Four landrace carrots (“Becaria”, “CRS”, “Gonzalez” and “Rodriguez”) and two marketable cultivars (Kuroda and Brasilia), raw and steamed, were characterised by the total content of β-carotene Ca, Mg and Zn, in vitro bioaccessibility and by colour and were evaluated to determine the effect of particle size in nutrient bioaccessibility. Steaming increased the content of β-carotene extracted from “CRS” and Brasilia (29% and 75%) and decreased the content of β-carotene extracted from “CRS” by 23% in “Rodriguez.” In addition, steaming caused a loss of Ca (21%) but did not change the amount of Mg and Zn. The bioaccessibility of β-carotene in raw and pulped carrots was very low (