Michael Reisinger

Learn More
The present study elucidates the organosolv treatment of wheat bran, the major by-product of the milling industry. The influence of temperature (160-200°C) and ethanol concentration (30-60% (w/w)) at a given process time of 30min was investigated. Enzymatic treatments of the organosolv extracts including solid residues led to an overall glucose yield of(More)
Due to the enormous quantities arising in the milling industry and its specific properties, wheat bran can be considered as a feedstock for future biorefineries. In the present work, a detailed investigation was carried out on the hydrothermal (140-200°C) and enzymatic treatment of wheat bran. After hydrothermal pretreatment and a subsequent enzymatic(More)
In this work new high performance liquid chromatographic methods in combination with mass spectrometry have been developed for the quantitation of hindered amine light stabilizers (HALS) which are commonly used as monomeric and oligomeric species for stabilization of plastic materials. These analytes are difficult to separate under traditional reversed(More)
Wheat bran, a side product of the milling industry, can be considered as a feedstock for biorefineries. Unlike other lignocellulosic feedstock, wheat bran contains a reasonable amount of starch, which is not of recalcitrant nature. Therefore, it can be extracted without a costly pretreatment process. The present work evaluates the extraction of starch(More)
Hindered amine light stabilizers are an important class of stabilizers that protect synthetic polymers from degradation and thus from changing mechanical and optical properties. The current study presents an HPLC method capable of separating oligomeric hindered amine light stabilizers on a commercially available stationary phase, employing an MS-compatible(More)
In the present study, the applicability of rapid flow injection-triple quadrupole mass spectrometry for simultaneous qualitative screening of different classes of stabilizers in polymeric materials is demonstrated. Electrospray ionization and atmospherical pressure chemical ionization were compared, whereby the latter yielded generally poorer detection(More)
RATIONALE High-throughput methods for identification and quantification of stabilizers in plastic materials are of significant importance in order to evaluate the suitability of materials of unknown origin for specific application areas, to clarify reasons for failure of materials, or for comparison of materials from different sources. METHODS In the(More)
The present study investigates a wheat bran biorefinery including major processing steps pre-extraction, pre-treatment and lactic acid fermentation. Concerning the dry mass distribution, during the pre-extraction 32% of the feedstock was recovered, offering some perspectives for applications in food area. The pre-treatment (hydrothermal/enzymatic(More)
The intramolecularly hydrogen-bonded bichromophoric tetrapyrrole pigments, bilirubin-IX alpha and mesobilirubin-XIII alpha, adopt either of two folded, intramolecularly hydrogen-bonded, enantiomeric conformations which are in dynamic equilibrium in solution. Added human serum albumin binds preferentially, although not necessarily exclusively, to one(More)
  • 1