Journal article
Comparative study on enzymatic digestibility of switchgrass varieties and harvests processed by leading pretreatment technologies
Bioresource technology, Vol.102(24), pp.11089-11096
2011
Handle:
https://hdl.handle.net/2376/105631
PMID: 21741233
Abstract
► We examine variability in switchgrass and its impact on pretreatment and hydrolysis. ► We apply five different leading pretreatment technologies on common feedstocks. ► Saccharification yield response is strongly correlated with harvest season of the switchgrass. ► Eco/genotypes of switchgrass have less impact than harvest time on sugar yields. ► Upland cultivars and over-wintered switchgrass may require more severe pretreatment conditions.
Feedstock quality of switchgrass for biofuel production depends on many factors such as morphological types, geographic origins, maturity, environmental and cultivation parameters, and storage. We report variability in compositions and enzymatic digestion efficiencies for three cultivars of switchgrass (Alamo, Dacotah and Shawnee), grown and harvested at different locations and seasons. Saccharification yields of switchgrass processed by different pretreatment technologies (AFEX, dilute sulfuric acid, liquid hot water, lime, and soaking in aqueous ammonia) are compared in regards to switchgrass genotypes and harvest seasons. Despite its higher cellulose content per dry mass, Dacotah switchgrass harvested after wintering consistently gave a lower saccharification yield than the other two varieties harvested in the fall. The recalcitrance of upland cultivars and over-wintered switchgrass may require more severe pretreatment conditions. We discuss the key features of different pretreatment technologies and differences in switchgrass cultivars and harvest seasons on hydrolysis performance for the applied pretreatment methods.
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Details
- Title
- Comparative study on enzymatic digestibility of switchgrass varieties and harvests processed by leading pretreatment technologies
- Creators
- Youngmi Kim - Laboratory of Renewable Resources Engineering, Potter Engineering Center, 500 Central Drive, Purdue University, West Lafayette, IN 47907-2022, United StatesNathan S Mosier - Laboratory of Renewable Resources Engineering, Potter Engineering Center, 500 Central Drive, Purdue University, West Lafayette, IN 47907-2022, United StatesMichael R Ladisch - Laboratory of Renewable Resources Engineering, Potter Engineering Center, 500 Central Drive, Purdue University, West Lafayette, IN 47907-2022, United StatesV Ramesh Pallapolu - Department of Chemical Engineering, 212 Ross Hall, Auburn University, AL 36849, United StatesY.Y Lee - Department of Chemical Engineering, 212 Ross Hall, Auburn University, AL 36849, United StatesRebecca Garlock - Chemical Engineering and Materials Science, 3815 Technology Bldv, Michigan State University, Lansing, MI 48824, United StatesVenkatesh Balan - Chemical Engineering and Materials Science, 3815 Technology Bldv, Michigan State University, Lansing, MI 48824, United StatesBruce E Dale - Chemical Engineering and Materials Science, 3815 Technology Bldv, Michigan State University, Lansing, MI 48824, United StatesBryon S Donohoe - National Renewable Energy Laboratory, 1617 Cole Bldv, Golden, CO 80401, United StatesTodd B Vinzant - National Renewable Energy Laboratory, 1617 Cole Bldv, Golden, CO 80401, United StatesRichard T Elander - National Renewable Energy Laboratory, 1617 Cole Bldv, Golden, CO 80401, United StatesMatthew Falls - Department of Chemical Engineering, Texas A&M University, 3122 TAMU, College Station, TX 77843-3122, USARocio Sierra - Universidad de los Andes Chemical Engineering Department Grupo de Conversion de Energia, Bogotá, ColombiaMark T Holtzapple - Department of Chemical Engineering, Texas A&M University, 3122 TAMU, College Station, TX 77843-3122, USAJian Shi - Center for Environmental Research and Technology, Bourns College of Engineering, 1084 Columbia Avenue, University of California, Riverside, California 92507, United StatesMirvat A Ebrik - Center for Environmental Research and Technology, Bourns College of Engineering, 1084 Columbia Avenue, University of California, Riverside, California 92507, United StatesTim Redmond - Center for Environmental Research and Technology, Bourns College of Engineering, 1084 Columbia Avenue, University of California, Riverside, California 92507, United StatesBin Yang - Center for Environmental Research and Technology, Bourns College of Engineering, 1084 Columbia Avenue, University of California, Riverside, California 92507, United StatesCharles E Wyman - Center for Environmental Research and Technology, Bourns College of Engineering, 1084 Columbia Avenue, University of California, Riverside, California 92507, United StatesRyan E Warner - Genencor, A Danisco Division, 925 Page Mill Road, Palo Alto, CA 94304, United States
- Publication Details
- Bioresource technology, Vol.102(24), pp.11089-11096
- Academic Unit
- Biological Systems Engineering, Department of
- Publisher
- Elsevier Ltd
- Identifiers
- 99900546808601842
- Language
- English
- Resource Type
- Journal article