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Greifswald, Germany

Kawai Y.,Kyushu University | Uchino K.,Kyushu University | Muta H.,Kyushu University | Kawai S.,Japan National Institute of Advanced Industrial Science and Technology | Rowf T.,Neoplas GmbH
Vacuum | Year: 2010

To develop ECR plasma source for industrial applications, we produced a large diameter ECR plasma and examined radial profiles of the ion saturation current as a function of pressure and power. It was found that ECR plasma uniform over 300 mm is produced for pressures higher than 1 mTorr and the electron temperature decreases with increasing pressures. © 2010 Elsevier Ltd. All rights reserved. Source


Mallin H.,University of Greifswald | Menyes U.,Enzymicals AG | Vorhaben T.,Neoplas GmbH | Hohne M.,University of Greifswald | Bornscheuer U.T.,University of Greifswald
ChemCatChem | Year: 2013

Two (R)-selective amine transaminases from Gibberella zeae (GibZea) and from Neosartorya fischeri (NeoFis) were immobilized on chitosan as a carrier to improve their application in the biocatalytic synthesis of chiral (R)-amines. An (S)-selective enzyme from Vibrio fluvialis (VfTA) was used for comparison. After improving the immobilization conditions, all enzymes could be efficiently immobilized. Additionally, the thermal stability of GibZea and NeoFis could be improved and also a slight shift of the pH optimum was observed for GibZea. All enzymes showed good activity in the conversion of α-methylbenzylamine. In the asymmetric synthesis of (R)-2-aminohexane from the corresponding ketone, a 13.4-fold higher conversion (>99%) was found for the immobilized GibZea compared to the free enzyme. Hence, the covalent binding with glutaraldehyde of these enzymes on chitosan beads resulted in a significant stabilization of the amine transaminases investigated. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source


Patent
Leibniz Institute for Plasma Science, Technology and Neoplas Gmbh | Date: 2015-06-05

The invention relates to a device, preferably a collar, for treating areas of human or animal skin or mucous membrane with a cold atmospheric pressure plasma by creating a dielectrically hindered surface discharge, comprising at least one flexible insulating material (


Vorhaben T.,University of Greifswald | Bottcher D.,University of Greifswald | Jasinski D.,Neoplas GmbH | Menyes U.,Neoplas GmbH | And 4 more authors.
ChemCatChem | Year: 2010

In this work, the immobilization of two hydrolases on plasma-modified polypropylene carriers was investigated. Treating Accurel MP1001 with an oxygen plasma was found most suitable to increase the hydrophilicity and to allow for efficient immobilization. Thus, for lipase B from Candida antarctica and for an esterase from Pyrobaculum calidifontis esterase (PestE) a 5-fold and 14-fold increase, respectively, in immobilization yield resulted compared to untreated carrier. In contrast to the oxygen-modified support, modification of the polypropylene carrier with ammonia plasma showed no positive effect. Furthermore, it could be shown that immobilized PestE catalyzed enantioselective transesterification of α-phenylethanol in vinyl acetate, whereas the free enzyme showed no activity. Both hydrolases could be recycled five times without significant loss of activity. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source


Patent
NEOPLAS GmbH, Leibniz Institute for Plasma Science and Technology | Date: 2010-07-27

The invention relates to a device, preferably a collar, for treating areas of human or animal skin or mucous membrane with a cold atmospheric pressure plasma by creating a dielectrically hindered surface discharge, comprising at least one flexible insulating material (

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