, J., Saccharification and fermentation of dilute- acid-pretreated freeze-dried switchgrass, Energy Fuels 23: 5626-5635 (2009). https://doi.org/10.1021/ef9003335
  10. Cho, H., Investigation of characteristics of hemicelluloses pre-extraction and its effect on sequent kraft pulping of Korean mixed hardwood chips, Master's thesis, Seoul National University (2009).
  11. Varga, E., Reczey, K., Zacchi, G., Optimization of steam pretreatment of corn stover to enhance enzymatic digestibility, Applied Biochemistry and Biotechnology 113-116: 509-523 (2004).
  12. Jin, A. X., Ren, J. L., Peng, F., Xu, F., Zhou, G. Y., Sun, R. C., Kennedy, J. F., Comparative characterization of degraded and non-degradative hemicelluloses from barley straw and maize stems: Composition, structure, and thermal properties, Carbohydrate Polymers 78:609-619 (2009). https://doi.org/10.1016/j.carbpol.2009.05.024
  13. Sun, X., Sun, R., Fowler, R., Baird, M. S., Extraction and characterization of original lignin and hemicelluloses from wheat straw, Journal of Agriculture and Food Chemistry 53:860-870 (2005). https://doi.org/10.1021/jf040456q
  14. Pepper, J. M., Baylis, P. E. T., Adler, E., The isolation and properties of lignins obtained by the acidolysis of spruce and aspen woods in dioxane-water medium, Canadian Journal of Chemistry, 37:1241-1248 (1959). https://doi.org/10.1139/v59-183