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[Display omitted] • Importance of non-conventional edible plants in food security. • Identification of carotenoids, vitamins, and minerals in non-conventional plants. • A. spinosus leaves were shown to be sources of minerals, fibers, and β-carotene. • C. benghalensis were shown to be sources of minerals, ascorbic acid, and β-carotene. Caruru (Amaranthus spinosus L) and trapoeraba (Commelina benghalensis) are NCEPs introduced into Brazil and are widely used by certain communities. Given the lack of information on carotenoids, vitamins, and minerals present in A. spinosus and C. benghalensis grown in Brazil, this study aimed to determine the proximate composition and the micronutrient profile of these two NCEPs obtained from family farming in the Middle Doce River (Médio Rio Doce) region in the state of Minas Gerais, Brazil. The proximate composition was evaluated using AOAC methods, vitamin E by HPLC with fluorescence detection, vitamin C and carotenoids by HPLC-DAD, and minerals by atomic emission spectrometry with inductively coupled plasma. In summary, the leaves of A. spinosus exhibited a high content of dietary fiber (10.20 g.100 g−1), potassium (708.8 mg·100 g−1), iron (4.0 mg·100 g−1) and β-carotene (6.94 mg·100 g−1), while the leaves of C. benghalensis were sources of potassium (1399.31 mg·100 g−1), iron (5.7 mg·100 g−1), calcium (163 mg·100 g−1), zinc (1.3 mg·100 g−1), ascorbic acid (23.61 mg·100 g−1), and β-carotene (31.33 mg·100 g−1). It was therefore concluded that C. benghalensis and A. spinosus , especially, presented excellent potential as important nutritional sources for human consumption, highlighting the gap existing between the available technical and scientific material, thus making them an important and necessary axis of research. [ABSTRACT FROM AUTHOR]

Abstract: The physical characteristics (diameters, height and mass), chemical composition (tritratable acidity, soluble solids, pH, moisture, ash, protein, lipids and total dietary fiber), occurrence and content of vitamin C (ascorbic acid and dehydroascorbic acid), carotenoids (α-carotene, β-carotene, β-cryptoxanthin and lycopene), vitamin E (α-, β-, γ- and δ-tocopherol and tocotrienol) and folates (tetrahydrofolate, 5-methyltetrahydrofolate and 5-formyltetrahydrofolate) were evaluated in the cagaita obtained from the Cerrado of Minas Gerais, Brazil. The analyses of vitamin C and carotenoids were performed by HPLC-DAD and vitamin E and folates by HPLC with fluorescence detection. The cagaita pulp presented high content of moisture (91.56g100g−1), vitamin C (34.11mg100g−1) and folates (25.74μg100g−1). The presence of protein (0.63g100g−1), ash (0.18g100g−1), lipids (0.57g100g−1), carbohydrates (5.54g100g−1), dietary fiber (1.54g100g−1) and carotenoids (0.77mg100g−1) was observed in its composition. Vitamin E isomers were not detected. Consumption of cagaita (100g) contributed significantly to supply the daily requirements of vitamin C (on average 71.0%), vitamin A (on average 7.5%) and folates (on average 7.9%). The cagaita showed high pulp yield, reduced total energy value and was considered a source of vitamin C, which play important role in human health. [Copyright &y& Elsevier]