In vitro assessment of major and trace element bioaccessibility in tea samples

Alnaimat, Alá S.; Barciela‐Alonso, María Carmen; Herbello-Hermelo, Paloma; Domínguez-González, Raquel; Bermejo-Barrera, Pilar

doi:10.1016/j.talanta.2021.122083

Cited by 13 publications

(8 citation statements)

References 42 publications

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“…69 The use of ICP-QQQ-MS in no gas mode effectively removed polyatomic interferences due to the increased abundance sensitivity. An impressive LOD of 0.007 ng L À1 was achieved, which is well below recommended action levels for 226 Ra detection and lower than that reached by ICP-QMS. Good agreement was obtained with target values for SRM-spiked urine (bias from À4.7% to 6.2%).…”

Section: Mass Spectrometrymentioning

confidence: 69%

“…The bioavailability study was carried out on the infused tea samples and showed high extraction of Ca, K, Mg, Mn, P, Rb and Si whereas the toxic elements As, Cd, Hg and Pb were not detected. This allowed the authors 226 to conclude that drinking teas provide a useful source of nutritional elements with a low risk of exposure to toxic elements.…”

Section: Applications: Foods and Beveragesmentioning

confidence: 99%

“…Another ICP-QQQ-MS application that featured this year was ultra-trace detection of radionuclides for biomonitoring and radiological emergency response. A thorough validation of an ICP-QQQ-MS method for determination of 226 Ra in 0.5 mL urine, following only a dilute and shoot procedure, was reported. 69 The use of ICP-QQQ-MS in no gas mode effectively removed polyatomic interferences due to the increased abundance sensitivity.…”

Section: Mass Spectrometrymentioning

confidence: 99%

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Atomic spectrometry update: review of advances in the analysis of clinical and biological materials, foods and beverages

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Barlow

Cross³

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J. Anal. At. Spectrom.

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Section: Mass Spectrometrymentioning

confidence: 69%

Section: Applications: Foods and Beveragesmentioning

confidence: 99%

Section: Mass Spectrometrymentioning

confidence: 99%

See 1 more Smart Citation

Atomic spectrometry update: review of advances in the analysis of clinical and biological materials, foods and beverages

Patriarca

Barlow

Cross³

et al. 2022

J. Anal. At. Spectrom.

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“…Minerals, as one of the six essential nutrients, are necessary for the human body to maintain major life activities, including major elements and trace elements. A lack of minerals would post certain deleterious impacts on human health (Alnaimat et al ., 2021). Dietary supplements like multivitamins and mineral products are consumed to promote human health, yet sometimes damaged during storage, reducing its efficacy (Kim et al ., 2018).…”

Section: Introductionmentioning

confidence: 99%

Ferulic acid and EGCG alter the structural characteristics of ovalbumin and its application in mineral loading

Huang

Yang

Chen

et al. 2022

Int J of Food Sci Tech

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This study aims to fabricate mineral-loading nanocarriers using natural materials. The interaction patterns between ovalbumin (OVA) and four water-soluble polyphenols, namely ferulic acid (FA), (-)-Epigallocatechin 3-gallate (EGCG), gallic acid (GA) and epicatechin (EC), were investigated. Results showed that the optimised conditions for preparing stable OVA-polyphenol complexes are at the OVA-polyphenol ratio of 4:1 at pH 6, under which OVA-FA and OVA-EGCG showed the highest stability and mineral-loading capacity among four OVA-polyphenol complexes. The fluorescence results indicated that the addition of EGCG and FA induced a significant fluorescence quenching to OVA. The interaction between OVA and polyphenols involved hydrogen bonding, hydrophobic interaction and electrostatic interaction. Fourier transform infrared spectroscopy (FTIR) analysis suggested that both FA and EGCG enhanced the stability and orderliness of the structure of OVA. The transmission electron microscopy images also exhibited the spherical structure of OVA after the addition of FA and EGCG. Furthermore, scanning electron microscope-energy dispersive X-ray spectrum results suggested that OVA-FA and OVA-EGCG complexes were better mineral carriers than OVA-GA and OVA-EC. This study may serve as the theoretical support for the promising application of OVA in the fabrication of mineral-loading nanocarriers in functional food and pharmaceutic.

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“…The acidic soil in which tea is grown makes it easier for plants to absorb trace metal elements . Excessive trace metal elements in tea can significantly affect physical health and even lead to a series of diseases, such as Wilson’s disease, Alzheimer’s, and Menkes diseases. , Hence, according to the requirements of the U.S. Environmental Protection Agency (EPA), the allowable level of copper in water is 1.3 ppm (∼20 μM). , Due to the severe situation of heavy metal pollution, copper pollution has always been an inevitable problem . Therefore, it is necessary to design an effective strategy for the detection of Cu 2+ in tea.…”

Section: Introductionmentioning

confidence: 99%

Blue Carbon Dot-Based Portable Smartphone Platform for Visualization of Copper(II)

Pan

Yang

et al. 2022

ACS Appl. Nano Mater.

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The acidic soil where tea grows makes the accumulation of copper ions (Cu2+) easy. Long-term drinking of tea infusions and tea beverages will cause abnormal accumulation of copper in the human body and endanger human health. Herein, we designed a visual portable smartphone platform based on ratiometric fluorescent nanoprobes for the rapid, real-time, and sensitive detection of Cu2+ in tea and tea beverages. We synthesized the ratiometric fluorescent nanoprobe formed by blue carbon dots (BCDs), which are used as internal standards, and a sensing reagent (diethyl-[5-(2-1,4,7,10-tetraaza-cyclododec-1-yl-acetylamino)-benzo[α]phenoxazin-9-ylidene]-ammonium (cyclen-NB)) for Cu2+. With an excitation wavelength of 330 nm, the emission wavelengths of cyclen-NB and BCDs are 674 and 451 nm, respectively. Cyclen-NB effectively captures Cu2+ to form a metal complex via a ligand-to-metal charge transfer (LMCT), resulting in obvious color changes from red to blue-violet. The designed ratiometric fluorescent nanoprobe has high sensitivity, good selectivity, and strong anti-interference ability, and the detection limit can be as low as 1.37 nM. Furthermore, a visual portable sensing platform was constructed based on the ratiometric fluorescent nanoprobe in combination with smartphones. The color recognition software of the smartphone can convert the color information of the photos taken by the mobile phone into digital data for analysis; and the detection limit is as low as 4.83 nM, and the yield rate is 86.79–111.20% (RSD ≤ 4.95). Therefore, the method reported in this manuscript can provide a convenient method for rapid on-site and visual inspection of tea and tea beverages for food safety.

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In vitro assessment of major and trace element bioaccessibility in tea samples

Cited by 13 publications

References 42 publications

Atomic spectrometry update: review of advances in the analysis of clinical and biological materials, foods and beverages

Atomic spectrometry update: review of advances in the analysis of clinical and biological materials, foods and beverages

Ferulic acid and EGCG alter the structural characteristics of ovalbumin and its application in mineral loading

Blue Carbon Dot-Based Portable Smartphone Platform for Visualization of Copper(II)

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