Banner for LabNotes
From Lab Notes
Contact Information
Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
Fax: (608) 231-9592


You are here: FPL Home  / Information Products & Services  / Publications

Requested Product

Title: Robust And Efficient Enzymatic Saccharification Of Softwoods By Sporl

Source: In: Proceedings of the 15th international symposium on wood, fiber and pulping chemistry. 2009 June 15-18; Oslo, Norway: Oslo, Norway: Congress-Conference AS, www, P-033, 3 p. limited availability.

Author(s)Zhu, J.Y.; Pan, X.J; Zhu, W.; Wang, G.S.; Gleisner, R.

Publication Year: 2009  View PDF »

Category: Conference Proceedings
Associated Research Project(s):   FPL-4709-1A

Abstract: This study demonstrated Sulfite Pretreatment to Overcome Recalcitrance of Lignocellulose (SPORL) for robust conversion of softwood through enzymatic hydrolysis. At a sodium bisulfite charge around 9%, over 90% cellulose conversion could be achieved when spruce wood chips were pretreated at 180°C with pH near 2. For lodgepole pine, pretreatment liquor initial pH had no effect on enzymatic cellulose conversion in the tested range of 1.9 - 4.2 with a sodium bisulfite charge of 8%. The dissolution of glucan during pretreatment was only about 10%. Most of the hemicelluloses were recovered as monomeric fermentable sugars in the pretreatment spent liquor. SPORL was developed based on sulfite pulping, and therefore has a precedent for excellent scalability for future commercialization.

Keywords: Alcohol, fuelwood, carbohydrates, spruce, biomass energy, biomass utilization, cellulose, hemicellulose, hydrolysis, wood chips, pretreatment, feedstock, enzymes, industrial applications, biotechnology, sulfuric acid, biotechnology, lodgepole pine, fermentation, lignocellulose, sugars, glucose, ethanol, SPORL, bioconversion, biorefining, saccharification, sodium bisulfite, chips, lodgepole pine, wood extractives, chemical utilization, sulfonation, sulfite liquors

Publication Review Process: Informally Refereed (Peer-Reviewed)

File size: 2,009 kb(s)

Date posted: 10/22/2010

This publication is also viewable on Treesearch:  view
RITS Product ID: 31900
Current FPL Scientists associated with this product (listed alphabetically)
Wang, Xiping
Research Forest Products Technologist
Zhu, JunYong
Research General Engineer

Additional items that might interest you
View the video celebrating FPL's 100 years of public service in 2010, from the producers of the Greatest Good....view

Research Highlights from FPL....view

Termite Eradication: A search for the Holy Grail.... view

Moisture Management in Residential Construction Series videos...view

Wood Floor Systems in Residential Construction Series videos....view
- FPL's Mission and Strategic Plan -

FPL's mission is to identify and conduct innovative wood and fiber utilization research that contributes to conservation and productivity of the forest resource, thereby sustaining forests, the economy, and quality of life. ... ..more »

- FPL Research Emphasis Areas -
Advanced Composites

As an integral part of the FPL mission, we improve the long-term sustainability of our Nation's forests by creating valuable composite products from biobased materials ... ..more »

Advanced Structures

The FPL has been in the forefront of wood-frame housing research since 1910 and has long been recognized as a world leader in such housing-related areas as engineered wood ... ..more »

Forest Biorefinery

We all know the compelling reasons that the United States needs to reduce its dependence on fossil fuels. Historically, the greatest increases in energy demand have been for transportation fuels ... ..more »


A leader in wood products research for over a century, the FPL is positioning itself to become the lead Federal research facility for the application of nanotechnology in forest products ... more »

Woody Biomass Utilization

Forests in the United States contain a substantial amount of small-diameter, overstocked, and underutilized material.FPL research projects are exploring the potential of the small-diameter ... ..more »