Evolution of approaches in conducting total diet studies

Betsy, A.; Rao, V. Sudershan; Polasa, Kalpagam

doi:10.1002/jat.2718

Cited by 10 publications

(5 citation statements)

References 75 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Cesium is absorbed by the body as an analog of potassium, which is one of the essential elements of living cells, and is accumulated in the parenchyma of the muscles and organs [12]. However, the biological concentration factor of cesium is not very high, unlike for heavy metals, and is in the range of one to two orders of magnitude in large predatory fish [13][14][15][16][17][18][19]. The effective half-life is considered to be the same level as biological half-life in humans, about 100 days, because of the long half-life of Cs-134 and Cs-137 [20].…”

Section: Cesiummentioning

confidence: 99%

Bioremediation of Biophilic Radionuclides by Algae

Minoda¹

2019

Algae

View full text Add to dashboard Cite

High amounts of radionuclides were released into the environment by the nuclear power plant accident of 2011 in Japan. Among the radioactive material, cesium, iodine, and strontium were especially dangerous because of their biophilic characteristics that allowed them to accumulate in living organisms, either as essential elements for iodine or analogs of potassium and calcium for cesium and strontium, respectively. As a result, there was a high social demand for decontamination to avoid exposure to these elements. The authors screened around 200 strains of algae and plants for their ability to absorb radioactive nuclides. The eustigmatophycean algae Vacuoliviride crystalliferum and the cyanophytes Stigonema ocellatum and Nostoc commune showed the highest bioaccumulation activity for the removal of cesium, strontium, and iodine from the environment, respectively. In addition to these strains, the authors also found that the extremophilic unicellular red algae Galdieria sulphuraria could remove high levels of dissolved cesium from media in mixotrophic growth conditions. In this chapter, the intake mechanism of cesium, iodine, and strontium is reviewed. Recent findings on the absorption of these elements by algae are discussed to highlight the possibility of decontaminating polluted land and water at nuclear sites by phytoremediation.

show abstract

Section: Cesiummentioning

confidence: 99%

Bioremediation of Biophilic Radionuclides by Algae

Minoda¹

2019

Algae

View full text Add to dashboard Cite

show abstract

“…90 Sr is of particular concern because of its long half-life (28 years) and its potential risk of deposition in bone (Betsy et al 2012). On the other hand, iodine is an essential element for higher animals but has negative effects at high concentrations.…”

Section: Introductionmentioning

confidence: 99%

Global searches for microalgae and aquatic plants that can eliminate radioactive cesium, iodine and strontium from the radio-polluted aquatic environment: a bioremediation strategy

et al. 2013

View full text Add to dashboard Cite

The Fukushima 1 Nuclear Power Plant accident in March 2011 released an enormously high level of radionuclides into the environment, a total estimation of 6.3 × 1017 Bq represented by mainly radioactive Cs, Sr, and I. Because these radionuclides are biophilic, an urgent risk has arisen due to biological intake and subsequent food web contamination in the ecosystem. Thus, urgent elimination of radionuclides from the environment is necessary to prevent substantial radiopollution of organisms. In this study, we selected microalgae and aquatic plants that can efficiently eliminate these radionuclides from the environment. The ability of aquatic plants and algae was assessed by determining the elimination rate of radioactive Cs, Sr and I from culture medium and the accumulation capacity of radionuclides into single cells or whole bodies. Among 188 strains examined from microalgae, aquatic plants and unidentified algal species, we identified six, three and eight strains that can accumulate high levels of radioactive Cs, Sr and I from the medium, respectively. Notably, a novel eustigmatophycean unicellular algal strain, nak 9, showed the highest ability to eliminate radioactive Cs from the medium by cellular accumulation. Our results provide an important strategy for decreasing radiopollution in Fukushima area.Electronic supplementary materialThe online version of this article (doi:10.1007/s10265-013-0596-9) contains supplementary material, which is available to authorized users.

show abstract

“…The toxicity of heavy metals from food sources has been well documented over the past years in the literature [1][2][3][4][5][6]. Moreover, environmental pollution is gradually becoming an immense concern globally, and accordingly, food chain contamination is becoming ever more important in light of its role in human health and nutrition.…”

Section: Introductionmentioning

confidence: 99%

“…In the developed countries (USA, Canada, EU countries, and others), numerous studies have targeted the quantification of Pb and Cd in meats and their products [17][18][19][20][21][22][23]. In addition to such studies, others [1][2][3][4] have utilized TDSs as suggested by health organizations, to assess the risk from consuming such products.…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of lead and cadmium levels in various brands of canned and processed meat products in Lebanon

Obeid

Saliba

Younis

et al. 2013

WIT Transactions on Ecology and the Environment

View full text Add to dashboard Cite

Knowledge of toxic metal concentrations in meat products is important for assessing their risk on health when consumed. Levels of such metals have neither been questioned, nor the appropriate total dietary studies (TDS) have ever been conducted in Lebanon to carry out proper risk assessments. The study reports on the levels of lead (Pb) and cadmium (Cd) in canned and processed meats sold in the north. 75 brands of canned and 33 of processed meats were purchased from local markets. Digested samples were analysed using graphite furnace atomic absorption spectroscopy (GFAAS) to determine the metals' concentrations. All samples were analysed in triplicate and included blanks and certified reference material (CRM) to validate the analysis. 46 samples (61%) of the canned showed levels of Pb ranging from 0.2 to 816.1µg/kg while 68 samples (91%) showed Cd levels ranging from 0.19 to 138.3µg/kg. For the processed, 91% of the samples revealed Pb levels ranging from 0.245 to 61.3µg/kg, while 97% tested positive for the presence of Cd in the range of 0.02 to 29.7µg/kg. In general, processed meats were found to have lower concentrations of both metals, whereas canned meats posed the greater risk. In comparison with the provisional tolerable weekly intake levels (PTWI), data showed that adults almost reached the set PTWIs for a number of samples, whereas children, have markedly exceeded such values, sometimes by 186%. Data suggests that immediate action should be taken to carry out comprehensive TDS and risk assessment studies.

show abstract

Evolution of approaches in conducting total diet studies

Cited by 10 publications

References 75 publications

Bioremediation of Biophilic Radionuclides by Algae

Bioremediation of Biophilic Radionuclides by Algae

Global searches for microalgae and aquatic plants that can eliminate radioactive cesium, iodine and strontium from the radio-polluted aquatic environment: a bioremediation strategy

Comparative analysis of lead and cadmium levels in various brands of canned and processed meat products in Lebanon

Contact Info

Product

Resources

About