Influence of a modified fatty acid profile of egg yolk fat on technological properties of hen's eggs

✍ Scribed by Brettschneider, Jörg G. ;Jeroch, Heinz ;Dänicke, Sven ;Pikul, Jan

• Publisher: John Wiley and Sons
• Year: 1997
• Weight: 325 KB
• Volume: 99
• Category: Article
• ISSN: 0931-5985
• DOI: 10.1002/lipi.19970991005

✦ Synopsis

A feeding experiment with brown layers was carried out to find effects of graded levels of rapeseed (without, 15% and 30%) in layer diets on the fatty acid composition of egg yolk and related functional properties of such modified eggs. A considerable increase of the content of essential n-3 fatty acids in egg yolk fat was noticed by including graded levels of rapeseed in layer diets. The destruction force of a gel prepared from whole egg was improved by the highest rapeseed level (30%) and emulsifying capacity by medium inclusion of rapeseed in layer diets (15%). The thermal stability of an emulsion prepared from whole egg was not influenced by rape feeding. Viscosity of mayonnaise prepared from egg yolk and whole egg yolk was decreased by increased rapeseed levels in the diets. In tendency, organoleptic evaluation of sponge cake prepared from whole egg revealed better results for the control group. The baking height of sponge cake was improved by rapeseed inclusion in layer diets. It may be assumed that all these changes caused by rapeseed feeding are closely related to the mentioned changes in the fatty acid profile.