Harald Schöbel
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View article: From process to product: exploring microbial diversity in paints
From process to product: exploring microbial diversity in paints Open
Although water-based paint is increasingly being advocated as environmentally friendly, it is more susceptible to biodeterioration during processing, preparation, and storage. Therefore, sufficient proactive measures are urgently needed to…
View article: Ultraviolet (Spot)light on Water Treatment: Targeting Inactivation Efficiency and Stress Responses of Gram-Positive and Gram-Negative Bacteria Using UV-B and UV-C LEDs
Ultraviolet (Spot)light on Water Treatment: Targeting Inactivation Efficiency and Stress Responses of Gram-Positive and Gram-Negative Bacteria Using UV-B and UV-C LEDs Open
This study examines the inactivation kinetics and stress responses of Gram-positive and Gram-negative waterborne bacteria using ultraviolet (UV)-B and UV-C LEDs at varying fluences. Our findings show that UV-light-emitting diodes (LED) tre…
View article: Light-mediated biosynthesis of size-tuned silver nanoparticles using Saccharomyces cerevisiae extract
Light-mediated biosynthesis of size-tuned silver nanoparticles using Saccharomyces cerevisiae extract Open
Bio-based production of silver nanoparticles represents a sustainable alternative to commercially applied physicochemical manufacturing approaches and provides qualitatively highly valuable nanomaterials due to their narrow size dispersity…
View article: The Light-activated Effect of Natural Anthraquinone Parietin against Candida auris and Other Fungal Priority Pathogens
The Light-activated Effect of Natural Anthraquinone Parietin against Candida auris and Other Fungal Priority Pathogens Open
Antimicrobial photodynamic therapy (aPDT) is an evolving treatment strategy against human pathogenic microbes such as the Candida species, including the emerging pathogen C. auris. Using a modified EUCAST protocol, the light-enhanced antif…
View article: Illuminating Life Sciences: A Biophysical Guide to the Use of Chromatic and White Light Sources in Photobiology
Illuminating Life Sciences: A Biophysical Guide to the Use of Chromatic and White Light Sources in Photobiology Open
With the increasing availability of LEDs, researchers in photobiology have easier access to customized light sources. However, the abundance of different light sources poses new challenges for the correct characterization of existing light…
View article: Breaking the Mold: Towards Rapid and Cost-Effective Microbial Contamination Detection in Paints and Cosmetics Using ATP-Bioluminescence
Breaking the Mold: Towards Rapid and Cost-Effective Microbial Contamination Detection in Paints and Cosmetics Using ATP-Bioluminescence Open
Traditional culture-based methods, though a “gold standard” for bacterial detection in various industrial sectors, do often not fulfill today’s high requirements regarding rapidity, on-site applicability, and cost-efficiency both during op…
View article: Optical simulations in life-sciences: Benefiting from ray-tracing in biotechnology and photobiology
Optical simulations in life-sciences: Benefiting from ray-tracing in biotechnology and photobiology Open
The advent of LED technology opened up new possibilities for the implementation of versatile and complex illumination systems for photobiological and biophotonic studies. However, these new lighting systems also increase the requirement fo…
View article: Beyond Cultivation: Combining Culture-Dependent and Culture-Independent Techniques to Identify Bacteria Involved in Paint Spoilage
Beyond Cultivation: Combining Culture-Dependent and Culture-Independent Techniques to Identify Bacteria Involved in Paint Spoilage Open
Due to globally increasing problems concerning biodeterioration of paints, it is worthwhile to enhance the determination of colony forming units (CFU) as a gold standard method via more rapid and culture-independent techniques. Here, we co…
View article: Shed light on photosynthetic organisms: a physical perspective to correct light measurements
Shed light on photosynthetic organisms: a physical perspective to correct light measurements Open
The requirements for novel and innovative production systems expedite research on light emitting diode-based illumination in a life science context. In course of these rapid developments, the scientific community is in need of a consensus …
View article: Antimicrobial efficacy and inactivation kinetics of a novel LED-based UV-irradiation technology
Antimicrobial efficacy and inactivation kinetics of a novel LED-based UV-irradiation technology Open
Overall, the results support the use of LEDs emitting at shorter wavelengths of the UV-C spectrum to inactivate bacteria as well as enveloped and non-enveloped viruses by exposure to the appropriate UV dose. However, low availability and e…
View article: Enhancing carotenogenesis in terrestrial microalgae by UV-A light stress
Enhancing carotenogenesis in terrestrial microalgae by UV-A light stress Open
Carotenoids are among the most widely distributed pigments in nature with broad application options in pharmacology, cosmetics and food industries. For commercial-scale production using microalgae, however, it is crucial to find the best p…
View article: Feature-Based Molecular Networking—An Exciting Tool to Spot Species of the Genus Cortinarius with Hidden Photosensitizers
Feature-Based Molecular Networking—An Exciting Tool to Spot Species of the Genus Cortinarius with Hidden Photosensitizers Open
Fungi have developed a wide array of defense strategies to overcome mechanical injuries and pathogen infections. Recently, photoactivity has been discovered by showing that pigments isolated from Cortinarius uliginosus produce singlet oxyg…
View article: A New High-Throughput-Screening-Assay for Photoantimicrobials Based on EUCAST Revealed Unknown Photoantimicrobials in Cortinariaceae
A New High-Throughput-Screening-Assay for Photoantimicrobials Based on EUCAST Revealed Unknown Photoantimicrobials in Cortinariaceae Open
Antimicrobial resistance is one of the biggest health and subsequent economic threat humanity faces. Next to massive global awareness campaigns, governments and NGOs alike stress the need for new innovative strategies to treat microbial in…
View article: A new High-Throughput-Screening-assay for Photoantimicrobials Based on EUCAST Revealed Photoantimicrobials in Cortinariaceae
A new High-Throughput-Screening-assay for Photoantimicrobials Based on EUCAST Revealed Photoantimicrobials in Cortinariaceae Open
A spark of light might unravel antimicrobial activity of colored compounds, which otherwise would have been classified as inactive. While many mushrooms contain such colorful pigments but lack antimicrobial activity, we wondered if a contr…
View article: Electronic transitions in Rb2+ dimers solvated in helium
Electronic transitions in Rb2+ dimers solvated in helium Open
We have measured depletion spectra of the heteronuclear ( 85 Rb 87 Rb + ) dimer cation complexed with up to 10 He atoms. Two absorption bands are observed between 920 and 250 nm. The transition into the repulsive 1 2 Σ u + state of HeRb 2 …