Determination of Selected Essential and Non-Essential Metals in Three Types of Teff (&amp;lt;i&amp;gt;Eragrostis tef&amp;lt;/i&amp;gt;) Cultivated in Southern Ethiopia

Habte, Abebe; Lelago, Alemu; Doda, Mesfin Bibiso; Kanido, Camerun Kastro

doi:10.4236/jacen.2020.94020

Cited by 6 publications

(8 citation statements)

References 20 publications

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“…The concentrations of Fe, Mn, Zn, Cu, Ca, Co, Mg, Na, and K in this study were in agreement with the previous studies [ 25 – 27 ]. The concentration of K was the most abundant element, followed by Mg and Ca in teff samples corroborated with the previous studies [ 26 , 28 – 30 ]. A similar trend, i.e., a higher concentration of K, has also been reported in teff grains from other areas of Ethiopia [ 31 ].…”

Section: Resultssupporting

confidence: 91%

Section: Resultssupporting

confidence: 91%

“…The concentrations of the trace elements (Cu, Zn, Co, Ni, Mn, and Cr) are in good agreement with the results reported by Habte et al [ 26 ] and Baye et al [ 38 ], as indicated in Table 5 . Similarly, the determined concentrations of Mn and Cu lies within the range of values reported by Gebregewergis [ 39 ] and Habte et al [ 26 ]. On the other hand, the determined concentrations of Ca and Zn are higher than that reported by Baye et al[ 38 ], and the amounts of Co, Cu, and Cr were higher than that reported by Dame [ 28 ].…”

Section: Resultssupporting

confidence: 91%

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Multielement analysis coupled with chemometrics modelling for geographical origin classification of teff [Eragrostis tef (Zuccagni) Trotter] grains from Amhara Region, Ethiopia

et al. 2023

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Teff [Eragrostis tef (Zuccagni) Trotter] is an indigenous crop in Ethiopia, and Amhara region is the predominant teff producing region in the country. This study was aimed at developing an analytical methodology useful to determine the geographical origin of teff produced in the Amhara Region, based on multielement analysis combined with multivariate statistical techniques. For this, a total of 72 teff grain samples were collected from three zones (West Gojjam, East Gojjam, and Awi) and analysed for K, Na, Mg, Ca, Mn, Cu, Fe, Co, Ni, Zn, Cr, and Cd contents using inductively coupled plasma-optical emission spectroscopy (ICP-OES). The digestion and ICP-OES analysis method were accurate, with percentage recovery ranging 85.5 to 109% across the different metals analysed. Principal component analysis (PCA) and linear discriminant analysis (LDA) were applied to discriminate samples based on their production regions. Magnesium, Ca, Fe, Mn, and Zn were the most discriminating elements among the samples. The LDA model provided 96% correct classification of samples into production regions and varietal types, with an average prediction ability of 92%. Hence, the multielement analysis combined with statistical modeling can be used in the authentication of the geographical origin and varietal type of teff from Amhara region.

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Section: Resultssupporting

confidence: 91%

Section: Resultssupporting

confidence: 91%

Section: Resultssupporting

confidence: 91%

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Multielement analysis coupled with chemometrics modelling for geographical origin classification of teff [Eragrostis tef (Zuccagni) Trotter] grains from Amhara Region, Ethiopia

et al. 2023

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“…This finding was confirmed by the analysis of spiked recovery. A spiked recovery analysis was performed as a quality control to calculate the recovery of the analyte spike added to the sample prior to sample preparation [12] (Table 4). It was used to determine any matrix effects and sample preparation losses [3].…”

Section: % Recovery = × 100mentioning

confidence: 99%

Adjusting Acid Digestion Procedure to Determine the Concentration Levels of Essential Metals in Teff Samples

Gebregewergis¹,

Achenef²

2022

WJAC

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“…A few papers have investigated metals found in teff samples (Abraha, 2021;Abraha et al, 2020;Habte et al, 2020;Zeleke, 2009).…”

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confidence: 99%

The levels of essential nutrients and nonessential metals in different varieties of teff produced in Hidabu Abote Woreda, Oromia, Ethiopia

Seyoum,

Fayissa,

Geleta

2024

Food Science & Nutrition

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Ethiopia is the world's largest producer of teff (Eragrostis tef Zucc). This research was intended to determine the levels of mineral nutrients (metals and nonmetals) and nonessential metals in the grains of teff. Following the optimization of the method, the samples were wet‐digested using reagents (5‐mL HNO3 and 1‐mL HClO4) at a temperature of 230°C for two and a half hours and analyzed using inductively coupled plasma–optical emission spectrometry. Under the optimum procedure, the coefficients of determination (R2) ranged between .9980 and .9999. The limits of detection and limits of quantification were in the range of 0.036–14.49 and 0.111–43.93 mg/kg, respectively. The recovery ranged from 80.72% to 107.79%, indicating that the method was accurate. The optimized and validated method was applied to quantify the levels of analytes in the teff samples. The overall mean concentrations of the analytes in the three varieties of teff samples were determined (mg/kg) to be in the order P (3890–4853) > K (3040–3784) > Ca (1906–1959) > Mg (1402–1698) > Fe (128–305) > Mn (64–127.8) > Na (50–136.5) > Zn (19.8–27.3) > B (1.8–21.9) > Cu (4.17–6.9) > Ni (2.6–4.05) > Hg (1.8–4.0) > Pb (0.048–3.7) > Cd (0.012–2.09) > As (0.02–0.24), with a % RSD ranging between 0.017 and 11.1. The results revealed that teff grains are a good source of minerals and contain a significant amount of toxic elements, such as Cd, Hg, Pb, and As.

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Determination of Selected Essential and Non-Essential Metals in Three Types of Teff (<i>Eragrostis tef</i>) Cultivated in Southern Ethiopia

Cited by 6 publications

References 20 publications

Multielement analysis coupled with chemometrics modelling for geographical origin classification of teff [Eragrostis tef (Zuccagni) Trotter] grains from Amhara Region, Ethiopia

Multielement analysis coupled with chemometrics modelling for geographical origin classification of teff [Eragrostis tef (Zuccagni) Trotter] grains from Amhara Region, Ethiopia

Adjusting Acid Digestion Procedure to Determine the Concentration Levels of Essential Metals in Teff Samples

The levels of essential nutrients and nonessential metals in different varieties of teff produced in Hidabu Abote Woreda, Oromia, Ethiopia

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