Scientific Opinion on the substantiation of health claims related to alpha linolenic acid (ALA) and brain and neurological development (ID 491), “molecule precursors regulating cell functions” (ID 492, 4671), maintenance of normal cardiac function (ID 509, 579), “nutrient tasks and interactions” (ID 576), maintenance of normal blood pressure (ID 575), and enhancement of mood (ID 578, 601, 3182) pursuant to Article 13(1) of Regulation (EC) No 1924/2006