Bioconversion of Lignocellulose to Ethanol: A Review of Production Process

Abstract

Lignocellulose biomass is a kind of rich reserve in china, and it is a renewable bio-resource. Researches on the bioconversion of lignocellulose (lignocellulosic biomass) to ethanol have been hot spot in recent years. The key technologies of producing fuel alcohol by aspects of lignocellulosic raw materials, pretreatment technology, fermentation process, enzymatic hydrolysis and fermentation of strains as well as the removal of fermentation inhibitors have been reviewed. It is pointed out that the improvement of fermentation strains, exploitation of double function saccharomyces cerevisiae (glucose and xylose fermenting) to ethanol, will be the direction and focus in future researches.

Ensilability of Biomass From Effloresced Flower Strips as Co-substrate in Bioenergy Production

“…For the energetic utilization of biomasses rich in lignocellulose, such as that of flower strips, a number of conversion routes are possible, e.g., combustion (van Meerbeek et al, 2015), ethanol (Chen et al, 2011) or biogas production (Vollrath et al, 2016). For the latter two techniques, ensiling is an important component of the production process (Chen et al, 2007) facilitating storage (Emery et al, 2015) and pre-treatment of the substrate (Essien and Richard, 2018).…”

Ru-Catalyzed Oxidative Cleavage of Guaiacyl Glycerol-β-Guaiacyl Ether-a Representative β-O-4 Lignin Model Compound

“…Several applications with nanocomposites of cellulose and hemicelluloses have been reported, for example water-purification [2], (bio)sensing [3] and anti-microbial treatment [4]. However, lately, the transformation of materials, as well as their monomeric C 6 and C 5 carbohydrates, to value-added chemicals and fuels have been studied extensively [5][6][7][8][9][10][11][12][13][14][15]. In comparison, lignin has received much less attention as feedstock, possibly due to its complex polymeric structure and lower reactivity, even though it is a major part of lignocellulosic biomass, typically 30% by weight and 40% by energy content.…”

Construction and Analysis of High-Ethanol-Producing Fusants with Co-Fermentation Ability through Protoplast Fusion and Double Labeling Technology

“…Low-cost lignocellulosic biomass resources have been the subject of increased research interest in recent years as they can be used as raw materials for the production of ethanol-based fuels through microbial conversion [3] , [4] . After hydrolysis, the lignocellulosic hydrolyzate contains a large amount of xylose, in addition to glucose [5] , [6] . Glucose and the other six-carbon sugars can be converted to ethanol by yeast, such as Saccharomyces cerevisiae , as well as other traditional ethanol fermentation industrial yeast strains [7] ; however, it has previously not be viable to use substantial quantities of xylose, a five-carbon sugar, in the fermentation process as the traditional yeast strains do not possess a metabolic pathway for xylose [8] , [9] , [10] , [11] .…”