Knowledge Tree
iron
Facts (34)
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Nutritional potential of underutilized edible plant species in coffee ... link.springer.com Apr 23, 2021 13 facts
claimLeafy vegetables including Amaranthus graecizans, Portulaca oleracea, and Solanum nigrum are good sources of protein and minerals, specifically calcium (Ca), iron (Fe), and zinc (Zn).
referenceA 2018 assessment by Jemal of Yayu rural householders’ diets found that iron is the most critical nutrient deficiency, particularly for women of reproductive age and children under five, with the situation worsening during food scarcity seasons.
procedureThe nutritional potential of underutilized plant species was compared against commonly cultivated crops using calcium (Ca), iron (Fe), zinc (Zn), and calorific value as proxies.
referenceUddin et al. (2012) reported that mature leaves of Portulaca oleracea contain high amounts of calcium, iron, and zinc. Wenzel et al. (1990) further identified that Portulaca oleracea shoots are abundant in omega-3 fatty acid, α-tocopherol, ascorbic acid, β-carotene, and glutathione, making the plant a source of minerals, vitamins, and antioxidants for functional foods and nutraceutical applications.
claimDiets in rural Ethiopia are often deficient in protein and micronutrients such as iron (Fe), calcium (Ca), and vitamin A, according to Sheehy et al. (2019) and Baye et al. (2019).
measurementThe highest iron content among the studied species was found in Amaranthus graecizans (91.29 mg/100 g dry edible portion), followed by Dioscorea cayenensis (46.78 mg/100 g dry edible portion) and Portulaca oleracea (44.51 mg/100 g dry edible portion).
claimThe consumption of Amaranthus graecizans, Dioscorea cayenensis, and Portulaca oleracea could address iron deficiency in the Yayu region, where 96.4% of women of productive age lack sufficient iron in their diets during the shortage season, according to Jemal (2018).
claimAmaranthus viridis and Hibiscus sabdariffa are important providers of protein, fatty acids, iron, magnesium, calcium, and zinc.
claimAscorbic acid contributes to the absorption of iron, which is relevant for the benefits of iron-rich green vegetables and fruits in preventing anaemia.
claimAmaranthus graecizans, Portulaca oleracea, and Dioscorea cayenensis are identified as notable sources of calcium, iron, and zinc, while the fruit Rubus apetalus is a notable source of provitamin A.
claimCalcium and phytates determine the bioavailability and absorption of iron.
claimPortulaca oleracea is considered a weed in Ethiopia, but its leaves and stems contain high amounts of iron, zinc, and vitamin C, including twice the amount of iron found in maize.
measurementLaboratory analysis of 12 underutilized edible plant species from southwestern Ethiopia showed that all species, excluding fruits, contain higher levels of calcium, iron, and zinc compared to regularly cultivated crops.
Investigation of nutritional and phytochemical properties of wild ... nature.com Dec 9, 2025 6 facts
measurementIron content in sampled plants was highest in Tinospora cordifolia (Willd.) Hook.f. & Thomson (537.66 ± 10.26) and lowest in Aegle marmelos (L.) Correa (164.00 ± 17.05).
claimPlants serve as sources of essential minerals including calcium, iron, magnesium, and zinc, which are crucial for maintaining human health.
procedurePhosphorus in a plant digest is analyzed using the Canada-molybdate yellow color method, Potassium and Calcium are analyzed using a flame photometer, Sulfur is evaluated using a turbidimetric process, and Sodium, Zinc, Copper, Iron, and Manganese are determined using atomic absorption spectrophotometry.
measurementRybicka and Gliszczyńska-Świgło analyzed the content of calcium, potassium, magnesium, sodium, copper, iron, manganese, and zinc in grain gluten-free products in a 2017 study.
procedureMineral analysis of medicinal plants determines the presence of essential elements including sodium (Na), potassium (K), calcium (Ca), magnesium (Mg), iron (Fe), zinc (Zn), copper (Cu), and manganese (Mn).
claimEssential minerals such as calcium, magnesium, potassium, and iron are present in the studied medicinal plants and contribute to promoting overall health and vitality.
The role of light in regulating plant growth, development and sugar ... frontiersin.org Jan 6, 2025 6 facts
measurementBrassica plants grown under a red-to-blue light ratio of 4:1 show accumulation of iron (Fe), zinc (Zn), copper (Cu), and manganese (Mn).
measurementOnion plants grown under a blue-to-white light ratio of 1:3 show accumulation of calcium (Ca), magnesium (Mg), sodium (Na), iron (Fe), manganese (Mn), zinc (Zn), and boron (B).
measurementBroccoli plants grown under orange light show accumulation of iron (Fe), magnesium (Mg), and calcium (Ca).
measurementBasil plants grown under a red-to-blue light ratio of 3:1 show accumulation of nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), and iron (Fe).
measurementLettuce plants grown under red light show accumulation of potassium (K), iron (Fe), zinc (Zn), copper (Cu), and manganese (Mn).
measurementMustard plants grown under a blue-to-red light ratio of 1:1 show accumulation of phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), sulfur (S), manganese (Mn), iron (Fe), zinc (Zn), copper (Cu), and boron (B).
Vernonia amygdalina: a comprehensive review of the ... frontiersin.org 3 facts
measurementDried Vernonia amygdalina leaves have higher calcium and iron content, while fresh leaves have higher magnesium, copper, and lead content.
claimVernonia amygdalina seeds contain vitamin C, vitamins B1 and B2, sodium, potassium, calcium, magnesium, iron, zinc, and manganese.
claimTraditional processing methods for bitter leaf (Vernonia amygdalina), including boiling, squeeze washing, and salting, result in the loss of proximate nutrients, calcium, iron, potassium, and vitamin C.
Assessment of the nutritional value of a wild edible plant Scorzonera ... discovery.researcher.life Dec 1, 2025 2 facts
claimWild edible plants serve as sources of carbohydrates, proteins, and fibers, and are rich in vitamins and minerals including vitamin A, vitamin C, zinc, iron, calcium, iodine, thiamine, riboflavin, niacin, and folate.
measurementMineral analysis of Bellevalia forniculata, Beta corolliflora, Caltha polypetala, and Primula auriculata showed high amounts of potassium (892.93–2,663.63 mg/100 g), phosphorus (239.57–636.77 mg/100 g), calcium (279.90–341.33 mg/100 g), magnesium (103.43–363.27 mg/100 g), iron (11.06–37.13 mg/100 g), manganese (1.56–5.39 mg/100 g), and zinc (2.28–3.36 mg/100 g).
A critical review of industrial fiber hemp anatomy, agronomic ... bioresources.cnr.ncsu.edu 1 fact
measurementIndustrial hemp plants have deep roots measuring 45 to 90 cm in length, which facilitate the phytoremediation of heavy metals such as chromium, iron, and cadmium from the soil.
Medicinal plants and human health: a comprehensive review of ... link.springer.com Nov 5, 2025 1 fact
claimAnthocyanins bind transition metals such as iron and copper, inhibiting hydroxyl radical production mediated by the Fenton process and safeguarding biological components against oxidative changes.
Ethnobotanical study of wild edible plants in Shabelle Zone, Eastern ... link.springer.com Feb 5, 2026 1 fact
claimThe leafy plant species Moringa stenopetala and Amaranthus dubius are rich in vitamins A and C, iron, and other nutrients crucial for child growth and maternal health.
Pharmacological Uses of New Bioactive Compounds from Medicinal ... academia.edu 1 fact
referencePyne and Santra (2017) documented the accumulation of arsenic, copper, and iron in common medicinal plants found in the Murshidabad district of West Bengal, India, published in the International Journal of Experimental Research and Review.