Výsledky vyhledávání - "Anja Steffen-Heins"

Identification of an optimized ratio of amyloid and non-amyloid fractions in engineered fibril solutions from whey protein isolate for improved foaming

Autor: Jacqueline Lux, Helena Kieserling, Jörg Koop, Stephan Drusch, Karin Schwarz, Julia K. Keppler, Anja Steffen-Heins

Publikováno v: Colloids and Surfaces A: Physicochemical and Engineering Aspects, 660
Colloids and Surfaces A: Physicochemical and Engineering Aspects 660 (2023)

Engineered fibril solutions from whey protein beta-lactoglobulin are known for their excellent foaming capacity. These amyloid aggregates solutions (AAS) usually contain a polydisperse mixture of different protein structures. An optimized ratio of am

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3cc3cbe056c4ad6453689748bd84dd3
https://doi.org/10.1016/j.colsurfa.2022.130849

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Restricted suitability of BODIPY for caging in biological applications based on singlet oxygen generation

Autor: Anja Steffen-Heins, Björn Jansen, Christian Peifer, Melanie Krebs, Theo Rodat, Karin Schwarz, Alexander Döbber

Publikováno v: Photochemical & Photobiological Sciences. 19:1319-1325

Recent studies report the boron-dipyrromethene (BODIPY) moiety to be interesting for caging applications in photopharmacology based on its response to irradiation with wavelengths in the biooptical window. Thus, in a model study, we investigated the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba5ec753c8f68f2f562e1ead99434c54
https://doi.org/10.1039/d0pp00097c

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Mitochondrial alternative NADH dehydrogenases NDA1 and NDA2 promote survival of reoxygenation stress in Arabidopsis by safeguarding photosynthesis and limiting ROS generation

Autor: Jay, Jethva, Sophie, Lichtenauer, Romy, Schmidt-Schippers, Anja, Steffen-Heins, Gernot, Poschet, Markus, Wirtz, Joost T, van Dongen, Jürgen, Eirich, Iris, Finkemeier, Wolfgang, Bilger, Markus, Schwarzländer, Margret, Sauter

Plant submergence stress is a growing problem for global agriculture. During desubmergence, rising O2 concentrations meet a highly reduced mitochondrial electron transport chain (mETC) in the cells. This combination favors the generation of reactive

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid_dedup__::ccc9479cede8c6bcaba9a6c25cc6114a
https://pub.uni-bielefeld.de/record/2967680

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Analysis of Natural and Engineered Amyloid Aggregates by Spectroscopic and Scattering Techniques

Autor: Anja Steffen-Heins, Timon R. Heyn, Julia K. Keppler, V. M. Garamus, Karin Schwarz

Publikováno v: Soft Matter Systems for Biomedical Applications
Springer Proceedings in Physics ISBN: 9783030809232
Soft Matter Systems for Biomedical Applications. Cham: Springer

The increasing knowledge about natural functional fibrils has triggered the interest in synthetic or engineered fibrils. Naturally occurring amyloid fibrils (functional and pathogenic) have been analyzed for many years at different structural levels.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1a803f96c361f180b5361f08fa81c3fd
https://doi.org/10.1007/978-3-030-80924-9_11

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Adsorption of β-lactoglobulin to solid lipid nanoparticles (SLN) depends on encapsulated compounds

Autor: Ralf Greiner, Julia K. Keppler, Johanna Milsmann, Anja Steffen-Heins, Esther Mayer-Miebach, Kathleen Oehlke

Publikováno v: Journal of Food Engineering 247 (2019)
Journal of Food Engineering, 247, 144-151

When carrier systems like solid lipid nanoparticles (SLN) are added to a protein rich food matrix adsorption of protein to the particles alters the surface properties of SLN which in turn can alter the properties of the whole system. Thus, the effect

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc85b7cd741c3c46c955bee454d16838
https://doi.org/10.1016/j.jfoodeng.2018.12.005

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Fate of edible solid lipid nanoparticles (SLN) in surfactant stabilized o/w emulsions. Part 1: Interplay of SLN and oil droplets

Autor: Katrin Schrader, Anja Steffen-Heins, Kathleen Oehlke, Johanna Milsmann, Ralf Greiner

Publikováno v: Colloids and Surfaces A: Physicochemical and Engineering Aspects. 558:615-622

Edible solid lipid nanoparticles (SLN) stabilized by a mixture of food grade emulsifiers (soy bean lecithin, Tween 20, sucrose stearate) were added to o/w emulsions previously stabilized by anionic SDS, non-ionic Tween 20 or cationic CTAB. The aim of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ead34bb6530bf3e2225a660fb82653cf
https://doi.org/10.1016/j.colsurfa.2017.05.073

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Fate of edible solid lipid nanoparticles (SLN) in surfactant stabilized o/w emulsions. Part 2: Release and partitioning behavior of lipophilic probes from SLN into different phases of o/w emulsions

Autor: Kathleen Oehlke, Johanna Milsmann, Ralf Greiner, Anja Steffen-Heins

Publikováno v: Colloids and Surfaces A: Physicochemical and Engineering Aspects. 558:623-631

The release and partitioning of encapsulated compounds from solid lipid nanoparticles (SLN) to other matrix constituents was investigated in o/w emulsions stabilized by different surfactants (CTAB, SDS, Tween 20) by confocal laser scanning microscopy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::65b360ab8923f8a151415a573f0406b8
https://doi.org/10.1016/j.colsurfa.2017.05.050

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Amyloid aggregation of spin-labeled β-lactoglobulin. Part II : Identification of spin-labeled protein and peptide sequences after amyloid aggregation

Autor: Mykhailo Azarkh, Malte Drescher, Laura Fitzner, Julia K. Keppler, Karin Schwarz, Anja Steffen-Heins, Jacqueline Lux

Publikováno v: Food Hydrocolloids, 112
Food Hydrocolloids 112 (2021)

Site-directed spin labeling (SDSL) of natural β-lactoglobulin (β-lg) was established. Combined electron paramagnetic resonance (EPR) and mass spectrometric analysis following tryptic digestion demonstrated that spin labels bind site-specifically bu

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Amyloid aggregation of spin-labeled β-lactoglobulin. Part I : Influence of spin labeling on amyloid aggregation

Autor: Ingo Kampen, Julia K. Keppler, Jacqueline Lux, Karin Schwarz, Anja Steffen-Heins, Timon R. Heyn

Publikováno v: Food Hydrocolloids, 112
Food Hydrocolloids 112 (2021)

Site-directed spin labeling (SDSL) of the natural food protein β-lactoglobulin (β-lg) was established with the aim of characterizing amyloid aggregation while explicitly avoiding the usual manipulation of primary protein structure. For its successf

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