Article
Refine
Year of publication
Institute
- Fachbereich Chemie und Biotechnologie (602) (remove)
Document Type
- Article (602) (remove)
Keywords
- Heparin (3)
- Bacillaceae (2)
- Biotechnological application (2)
- Butanol (2)
- Chemometrics (2)
- IR spectroscopy (2)
- NMR spectroscopy (2)
- Principal component analysis (2)
- Standardization (2)
- Subtilases (2)
- Subtilisin (2)
- bubble column (2)
- methanation (2)
- plug flow reactor (2)
- qNMR (2)
- (Poly)saccharides (1)
- ABE (1)
- Acid crash (1)
- Algal Turf Scrubber (1)
- Algal–bacterial bioflm (1)
- Alginate beads (1)
- Alkalihalobacillus okhensis (1)
- Aloe vera (1)
- Authenticity (1)
- Biofuel (1)
- Biogas (1)
- Biological hydrogen (1)
- Biomass (1)
- Biorefinery (1)
- Bragg peak (1)
- Broad pH spectrum (1)
- C. acetobutylicum (1)
- CRISPR/Cas9 (1)
- Carrier solvents (1)
- Chondroitin sulfate (1)
- Circular bioeconomy (1)
- Clostridium acetobutylicum (1)
- Crude heparin (1)
- Cyclotron production (1)
- Dark fermentation (1)
- Dehydrogenase (1)
- Detergent protease (1)
- Deuterated solvents (1)
- Deuterium NMR (1)
- Diaphorase (1)
- Dietary supplements (1)
- Electronic cigarettes (1)
- Enzymatic biosensor (1)
- Extracellular enzymes (1)
- Free-base nicotine (1)
- Ga-68 (1)
- Glucosamine (1)
- Halotolerant protease (1)
- High-field NMR (1)
- Hydrolysis (1)
- Hypersecretion (1)
- IR (1)
- Inorganic ions (1)
- Ions (1)
- Lignocellulose (1)
- Linear discriminant analysis (1)
- Low field NMR (1)
- Manufacturer (1)
- Marker-free mutagenesis (1)
- Medical radionuclide production (1)
- Metabolic shift (1)
- Metal contaminants (1)
- Methane (1)
- Microfluidic solvent extraction (1)
- Molecular modelling (1)
- Molecular weight determination (1)
- NMR (1)
- Organic acids (1)
- Organic waste (1)
- P2G (1)
- PLS-regression (1)
- Polysaccharides (1)
- Pre-culture (1)
- Pretreatment (1)
- Quality control (1)
- Quantum chemistry (1)
- Simultaneous determination (1)
- Soft independent modeling of class analogy (1)
- Spectroscopy (1)
- Stenotrophomonas maltophilia (1)
- Streptomyces griseus (1)
- Streptomyces lividans (1)
- USP (1)
- Uracil-phosphoribosyltransferase (1)
- Weak organic acids (1)
- acetoin (1)
- acetoin reductase (1)
- actuator-sensor system (1)
- alcoholic beverages (1)
- aspergillus (1)
- bacterial cellulose (1)
- bi-enzyme biosensor (1)
- bio-methane (1)
- bioavailability (1)
- biodegradable polymers (1)
- biological dosimeter (1)
- biomethane (1)
- biosensors (1)
- borehole disposal (1)
- capacitive field-effect sensor (1)
- capacitive field-effect sensors (1)
- coculture (1)
- deficit irrigation (1)
- detergent protease (1)
- disposal facility (1)
- drug metabolising enzymes (1)
- drug–drug interactions (1)
- elastomers (1)
- enzyme kinetics (1)
- enzyme-logic gate (1)
- exopolysaccharides (1)
- filamentous fungi (1)
- genome engineering (1)
- geological disposal (1)
- glycine (1)
- halotolerant protease (1)
- high-alkaline subtilisin (1)
- human metabolites (1)
- hydrogel (1)
- hydrogels (1)
- light-addressable electrode (1)
- light-addressable potentiometric sensor (1)
- mechanical properties (1)
- microfluidics (1)
- micronutrients (1)
- neutrons (1)
- nuclear waste (1)
- onion (1)
- optical fibers (1)
- oxidative stable protease (1)
- penicillinase (1)
- polyaspartic acid (1)
- power-to-gas (1)
- prebiotic (1)
- proton therapy (1)
- protons (1)
- pullulan (1)
- recombinant expression (1)
- relative dosimetry (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)
- α-aminoacylase (1)
- ε-lysine acylase (1)
Oxorhenium(V) complexes [ReOX3(PPh3)2] (X = Cl, Br) react with phenylacetylene under formation of complexes with ylide-type ligands. Compounds of the compositions [ReOCl3(PPh3){C(Ph)C(H)(PPh3)}] (1), [ReOBr3(OPPh3){C(Ph)C(H)(PPh3)}] (2), and [ReOBr3(OPPh3){C(H)C(Ph)(PPh3)}] (3) were isolated and characterized by X-ray diffraction. They contain a ligand, which was formed by a nucleophilic attack of released PPh3 at coordinated phenylacetylene. The structures of the products show that there is no preferable position for this attack. Cleavage of the Re–C bond in 3 and dimerization of the organic ligand resulted in the formation of the [{(PPh3)(H)CC(Ph)}2]2+ cation, which crystallized as its [(ReOBr4)(OReO3)]2– salt.
A major part of edible oil is subjected to bleaching procedures, primarily with minerals applied as adsorbers. Their recycling is currently done either by regaining the oil via organic solvent extraction or by using the spent bleaching earth (SBE) as additive for animal feed, etc. As a new method, the reutilization of the by-product SBE for the microbiologic formation of acetone, butanol, and ethanol (ABE) is presented as proof-of-concept. The SBE was taken from a palm oil cleaning process. The recycling concept is based on the application of lipolytic clostridia strains. Due to considerably long fermentation times, co-fermentation with Candida rugosa and enzymatic hydrolyses of the bound oil with a subsequent clostridia fermentation are shown as alternative routes. Anaerobic fermentations under comparison of different clostridia strains were performed with glycerol media, enzymatically hydrolyzed palm oil and SBE. Solutes, side product compositions and productivities were quantified via HPLC. A successful production of ABE solutes from SBE has been done with a yield of 0.15 g butanol per gram of bound glycerol. Thus, the biotechnological recycling of the waste stream is possible in principle. Inhibition of the substrate suspension has been observed. A chromatographic ion-exchange of substrates increased the biomass concentration.
The concept of energy conversion into platform chemicals using bioelectrochemical systems (BES) has gained increasing attention in recent years, as the technology simultaneously provides an opportunity for sustainable chemical production and tackles the challenge of Power-to-X technologies. There are many approaches to realize the industrial scale of BES. One concept is to equip standard bioreactors with static electrodes. However, large installations resulted in a negative influence on various reactor parameters. In this study, we present a new single-chamber BES based on a stirred tank reactor in which the stirrer was replaced by a carbon fiber brush, performing the functions of the working electrode and the stirrer. The reactor is characterized in abiotic studies and electro-fermentations with Clostridium acetobutylicum. Compared to standard reactors an increase in butanol production of 20.14±3.66 % shows that the new BES can be efficiently used for bioelectrochemical processes.