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Developement and characterization of high protein plant-based yogurt
Smatana, Igor ; Vítová, Eva (oponent) ; Pořízka, Jaromír (vedoucí práce)
The thesis was focused on the production and characterization of plant-based yogurts with increased protein content. The aim was to design and optimize the formula of new plant-based products. The motivation for this work was the ever-increasing demand for plant-based food alternatives in recent years. The theoretical part was focused on the trend of development of dairy alternatives as well as the nutritional challenges associated with modern diets such as vegetarianism and veganism. Focus was also on the nutritional importance of protein and the composition of proteins of plant origin. The impact of live bacteria on human health, as well as common analytical methods for determining rheological and sensory properties was also included. In the experimental part, the methods used for the preparation and characterization of novel plant-based high-protein yogurts were described. The results showed that the biggest challenge in the production of plant-based yogurts, without added stabilizing agents, is to achieve an acceptable texture, so that the products are neither too watery nor too tough, while maintaining suitable sensory properties. For the products with the addition of 20 g of almond protein, this texture was almost achieved, while maintaining the appropriate sensory characteristics. In contrast, for products containing 10 g almond protein and 6 g of pea or rice protein, the texture was unacceptable and the products were splitting into 2 phases.
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Development and characterization of new dairy products with increased fiber and protein content
Smatana, Igor ; Punčochářová, Lenka (oponent) ; Pořízka, Jaromír (vedoucí práce)
The bachelor thesis was focused on the production and characterization of new dairy products with increased protein and fiber content. Ground wheat bran was used as the fiber source and wheat bran protein extract was used as the protein source. From an ecological point of view, it would be ideal if 100% of the raw material was used and nothing was left as waste. We tried to approach this by using the waste (by-product) that arises during the production of flour as an additive to dairy products. The theoretical part focused on the characterization of fermented and unfermented dairy products and their production, the nutritional value of proteins and fiber and the composition and benefits for human health of wheat bran, protein isolation from wheat bran and common analytical methods to determine rheological properties, viable cell numbers. water binding and sensory acceptability. Two basic dairy products were created, one fermented and one unfermented, and subsequently fortified with a source of fiber (wheat bran) and a source of protein (protein concentrate from wheat bran). All products were subsequently characterized for characterization. Water binding, rheological and sensory properties were determined. The fermented dairy product was also subjected to cytometric analysis to determine the number of viable cells. The experimental part describes the methods we use to prepare and characterize new products. After evaluating the measured data, options for optimizing the acceptability of products by consumers were proposed. The results showed that the organoleptic properties were negatively affected by the addition of wheat bran and protein concentrate.
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Development and characterization of new dairy products with increased fiber and protein content
Smatana, Igor ; Punčochářová, Lenka (oponent) ; Pořízka, Jaromír (vedoucí práce)
The bachelor thesis was focused on the production and characterization of new dairy products with increased protein and fiber content. Ground wheat bran was used as the fiber source and wheat bran protein extract was used as the protein source. From an ecological point of view, it would be ideal if 100% of the raw material was used and nothing was left as waste. We tried to approach this by using the waste (by-product) that arises during the production of flour as an additive to dairy products. The theoretical part focused on the characterization of fermented and unfermented dairy products and their production, the nutritional value of proteins and fiber and the composition and benefits for human health of wheat bran, protein isolation from wheat bran and common analytical methods to determine rheological properties, viable cell numbers. water binding and sensory acceptability. Two basic dairy products were created, one fermented and one unfermented, and subsequently fortified with a source of fiber (wheat bran) and a source of protein (protein concentrate from wheat bran). All products were subsequently characterized for characterization. Water binding, rheological and sensory properties were determined. The fermented dairy product was also subjected to cytometric analysis to determine the number of viable cells. The experimental part describes the methods we use to prepare and characterize new products. After evaluating the measured data, options for optimizing the acceptability of products by consumers were proposed. The results showed that the organoleptic properties were negatively affected by the addition of wheat bran and protein concentrate.
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