Variation of S/G Ratio and Lignin Content in a Populus Family Influences the Release of Xylose by Dilute Acid Hydrolysis

Wood Based Lignin Reactions Important to the Biorefinery and Pulp and Paper Industries

“…On the other hand, Davison et al (2006) reported that a decrease in S/G ratio resulted in significant improvement in the rate of dilute acid hydrolysis and sugar release during pretreatment. It has been speculated that when guaiacyl type of lignin is present, a thinner cell wall is formed and it is easier to degrade.…”

Biofuels Get in the Fast Lane: Developments in Plant Feedstock Production and Processing

“…The traditional approach to decrease lignin levels is to take advantage of the natural genetic variability in the quantity and quality of lignin of the plant cell wall. It has been reported that lignin content varied from 23 to 34% in Populus, while the S/G ratio ranged from 1.8 to 2.3 [192,193]. So, it remains to be demonstrated whether this variability in lignin composition can have an effect on the conversion efficiency.…”

Quantifying Bio-Engineering: The Importance of Biophysics in Biofuel Research

“…The changes to S:G ratio as function of harvesting time has also been identified using pyro-GC/MS (Huyen et al 2010). Feedstocks with similar lignin content have been shown to have different saccharification yields based on their S:G ratio (Davison et al 2006). Feedstocks with higher amount S-lignin were easier to pretreat but had lower xylose yields when compared to feedstocks with higher G-lignin (Davison et al 2006).…”

“…Feedstocks with similar lignin content have been shown to have different saccharification yields based on their S:G ratio (Davison et al 2006). Feedstocks with higher amount S-lignin were easier to pretreat but had lower xylose yields when compared to feedstocks with higher G-lignin (Davison et al 2006). The differences in S:G ratio has also been correlated to in-rumen digestibility of plant biomass (Guo et al 2001;Baucher et al 1999;Vailhé et al 1998).…”

“…In this effort, mutants are developed with modified/ lowered lignin content (Davison et al 2006). These modifications may have a direct effect on the plant cell wall and hence on the systems that provide mechanical strength to the plant.…”