RESUMO Plantas de mostarda silvestre (Sinapis arvensis), Brassicaceae, é uma hortaliça silvestre encontrada em área de florestas, pomares caseiros e consumida por populações rurais. O objetivo do presente estudo foi investigar a composição química (umidade, fibra alimentar total, lipídios, proteínas, cinzas, carboidratos e o valor energético total), a concentração de carotenoides, vitaminas (C e E), minerais (K, Ca, Mg, Cu, Fe, Zn, Mn, Na, Cr, Se e Mo) e a contribuição desta hortaliça para as recomendações da ingestão diária de nutrientes para indivíduos adultos. Destacaram-se concentrações de provitamina A (252,21 RAE /100 g), Se (0,04 mg/100 g) e Fe (5,91 mg/100 g), sendo a hortaliça considerada excelente fonte desses nutrientes. Ainda, a mostarda silvestre foi considerada boa fonte de K (435,65 mg/100 g), Ca (123,25 mg/100 g) e Mn (0,40 mg/100 g) e fonte de Fibra Alimentar Total (FAT) (3,20 mg/100 g), Mg (26,82 mg/100 g) e Cu (0,07 mg/100 g). Em conclusão, a mostarda silvestre destacou-se como fonte, boa fonte ou excelente fonte dos nutrientes avaliados, e pode contribuir para diminuir a carência nutricional destes nutrientes nas populações residentes na região de ocorrência desta hortaliça.

ABSTRACT Wild mustard plant (Sinapis arvensis), Brassicaceae, is a wild vegetable found in forest area, domestic orchards and it is consumed by rural population. This study aimed to evaluate chemical composition (moisture, total dietary fiber, lipids, proteins, ash, carbohydrates and total energetic value), concentration of carotenoids, vitamins (C and E) and minerals (K, Ca, Mg, Cu, Fe, Zn, Mn, Na, Cr, Se and Mo) and the contribution by this vegetable to the recommendations of daily consumption of nutrients for adult individuals. Concentrations of provitamin A (252.21 RAE/100 g), Se (0.04 mg/100 g) and Fe (5.91 mg/100 g) stood out, in which this vegetable was considered as an excellent source for these nutrients. In addition, wild mustard was considered a good source of K (435.65 mg/100 g), Ca (123.25 mg/100 g) and Mn (0.40 mg/100 g) and source of Total Dietary Fiber (TDF) (3.20 mg/100 g), Mg (26.82 mg/100 g) and Cu (0.07 mg/100 g). Wild mustard stood out as source, good source or excellent source of the evaluated nutrients, and they may contribute to reduce nutritional deficiency of those nutrients in the populations living in the region where this vegetable occurs.

El presente estudio tuvo como objetivo determinar los efectos de los diferentes métodos de cocción tradicionales sobre la retención de folatos (tetrahidrofolato - THF, 5-metiltetrahidrofolato - 5- MTHF y 5-formiltetrahidrofolato - 5 FTHF) en hortalizas. El análisis de folatos se llevó a cabo por cromatografía líquida de alta resolución (CLAR), con detección por fluorescencia, usando elución en gradiente, fase móvil de acetonitrilo y solución tampón de fosfato. La retención de los isómeros en las hortalizas después de la cocción varió de 17,0% a 87,2% para THF, 53,4 a 94,1% para 5-MTHF y de 39,0 a 107,9% para 5- FTHF. La retención de folatos dependió de la matriz del alimento, el tipo de isómero, y los métodos de cocción utilizados. Se recomienda que uno debe tener más control sobre las opciones de métodos y tiempo de cocción y la cantidad de agua utilizada en el hogar y también en los servicio de alimentación.

The present study aimed to determine the effects of different traditional cooking methods on folate (tetrahydrofolate - THF, 5-methyltetrahydrofolate - 5- MTHF and 5-formyltetrahydrofolate - 5-FTHF) retention in leafy vegetables. The analysis of folates was carried out by high performance liquid chromatography (HPLC), with detection by fluorescence, using gradient elution, mobile phase of acetonitrile and phosphate buffer solution. The retention of isomers in vegetables after cooking ranged from 17.0 % to 87.2 % for THF, 53.4 - 94.1% for 5-MTHF and 39.0 - 107.9% for 5-FTHF. The retention of folates depended on the food matrix, the kind of isomer, and the cooking methods used. It is recommended that one should have more control over the choices for methods and time of cooking and the amount of water used at home and at foodservice as well.