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Influence of Ice Recrystallization on Rheological Characteristics of Ice Slurries and Physicochemical Properties of Concentrated Milk  

Park, Sung-Hee (Department of Food Science and Biotechnology of Animal Resources, Konkuk University)
Kim, Jee-Yeon (Department of Food Science and Biotechnology of Animal Resources, Konkuk University)
Hong, Geun-Pyo (Department of Food Science and Biotechnology of Animal Resources, Konkuk University)
Kwak, Hae-Soo (Department of Food Science and Technology, Sejong University)
Min, Sang-Gi (Department of Food Science and Biotechnology of Animal Resources, Konkuk University)
Publication Information
Food Science and Biotechnology / v.15, no.5, 2006 , pp. 756-762 More about this Journal
Abstract
Freeze concentration of milk was carried out through the controlled recrystallization of ice in a multi-stage freeze concentrator. Rheological characteristics of ice slurries were analyzed to determine efficient concentration levels for the freeze concentration process. It was determined that efficient concentration level was 17% of total solids in the first and 27% in the second stage. Physicochemical properties were compared between freeze concentrated and evaporated milk. Freeze concentrated milk was more similar in color appearance to control milk than was evaporated milk. pH significantly decreased in evaporated milk than in freeze concentrated milk. pH of freeze concentrated milk resulted in similar value to control. These results indicated the advantages of freeze concentration as a non-thermal milk processing technology in terms of physicochemical properties. Consequently, we investigated the influence of ice recrystallization on the rheological characteristics of ice slurries and physicochemical properties of freeze concentrated milk.
Keywords
freeze concentration; recrysallization; milk; rheological properties;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
Times Cited By Web Of Science : 2  (Related Records In Web of Science)
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