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United States Department of Agriculture

Agricultural Research Service

Research Project: NEW TECHNOLOGIES TO PROCESS VALUE-ADDED, HEALTHY FOODS FROM FRUITS AND VEGETABLES Title: Evaluation of Different Biomass Materials as Feedstock for Fermentable Sugar Production

Authors
item Zheng, Yi - UC DAVIS, DAVIS, CA
item Pan, Zhongli
item Zhang, Ruihong - UC DAVIS, DAVIS, CA
item Labavitch, John - UC DAVIS, DAVIS, CA
item Wang, Donghai - KANSAS ST. UNIV., KS
item Teter, Sarah - NOVOZYMES INC., DAVIS, CA
item Jenkins, Bryan - UC DAVIS, DAVIS, CA

Submitted to: Applied Biochemistry and Biotechnology
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: December 14, 2006
Publication Date: May 1, 2007
Citation: Zheng, Y., Pan, Z., Zhang, R., Labavitch, J.M., Wang, D., Teter, S.A., Jenkins, B.M. 2007. Evaluation of Different Biomass Materials as Feedstock for Fermentable Sugar Production. Applied Biochemistry and Biotechnology. V136-140:423-435.

Interpretive Summary: Saline crops and autoclaved municipal organic solid wastes were evaluated for their potential to be used as feedstock for fermentable sugar production via dilute acid pretreatment and enzymatic hydrolysis. The saline crops included two woods, Athel (Tamarix aphylla L) and Eucalyptus (Eucalyptus camaldulensis), and two grasses, Jose Tall Wheatgrass (Agropyron elongatum) (JTW) and Creeping Wild Rye (Leymus triticoides) (CWR). The results showed that among the saline crops evaluated, the two grasses (Creeping Wild Rye and Jose Tall Wheatgrass) had the highest glucose yield (87% of total cellulose hydrolyzed) and fastest reaction rate during the enzyme treatment. The autoclaved municipal organic solid wastes showed reasonable glucose yield (64%). Of the two wood species evaluated, Athel has higher glucose yield (60% conversion of cellulose) than Eucalyptus (38% conversion of cellulose).

Technical Abstract: Saline crops and autoclaved municipal organic solid wastes were evaluated for their potential to be used as feedstock for fermentable sugar production via dilute acid pretreatment and enzymatic hydrolysis. The saline crops included two woods, Athel (Tamarix aphylla L) and Eucalyptus (Eucalyptus camaldulensis), and two grasses, Jose Tall Wheatgrass (Agropyron elongatum) (JTW) and Creeping Wild Rye (Leymus triticoides) (CWR). Each of the biomass materials was first treated with dilute sulfuric acid under selected conditions (acid concentration=1.4% (w/w), temperature=165°C, and time=8 min) and then treated with the enzymes (cellulases and Beta-glucosidase). The chemical composition (cellulose, hemicellulose and lignin contents) of each biomass material and the yield of total and different types of sugars after the acid and enzyme treatment were determined. The results showed that among the saline crops evaluated, the two grasses (Creeping Wild Rye and Jose Tall Wheatgrass) had the highest glucose yield (87% of total cellulose hydrolyzed) and fastest reaction rate during the enzyme treatment. The autoclaved municipal organic solid wastes showed reasonable glucose yield (64%). Of the two wood species evaluated, Athel has higher glucose yield (60% conversion of cellulose) than Eucalyptus (38% conversion of cellulose).

Last Modified: 10/23/2014