Refine
Year of publication
Institute
- Fachbereich Chemie und Biotechnologie (538) (remove)
Has Fulltext
- no (538) (remove)
Language
- English (538) (remove)
Document Type
- Article (459)
- Conference Proceeding (24)
- Part of a Book (18)
- Patent (17)
- Book (9)
- Conference: Meeting Abstract (8)
- Conference Poster (1)
- Preprint (1)
- Review (1)
Keywords
- Heparin (3)
- Chemometrics (2)
- IR spectroscopy (2)
- NMR spectroscopy (2)
- Principal component analysis (2)
- Standardization (2)
- (R)- or (S)- gamma-valerolactone (1)
- 4-hydroxy valeric acid (1)
- ABE (1)
- Acid crash (1)
- Alginate beads (1)
- Analytics (1)
- Authenticity (1)
- Bioeconomy (1)
- Bioethanol (1)
- Biomass (1)
- Biorefinery (1)
- Biorefinery definitions (1)
- Bladder (1)
- Bragg peak (1)
- Butanol (1)
- C. acetobutylicum (1)
- CRISPR/Cas9 (1)
- Chimeric liver-humanized mice (1)
- Chiralidon-R (1)
- Chiralidon-S (1)
- Crude heparin (1)
- Cyclotron production (1)
- Decentral (1)
- Dehydrogenase (1)
- Detergent protease (1)
- Deuterated solvents (1)
- Deuterium NMR (1)
- Diaphorase (1)
- Drug distribution (1)
- Drug metabolism (1)
- Enzymatic biosensor (1)
- Extracellular enzymes (1)
- Ga-68 (1)
- Growth modelling (1)
- Hypersecretion (1)
- IR (1)
- Inorganic ions (1)
- Introduction (1)
- Ions (1)
- Knockout mice (1)
- Levulinic acid (1)
- Lignocellulose feedstook (1)
- Linear discriminant analysis (1)
- Manufacturer (1)
- Marker-free mutagenesis (1)
- Mechanical (1)
- Mechanical simulation (1)
- Medical radionuclide production (1)
- Metabolic shift (1)
- Metal contaminants (1)
- Microfluidic solvent extraction (1)
- Minor chemistry (1)
- Molecular modelling (1)
- Molecular weight determination (1)
- NMR (1)
- On-site (1)
- P2G (1)
- PLS-regression (1)
- Physical chemistry (1)
- Physical chemistry basics (1)
- Physical chemistry starters (1)
- Pre-culture (1)
- Pre-treatment (1)
- Process schemes (1)
- Quality control (1)
- Quantum chemistry (1)
- Reconstruction (1)
- Renewable resources (1)
- Simultaneous determination (1)
- Soft independent modeling of class analogy (1)
- Stenotrophomonas maltophilia (1)
- Thermodynamics as minor (1)
- Toxicology (1)
- USP (1)
- Uracil-phosphoribosyltransferase (1)
- Ureter (1)
- actuator-sensor system (1)
- aspergillus (1)
- bacterial cellulose (1)
- bi-enzyme biosensor (1)
- bioavailability (1)
- biodegradable polymers (1)
- biological dosimeter (1)
- biomethane (1)
- borehole disposal (1)
- bubble column (1)
- capacitive field-effect sensor (1)
- coculture (1)
- deficit irrigation (1)
- disposal facility (1)
- drug metabolising enzymes (1)
- drug–drug interactions (1)
- elastomers (1)
- enzyme kinetics (1)
- enzyme-logic gate (1)
- exopolysaccharides (1)
- fatty acid (1)
- filamentous fungi (1)
- genome engineering (1)
- geological disposal (1)
- glycine (1)
- human metabolites (1)
- hydrogel (1)
- hydrogels (1)
- light-addressable electrode (1)
- light-addressable potentiometric sensor (1)
- mechanical properties (1)
- metathesis (1)
- methanation (1)
- microfluidics (1)
- micronutrients (1)
- neutrons (1)
- nuclear waste (1)
- onion (1)
- optical fibers (1)
- penicillinase (1)
- plug flow reactor (1)
- polyamide (1)
- polyaspartic acid (1)
- polyester (1)
- prebiotic (1)
- proton therapy (1)
- protons (1)
- pullulan (1)
- qNMR (1)
- relative dosimetry (1)
- renewable resources (1)
- retention time (1)
- rubber (1)
- superabsorbent polymers (1)
- supramolecular structures (1)
- swelling properties (1)
- theory and modeling (1)
- tobacco mosaic virus (TMV) (1)
- transporters (1)
- urease (1)
- water economy (1)
- yield (1)
Grass silage provides a great potential as renewable feedstock. Two fractions of the grass silage, a press juice and the fiber fraction, were evaluated for their possible use for bioethanol production. Direct production of ethanol from press juice is not possible due to high concentrations of organic acids. For the fiber fraction, alkaline peroxide or enzymatic pretreatment was used, which removes the phenolic acids in the cell wall. In this study, we demonstrate the possibility to integrate the enzymatic pretreatment with a simultaneous saccharification and fermentation to achieve ethanol production from grass silage in a one-process step. Achieved yields were about 53 g ethanol per kg silage with the alkaline peroxide pretreatment and 91 g/kg with the enzymatic pretreatment at concentrations of 8.5 and 14.6 g/L, respectively. Furthermore, it was shown that additional supplementation of the fermentation medium with vitamins, trace elements and nutrient salts is not necessary when the press juice is directly used in the fermentation step.
The development of a cost-effective hydrolysis for crude cellulose is an essential part of biorefinery developments. To establish such high solid hydrolysis, a new solid state reactor with static mixing is used. However, concentrations >10% (w/w) cause a rate and yield reduction of enzymatic hydrolysis. By optimizing the synergetic activity of cellulolytic enzymes at solid concentrations of 9%, 17% and 23% (w/w) of crude Organosolv cellulose, glucose concentrations of 57, 113 and 152 g L⁻¹ are reached. However, the glucose yield decreases from 0.81 to 0.72gg⁻¹ at 17% (w/w). Optimal conditions for hydrolysis scale-up under minimal enzyme addition are identified. As result, at 23% (w/w) crude cellulose the glucose yield increases from 0.29 to 0.49gg⁻¹. As proof of its applicability, biobutanol, succinic and itaconic acid are produced with the crude hydrolysate. The potential of the substrate is proven e.g. by a high butanol yield of 0.33gg⁻¹.