Department of Food Analysis and Nutrition

Granting Departments:	Department of Food Analysis and Nutrition
Study Programme/Specialization:	Food and Natural Products ( in English language )
Supervisor:	doc. Ing. Darina Dvořáková, Ph.D.

Annotation

This dissertation will focus on the development of analytical methods for determining a wide range of per- and polyfluoroalkyl substances (PFAS) in the environment, including food and drinking water, which are the main dietary sources of human exposure. The work aims to extend existing methods to include new substances, such as short-chain carboxylic acids (C2-C3), unsaturated perfluoroalkyl acids, telomeric compounds including their precursors. The research will also explore the implementation of novel procedures in the analysis of PFAS, specifically total oxidable precursors. In case of food, attention will be given to commodities recommended by the European Commission (EU 2022/1431) for monitoring. Liquid chromatography coupled with mass spectrometry will be employed for analysing targeted chemicals, for some substances gas chromatography with mass spectrometry will also be applied. The new analytical procedures will be used to assess the environmental burden and dietary exposure of the Czech population to these substances. This work provides a new data necessary for the complex risk assessment associated with the exposure of different population groups to these substances. Additionally, it will serve as a basis for implementing new European legislation in the following years.

Granting Departments:	Department of Food Analysis and Nutrition
Study Programme/Specialization:	Food and Natural Products ( in English language )
Supervisor:	prof. Dr. Ing. Jan Poustka

Annotation

The main topic of the dissertation is the application of selected instrumental methods such as infrared spectrometry or mass spectrometry with the aim of optimizing the rapid characterization of various food raw materials and products, including through advanced mathematical-statistical methods inclusive multivariate data analysis. Then compare these methods with sensory evaluation and thus create a comprehensive view of the overall quality evaluation in connection not only with legislative requirements but also with requirements for target sensory quality. The goal of the work is to develop analytical procedures for various materials suitable for their characterization so that they can be used for a meaningful comparison with sensory analysis for evaluation, for example, according to origin or degree of technological processing.