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Enhancement of the Water-resistance and Physical Properties of Sodium Alginate Film  

Kim, Eun-Jung (Department of Food Engineering, Kyung Hee University)
Kim, Byung-Yong (Department of Food Engineering, Kyung Hee University)
Rhim, Jong-Whan (Department of Food Engineering, Mokpo National University)
Publication Information
Food Science and Biotechnology / v.14, no.1, 2005 , pp. 108-111 More about this Journal
Abstract
To improve water-resistance and physical properties of sodium alginate film, effects of sodium alginate and plasticizer concentrations, divalent cation types and concentrations, and immersion time of films into divalent cation solutions on sodium alginate films were evaluated, based on elongation strength (ES), elongation rate (E), water vapor permeability (WVP), and water solubility (WS). Film made from 1.5% sodium alginate solution (w/w) had low WVP and WS, which are optimal characteristics for application of film preparation. Addition of plasticizer increased E and WS. Less than 2% $CaCl_2$ addition and 15min immersion time reduced WVP, WS, and E significantly (p<0.05). Sodium alginate films treated with $CuCl_2$, and $ZnCl_2$ solutions had lower WVP and WS, whereas $MgCl_2$ had no influence on improving water resistance of films.
Keywords
Na-aginate film; divalent cations; plasticizer; immersion time;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
Times Cited By Web Of Science : 3  (Related Records In Web of Science)
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