Effect of Plasticizer Concentration and Solvent Types on Shelf-life of Eggs Coated with Chitosan |
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| Authors: | Su Hyun Kim Hong Kyoon No Soon Dong Kim Witoon Prinyawiwatkul |
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| Affiliation: | Authors Kim, No, and Kim are with Dept. of Food Science and Technology, Catholic Univ. of Daegu, Hayang 712 −702, South Korea. Author Prinyawiwatkul is with Dept. of Food Science, Louisiana State Univ. Agricultural Center, Baton Rouge, LA 70803, USA. Direct inquiries to author No;(E-mail: ). |
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| Abstract: | ABSTRACT: Effects of plasticizer concentrations (0, 0.5, 1.0, 1.5, and 2.0% glycerol) and solvent types (1% acetic and 1% lactic acid) on internal quality of eggs coated with 2% chitosan solution were evaluated during 5 wk of storage at 25 °C. In comparison of plasticizer concentrations, eggs coated with chitosan dissolved in acetic acid containing 2% glycerol showed significant reduction in weight loss compared with the noncoated eggs during 5 wk of storage. At 2% glycerol, the Haugh unit and yolk index values suggested that chitosan-coated eggs can be preserved for at least 3 wk longer than the control noncoated eggs during 5 wk of storage at 25 °C. Use of acetic acid rather than lactic acid as a chitosan solvent was more advantageous in view of shelf-life extension of eggs. |
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| Keywords: | chitosan-coated egg Haugh unit plasticizer shelf-life yolk index |
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