Correlation of lithium bioaccessibility from tea (Camellia sinensis L.) with tea type and consumption habits

Erdemir, Ümran Seven; Güçer, Şeref

doi:10.1016/j.foodchem.2017.10.053

Cited by 14 publications

(10 citation statements)

References 34 publications

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“…Based on our and literature data, we suggest an open source Li food database that could be an important resource for consumers and stakeholders as well as nutritionists and dieticians. Furthermore, studies are needed to address the extent to which the food matrix and dietary constituents (e.g., calcium, phosphate, tannic acid) may modulate Li bioavailability in humans [42].…”

Section: Analysis Of Beveragesmentioning

confidence: 99%

Lithium Content of 160 Beverages and Its Impact on Lithium Status in Drosophila melanogaster

Seidel¹,

Jans²,

Hommen

et al. 2020

Foods

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Lithium (Li) is an important micronutrient in human nutrition, although its exact molecular function as a potential essential trace element has not yet been fully elucidated. It has been previously shown that several mineral waters are rich and highly bioavailable sources of Li for human consumption. Nevertheless, little is known about the extent in which other beverages contribute to the dietary Li supply. To this end, the Li content of 160 different beverages comprising wine and beer, soft and energy drinks and tea and coffee infusions was analysed by inductively coupled plasma mass spectrometry (ICP-MS). Furthermore, a feeding study in Drosophila melanogaster was conducted to test whether Li derived from selected beverages changes Li status in flies. In comparison to the average Li concentration in mineral waters (108 µg/L; reference value), the Li concentration in wine (11.6 ± 1.97 µg/L) and beer (8.5 ± 0.77 µg/L), soft and energy drinks (10.2 ± 2.95 µg/L), tea (2.8 ± 0.65 µg/L) and coffee (0.1 ± 0.02 µg/L) infusions was considerably lower. Only Li-rich mineral water (~1600 µg/L) significantly increased Li concentrations in male and female flies. Unlike mineral water, most wine and beer, soft and energy drink and tea and coffee samples were rather Li-poor food items and thus may only contribute to a moderate extent to the dietary Li supply. A novelty of this study is that it relates analytical Li concentrations in beverages to Li whole body retention in Drosophila melanogaster.

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Section: Analysis Of Beveragesmentioning

confidence: 99%

Lithium Content of 160 Beverages and Its Impact on Lithium Status in Drosophila melanogaster

Seidel¹,

Jans²,

Hommen

et al. 2020

Foods

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“…Mentioned constituents were also highlighted on the labels of samples. As contribution of elemental-containing macromolecular structures to the differences in bioaccessibility was highlighted by Erdemir and Gucer [17], different bound forms in fruit matrices could be concluding to represent for this tendency. Moreover, organic labeled samples (three of them) showed no distinct content for the bioaccessible levels of especially toxic elements (As, Cr, Cd and Pb) when compared to the unlabeled ones.…”

Section: Resultsmentioning

confidence: 97%

“…Fruits represented a part of the human diet as an important nutritional source, with high water content and relatively high amount of carbohydrates unlike the low contents of fat and protein among others (vitamins, minerals, dietary fiber or antioxidants) [23]. Although, vitamin C in the samples may be associated with the changing elemental bioaccessibility according to Erdemir and Gucer [17], mainly carbohydrates as well as proteins may be taken into account as two important macromolecular structures according to labels of products to assess the bioaccessible levels. Erdemir and Gucer [17] also observed the increased bioaccessible levels of lithium with the addition of sugar which show the important effect of carbohydrates namely sugars to evaluate the matrix effects.…”

Section: Resultsmentioning

confidence: 99%

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Assessing the Bioaccessibilities of Some Elements in Fruit Based Complementary Baby Foods

Erdemir¹,

Şahan²,

Güçer³

2018

J Nutr Food Sci

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In this study, total concentrations and bioaccessibility of some essential and toxic elements (As, Cd, Cr, Cu, Fe, Mg, Mn, Ni, Pb and Zn) were determined in commercial fruit purees intended for baby consumption as complementary foods. Enzymatic in vitro digestions were performed to simulate the stomach and the intestine conditions. A fivelevel, three factor central composite design, was applied to optimize the open-wet digestion methodology as well as enzyme amounts used in vitro methods to achieve maximum elemental levels. Rice flour and baby food composite certified reference materials analysis were applied to optimize the digestion parameters and evaluate the accuracy of the optimized method. Water fractions of samples were analyzed and evaluated in terms of their suitability for risk assessment studies by inductively coupled plasma mass spectrometry. Recommended dietary allowance level of 1.3% for Zn, adequate intake levels of 15.3%, 0.04%, 4.4% and 68% for Cu, Mg, Mn and Cr, respectively were achieved as well as 20%, 6% level and 2% tolerable intakes of Cd, Ni and As, respectively. Thus, contribution of the consumption of one jar of fruit based complementary baby food to diet of infants aged up to 12 months were assessed.

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“…Samples of infusions after in vitro GID were centrifuged, and their supernatants were analyzed by FAAS. Similarly, contributions of the bioavailable fraction of Li [24] and Mg, Mn, and Fe [25] from infusions of six BTs and GTs were evaluated. As before, no membrane ultrafiltration was used to imitate absorption of these metals in the villi.…”

Section: Introductionmentioning

confidence: 99%

Simplified Method of Multi-Elemental Analysis of Dialyzable Fraction of Tea Infusions by FAAS and ICP OES

Szymczycha‐Madeja

Wełna

Pohl

2019

Biol Trace Elem Res

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A fast and straightforward sample preparation procedure of the dialyzable fraction of infusions of teas prior to their analysis on Al, Ba, Ca, Cu, Fe, Mg, Mn, Ni, Sr, and Zn contents by flame atomic absorption spectrometry (FAAS) and inductively coupled plasma optical emission spectrometry (ICP OES) was developed and validated. The proposed methodology was based on acidification with HNO 3 only and demonstrated good analytical performance, i.e., precision (0.80-5.0%), accuracy (< 5%), recoveries of elements (97.4-105%), and their detection limits (0.075-1.1 μg L −1 ) along with linearity of calibration curves in the whole studied concentration ranges. Applicability of the evaluated procedure, being a useful alternative to time-consuming wet digestions, was tested by determining bioaccessibility of elements in 20 infusions of black (BT) and green (GT) teas as assessed with the aid of in vitro gastrointestinal digestion. Average contributions of bioaccessible fractions (%) of studied metals were as follows: 1.18 (Al)-40.7% (Ca) and 4.65% (Al)-46.3% (Ca) for BTs and GTs, respectively. Drinking daily four cups (1 L) of tea, recommended dietary intakes (RDIs) of Ca, Cu, Fe, Mg, and Zn were covered to a small degree (< 1.5%). Only bioaccessibility of Mn highly contributed to RDI for this metal. According to provisional tolerable weekly intakes (PTWIs) for toxic elements such as Al and Ni, consumption of both types of teas should not represent any health risk. Additionally, analysis of variance of results clearly indicated that BTs and GTs were mostly differentiated due to concentrations of the bioaccessible fraction of Al, Ba, Cu, and Ni.

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Correlation of lithium bioaccessibility from tea (Camellia sinensis L.) with tea type and consumption habits

Cited by 14 publications

References 34 publications

Lithium Content of 160 Beverages and Its Impact on Lithium Status in Drosophila melanogaster

Lithium Content of 160 Beverages and Its Impact on Lithium Status in Drosophila melanogaster

Assessing the Bioaccessibilities of Some Elements in Fruit Based Complementary Baby Foods

Simplified Method of Multi-Elemental Analysis of Dialyzable Fraction of Tea Infusions by FAAS and ICP OES

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