Evaluation of Direct Analysis for Trace Elements in Tea and Herbal Beverages by ICP-MS

Milani, Raquel Fernanda; Morgano, Marcelo A.; Saron, Elisabete Segantini; Silva, Fabio F.; Cadore, Solange

doi:10.5935/0103-5053.20150085

Cited by 17 publications

(19 citation statements)

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“…For example, the Ni content of Korean green tea bags is 7,852 times higher than that reported by Veien and Andersen 26 in 1986 25 . Fortunately, the Ni contents of herbal plants and products in this study were considerably lower than those previous reported from other countries 2 3 27 29 30 31 . However, the metal contents of herbal plants and products can differ greatly, even in the same country, depending on types of selected herbal plants, cultivation environment, and time obtained 2 29 .…”

Section: Discussioncontrasting

confidence: 78%

Quantitative Analysis of Metal Contents in Korean Herbs and Herbal Products to Give Advice for Metal Allergic Patient

et al. 2019

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Background Herbs have been used worldwide as complementary and alternative medicines. In Korea, herbs for medical purpose are strictly controlled by the Korea Food and Drug Administration (KFDA). But it does not provide standards for metal antigens. Objective This study conducted to identify the metal contents of Korean herbs and herbal products and to give information on counselling metal allergic patient. Methods The concentration of three metal allergens with high antigenicity, cobalt (Co), chromium (Cr), nickel (Ni) was quantitatively determined using inductively coupled plasma with a mass spectrometer after nitric acid (HNO 3 ) digestion. The herbal objects are as follows: 1) ten kinds of herb plants, 2) ten herbal products sold in Korean drugstores, and 3) ten herbal extracts prescribed by Korean herbal doctors. Results In 30 samples, Ni and Cr were detected in all items. Co was not detected in two drugstore products. Conclusion Although the levels of metal detected in this study were very low relative to international guidelines and KFDA regulations, the herbal preparations contained similar or higher metal levels than known metal-rich foods. It can cause problems when it added to the daily diet and cause deterioration of skin lesions of metal sensitized person.

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Section: Discussioncontrasting

confidence: 78%

Quantitative Analysis of Metal Contents in Korean Herbs and Herbal Products to Give Advice for Metal Allergic Patient

et al. 2019

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“…Another appreciable modification between unpyrolyzed leaves (exhausted tea leaves) and biochar is represented by the chemical composition, studied by EDX, as shown in Table 1. Exhausted tea leaves showed a low content of carbon and a high amount of oxygen together with a relevant amount of alkaline and alkaline earth metals [47]. After pyrolysis, biochar showed a significant increase of carbon content, up to 73.3 wt%, together with a decrement of oxygen to 16.4 wt%.…”

Section: Characterization Of Feedstock and Biocharmentioning

confidence: 98%

Development of Pressure-Responsive PolyPropylene and Biochar-Based Materials

Noori¹,

Bartoli

Frache³

et al. 2020

Micromachines

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In this research paper, we reported the synthesis of biochar-based composites using biochar derived from exhausted tea leaves and polypropylene. The resulting materials were deeply characterized investigating mechanical (dynamic mechanical thermal analysis), thermal (thermogravimetrical analysis and differential scanning calorimetry), morphological (field emission scanning microscopy) and electrical properties vs. temperature. Furthermore, electrical conductivity was studied for a wide range of pressures showing an irreversible plastic deformation. An increment of one order of magnitude in the conductivity was observed in the case of 40 wt% biochar loading, reaching a value of 0.2 S/m. The material produced exhibited the properties of an irreversible pressure sensor.

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“…Trace elements are usually quantified by spectrometric techniques [14,15,16]. Other techniques such as neutron activation analysis (NAA) is also applied to plant samples [17].…”

Section: Introductionmentioning

confidence: 99%

Trace elements measurement in apricot (Prunus armeniaca L.) seeds by neutron activation analysis

Al-Bachir

Sarhil

Al-Haddad

2018

JBBS

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Evaluation of Direct Analysis for Trace Elements in Tea and Herbal Beverages by ICP-MS

Cited by 17 publications

References 0 publications

Quantitative Analysis of Metal Contents in Korean Herbs and Herbal Products to Give Advice for Metal Allergic Patient

Quantitative Analysis of Metal Contents in Korean Herbs and Herbal Products to Give Advice for Metal Allergic Patient

Development of Pressure-Responsive PolyPropylene and Biochar-Based Materials

Trace elements measurement in apricot (Prunus armeniaca L.) seeds by neutron activation analysis

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