This study analysed the contents of thirty-six mineral and trace elements in teff (Eragrostis tef L.) grains. What is more, dietary intakes were calculated. Inductively coupled plasma mass spectrometry (ICP-MS) was used to assess mineral and trace element contents. Consequently, the appropriate Recommended Dietary Allowance (RDA) or adequate intake (AI), and provisional tolerable weekly intake (PTWI) or provisional tolerable monthly intake (PTMI) values for adults were determined according to the Food and Agriculture Organization/World Health Organization (FAO/WHO) and Institute of Medicine (IOM) regulations. Teff is a significant contributor to RDAs and AIs for females in the following order: Mn > Cu > Zn ≥ Mg > Fe ≥ P and Ca. For males, teff contributes in the order, Mn > Cu > Fe > Zn ≥ P ≥ Mg > and Ca. The concentration of arsenic (65.9 µg/kg) in brown teff originating in Bolivia exceeded the average acceptable value set by Reg. No. 1881 of 6-50 µg/kg in cereals consumed in the EU. The PTWIs or PTMIs for Al, Cd, Sn and Hg were all under 7%, which is below the limits of toxic element intake related to the body weight of 65 kg for adult females and 80 kg for males, set by the FAO/WHO. Teff grains can be recommended as a valuable and safe source of minerals and trace elements.

Department of Environmental Protection Engineering Tomas Bata University in Zlín Náměstí T G Masaryka 5555 760 01 Zlín Czech Republic

Department of Food Analysis and Chemistry Tomas Bata University in Zlín Náměstí T G Masaryka 5555 760 01 Zlín Czech Republic

Language Centre Tomas Bata University in Zlín Štefánikova 5670 760 01 Zlín Czech Republic

See more in PubMed

Hager A.-S., Wolter A., Jacob F., Zannini E., Arendt E.K. Nutritional properties and ultra-structure of commercial gluten free flours from different botanical sources compared to wheat flours. J. Cereal Sci. 2012;56:239–247. doi: 10.1016/j.jcs.2012.06.005. DOI

Forsido S.F., Rupasinghe H.P.V., Astatkie T. Antioxidant capacity, total phenolics and nutritional content in selected Ethiopian staple food ingredients. Int. J. Food Sci. Nutr. 2013;64:915–920. doi: 10.3109/09637486.2013.806448. PubMed DOI

Arendt E.K., Zannini E. Cereals Grains for the Food and Beverages. 1st ed. Woodhead Publishing; Cambridge, UK: 2013. pp. 351–368.

Winch T. Growing Food: A Guide to Food Production. 2nd ed. Springer; Berlin, Germany: 2007. pp. 104–287.

Van Delden S.H., Vos J., Stomph T.-J., Brouwer G., Struic P.C. Photoperiodism in Eragrostis tef: Analysis of ontogeny and morphology in response to photoperiod. Eur. J. Agron. 2012;37:105–114. doi: 10.1016/j.eja.2011.11.001. DOI

Morgano M.A., Rabonato L.C., Milani R.F., Miyagusku L., Balian S.C. Assessment of trace elements in fishes of Japanese foods marketed in São Paulo (Brazil) Food Control. 2011;22:778–785. doi: 10.1016/j.foodcont.2010.11.016. DOI

Institute of Medicine . Dietary Reference Intakes for Calcium, Phosphorus, Magnesium, Vitamin D, and Fluoride. Food and Nutrition Board, National Academy of Sciences; The National Academy Press; Washington, DC, USA: 1997. PubMed

Institute of Medicine . Dietary Reference Intakes for Vitamin C, Vitamin E, Selenium, and Carotenoids. Food and Nutrition Board, National Academy of Sciences; The National Academy Press; Washington, DC, USA: 2000. PubMed

Institute of Medicine . Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc. Food and Nutrition Board, National Academy of Sciences; The National Academy Press; Washington, DC, USA: 2001. PubMed

Institute of Medicine . Dietary Reference Intakes for Water, Potassium, Sodium, Chloride, and Sulfate. Food and Nutrition Board, National Academy of Sciences; The National Academy Press; Washington, DC, USA: 2005.

Joint FAO/WHO Expert Committee on Food Additives . Evaluation of Certain Contaminants: Sixty-Fourth Report of the Joint FAO/WHO Expert Committee on Food Additives. WHO Press; Geneva, Switzerland: 2006. (WHO Technical Report Series No. 930).

Joint FAO/WHO Expert Committee on Food Additives . Evaluation of Certain Contaminants in Food: Seventy-Second Report of the Joint FAO/WHO Expert Committee on Food Additives. WHO Press; Geneva, Switzerland: 2011. (WHO Technical Report Series No. 959).

Joint FAO/WHO Expert Committee on Food Additives . Evaluation of Certain Food Additives and Contaminants. Seventy-Fourth Report of the Joint FAO/WHO Expert Committee on Food Additives. WHO Press; Geneva, Switzerland: 2011. (WHO Technical Report Series No. 966).

Joint FAO/WHO Expert Committee on Food Additives . Evaluation of Certain Food Additives and Contaminants: Seventy-Seventh Report of the Joint FAO/WHO Expert Committee on Food Additives. WHO Press; Geneva, Switzerland: 2013. (WHO Technical Report Series No. 983).

United States Department of Agricultural (USDA) National Nutrient Database for Standard Reference. USDA; Washington, DC, USA: 2014. [(accessed on 10 October 2017)]. Available online: https://ndb.nal.usda.gov/ndb/foods/show/6592?fg=&manu=&lfacet=&format=&count=&max=50&offset=&sort=default&order=asc&qlookup=teff&ds=&qt=&qp=&qa=&qn=&q=&ing=

Nardi E.P., Evangelista F.S., Tormen L., SaińtPierre T.D., Curtius A.J., de Souza S., Barbosa F., Jr. The use of inductively coupled plasma mass spectrometry (ICP-MS) for the determination of toxic and essential elements in different types of food samples. Food Chem. 2009;112:727–732. doi: 10.1016/j.foodchem.2008.06.010. DOI

Abebe Y., Bogale A., Hambidge K.M., Stoecker B.J., Bailey K., Gibson R.S. Phytate, zinc, iron and calcium content of selected raw and prepared foods consumed in rural Sidama, Southern Ethiopia, and implication for bioavailability. J. Food Compos. Anal. 2007;20:161–168. doi: 10.1016/j.jfca.2006.09.003. DOI

Antoine J.M.R., Hoo Fung L.A., Grant C.N., Dennis H.T., Lalor G.C. Dietary intake of minerals and trace elements in rice on the Jamaican market. J. Food Compos. Anal. 2012;26:111–121. doi: 10.1016/j.jfca.2012.01.003. DOI

Kabata-Pendias A. Trace Elements in Soils and Plants. 4th ed. CRC Press Taylor & Francis Group; New York, NY, USA: 2011. pp. 1–153.

Medeiros R.J., dos Santos L.M.G., Freire A.S., Santelli R.E., Braga A.M.C.B., Krauss T.M., Jacob S.C. Determination of inorganic trace elements in edible marine fish from Rio de Janeiro State, Brazil. Food Control. 2012;23:535–541. doi: 10.1016/j.foodcont.2011.08.027. DOI

Zhang H., Rui Y. Determining mineral elements in four kinds of grains from Beijing market by ICP-MS simultaneously. J. Saudi Chem. Soc. 2012;16:31–33. doi: 10.1016/j.jscs.2010.10.014. DOI

Orecchio S., Amorello D., Raso M., Barreca S., Lino C., Di Gaudio F. Determination of trace elements in gluten-free food for celiac people. Microchem. J. 2014;116:163–172. doi: 10.1016/j.microc.2014.04.011. DOI

Frisardi V., Solfrizzi V., Capurso C., Kehoe P.G., Imbimbo B.P., Santamato A., Dellegrazie F., Seripa D., Pilotto A., Capurso A., et al. Aluminium in the diet and Alzheimer’s disease: From current epidemiology to possible disease-modifying treatment. J. Alzheimers Dis. 2010;20:17–30. doi: 10.3233/JAD-2010-1340. PubMed DOI

Millour S., Noël L., Kadar A., Chekri R., Vastel C., Sirot V., Leblanc J.C., Guérin T. Pb, Hg, Cd, As, Sb and Al levels in foodstuffs from the 2nd French total diet study. Food Chem. 2011;126:1787–1799. doi: 10.1016/j.foodchem.2010.12.086. PubMed DOI

Commission Regulation (EC) No. 1881/2006. Setting Maximum Levels for Certain Contaminants in Foodstuffs. Reports on Tasks for Scientific Co-Operation, Task 3.2.11. Assessment of the Dietary Exposure to Arsenic, Cadmium, Lead and Mercury of the Population of the EU Member States, 2006. [(accessed on 5 November 2017)]; Available online: https://openlaws.com/detail/b61d36b4-4f02-4383-b65f-d0438b9ddd96/en/SINGLE.

Commission Regulation (EC) No. 629/2008 of 2 July 2008 Amending Regulation (EC) No. 1881/2006 Setting Maximum Levels for Certain Contaminants in Foodstuffs, 2008. [(accessed on 5 November 2017)]; Available online: https://www.fsai.ie/uploadedFiles/Commission_Regulation_EC_No_629_2008.pdf.

Millour S., Noël L., Chekri R., Vastel C., Kadar A., Sirot V., Leblanc J.-C., Guérin T. Strontium, silver, tin, iron, tellurium, gallium, germanium, barium and vanadium levels in foodstuffs from the Second French Total Diet Study. J. Food Compos. Anal. 2012;25:108–129. doi: 10.1016/j.jfca.2011.10.004. DOI

Shimbo S., Watanabe T., Nakatsuka H., Yaginuma-Sakurai K., Ikeda M. Dietary tin intake and association with canned food consumption in Japanese preschool children. Environ. Health Prev. Med. 2013;18:230–236. doi: 10.1007/s12199-012-0311-9. PubMed DOI PMC

Joint FAO/WHO Expert Committee on Food Additives . Evaluation of Certain Food Additives and Contaminants: Seventy-Third Report of the Joint FAO/WHO Expert Committee on Food Additives. WHO Press; Geneva, Switzerland: 2011. (WHO Technical Report Series No. 960).

Commission Regulation (EC) No. 420/2011 of 29 April 2011 Amending Regulation (EC) No 1881/2006 Setting Maximum Levels for Certain Contaminants in Foodstuffs. [(accessed on 5 November 2017)];2011 Available online: https://www.fsai.ie/uploadedFiles/Reg420_2011.pdf.

Gonzales-Weller D., Rubio C., Gutiérrez Á.J., González G.L., Caballero Mesa J.M., Gironés C.R., Ojeda A.B., Hardisson A. Dietary intake of barium, bismuth, chromium, lithium, and strontium in a Spanish population (Canary Islands, Spain) Food Chem. Toxicol. 2013;62:856–868. doi: 10.1016/j.fct.2013.10.026. PubMed DOI

Matos-Reyes M.N., Cervera M.L., Campos R.C., de la Guardia M. Total content of As, Sb, Se, Te and Bi in Spanish vegetables, cereals and pulses and estimation of the contribution of these foods to the Mediterranean daily intake of trace elements. Food Chem. 2010;122:188–194. doi: 10.1016/j.foodchem.2010.02.052. DOI

Nyarko B.J.B., Akaho E.H.K., Fletcher J.J., Chatt A. Neutron activation analysis for Dy, Hf, Rb, Sc and Se in some Ghanaian cereals and vegetables using short-lived nuclides and Compton suppression spectrometry. Appl. Radiat. Isot. 2008;66:1067–1072. doi: 10.1016/j.apradiso.2007.10.001. PubMed DOI

Noël L., Chekri R., Millour S., Vastel C., Kadar A., Sirot V., Leblanc J.-T., Guérin T. Li, Cr, Mn, Co, Ni, Cu, Zn, Se and Mo levels in foodstuffs from the Second French TDS. Food Chem. 2012;132:1502–1513. doi: 10.1016/j.foodchem.2011.12.009. PubMed DOI

Wang L., Zhou Q., Zhao B., Huang X. Toxic effect of heavy metal terbium ion on cell membrane in horseradish. Chemosphere. 2010;80:28–34. doi: 10.1016/j.chemosphere.2010.03.040. PubMed DOI

Xiao T., Guha J., Boyle D., Liu C.-Q., Chen J. Environmental concerns related to high thallium levels in soils and thallium uptake by plants in southwest Guizhou, China. Sci. Total. Environ. 2004;18:223–244. doi: 10.1016/S0048-9697(03)00448-0. PubMed DOI

Anke M., Seeber O., Müller R., Schäfer U., Zerull J. Uranium transfer in the food chain from soil to plants, animals and man. Chem. Erde Geochem. 2009;69:75–90. doi: 10.1016/j.chemer.2007.12.001. DOI

The Effect of Flake Production and In Vitro Digestion on Releasing Minerals and Trace Elements from Wheat Flakes: The Extended Study of Dietary Intakes for Individual Life Stage Groups