[1] Development of such organisms, such as Saccharomyces cerevisiae which is capable of secreting high levels of cellobiohydrolases, is already underway.

[2][3][4][5] This enzyme catalyses the hydrolysis of (1→4)-β-D-glucosidic linkages in cellulose and cellotetraose, releasing cellobiose from the non-reducing ends of the chains.

CBH1 from yeast, for example, is composed of a carbohydrate binding site, a linker region and a catalytic domain.

Further purification to bring the ethanol purity to roughly 99.5% Some notable improvements have been made in this area as well.

[10] This is an important development in the sense that it makes large scale, industrial applications more feasible.