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The egg is an animal-derived food with remarkable nutritional value, providing a balanced intake of essential nutrients and high digestibility, making it suitable for all age groups. This study aims to analyze the impact of different hen-rearing systems on egg characteristics, including their mass, the proportion of components (egg white, yolk, shell), and the content of minerals and metals. To determine the quantity of metals in the various egg components (shell, egg white, yolk), the X-ray fluorescence (XRF) met...

Horseradish peroxidase (HRP) is an enzyme belonging to the oxidoreductase class with applications in biotechnology and the food industry, environmental depollution and clinical diagnosis. HRP is an effective biocatalyst in the oxidation of organic compounds. Many biotechnology fields, such as environmental applications and the pharmaceutical industry, require stable peroxidase-based biocatalytic systems. The goal of our work was to develop efficient immobilized biocatalysts containing HRP. HRP immobilization was p...