Journal article
Effect of aging on lignin content, composition and enzymatic saccharification in Corymbia hybrids and parental taxa between years 9 and 12
Biomass and Bioenergy, Vol.93, pp.50-59
2016
Abstract
Corymbia (a eucalypt) is an important forestry genus and a potential lignocellulosic bioenergy feedstock. The composition of the lignocellulosic cell wall significantly impacts pretreatment efficiency and conversion to biofuel but is variable and changes with age. In this study, we estimated Klason lignin content, composition, and monosaccharide (glucose and xylose) release after enzymatic saccharification of untreated and hydrothermally pretreated biomass from Corymbia parental species Corymbia torelliana (CT), Corymbia citriodora subsp. variegata (spotted gum; CCV), and interspecific F1 hybrids (CT × CCV) at ages 9 and 12 years from planting. Analysis of lignin composition derived from syringyl/guaiacyl monolignols (S/G) found significant differences among taxa, with CT S/G ratios (2.2 and 2.0) being significantly lower than CCV (2.6 and 2.3) or hybrids (2.5 and 2.3) at ages 9 and 12 respectively. In general, enzymatic saccharification yields from untreated biomass were significantly different among taxa, with CT (113 and 75 mg g-1) and hybrids (108 and 81 mg g-1) yielding significantly higher glucose from untreated biomass than CCV (82 and 56 mg g-1) at ages 9 and 12 respectively. Comparison of traits within taxa between ages 9 and 12 found S/G ratios and glucose yields from untreated biomass were significantly lower in CT, CCV and hybrid taxa. In conclusion, the formation of lignocellulosic cell walls is complex, influenced by genetics and age of material, requiring optimization of rotation age for biofuel production and other industrial processes.
Details
- Title
- Effect of aging on lignin content, composition and enzymatic saccharification in Corymbia hybrids and parental taxa between years 9 and 12
- Authors
- Adam L Healey (Author) - University of QueenslandJason S Lupoi (Author) - Sage Analytics, United StatesDavid J Lee (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and EngineeringRobert W Sykes (Author) - Oak Ridge National Laboratory, United StatesJoel M Guenther (Author) - Lawrence Berkeley National Laboratory, United StatesKim Tran (Author) - Lawrence Berkeley National Laboratory, United StatesStephen R Decker (Author) - Oak Ridge National Laboratory, United StatesSeema Singh (Author) - Lawrence Berkeley National Laboratory, United StatesBlake A Simmons (Author) - Lawrence Berkeley National Laboratory, United StatesRobert J Henry (Author) - University of Queensland
- Publication details
- Biomass and Bioenergy, Vol.93, pp.50-59
- Publisher
- Pergamon
- Date published
- 2016
- DOI
- 10.1016/j.biombioe.2016.06.016
- ISSN
- 0961-9534
- Copyright note
- Copyright © 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
- Organisation Unit
- Tropical Forests and People Research Centre; University of the Sunshine Coast, Queensland; Forest Industries Research Centre; Forest Research Institute
- Language
- English
- Record Identifier
- 99450460502621
- Output Type
- Journal article
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- Domestic collaboration
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- Web Of Science research areas
- Agricultural Engineering
- Biotechnology & Applied Microbiology
- Energy & Fuels