Effectiveness of chitosan-based coating in improving shelf-life of eggs
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Tarih
2007
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Wiley
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Despite eggs having a natural packaging - shell - they are perishable and can lose their quality during storage. Chitosan-based coatings were applied to shell eggs to examine potential effects on egg quality properties (weight loss, Haugh unit, yolk index) during 4 weeks of storage. Mineral amounts in yolks were also evaluated after 4 weeks of storage. Three chitosan-based coatings produced with organic acids (acetic-(C-AA), lactic-(C-LA), and propionic (C-PA)) were evaluated on shelf-life enhancements of fresh egg quality. All chitosan-coated eggs showed greater interior quality than the non-coated eggs. The coatings significantly maintained weight loss compared to the control specimen (4.96%). Lower weight loss (3.45% for C-PA, 3.53% for C-LA) was observed in the coated eggs. Eggshell chitosan coat containing lactic and propionic acids maintained higher Haugh unit and yolk index than eggs coated with acetic acid. Uncoated (UC) eggs changed from grade 'A' to 'B' after 1 week of storage. Chitosan-based coating containing lactic and propionic acids maintained eggs in grade 'A' for 4 weeks. Haugh unit showed that C-LA and C-PA effectively maintained eggs at grade 'A' quality for at least 3 weeks more than control and I week more than C-AA. Results also indicated that the chitosan coating maintained mineral amounts at nutritional values (especially calcium, iron and magnesium concentration) in yolks after 4 weeks storage. (c) 2006 Society of Chemical Industry
Açıklama
Anahtar Kelimeler
chitosan, coating, shell eggs, shelf-life, Haugh unit, yolk index, ICP
Kaynak
Journal of The Science of Food and Agriculture
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
87
Sayı
2
