One approach to remedy such phase separation is to reduce the dry matter content; however, as this approach is detrimental to process cost efficiency, designing an appropriate pretreatment step to ensure pumpability at high dry matter content is preferable.
In practice, however, increasing the initial high dry matter content will also increase the concentrations of inhibitory compounds.
We have demonstrated a unique possibility of using sweet sorghum stalks at high dry matter content in order to produce high SCO yields.
The high dry matter content may, however, have restricted acid formation and indeed, drying has not been found to be a beneficial storing method prior to methane production [ 32].
The sweetpotato clone Tanzania, a member of the composite genotype set, is a high-yielding, stress-tolerant, and broadly cultivated African landrace that is used in various breeding programs due to its high dry matter content and drought tolerance.
Future studies must show if these findings are also true for conditions of high dry matter content and protein loading, conditions which are relevant for enzymatic hydrolysis in industrial applications.
If these loci were used in a marker-assisted selection programme to select for progeny bearing firmer fruit, this would have the unintentional consequence of selecting, high dry matter content, later maturing apples.
This means that the main part of the β-glucosidases will be adsorbed onto the pretreated biomass when using Cellic® CTec2 in production of bioethanol at high dry matter content, confirming the initial findings from experiments with hydrolysis and fermentation of pretreated wheat straw at 25% DM.
The accumulation of ammonium can also be the consequence of re-feeding one part of the digestate in order to mash the substrates with high dry matter contents.
In order for biorefining schemes involving the production of cellulosic ethanol to be economically viable, it is necessary to run the enzymatic hydrolysis step at high dry matter contents in order to decrease the downstream cost of isolating the products.
