Results 1 to 10 of about 2,209,327 (291)

Marker Substances in the Aroma of Truffles

Molecules, 2022
The aim of this study was to identify specific truffle marker substances within the truffle aroma. The aroma profile of different truffle species was analyzed using static headspace sampling with gas chromatography mass spectrometry analysis (SHS/GC-MS).
Ruben Epping, Lilly Bliesener, Tilman Weiss, Matthias Koch   +3 more
doaj   +1 more source

Investigating the uptake and fate of per- and polyfluoroalkylated substances (PFAS) in bean plants (Phaseolus vulgaris): comparison between target MS and sum parameter analysis via HR-CS-GFMAS

Environmental Sciences Europe, 2023
In this study, we present a screening method based on molecular absorption spectrometry to study PFAS uptake and fate in plants. To evaluate the suitability of this method we analyzed plant extracts with molecular absorption spectrometry (MAS) as well as
Lennart Gehrenkemper, Isabel Rühl, Tanja Westphalen, Fabian Simon, Marcus von der Au, Antje Cossmer, Björn Meermann   +6 more
doaj   +1 more source

Screen-Printable Functional Nanomaterials for Flexible and Wearable Single-Enzyme-Based Energy-Harvesting and Self-Powered Biosensing Devices

Nano-Micro Letters, 2023
Highlights Screen-printable functional nanocomposite inks are engineered for flexible, single-enzyme-based energy-harvesting, and self-powered biosensing devices.
Kornautchaya Veenuttranon, Kanyawee Kaewpradub, Itthipon Jeerapan   +2 more
doaj   +1 more source

Glucose Oxidase/Egg White Protein Microparticles with a Redox Mediator for Glucose Biosensors on a Screen-Printed Electrode and a Decomposable Electrode

Biosensors, 2023
Glucose oxidase (GOx) is a typical model enzyme used to create biosensors. Exploring a strategy to prepare ready-to-use functional enzymatic microparticles combining GOx and food-based proteins offers compelling advantages.
Natcha Rasitanon, Parinthorn Rattanapan, Kanyawee Kaewpradub, Chittanon Buranachai, Itthipon Jeerapan   +4 more
doaj   +1 more source

On-Site Detection of Volatile Organic Compounds (VOCs)

Molecules, 2023
Volatile organic compounds (VOCs) are of interest in many different fields. Among them are food and fragrance analysis, environmental and atmospheric research, industrial applications, security or medical and life science.
Ruben Epping, Matthias Koch
doaj   +1 more source

Chemometric approach to find relationships between physiological elements and elements causing toxic effects in herb roots by ICP-MS

Scientific Reports, 2021
In this paper 13 elements, both physiological and causing toxic effects, were determined by inductively coupled plasma mass spectrometry in roots of 26 species of herbs used in Traditional Chinese Medicine.
Adam Sajnóg, Elwira Koko, Dariusz Kayzer, Danuta Barałkiewicz   +3 more
doaj   +1 more source

Effects of a realistic pesticide spraying sequence for apple crop on stream communities in mesocosms: negligible or notable?

Environmental Sciences Europe, 2023
Background Several large-scale studies revealed impacts and risks for aquatic communities of small rural lakes and streams due to pesticides in agricultural landscapes.
Silvia Mohr, Stefan Meinecke, Michael Feibicke, Sabine Duquesne, Tobias Frische, René Sahm   +5 more
doaj   +1 more source

Formal analysis of trace conditioning [PDF]

Cognitive Systems Research, 2007
In the literature classical conditioning is usually described and analysed informally. If formalisation is used, this is often based on mathematical models based on difference or differential equations. This paper explores a formal description and analysis of the process of trace conditioning, based on logical specification and analysis methods of ...
Tibor Bosse, Catholijn M. Jonker, Sander A. Los, Leendert W. N. van der Torre, Jan Treur   +4 more
openaire   +2 more sources

Growth at the limits: comparing trace metal limitation of a freshwater cyanobacterium (Dolichospermum lemmermannii) and a freshwater diatom (Fragilaria crotonensis)

Scientific Reports, 2022
Freshwater phytoplankton blooms are increasing in prevalence and there are conflicting views on whether trace metals limit growth of key species and thus bloom formation.
Markus Dengg, Claudine H. Stirling, Malcolm R. Reid, Piet Verburg, Evelyn Armstrong, Laura T. Kelly, Susanna A. Wood   +6 more
doaj   +1 more source

Development of a Hydrazine-Based Solid-Phase Extraction and Clean-Up Method for Highly Selective Quantification of Zearalenone in Edible Vegetable Oils by HPLC-FLD

Toxins, 2022
Rapid, cost-efficient, and eco-friendly methods are desired today for routine analysis of the Fusarium mycotoxin zearalenone (ZEN) in edible vegetable oils. Liquid chromatography with fluorescence detection (HPLC-FLD) is commonly used to reliably control
Matthias Koch, Tatjana Mauch, Juliane Riedel   +2 more
doaj   +1 more source