A novel strategy for medical foods digestion and subsequent elemental determination using inductively coupled plasma optical emission spectrometry

Anschau, Kéllen Francine; Enders, Michele S.P.; Senger, Caroline M.; Duarte, Fábio A.; Dressler, Valderi L.; Müller, Edson I.

doi:10.1016/j.microc.2019.04.009

Cited by 11 publications

(5 citation statements)

References 33 publications

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“…ICP-OES constitutes a good analytical technique for the identification and quantitation of elements in different products with high accuracy and precision using ICP multi-element standards and multi-wavelength calibration. A sample preparation to digest the product using microwave in acidic media, also referred to as microwave assisted mineralization or microwave assisted digestion, is usually advantageous in sample preparation [ 27 ]. Time saving is one of the primary advantages of microwave digestion where up to 12 samples can be prepared in the same cycle which lasts as little as 10 min.…”

Section: Methodsmentioning

confidence: 99%

Toxic Elemental Impurities in Herbal Weight Loss Supplements; A Study Using ICP-OES Microwave-Assisted Digestion

Al-Thani

Ibrahim

Alomairi

et al. 2023

Toxics

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The tendency of using weight loss herbal preparations is continuously increasing, especially for the widespread consumption of junk food that is characterized by high calories. Weight loss herbal preparations are considered a type of food supplement product, and, as such, the regulations governing their quality control might be minimal. These products could be locally formulated in any country or internationally imported. Being non-controlled products, the herbal weight-loss products may contain high levels of elemental impurities that might exceed the permissible ranges. Moreover, these products contribute to the total daily intake (TDI) of such elements, which might represent concerns about their potential toxicological danger. In this research, the elemental contents in such products were investigated. The inductively coupled plasma with optical emission spectrometer (ICP-OES) was used to determine the levels of 15 elemental contents, namely, Na, K, Ca, Mg, Al, Cu, Fe, Li, Mn, As, Co, Cr, Cd, Ni and Pb. The results showed that seven micro-elements, namely Cd, Co, Ni, Cr, Pb, Li and Cu, were either not detectable or at a concentration much lower than their tolerable limits. However, all studied macro-elements (Na, K, Ca and Mg), together with Fe, were found at considerable, yet safe levels. On the other hand, Mn, Al and As contents showed perturbing levels in some of the studied products. Finally, a conclusion was highlighted for the necessity for stricter surveillance of such herbal products.

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Section: Methodsmentioning

confidence: 99%

Toxic Elemental Impurities in Herbal Weight Loss Supplements; A Study Using ICP-OES Microwave-Assisted Digestion

Al-Thani

Ibrahim

Alomairi

et al. 2023

Toxics

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“…These articles report the content of selected metals in prescription food products for special medical purposes and modified milk products for newborns and infants. There are also single publications on determination of certain minerals in enteral nutrition formulas from Brazil [6] and Spain [7]. In published works, the content of such main elements as Ca, Mg, P, Na, K [6,7], or essential trace elements, i.e., Cu, Mn, Fe and Zn [5][6][7], and potentially toxic metals, i.e., Cd, Cr, Ni and Pb [3,4,7], were quantified.…”

Section: Introductionmentioning

confidence: 99%

“…There are also single publications on determination of certain minerals in enteral nutrition formulas from Brazil [6] and Spain [7]. In published works, the content of such main elements as Ca, Mg, P, Na, K [6,7], or essential trace elements, i.e., Cu, Mn, Fe and Zn [5][6][7], and potentially toxic metals, i.e., Cd, Cr, Ni and Pb [3,4,7], were quantified. Most often, total concentrations of elements were assessed [3][4][5][6][7], but the dialyzable fraction of Ca, Mg, Fe, Cu and Mn was additionally apportioned [7].…”

Section: Introductionmentioning

confidence: 99%

“…In published works, the content of such main elements as Ca, Mg, P, Na, K [6,7], or essential trace elements, i.e., Cu, Mn, Fe and Zn [5][6][7], and potentially toxic metals, i.e., Cd, Cr, Ni and Pb [3,4,7], were quantified. Most often, total concentrations of elements were assessed [3][4][5][6][7], but the dialyzable fraction of Ca, Mg, Fe, Cu and Mn was additionally apportioned [7]. Prior to element analysis, medicinal food samples were mineralized in concentrated nitric acid [3][4][5][6] in addition to hydrogen peroxide [6].…”

Section: Introductionmentioning

confidence: 99%

“…Most often, total concentrations of elements were assessed [3][4][5][6][7], but the dialyzable fraction of Ca, Mg, Fe, Cu and Mn was additionally apportioned [7]. Prior to element analysis, medicinal food samples were mineralized in concentrated nitric acid [3][4][5][6] in addition to hydrogen peroxide [6]. Typically, closed-vessel, microwave-assisted wet digestion was used for decomposition of samples as received, or tedious and long-lasting dry ashing was applied, providing additional pre-concentration of trace elements [7].…”

Section: Introductionmentioning

confidence: 99%

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Mineral Constituents Profiling of Ready-To-Drink Nutritional Supplements by Inductively Coupled Plasma Optical Emission Spectrometry

2020

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Nutritional drinks (NDs) are medicinal food products intended for people with different health issues constricting nutrients provision. Eight varieties of milkshake style NDs were analyzed in this work. Prior to element analysis, they were freeze-dried, and concentrations of twenty macro- and microelements in analyzed samples were simultaneously measured by ICP-OES after their mineralization in a closed-vessel microwave-assisted digestion system. Results of this analysis indicated that these NDs must be considered as nutrient-dense foods, taking into account mineral constituents. Consumption of two bottles of such NDs per day provides very a high amount or even an excess of human daily requirements set as Recommended Dietary Allowances (RDAs). Generally, concentrations of determined elements in examined NDs were consistent with data given on the labels—most of differences did not exceed 30% (median: −5.91%, standard deviation: 14%). Discovered very strong and moderate positive correlations between concentrations of major and essential elements (Ca, Mg, P, Cu, Fe, Mn, Zn) were likely due to their incorporation into formulations of analyzed NDs. However, relationships between contents of trace elements were the result of concomitance of these elements in substrates used for examined products production or contamination of substrates.

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Progress of environmental sample preparation for elemental analysis

Zhong

Ji²,

Hu³

et al. 2022

Journal of Chromatography A

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A novel strategy for medical foods digestion and subsequent elemental determination using inductively coupled plasma optical emission spectrometry

Cited by 11 publications

References 33 publications

Toxic Elemental Impurities in Herbal Weight Loss Supplements; A Study Using ICP-OES Microwave-Assisted Digestion

Toxic Elemental Impurities in Herbal Weight Loss Supplements; A Study Using ICP-OES Microwave-Assisted Digestion

Mineral Constituents Profiling of Ready-To-Drink Nutritional Supplements by Inductively Coupled Plasma Optical Emission Spectrometry

Progress of environmental sample preparation for elemental analysis

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