Effect of Plasticizer Concentration and Solvent Types on Shelf-life of Eggs Coated with Chitosan

• Autores: Su Hyun Kim, Hong Kyoon No, Soon Dong Kim, Witoon Prinyawiwatkul
• Localización: Journal of food science, ISSN 0022-1147, Vol. 71, Nº 4, 2006
• Idioma: inglés
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• Resumen

  • 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.