Food Science and Technology (Campinas)
On-line version ISSN 1678-457X
COSTA, Sara Macías de et al. Characterization of fresh Beta vulgaris from Santiago del Estero (Argentina). Nutrient and caroteniod content of stem and leaves. Ciênc. Tecnol. Aliment. [online]. 2003, vol.23, n.1, pp. 33-37. ISSN 1678-457X. http://dx.doi.org/10.1590/S0101-20612003000100008.
An integrated characterization study of Swiss chard grown in Santiago del Estero, Argentina, was carried out. As Swiss chard is a vegetable of important regional consumption, the determination of its basic constituents, minerals and pigments was done to appraise the nutritional value offered by this food in our area. Moisture, ash content, proteins, fats, available carbohydrates, total dietary fiber, chlorophylls and carotenoids were analysed, comparing the leaves and the stems. As to minerals, calcium, magnesium, sodium, manganese, zinc, iron, phosphorous, potassium, and boron were determined. Differences in the concentration of minerals, proteins, fats and fiber between the leaves and the stems were found, as well as the carotenoid content mainly in the leaves. These findings revealed important differences in energy content and provitamin A value, showing that the stem is a usable part of this vegetable to be recommended in diets with low calories.
Keywords : percent composition; minerals; carotenoids; provitamin A; swiss chard.