Umami (“hartigheid”) is één van de vijf basissmaken en is in het begin van de vorige eeuw ontdekt in zeewier. Umami wordt veroorzaakt door bepaalde vormen van aminozuren, en daar wilden we het fijne van weten. In dit project hebben we eiwitten en de aminozuren waaruit die zijn opgebouwd chemisch gekarakteriseerd …

This research is to investigate to what extend the NIOSH-7605 and ISO-16740 methods can be used to determine insoluble hexavalent chromium in air. The methods were tested and optimized on the extraction and sample preparation steps. After optimization the methods were validation on limit of detection …

An attempt was made to develop a method for the determination of volatile organic compounds (VOCs) in air by gas chromatography mass spectrometry (GC-MS) analysis and chemical sample desorption of the 3M 3500 passive diffusion sampler. The method included a complex mixture of 205 polar and non-polar …

During this research project the influence of selenium enriched growing environment on the phenolic composition on several Allium species is studied. Besides this, the influence on morphological properties is also monitored. Folin-Ciocalteu method is used to determine the total phenolic content and High …

A method for directly analysing the nickel content of organic samples by flame atomic absorption is validated. This method is developed to bypass the conventional preparation step for aqueous atomic absorption, which is microwave digestion. The working range of the method is 0 – 30 ppm. The limits of …

Alzheimer’s disease is the leading cause of dementia affecting over 46 million worldwide, yet contemporary medication is unable to prevent or slow its neurodegeneration. Recently, fucosterol and saringosterol, two phytosterols from brown macroalgae, have emerged as possible mediators of the disease. …

In this study, various extraction methods were compared based on their ability to extract both free amino acids, and free 5’-monophosphate nucleotides from the seaweed Saccharina latissima. Based on the results, extraction at room temperature with Milli-Q over 24 hours was chosen as the method of choice, …