Studente DAVYDZENKA, KATSIARYNA
Facoltà/Dipartimento Dip.Scienze Agrarie,Alimentari e Ambientali
Corso di studio FOOD AND BEVERAGE INNOVATION AND MANAGEMENT
Anno Accademico 2019
Data dell'esame finale 2020-10-08
Titolo italiano Clotting properties of Onopordum tauricum aqueous extract in milk of different species
Titolo inglese Clotting properties of Onopordum tauricum aqueous extract in milk of different species
Abstract in italiano Plant coagulants have become a subject of growing interest in cheese industry due to their easy availability and simple purification process. The milk clotting potential of Onopordum tauricum (Willd.) aqueous extract as an alternative to animal rennet was assessed for the first time in milk of different species (ewe, goat, cow). Among the aerial anatomical parts, i.e., receptacle, leaves, stems, and flowers, only the latter ones showed clotting properties. A response surface methodology (RSM) was used to explore the effects of three independent variables (temperature, pH, volume of coagulant) on the milk clotting activity (MCA) of the flower extract. A second-order polynomial model adequately described the experimental data and predicted a temperature value of 55 °C, a pH value of 4.9–5.7, and a volume of coagulant of 300–500 μL (added to 5 mL of milk) as optimal conditions to maximize the MCA. At a 35 °C temperature and natural milk pH of 6.7–6.8, the estimated MCA of the O. tauricum extract was 72–87, 69–86, and 75–151, in goat’s, ewe’s, and cow’s milk, respectively. In comparison, the MCA of calf rennet was 5.4–4.9, 3.3–14.7, and 4.9–16.7 times higher than that of the plant extract in goat’s, ewe’s, and cow’s milk, respectively.
Relatore MOZZON, MASSIMO
Controrelatore MANNOZZI, CINZIA
Appare nelle tipologie: Laurea specialistica, magistrale, ciclo unico
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Thesis_LM FABIAM_Katsiaryna Davydzenka3.pdf   fino a2022-10-07 Clotting properties of Onopordum tauricum aqueous extract in milk of different species 3.73 MB Adobe PDF
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.12075/4439