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Title: Ethanol and High-Value Terpene Co-Production from Lignocellulosic Biomass of Cymbopogon flexuosus and Cymbopogon martinii

Cymbopogon flexuosus, lemongrass, and C. martinii, palmarosa, are perennial grasses grown to produce essential oils for the fragrance industry. The objectives of this study were (1) to evaluate biomass and oil yields as a function of nitrogen and sulfur fertilization, and (2) to characterize their utility for lignocellulosic ethanol compared to Panicum virgatum (switchgrass). Mean biomass yields were 12.83 Mg lemongrass ha -1 and 15.11 Mg palmarosa ha -1 during the second harvest year resulting in theoretical biofuel yields of 2541 and 2569 L ethanol ha -1 respectively compared to reported 1749–3691 L ethanol ha -1 for switchgrass. Pretreated lemongrass yielded 198 mL ethanol (g biomass) -1 and pretreated palmarosa yielded 170 mL ethanol (g biomass) -1. Additionally, lemongrass yielded 85.7 kg essential oil ha-1 and palmarosa yielded 67.0 kg ha -1 with an estimated value of USD $857 and $1005 ha -1. These data suggest that dual-use crops such as lemongrass and palmarosa may increase the economic viability of lignocellulosic biofuels.
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6] ;  [5] ;  [5] ;  [7] ;
  1. Univ. of Tennessee, Knoxville, TN (United States)
  2. Oregon State Univ., Corvallis, OR (United States)
  3. National Renewable Energy Lab. (NREL), Golden, CO (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. United States Department of Agriculture, University, MS (United States)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  6. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  7. Dalhousie Univ., Truro, NS (Canada)
Publication Date:
Report Number(s):
Journal ID: ISSN 1932-6203
Grant/Contract Number:
AC36-08GO28308; AC05-00OR22725
Accepted Manuscript
Journal Name:
Additional Journal Information:
Journal Volume: 10; Journal Issue: 10; Related Information: PLoS One; Journal ID: ISSN 1932-6203
Public Library of Science
Research Org:
National Renewable Energy Lab. (NREL), Golden, CO (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). BioEnergy Science Center (BESC)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Bioenergy Technologies Office (EE-3B)
Country of Publication:
United States
09 BIOMASS FUELS; ethanol; fermentation; biofuels; fertilizers; oils; sulfur; lignin; terpenes; 58 GEOSCIENCES; Cymbopogon flexuosus; Cymbopogon martinii; terpene; lignocellulosic; biomass; bioethanol
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1327740