TY - JOUR AU - Conejo-López, Valery AU - Barboza-Barquero, Luis AU - Azofeifa-Delgado, Álvaro AU - Vargas-Ramírez, Ester AU - Irías-Mata, Andrea PY - 2022/09/27 Y2 - 2024/03/28 TI - Vitamin E profile in rice (Oryza sativa L.) seeds grown and commercialized in Costa Rica JF - Agronomía Mesoamericana JA - Agron. Mesoam. VL - 33 IS - Especial SE - Articles DO - 10.15517/am.v33iEspecial.51283 UR - https://revistas.ucr.ac.cr/index.php/agromeso/article/view/51283 SP - 51283 AB - <p><strong><span class="CharOverride-2">Introduction.&nbsp;</span></strong>Rice (<em><span class="CharOverride-5">Oryza sativa</span></em>&nbsp;L.) is one of the most consumed cereals worldwide, the indica and japonica subspecies are the most cultivated. The vitamin E present in rice has a high antioxidant activity that contributes to extend the longevity of its seeds. Its quantification allows to know the nutritional contribution of this vitamin.&nbsp;<span class="CharOverride-2"><strong>Objective.</strong>&nbsp;</span>To analyze the vitamin E profile in seeds of indica (registered commercial, aromatic, promising in development) and japonica subspecies of rice (<span class="CharOverride-5"><em>O. sativa</em>&nbsp;</span>L.), consumed in Costa Rica.&nbsp;<span class="CharOverride-2"><strong>Materials and methods.</strong>&nbsp;</span>Twenty-seven materials grown in the Chorotega and Brunca regions of Costa Rica, harvested in 2020 were analyzed. Vitamin E was quantified by ultra-high performance liquid chromatography coupled to triple quadrupole mass detection with chemical ionization source at atmospheric pressure at the Centro para Investigaciones en Granos y Semillas (CIGRAS), Universidad de Costa Rica, in 2021.&nbsp;<strong><span class="CharOverride-2">Results.</span>&nbsp;</strong>In the vitamin E profile, a characteristic clustering was obtained for the japonica samples, which was opposite to that presented by the indica samples. The majority compounds were γ-tocotrienol, α-tocopherol, and γ-tocopherol, the range of total vitamin E concentration was 5.50 to 33.20 μg g<sup><span class="CharOverride-4">-1</span></sup>, where the japonica subspecies reported the lowest amount (6.30 – 8.80 μg g<span class="CharOverride-4">-1</span>), while the Nayuribe sample, belonging to the registered commercial indica subspecies, obtained the highest concentration (33.20 ± 7.40 μg g<sup><span class="CharOverride-4">-1</span></sup>).&nbsp;<span class="CharOverride-2"><strong>Conclusion.</strong>&nbsp;</span>Although the analyzed subvarieties are phylogenetically from the same species, the significant differences found in the nutritional intake of vitamin E may be due to intrinsic characteristics of each subspecies. The significantly high vitamin E content in the Nayuribe sample showed that it is possible to find stocks for a high vitamin E content among the varieties analyzed.</p> ER -