Effect of egg shape index on mechanical properties of chicken eggs      
Yazarlar (2)
Prof. Dr. Ebubekir ALTUNTAŞ Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Ahmet Şekeroğlu
Niğde Üniversitesi, Türkiye
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı Journal of Food Engineering
Dergi ISSN 0260-8774 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q4
Makale Dili İngilizce
Basım Tarihi 04-2008
Cilt No 85
Sayı 4
Sayfalar 606 / 612
DOI Numarası 10.1016/j.jfoodeng.2007.08.022
Makale Linki http://linkinghub.elsevier.com/retrieve/pii/S0260877407004633
Özet
Eggs are available in different shapes. These shapes can be differentiated using a shape index (SI). The shapes most often encountered are sharp, normal (standard), and round eggs which are enumerated on the SI as <72, 72-76, and >76, respectively. In this study, the effect of egg shape on the mechanical behaviour of chicken eggs under a compression load was investigated. The resistance of chicken eggs (Lohmann) to damage was determined by measuring the average rupture force, specific deformation, rupture energy and firmness along the X-front (Xf), X-back (Xb) and Z-axes at different compression speeds (0.33, 0.66 and 0.99 mm/s). The greatest amount of force required to break the eggs was required when eggs were loaded along the Xf-axis and the least compression force was required along the Z-axis. The specific deformation and rupture energy required for the eggs tested was lower along the Xf-axis than the Xb- or Z-axes. The highest measure of firmness in the eggs tested was found to be along their Xf-axis. The results indicated that when testing the effects of compression speed the rupture force is highly dependent on SI. The greatest force needed to rupture eggs was found in eggs with high SI values that were tested at low compression speeds. © 2007 Elsevier Ltd. All rights reserved.
Anahtar Kelimeler
Chicken egg | Compression axes and speed | Egg shape index | Mechanical properties