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Development and characterization of new dairy products with increased fiber and protein content
Smatana, Igor ; Punčochářová, Lenka (referee) ; Pořízka, Jaromír (advisor)
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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