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Onaji MO, Ibrahim U, Chia MA. Metals in vegetables from markets in Zaria, Nigeria and risk assessment. FOOD ADDITIVES & CONTAMINANTS. PART B, SURVEILLANCE 2024:1-11. [PMID: 38616549 DOI: 10.1080/19393210.2024.2339310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 04/02/2024] [Indexed: 04/16/2024]
Abstract
This study, investigated the concentrations of cadmium, lead and arsenic in vegetables grown with irrigation and sold in Sabon gari and Samaru markets in Zaria, Nigeria. Cadmium was absent in amaranthus, pepper and tomatoes purchased from Samaru market. Nevertheless, amaranthus and lettuce had higher concentrations of these toxic metals than pepper. Total arsenic concentrations in the investigated vegetables were higher than the maximum levels set by the World Health Organization. Total daily intake of the metals was higher than the maximum levels for consuming vegetables from these markets. Therefore, individuals who consume these foods may be at risk. These results indicate the possibility of toxic metal contamination in vegetables purchased from Zaria markets.
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Affiliation(s)
| | - Umar Ibrahim
- Department of Botany, Ahmadu Bello University, Zaria, Nigeria
| | - Mathias Ahii Chia
- Department of Botany, Ahmadu Bello University, Zaria, Nigeria
- Department of Ecology, University of Brasilia, Brasilia, Brazil
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2
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Rubio C, Gutiérrez ÁJ, Hardisson A, Martín V, Revert C, Pestana Fernandes PJ, Horta Lopes DJ, Paz-Montelongo S. Dietary Exposure to Toxic Metals (Cd, Pb and Hg) from Cereals Marketed in Madeira and the Azores. Biol Trace Elem Res 2023; 201:5861-5870. [PMID: 36943550 PMCID: PMC10620312 DOI: 10.1007/s12011-023-03643-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 03/17/2023] [Indexed: 03/23/2023]
Abstract
Cereals and cereal-based foods continue to be basic foods in all diets. Despite being known for their high nutritional value; they can also contain contaminants (hazards) such as toxic metals. This study assesses the Cd, Pb and Hg dietary exposure from cereals and derivatives marketed in Madeira and the Azores and characterizes the risks by evaluating the Cd and Hg intake contributions to the tolerable intakes and by estimating the Margin of Exposure (MOE) in the case of Pb. In Madeira, metals follow the descending order of Cd > Pb > Hg. Cd stands out as having the highest levels (0.307 mg Cd/kg in oats; 0.237 mg/kg in rye). High levels of Pb (0.347 mg/kg) were also detected in rye. Regarding total mercury, rice stands out (0.0013 mg/kg) followed by wheat (0.001 mg/kg). While all cereals and derivatives except maize consumed in Madeira exceed the maximum value of Cd allowed by the EU, 50.0% of the rye and 25.0% of the corn flour samples exceeded the European Pb limit. The daily consumption of 100 g of oats, rye flour and rye represent high contributions to the TWI of Cd (93.2 - 120%). The MOE values of Pb from the consumption of rye (100 g/day) are 1,294 (nephrotoxic effects) and 3,082 (cardiotoxic effects). In the Azores, corn flour (0.72 mg Pb/kg) stands out with 85.7% of the samples exceeding the maximum Pb EU limit and MOE values of 626 (nephrotoxic effects) and 1,490 (cardiotoxic effects). Regular daily consumption of corn flour makes a low (< 10%) contribution to the Cd TDI. In conclusion, the Pb exposure from the consumption of cereals and derivatives could have toxic effects such as nephrotoxicity or cardiotoxicity in adults. The results highlight the need to set up monitoring and surveillance programs for the safety of cereals and their derivatives in Madeira and the Azores in terms of lead and cadmium.
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Affiliation(s)
- Carmen Rubio
- Grupo de Investigación en Toxicología Alimentaria Y Ambiental, Universidad de La Laguna, La Laguna, 38071, Tenerife, Islas Canarias, Spain
| | - Ángel J Gutiérrez
- Grupo de Investigación en Toxicología Alimentaria Y Ambiental, Universidad de La Laguna, La Laguna, 38071, Tenerife, Islas Canarias, Spain
| | - Arturo Hardisson
- Grupo de Investigación en Toxicología Alimentaria Y Ambiental, Universidad de La Laguna, La Laguna, 38071, Tenerife, Islas Canarias, Spain
| | - Verónica Martín
- Laboratorio de Salud Pública de Las Palmas, Servicio Canario de Salud, 35004, Las Palmas de Gran Canaria, Spain
| | - Consuelo Revert
- Departamento de Medicina Física Y Farmacología, Universidad de La Laguna, 38071, Tenerife, Islas Canarias, Spain
| | - Paulo Jorge Pestana Fernandes
- Divisão de Análises de Resíduos E Contaminantes. Secretaria Regional de Agricultura E Desenvolvimento Rural. Direção Regional de Agricultura E Desenvolvimento Rural. Direção de Serviços Dos Laboratórios Agrícolas E Agroalimentares, Laboratório Regional de Veterinária E SegurançaAlimentar. Caminho das Quebradas de Baixo, N.º 79 - 9000-254, Funchal, Madeira, Portugal
| | - David João Horta Lopes
- Ce3C - Centre for Ecology, Evolution and Environmental Changes, Azorean Biodiversity Group, Faculty of Agricultural Sciences and Environment, University of the Azores, Ponta Delgada, Portugal
| | - Soraya Paz-Montelongo
- Grupo de Investigación en Toxicología Alimentaria Y Ambiental, Universidad de La Laguna, La Laguna, 38071, Tenerife, Islas Canarias, Spain.
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3
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González-Weller D, Paz-Montelongo S, Bethencourt-Barbuzano E, Niebla-Canelo D, Alejandro-Vega S, Gutiérrez ÁJ, Hardisson A, Carrascosa C, Rubio C. Proteins and Minerals in Whey Protein Supplements. Foods 2023; 12:foods12112238. [PMID: 37297488 DOI: 10.3390/foods12112238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 05/22/2023] [Accepted: 05/30/2023] [Indexed: 06/12/2023] Open
Abstract
Sports nutrition supplementation is a widespread practice. Whey protein supplements contribute not only to protein intake but also to dietary exposure to minerals. The labelling present provides the percentage of protein and rarely refers to other components, such as potentially toxic elements such as B, Cu, Mo, Zn, and V that present tolerable upper intake levels set by the European Food Safety Authority. The percentage of protein declared on supplement labelling was checked using the Kjeldahl method, and the levels of Ca, Mg, K, Na, Ba, B, Co, Cu, Cr, Sr, Fe, Li, Mn, Mo, Ni, V, Zn, and Al were analyzed by ICP-OES with the aim of characterizing the protein and mineral contents of isolate and concentrate whey protein supplements representative of the European market. The protein content was 70.9% (18-92.3%) and statistically significant differences were observed between the declared and real protein percentages. Among the minerals, K (4689.10 mg/kg) and Ca (3811.27 mg/kg) presented the highest levels, whereas Co (0.07 mg/kg) and V (0.04 mg/kg) showed the lowest levels. It was concluded that the quality and safety of these products needs to be monitored and regulated. A high degree of non-compliance with labelling claims was detected. Furthermore, the contributions to the recommended and tolerable intakes among regular consumers need to be assessed.
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Affiliation(s)
- Dailos González-Weller
- Health Inspection and Laboratory Service, Servicio Canario de la Salud, 38006 Santa Cruz de Tenerife, Spain
- Toxicology Department, Universidad de La Laguna, 38071 La Laguna, Spain
| | | | | | | | | | - Ángel J Gutiérrez
- Toxicology Department, Universidad de La Laguna, 38071 La Laguna, Spain
| | - Arturo Hardisson
- Toxicology Department, Universidad de La Laguna, 38071 La Laguna, Spain
| | - Conrado Carrascosa
- Department of Animal Pathology and Production, Bromatology and Food Technology, Faculty of Veterinary, Universidad de Las Palmas de Gran Canaria, 35413 Arucas, Spain
| | - Carmen Rubio
- Toxicology Department, Universidad de La Laguna, 38071 La Laguna, Spain
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Akoury E, Mansour N, Reda GA, Dimassi H, Karam L, Alwan N, Hassan HF. Toxic metals in packed rice: Effects of size, type, origin, packing season, and storage duration. J Food Compost Anal 2023. [DOI: 10.1016/j.jfca.2022.104920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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Rubio-Armendáriz C, Gutiérrez ÁJ, Gomes-Furtado V, González-Weller D, Revert C, Hardisson A, Paz S. Essential Metals and Trace Elements in Cereals and Their Derivatives Commercialized and Consumed in Cape Verde. Biol Trace Elem Res 2023; 201:444-454. [PMID: 35226277 PMCID: PMC9823067 DOI: 10.1007/s12011-022-03158-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 02/10/2022] [Indexed: 01/11/2023]
Abstract
Cereals and their derivatives are basic foods in the human diet and a source of minerals, but the content of elements may vary depending on the type of cereal or its processing. The levels of Na, K, Ca, Mg, Fe, Cu, Zn, Mo, Co, and Mn have been determined in 126 samples of cereals and cereal derivatives (rice, corn gofio, corn flour, wheat flour, corn, and wheat) commercialized and consumed in Cape Verde using an inductively coupled plasma-optical emission spectrometer (ICP-OES) after a wet microwave digestion process. Some elements stand out in products such as corn gofio (K), wheat (Mg), and wheat flour (Fe). Negative correlations were found between Mo-Na and Na-Zn that could suggest interference between these elements. Bearing in mind the dietary intake evaluation and the guideline values provided by EFSA (European Food Safety Authority) or FAO (Food Authority Organization), the consumption of wheat (100 g/day) provides a notable contribution of Mo, Mn, Fe, and Mg. Considering the nutritional value of the analyzed essential and trace elements, the consumption of different cereals and their derivatives should be promoted.
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Affiliation(s)
- Carmen Rubio-Armendáriz
- Department of Toxicology, Universidad de La Laguna, La Laguna, Tenerife, Canary Islands, Spain.
| | - Ángel J Gutiérrez
- Department of Toxicology, Universidad de La Laguna, La Laguna, Tenerife, Canary Islands, Spain
| | - Verena Gomes-Furtado
- Independent Health Regulatory Authority, Av. Cidade de Lisboa, Praia, Cape Verde
| | - Dailos González-Weller
- Department of Toxicology, Universidad de La Laguna, La Laguna, Tenerife, Canary Islands, Spain
- Health Inspection and Laboratory Service, Canary Health Service, S/C de Tenerife, Tenerife, Canary Islands, Spain
| | - Consuelo Revert
- Department of Physical Medicine and Pharmacology, University of La Laguna, Tenerife, Canary Islands, Spain
| | - Arturo Hardisson
- Department of Toxicology, Universidad de La Laguna, La Laguna, Tenerife, Canary Islands, Spain
| | - Soraya Paz
- Department of Toxicology, Universidad de La Laguna, La Laguna, Tenerife, Canary Islands, Spain.
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Aguilera-Velázquez JR, Calleja A, Moreno I, Bautista J, Alonso E. Metallic profiles and health risk assessment of the most consumed rice varieties in Spain. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2022.105101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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7
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Nam NN, Do HDK, Trinh KTL, Lee NY. Recent Progress in Nanotechnology-Based Approaches for Food Monitoring. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12234116. [PMID: 36500739 PMCID: PMC9740597 DOI: 10.3390/nano12234116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/17/2022] [Accepted: 11/20/2022] [Indexed: 05/10/2023]
Abstract
Throughout the food supply chain, including production, storage, and distribution, food can be contaminated by harmful chemicals and microorganisms, resulting in a severe threat to human health. In recent years, the rapid advancement and development of nanotechnology proposed revolutionary solutions to solve several problems in scientific and industrial areas, including food monitoring. Nanotechnology can be incorporated into chemical and biological sensors to improve analytical performance, such as response time, sensitivity, selectivity, reliability, and accuracy. Based on the characteristics of the contaminants and the detection methods, nanotechnology can be applied in different ways in order to improve conventional techniques. Nanomaterials such as nanoparticles, nanorods, nanosheets, nanocomposites, nanotubes, and nanowires provide various functions for the immobilization and labeling of contaminants in electrochemical and optical detection. This review summarizes the recent advances in nanotechnology for detecting chemical and biological contaminations in the food supply chain.
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Affiliation(s)
- Nguyen Nhat Nam
- Biotechnology Center, School of Agriculture and Aquaculture, Tra Vinh University, Tra Vinh City 87000, Vietnam
| | - Hoang Dang Khoa Do
- NTT Hi-Tech Institute, Nguyen Tat Thanh University, Ward 13, District 04, Ho Chi Minh City 70000, Vietnam
| | - Kieu The Loan Trinh
- Department of Industrial Environmental Engineering, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si 13120, Gyeonggi-do, Republic of Korea
- Correspondence: (K.T.L.T.); (N.Y.L.)
| | - Nae Yoon Lee
- Department of BioNano Technology, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si 13120, Gyeonggi-do, Republic of Korea
- Correspondence: (K.T.L.T.); (N.Y.L.)
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Li D, Zhang C, Li X, Li F, Liao S, Zhao Y, Wang Z, Sun D, Zhang Q. Co-exposure of potentially toxic elements in wheat grains reveals a probabilistic health risk in Southwestern Guizhou, China. Front Nutr 2022; 9:934919. [PMID: 36003839 PMCID: PMC9393542 DOI: 10.3389/fnut.2022.934919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 07/15/2022] [Indexed: 11/13/2022] Open
Abstract
Bijie is located at a typical karst landform of Southwestern Guizhou, which presented high geological background values of potentially toxic elements (PTEs). Recently, whether PTE of wheat in Bijie is harmful to human health has aroused people's concern. To this end, the objectives of this study are to determine the concentrations of PTE [chromium (Cr), nickel (Ni), arsenic (As), lead (Pb), cadmium (Cd), and fluorine (F)] in wheat grains, identify contaminant sources, and evaluate the probabilistic risks to human beings. A total of 149 wheat grain samples collected from Bijie in Guizhou were determined using the inductively coupled plasma mass spectrometer (ICP-MS) and fluoride-ion electrode methods. The mean concentrations of Cr, Ni, As, Cd, Pb, and F were 3.250, 0.684, 0.055, 0.149, 0.039, and 4.539 mg/kg, respectively. All investigated PTEs met the standard limits established by the Food and Agriculture Organization except for Cr. For the source identification, Cr and Pb should be originated from industry activities, while Ni, As, and Cd might come from mixed sources, and F was possibly put down to the high geological background value. The non-carcinogenic and carcinogenic health risks were evaluated by the probabilistic approach (Monte Carlo simulation). The mean hazard quotient (HQ) values in the three populations were lower than the safety limit (1.0) with the exception of As (children: 1.03E+00). However, the mean hazard index (HI) values were all higher than 1.0 and followed the order: children (2.57E+00) > adult females (1.29E+00) > adult males (1.12E+00). In addition, the mean carcinogenic risk (CR) values for Cr, As, Pb, and Cd in three populations were all higher than 1E-06, which cannot be negligible. The mean threshold CR (TCR) values were decreased in the order of children (1.32E-02) > adult females (6.61E-03) > adult males (5.81E-03), respectively, all at unacceptable risk levels. Moreover, sensitivity analysis identified concentration factor (C W ) as the most crucial parameter that affects human health. These findings highlight that co-exposure of PTE in wheat grains revealed a probabilistic human health risk. Corresponding measures should be undertaken for controlling pollution sources and reducing the risks for the local populace.
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Affiliation(s)
- Dashuan Li
- Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, School of Public Health, Guizhou Medical University, Guiyang, China
| | - Cheng Zhang
- Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, School of Public Health, Guizhou Medical University, Guiyang, China
| | - Xiangxiang Li
- Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, School of Public Health, Guizhou Medical University, Guiyang, China
| | - Fuming Li
- Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, School of Public Health, Guizhou Medical University, Guiyang, China
| | - Shengmei Liao
- Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, School of Public Health, Guizhou Medical University, Guiyang, China
| | - Yifang Zhao
- Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, School of Public Health, Guizhou Medical University, Guiyang, China
| | - Zelan Wang
- Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, School of Public Health, Guizhou Medical University, Guiyang, China
| | - Dali Sun
- Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, School of Public Health, Guizhou Medical University, Guiyang, China
| | - Qinghai Zhang
- Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, School of Public Health, Guizhou Medical University, Guiyang, China
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Sources of Lead Exposure in West Africa. SCI 2022. [DOI: 10.3390/sci4030033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This commentary is an investigation of sources of lead (Pb) exposure in West Africa. Pb is generally acknowledged as one of the most widespread environmental health hazards in West Africa, and there is heightened concern over adverse health effects at various levels of exposure (at doses once considered safe) in the West African region. A literature review for the possible health implications of Pb exposure on human health showed nervous system dysfunction, anemia, and potential cognitive diseases as the major health issues among children, while adults were found to suffer more from cardiovascular dysfunction, neurological decline, and reproductive diseases. Despite a decline in blood lead levels (BLLs), lead exposure continues to be a major public health concern as no level of Pb exposure can be considered safe. Moreover, lowering BLLs entails identifying various lead sources such as gasoline emissions, leaded paint, canned foods, and beverages, as well as plausible biological pathways of lead exposure and response. However, only countries such as Nigeria and Ghana have extensive research available regarding the different sources of Pb exposure. Further, it is not apparent which country is affected the most by Pb exposure. Therefore, this commentary was aimed to explore different literature sources to describe and list the different sources of Pb exposure in 15 West African countries. The findings indicated water, food, and occupational exposure as the major sources of Pb exposure in the region. People with occupations such as e-waste and Pb acid battery recycling, auto mechanics, fuel attending, welding, electronic repairing, farming/spraying, and mining were found to be at immediate risk. Tobacco, spices and paints constituted additional potential sources of exposure. For residents living near landfills or urban area, the major sources of Pb exposure were soil, air, and dust particles. The review revealed a vast research gap on the sources and implications of Pb exposure. Exposure to Pb could further increase due to uncontrolled traffic, urban growth, inadequate urban planning, and the inadequate enforcement of regulations. Therefore, more extensive research on the changing trends of Pb exposure among West African populations is needed.
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Nutritional Quality of the Most Consumed Varieties of Raw and Cooked Rice in Spain Submitted to an In Vitro Digestion Model. Foods 2021; 10:foods10112584. [PMID: 34828863 PMCID: PMC8618410 DOI: 10.3390/foods10112584] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 10/20/2021] [Accepted: 10/21/2021] [Indexed: 12/25/2022] Open
Abstract
Rice is one of the most consumed staple foods around the world and its trade is highly globalized. Increased environmental pollution generates a large amount of waste that, in many cases, is discarded close to culture fields. Some species are able to bioaccumulate toxic substances, such as metals, that could be transferred to the food chain. The main goal of this study was to evaluate the content of metallic (Al, Cd, Pb, and Cr) and metalloid elements (As) in 14 of the most consumed varieties of rice in Spain and their effects on human health. The samples were cooked, and human digestion was simulated by using a standard in vitro digestion method. Metallic and metalloid element levels were analysed by Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES), previous called microwave digestion. Both the human health risk index, Hazard Quotient, and Lifetime Cancer Risk did not show toxic values in any case. Rice with a higher non-digestible fraction showed a higher liberation of proteins and a lower glycemic index. There were no significant differences in the concentrations of metallic and metalloid elements in cooked rice or in the digestible fraction in all varieties analysed. However, Al concentrations were higher than other metals in all varieties studied due to its global distribution. No relationship has been observed between the digestibility of rice and the bioaccessibility of each metallic and metalloid element. All of the studied rice varieties are healthy food products and its daily consumption is safe. The regular monitoring of metals and As in rice consumed in Spain may contribute to improvements in the human health risk evaluation.
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Food Safety, Security, Sustainability and Nutrition as Priority Objectives of the Food Sector. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18158073. [PMID: 34360366 PMCID: PMC8345497 DOI: 10.3390/ijerph18158073] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 07/26/2021] [Indexed: 11/16/2022]
Abstract
Food systems are at the center of global environmental, social, and economic challenges such as resource scarcity, ecosystem degradation, and climate change [...].
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Rubio-Armendáriz C, Paz S, Gutiérrez ÁJ, González-Weller D, Revert C, Hardisson A. Human Exposure to Toxic Metals (Al, Cd, Cr, Ni, Pb, Sr) from the Consumption of Cereals in Canary Islands. Foods 2021; 10:1158. [PMID: 34064037 PMCID: PMC8223989 DOI: 10.3390/foods10061158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/18/2021] [Accepted: 05/19/2021] [Indexed: 12/23/2022] Open
Abstract
The Canary Islands is an archipelago that consumes cereals and derivatives imported from other regions of the world. The increase in contamination with toxic metals makes it necessary to assess the content of toxicological metals of interest to ensure quality and safety. The content of toxic metals (Al, Cd, Cr, Pb, Ni, Sr) was determined in 221 samples of cereals and derivatives (corn, wheat, gofio, corn gofio, barley gofio, roasted corn and flour) marketed in the Canary Islands using ICP-OES (inductively coupled plasma optical emission spectrometry) to assess dietary exposure. Al content recorded in barley gofio (29.5 mg/kg fresh weight) stands out. The estimated daily intake (EDI) of Pb is 52 µg/day if 100 g/day of barley gofio is consumed (121% and 240% of the BMDL nephrotoxicity limit set by the EFSA at 0.63 µg/kg body weight/day for adults and children, respectively). The EDI of PB is 16 µg/day if 30 g barley gofio/day is consumed by adults (36.2% of the abovementioned BMDL nephrotoxicity limit). The EDI of Pb is 7.8 µg/day if 15 g barley gofio/day is consumed by children (32.2% of the abovementioned BMDL nephrotoxicity limit). Gofio is a food of high nutritional value. It is necessary to establish monitoring programs for toxic metals in raw materials and processed products to reduce exposure levels.
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Affiliation(s)
- Carmen Rubio-Armendáriz
- Department of Toxicology, Universidad de La Laguna, La Laguna, 38200 Tenerife, Canary Islands, Spain; (C.R.-A.); (S.P.); (D.G.-W.); (A.H.)
| | - Soraya Paz
- Department of Toxicology, Universidad de La Laguna, La Laguna, 38200 Tenerife, Canary Islands, Spain; (C.R.-A.); (S.P.); (D.G.-W.); (A.H.)
| | - Ángel J. Gutiérrez
- Department of Toxicology, Universidad de La Laguna, La Laguna, 38200 Tenerife, Canary Islands, Spain; (C.R.-A.); (S.P.); (D.G.-W.); (A.H.)
| | - Dailos González-Weller
- Department of Toxicology, Universidad de La Laguna, La Laguna, 38200 Tenerife, Canary Islands, Spain; (C.R.-A.); (S.P.); (D.G.-W.); (A.H.)
- Health Inspection and Laboratory Service, Canary Health Service, S/C de Tenerife, 38006 Tenerife, Canary Islands, Spain
| | - Consuelo Revert
- Departament of Physical Medicine and Pharmacology, University of La Laguna, 38200 Tenerife, Canary Islands, Spain;
| | - Arturo Hardisson
- Department of Toxicology, Universidad de La Laguna, La Laguna, 38200 Tenerife, Canary Islands, Spain; (C.R.-A.); (S.P.); (D.G.-W.); (A.H.)
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