Lipid oxidation is generally favoured by thermal processing and long-term storage. Oxidised lipids can
alter nutritional and sensorial properties of foods. As eggs are widely used in food industries in dried
powder form, our aim was to determine whether compositional or processing parameters have an impact
on lipid oxidation from the shell eggs up to the dried powders and subsequent storage. Two batches of
shell eggs were processed: one issued from hens fed with a standard diet and another receiving a diet
enriched in extruded linseed, rich in linolenic acid. The extent of lipid oxidation was evaluated by quantification
of conjugated dienes (CD) and malondialdehyde (MDA), but also by assessment of tocopherols,
lutein and zeaxanthin losses. Results highlighted the remarkable oxidative stability of control and
enriched yolk powders as revealed by a moderate increase of the quantities of CD and MDA, the lack
of oxidised cholesterol and small loss of a-tocopherol.