Toxic metals in organic, home and commercially produced eggs, comparative and risk assessment study (original) (raw)
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2017
Increasing consumption of chicken products in Iran makes it very important to analyze their residual heavy metal contents; therefore, the present study has been conducted to determine Pb, Cd, Cr, and Cu in commercial hen eggs, marketed in the city of Hamedan in 2016. In this descriptive study, a sum of 27 samples of hen eggs has been collected from the Hamedan City's market. After preparation and processing the samples in the laboratory, the concentration of metals has been determined in mixed albumen and yolk, using inductively coupled plasma-optical emission spectrometry. Also, all statistical analyses have been conducted, using the SPSS statistical package (version 20) with the results showing that the mean concentrations (mg/kg) of Pb, Cd, Cr, and Cu in the samples have been 0.29±0.16, 0.18±0.04, 0.31±0.03, and 2.81±1.56, respectively. Also, the mean contents of Cd and Cr have surpassed the maximum permissible levels (MPL), established by WHO/FAO. The computed health risk in...
Lead, Cadmium and Copper Levels in Table Eggs
Journal of Advanced Veterinary Research, 2017
A total of 100 fresh hen's egg samples (pooled samples) including farmers' houses and poultry farms' eggs were collected for estimation of lead, cadmium and copper levels (50 pooled samples for each type, each pooled was represented by 5 eggs). Poultry farms' egg samples were purchased from different shops and supermarkets, while farmers' houses eggs were purchased from farmers' houses in Assiut Governorate, Egypt. The samples were digested then, analyzed for detection and measurement of lead, cadmium and copper by using ZEE nit 700P Atomic Absorption Spectrophotometer with Graphite Furnace Unit (AASG) (Perkin –Elmer Atomic Absorption Spectrophometry model 2380, USA). Results indicated that incidence of lead, cadmium and copper in farmers' houses egg samples were 96, 12 and 98% while in poultry farms’ egg samples were 98, 32 and 100%, respectively. Moreover, the samples above MPLs for lead in farmers' houses eggs and poultry farms' eggs were 47 (...
Biological trace element research, 2018
The relative contribution of foodstuffs to intake of heavy metal is still equivocal, and thus, available data are rare. Here, the concentration of ten heavy metals and arsenic were measured in the content of hen egg from five strains of commercial laying hens to evaluate contamination level and potential health risk among local and international consumers in Iran. The estimated daily intake (EDI) of all heavy metals was significantly lower than the provisional tolerable daily intake (PTDI) and respective tolerable daily intake (TDI). The non-carcinogenic and carcinogenic risk values for eating eggs were in the safe range for all consumers, indicating that the no health risk for consumers due to the daily intake of either arsenic or heavy metals. Therefore, intake of heavy metal exposure through the consumption of commercial egg product in Iran is completely safe for both national and international consumers.
Archives of Environmental & Occupational Health
This study aims to quantify heavy metals (Ni, Pb, Zn, Mn, Cr, Cu and Se) in eggs obtained from poultry farms and backyard raised hens by comparing the concentration of metals in their feed intake. Overall, 90 samples of egg and 12 samples of poultry feed (6 each with food and water) were collected from 3 different poultry farms and backyards located in peri-urban areas of Lahore. A di-acid digestion method was adopted for digestion, after which digested samples were analyzed under atomic absorption spectrophotometer. Results showed that the concentration of Pb, Cr and Se in egg white (Pb ¼ 0.6578, Cr ¼ 0.18 and Se ¼ 0.2161), egg yolk (Pb ¼ 0.7011, Cr ¼ 0.2617 and Se ¼ 0.2656), feed (Pb ¼ 2.585, Cr ¼ 1.3039 and Se ¼ 0.9411) and water (Pb ¼ 0.5483, Cr ¼ 0.1006 and Se ¼ 0.3461) were above permissible limits in both poultry farms (study group 1) and backyards (study group 2). The concentration of metals such as Pb, Mn, Cr, Cu and Se in poultry farms eggs were higher than backyard hen eggs, which may be due to the intake of contaminated feed. So, the current study concluded that the higher concentration of metals in eggs has a positive correlation with the intake of feed contaminated with heavy metals.
Elemental Profile in Chicken Egg Components and Associated Human Health Risk Assessment
Toxics
Egg is a food product of high nutritional quality, extensively consumed worldwide. The objectives of this study were the determination of the elemental profile in eggs (egg white, yolk, and eggshell), the estimation of the non-carcinogenic health risk associated with the presence of heavy metals in investigated egg samples, and the development of statistical models to identify the best predictors for the differentiation of egg components. The assessments were carried out in a total set of 210 samples, comprising home-produced and commercial eggs, using inductively coupled plasma mass spectrometry. The results suggested measurable differences amongst hen eggs coming from different husbandry systems. The statistical models employed in this study identified several elemental markers that can be used for discriminating between market and local producer samples. The non-carcinogenic risk related to the consumption of the analyzed egg samples was generally in the safe range for the consum...
Science of The Total Environment, 2009
This overview paper describes a study conducted for the Belgian Federal Public Service of Health, Food Chain Safety and Environment during 2006-2007. Home-produced eggs from Belgian private owners of hens were included in a large study aiming to determine concentration levels of various environmental contaminants. By means of the analyses of soil samples and of kitchen waste samples, obtained from the same locations, an investigation towards the possible sources of contaminants was possible. Eggs, soils, faeces and kitchen waste samples were checked for the presence of dioxins, PCBs (including dioxin-like PCBs), organochlorine pesticides, trace elements, PAHs, brominated flame retardants and mycotoxins. The study design, sampling methodology and primary conclusions of the study are given. It was found that in some cases dioxin-like compounds were present at levels that are of concern for the health of the egg consumers. Therefore, measures to limit their contamination in eggs, produced by hens of private owners, were proposed and deserve further attention. ava i l a b l e a t w w w. s c i e n c e d i r e c t . c o m w w w. e l s ev i e r. c o m / l o c a t e / s c i t o t e n v
Chemical contamination of free-range eggs from Belgium
Food Additives and Contaminants, 2006
The elements manganese, cobalt, nickel, copper, zinc, arsenic, selenium, molybdenum, cadmium, antimony, thallium, lead and mercury, and selected persistent organochlorine compounds (dioxins, marker and dioxin-like polychlorinated biphenyls, dichlorodiphenyltricholroethane (DDT) and metabolites as well as other chlorinated pesticides) were analysed in Belgian free-range eggs obtained from hens of private owners and of commercial farms. It was found that eggs from private owners were more contaminated than eggs from commercial farms. The ratios of levels in eggs from private owners to the levels in eggs from commercial farms ranged from 2 to 8 for the toxic contaminants lead, mercury, thallium, dioxins, polychlorinated biphenyls and the group of DDT. DDT contamination was marked by the substantial presence of p,p 0 -DDT in eggs from private owners in addition to dichlorodiphenyldichloroethylene (p,p-DDE) and dichlorodiphenyldichloroethane (p,p 0 -DDD). It is postulated that environmental pollution is at the origin of the higher contamination of eggs from private owners. Extensive consumption of eggs from private owners is likely to result in toxic equivalent quantity intake levels exceeding the tolerable weekly intake.
Biological Sciences - PJSIR, 2012
A total of 54 hen eggs were procured from nine poultry farms of Sindh, Pakistan in different batches to determine lead and cadmium toxicity. The quantitative analysis of lead (Pb) and cadmium (Cd) in egg samples were performed on electrothermal atomic absorption spectrometer (ETAAS), with Zeeman effects background correction. Lead concentrations in hen egg samples ranged from 0.027 to 1.056 µg/g with a mean value of 0.283 µg/g ± 0.86, whereas cadmium concentrations ranged from 0.001 to 0.012 µg/g with a mean value of 0.003 µg/g ± 0.002. Lead concentrations exceeded the normal levels of 0.020 but cadmium was found lower than the normal levels of 0.005 µg/g.
ICP-OES Analysis of Some Nonessential Trace Elements in Hen's Eggs
SEBHA UNIVERSITY JOURNAL OF PURE & APPLIED SCIENCES, 2022
Ba, Cd, Pb, and Hg) were quantitatively studied in three kinds of hen egg samples (home, street, and market hen eggs) collected from different regions in Aden city-Yemen including Al-Buraiqeh, Al-Hiswah, Khormaksar, and Shaikh Othman. Samples were wet digested and quantitatively analyzed by the Inductively Coupled Plasma-Optical Emission Spectrometer (ICP-OES) technique. Neglecting not detected values (ND), the range concentrations (in ppm units) of elements in hen's eggs were in the range 0.407-7.414 for Al, 0.116-0.645 for V, 0.320-3.130 for Ni, 14.35-21.21 for As, 0.180-4.700 for Cd, 1.372-4.054 for Ba, and 12.078-15.14 for Pb. Since Yemen country does not screen the explored elements in this foodstuff, the recent work was done by comparing the results with other available values reported in the literature and FAO/WHO standards. The mean concentrations of some studied elements such as arsenic, cadmium, and lead in some samples were exceeded the acceptable limits as detailed by presented international specifications and standards. The systematic national testing of hen's eggs production and the quality of environment and hen's feeds should be considered to protect public health.
Journal of Food Quality, 2021
The aim of the present study was to determine the most significant heavy metal concentration in hen eggs, in particular to compare the heavy metal concentration in eggs originating from industrial poultry farms versus free-range hens. The sampling process was carried out between October and December 2018, in the Republic of Kosovo. In total, 22 random egg samples were collected, with 54.5% and 45.5% of samples coming from poultry farms and free-range hens, respectively. The measurements of the heavy metals were taken by inductively coupled plasma mass spectrometry (ICP-MS), using a wide range of elements, and only the most important elements were reported, such as Cr, Mn, Fe, Ni, Cu, Zn, As, Cd, Hg, and Pb within the range of 0.48–8.45, 38.77–289, 4286.59–15383.74, 0.45–144.74, 61.68–550.59, 1078.04–11378.56, 0.29–35.42, 0.27–6.54, and 0.04–1.41 μg kg−1, respectively. This study revealed that the heavy metals in eggs from free-range hens are richer in essential elements such as Mn, ...