View in EDS

Effect of aging on lignin content, composition and enzymatic saccharification in Corymbia hybrids and parental taxa between years 9 and 12.

Saved in:
Bibliographic Details
Title: Effect of aging on lignin content, composition and enzymatic saccharification in Corymbia hybrids and parental taxa between years 9 and 12.
Authors: Healey, Adam L.1 a.healey1@uq.edu.au, Lupoi, Jason S.2 jslupoi0213@gmail.com, Lee, David J.3,4 dlee@usc.edu.au, Sykes, Robert W.5,6 Robert.Sykes@nrel.gov, Guenther, Joel M.7,8 JMGuenther@lbl.gov, Tran, Kim7,8 KTran@lbl.gov, Decker, Stephen R.5,9 steve.decker@nrel.gov, Singh, Seema7,8 seesing@sandia.gov, Simmons, Blake A.1,7,8 basimmons@lbl.gov, Henry, Robert J.1 robert.henry@uq.edu.au
Source: Biomass & Bioenergy. Oct2016, Vol. 93, p50-59. 10p.
Subjects: Eucalyptus, Lignins, Chemical composition of plants, Plant classification, Plant enzymes, Plant cell walls
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. [ABSTRACT FROM AUTHOR]
Copyright of Biomass & Bioenergy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Description
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. [ABSTRACT FROM AUTHOR]
ISSN:09619534
DOI:10.1016/j.biombioe.2016.06.016