The compositions of the main chemical constituents in the three different biomass materials are provided in Additional file 3: Figure S3 and highlight the compositional differences in the feedstocks before and after HPAC pretreatment.
The possible reason for this discrepancy could be differences in the feedstock characteristics used for incubation or the heat resistance capacity of the E. coli strains used by Aitken et al. (2007).
Regardless of the substantial differences in the source, structure and chemical composition of the feedstocks, and the difference in the pretreatment technology used, the protein loading required to achieve efficient hydrolysis of lignocellulosic substrates was strongly dependent on the accessibility of the cellulosic component of each of the substrates.
We observed only punctual differences between the feedstocks regarding the contaminants.
It should be recognized, however, that there is considerable difference in the performance of individual components depending on the feedstock.
There was no difference in the concentration of lactate within the same feedstock hydrolysate using either the AC or NAC methods, indicating effective control of microbial contamination by the antibiotic gentamicin in the hydrolysate production using these two feedstocks.> -wrap-foot> The data are reported as average ± standard deviation of at least three biological replicates.
The difference in feedstock origin, surface oxidation and CEC of biochar seem to cause varied direct and residual effects on growth and yield of crops (Liang et al. 2006).
Although not significant, the authors have correlated the differences in reducing sugars with the difference in the lignin content (19% in bermudagrass vs 22% in switchgrass) in these lignocellulosic feedstocks.
In addition to feedstock price, higher ethanol prices predicted in the present study can be attributed to the differences in feedstocks, pretreatment technology, onsite/off site cellulase enzyme production, SSF/SSCoF/Consolidated bioprocessing, short/medium/mature technology scenarios and solid content of process streams.
Each of them requires many stages of concentration and I don't see how an enhancement of 5 times in the feedstock would make a significant difference here.
