Résumé
The lipid fraction of infant follow-on formulas is mainly composed by a mixture of oils mainly of vegetable origin with palm oil as the main source of saturated fatty acids and are enriched in long-chain polyunsaturated fatty acids to support the infant development. However, these oil blends are not optimal for nutritional needs of infants and are particularly sensitive to lipid oxidation. This study aimed to substitute palm oil with other sources of saturated fatty acids in order to ensure a more suitable nutritional profile for infant without impacting or improving stability against lipid oxidation. A panel of model IFF representative of marketed products was formulated depending on the lipid sources including refined or unrefined palm oil, coconut oil and dairy fat. After an accelerated storage to follow their oxidative stability, the results show that the inclusion of carotenoids and dairy lipids in the composition of the oil phase improved the stability against lipid oxidation and provides bioactive compounds that are involve in the infant development. This study has thus highlighted the importance of the balance between nutritional profile and oxidation stability.