Reivindicaciones

1. An oily mixture based on natural bioactive ingredients to be used in the preparation of an enriched food product, characterized in that it comprises a salmon oil enriched in EPA and DHA, alpha-tocopherol and a supercritical rosemary extract. 2. An oily mixture according to claim 1, characterized in that it comprises: - 70-99.9% of salmon oil enriched with 10 to 40% of EPA and DHA, - 0.001-1% of alpha-tocopherol, and - 0.1-5% of supercritical rosemary extract, where these correspond to percentages by weight with respect to the total weight of the oily mixture. 3. Oily mixture according to claim 2, characterized in that it comprises: - 80-97% of salmon oil enriched with 10 to 40% of EPA and DHA, - 0.001-0.1 % of alpha-tocopherol, and - 1-3% of supercritical rosemary extract, where these correspond to percentages by weight with respect to the total weight of the oily mixture. 4. Oily mixture according to claim 3, characterized in that it comprises: - 82% of salmon oil enriched with 10 to 40% of EPA and DHA, - 0.08% of alpha-tocopherol, and - 1.6% of supercritical rosemary extract, where these correspond to percentages by weight with respect to the total weight of the oily mixture. 5. Oily mixture according to any of claims 1 to 4, characterized in that it also comprises the microalga Dunaliella salina. 6. Oily mixture according to claim 5, characterized in that it comprises 0.1- 20%, preferably 3-18% and, even more preferably, 16% of microalga Dunaliella salina, where these correspond to percentages by weight with respect to the total weight of the oily mixture. 7. A food product enriched with an oily mixture based on natural bioactive ingredients that comprises salmon oil enriched with EPA and DHA, alpha- tocopherol and supercritical rosemary extract. 8. Food product enriched according to claim 7, characterized in that the oily mixture based on natural bioactive ingredients also comprises the microalga Dunaliella salina. 9. Food product enriched according to any of claims 7 to 8, characterized in that it comprises: - 0.1-20% of salmon oil enriched with 10 to 40% of EPA and DHA - 0.00001-1% of alpha-tocopherol, - 0.001-5% of supercritical rosemary extract and, optionally, - 0.01-5% of the microalga Dunaliella salina, where these correspond to percentages by weight with respect to the total weight of the oily mixture. 10. Food product enriched according to claim 9, characterized in that it comprises: - 1-10% of salmon oil enriched with 10 to 40% of EPA and DHA - 0.001-0.5% of alpha-tocopherol, - 0.01-3% of supercritical rosemary extract and, optionally, - 0.1-3% of the microalga Dunaliella salina, where these correspond to percentages by weight with respect to the total weight of the food product. 11. Food product enriched according to claim 10, characterized in that it comprises: - 5% of salmon oil enriched with 10 to 40% of EPA and DHA - 0.005% of alpha-tocopherol, - 0.1 % of supercritical rosemary extract and, optionally, - 1% of the microalga Dunaliella salina, where these correspond to percentages by weight with respect to the total weight of the food product. 12. Food product according to any of claims 7 to 11, characterized in that it presents a polyunsaturated fatty acid contents with a ratio of .omega.- 6/.omega.-3 polyunsaturated fatty acids lower than 5. 13. Food product enriched according to claim 12, characterized in that it is a meat product. 14. Food product enriched according to claim 13, characterized in that the meat product is selected from the group consisting of frankfurter sausages, cooked ham, cooked turkey breast, cured chorizo, cured salchichon, cured pork loin and cured ham. 15. A method to prepare a food product enriched according to any of claims 7-14, characterized in that it comprises the steps of: a) preparing an oily mixture based on natural bioactive ingredients by mixing these natural bioactive ingredients and, b) incorporating the oily mixture prepared in a) to the food product to be enriched. 16. Method according to claim 15, characterized in that the natural bioactive ingredients are combined in a proportion of: - 70-99.9% of salmon oil enriched with 10 to 40% of EPA and DHA, - 0.001-1% of alpha-tocopherol, - 0.1-5% of supercritical rosemary extract and, optionally, - 0.1-20% of the microalga Dunaliella salina, where these correspond to percentages by weight with respect to the total weight of the oily mixture. 17. Method according to claim 16, characterized in that the natural bioactive ingredients are combined in a proportion of: - 80-97% of salmon oil enriched with 10 to 40% of EPA and DHA, - 0.001-0.1% of alpha-tocopherol, - 1-3% of supercritical rosemary extract and, optionally, - 3-18% of the microalga Dunaliella salina, where these correspond to percentages by weight with respect to the total weight of the oily mixture. 18. Method according to claim 17, characterized in that the natural bioactive ingredients are mixed in a proportion of: - 82% of salmon oil enriched with 10 to 40% of EPA and DHA, - 0.08% of alpha-tocopherol, - 1.6% of supercritical rosemary extract and, optionally, - 16% of the microalga Dunaliella salina, where these correspond to percentages by weight with respect to the total weight of the oily mixture.