Determination of Structural Polysaccharides and Lignln in Cattail Biomass

Presenter Information

Sarita Bhetawal

Location

CSU 202

Start Date

27-4-2009 10:00 AM

End Date

27-4-2009 12:00 PM

Student's Major

Chemistry and Geology

Student's College

Science, Engineering and Technology

Mentor's Name

James Rife

Mentor's Department

Chemistry and Geology

Mentor's College

Science, Engineering and Technology

Description

Preliminary research in this lab suggested that cattail biomass was a possible resource for the production of cellulosic ethanol. To rigorously assess the economic potential for making ethanol from cattails. Standard Laboratory Analytical Procedures developed by the National Renewable Energy Laboratory were used to characterize the extractives, structural carbohydrates and lignin in cattail leaves. Extractives were determined by using Soxhlet extraction with water followed by ethanol. Initial trials indicated that dried cattail leaves contained 20% water extractives and 6% ethanol extractives. The dried residual solid was autoclaved with 4% sulfunc acid for one hour. The mixture filtered through a filter crucible. The recovered liquid was analyzed for acid-soluble lignins by its uv absorbance and for carbohydrates by high performance liquid chromatography. The recovered solid was analyzed for acid-insoluble lignin and ash gravimetrically.

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Apr 27th, 10:00 AM Apr 27th, 12:00 PM

Determination of Structural Polysaccharides and Lignln in Cattail Biomass

CSU 202

Preliminary research in this lab suggested that cattail biomass was a possible resource for the production of cellulosic ethanol. To rigorously assess the economic potential for making ethanol from cattails. Standard Laboratory Analytical Procedures developed by the National Renewable Energy Laboratory were used to characterize the extractives, structural carbohydrates and lignin in cattail leaves. Extractives were determined by using Soxhlet extraction with water followed by ethanol. Initial trials indicated that dried cattail leaves contained 20% water extractives and 6% ethanol extractives. The dried residual solid was autoclaved with 4% sulfunc acid for one hour. The mixture filtered through a filter crucible. The recovered liquid was analyzed for acid-soluble lignins by its uv absorbance and for carbohydrates by high performance liquid chromatography. The recovered solid was analyzed for acid-insoluble lignin and ash gravimetrically.

Recommended Citation

Bhetawal, Sarita. "Determination of Structural Polysaccharides and Lignln in Cattail Biomass." Undergraduate Research Symposium, Mankato, MN, April 27, 2009.
https://cornerstone.lib.mnsu.edu/urs/2009/oral-session-05/1