Provitamin A Carotenoids, Tocopherols, Ascorbic Acid and Minerals in Indigenous Leafy Vegetables from Tanzania.
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ID: 49465
2019
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Abstract
The essential micronutrients in indigenous leafy vegetables (ILVs) could substantially contribute to the micronutrient supply in rural communities in Tanzania, but concentrations differ between species. Provitamin A carotenoids, tocopherols, ascorbic acid, minerals, and phytate were analysed in 13 different species using HPLC-, ICP-OES, and photometric techniques. Eight of the 13 ILVs, including ssp. and , had high β-carotene concentrations (2.91⁻4.84 mg/100 g fresh weight), which could provide ≥50% of vitamin A's recommended nutrient intake (RNI). Six ILVs including and had high iron contents (34.5⁻60.4 mg/100 g, >50% RNI); ssp. represented the ILV with high calcium, magnesium and zinc contents (85%, 207% and 21% of RNI per 100 g); and had high ascorbic acid contents (>15 mg/100 g, 34⁻35% of RNI), while was the only ILV with a high tocopherol content (7.34 mg α-TE/100 g). The highest phytate concentration was found in ssp., which could negatively affect its role as a very good source of minerals. Results indicate that the analysed ILVs could make a substantial contribution to the vitamin A and iron supply in the diets of rural Tanzanian populations.
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gowele2019provitaminfoods
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| Authors | Gowele, Victoria Flavian;Kinabo, Joyce;Jumbe, Theresia;Kirschmann, Carolyn;Frank, Jan;Stuetz, Wolfgang; |
| Journal | Foods (Basel, Switzerland) |
| Year | 2019 |
| DOI |
E35
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| URL | |
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