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Jedlé obaly na bázi mléčných proteinů – příprava, vlastnosti a aplikace v potravinářství
Smetanová, Barbora
Nowadays, huge attention is paid on the research and development of edible films and coatings due to their biodegradability, low price and easy availability. The goal of this diploma thesis was the development of the composition of biodegradable films and coatings based on milk proteins and their deposition on the food as semi-hard unripened cheese. By solution casting method, the series of films enriched with whey proteins of different processing technology origin was prepared. For comparison, biodegradable films based on polycaprolactone were prepared by solution casting method. The films were characterized by UV vis spectroscopy, near and mid-infrared spectrometry, aby by colorimetric analysis. The swelling test proved the impact of partially denatured whey isolate on the increase in hydrophobic character of film. By dipping, selected coating mixture was deposited on the cheese samples, which were subsequently stored at 7 °C for 7 days.
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Perspektivy využití laktoferinu
Pavlík, Patrik
The thesis is focused on summarization of knowledge on lactoferrin, its sources of production, methods of isolation, biochemical properties, structure and resistance to denaturation under different conditions. At the same time, the biological effects of lactoferrin on the human body are specified, mainly focusing on antiviral effects, immune support and athletes performance enhancement. Moreover, the encapsulation methods of Lf and its delivery to the body are described here, where the most effective method of Lf, still remains the oral administration method. The current utilization of Lf in food processing and other fields is discussed. In the experimental part, food matrices suitable for 3D printable edible coating were prepared. By following encapsulation of Lf into food matrix, a functional food can be developed.
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