A5057062650- Metabolomics and Mass Spectrometry Studies
- Nuts composition and effects
- Spectroscopy and Chemometric Analyses
- Fermentation and Sensory Analysis
- Freezing and Crystallization Processes
- Identification and Quantification in Food
- Bee Products Chemical Analysis
- Enzyme Structure and Function
- Isotope Analysis in Ecology
- Spectroscopy Techniques in Biomedical and Chemical Research
- Essential Oils and Antimicrobial Activity
- Amino Acid Enzymes and Metabolism
- Advanced Chemical Sensor Technologies
- Microbial Metabolic Engineering and Bioproduction
Universität Hamburg
2022-2024
MSH Medical School Hamburg – University of Applied Sciences and Medical University
2022-2024
Abstract The detection of raw material defects, e.g., due to incorrect or excessively long storage, is an important issue in incoming goods inspections the food industry. Fast and easy-to-use analytical methods for evaluating usability materials are particularly important. In this study, applicability Fourier transform near-infrared (FT-NIR) spectroscopy spatially offset Raman (SORS) defects was evaluated. For purpose, six hazelnut batches stored at different temperatures, humidity levels,...
The importance of animal welfare and the organic production chicken eggs has increased in European Union recent years. Legal regulation for husbandry makes more expensive compared to conventional thus increases risk food fraud. Therefore, aim this study was develop a non-targeted lipidomic LC-ESI-IM-qToF-MS method based on 270 egg samples, which achieved classification accuracy 96.3%. Subsequently, surrogate minimal depth (SMD) applied select important variables identified as carotenoids...
Storage is a critical step in the post-harvest processing of hazelnuts, as it can lead to mold, rancidity, and off-flavor. However, there lack analytical methods detect improper or extended storage. To comprehensively investigate effects hazelnut storage, samples were stored under five different conditions for up 18 months. Subsequently, polar nonpolar metabolome analyzed by 1H NMR spectroscopy chemometric approaches classification well variable selection. Increases hexanoic, octanoic,...
Abstract Near-infrared (NIR) spectroscopy is a proven tool for the determination of food authenticity, mainly because good classification results and possibility industrial use due to its easy fast application. Since water shows broad absorption bands, content sample should be as low possible. Freeze-drying commonly used preparatory step this reduce in sample. However, freeze-drying, also known lyophilization, very time-consuming impeding widespread usage NIR analysis rapid method incoming...
Studying the metabolic role of non-essential promiscuous enzymes is a challenging task, as genetic manipulations usually do not reveal at which point(s) network enzymatic activity such protein beneficial for organism. Each HAD-like phosphatases YcsE, YitU and YwtE Bacillus subtilis catalyzes dephosphorylation 5-amino-6-ribitylamino-uracil 5'-phosphate, essential in biosynthesis riboflavin. Using CRISPR technology, we have found that deletion these genes, individually or all possible...
Storage is a critical step in post-harvest processing of hazelnuts since it can lead to mold, rancidity and off-flavor. To comprehensively investigate the effects hazelnut storage, samples were stored under three short-term two long-term conditions polar metabolome was analyzed by 1H NMR spectroscopy at different timepoints. Large differences observed between investigated storage conditions. Classification pre- post-storage showed that harsh for short period standard almost always classified...
Storage is a critical step in post-harvest processing of hazelnuts since it can lead to mold, rancidity and off-flavor. To comprehensively investigate the effects hazelnut storage, samples were stored under three short-term two long-term conditions polar metabolome was analyzed by 1H NMR spectroscopy at different time points. Large differences observed between investigated storage conditions. Classification before after showed that harsh for standard almost always classified correctly....