<sup>137</sup>Cs and<sup>40</sup>K in some traditional herbal teas collected in the mountain regions of Serbia

Mitrović, Branislava M.; Grdović, Svetlana; Vitorović, Gordana; Vitorović, D.; Pantelić, Gordana K.; Grubic, G.

doi:10.1080/10256016.2014.964233

Cited by 16 publications

(5 citation statements)

References 18 publications

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“…Two recent studies reported greater Th concentration levels ranging from 0.597 to 9.918 mg/kg [67] and from 2.46 to 14.76 mg/kg [68]. Cesium radioactivity concentration levels were reported by Oprea et al [68] and Mitrovic et al [69], however, the current study did not determine radiological risk.…”

Section: Metal(loid) Concentration Levels In Tea Plant Parts and Soilcontrasting

confidence: 58%

Occurrence and Risk of Metal(loid)s in Thelesperma megapotamicum Tea Plant

Samuel-Nakamura

Hodge

2019

Plants

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This study reports on the harvesting, ingestion, and contamination of American Indian tea Thelesperma megapotamicum grown on the Navajo Reservation in New Mexico. Uranium (U) and co-metal(loid)s (As, Cd, Cs, Mo, Pb, Se, Th, and V) have contaminated local soil and plants. Tea plants were gathered for analysis near U mining impacted areas. The study collected samples of wild tea plants (n = 14), roots (n = 14), and soil (n = 12) that were analyzed with inductively coupled plasma mass spectrometry. Tea harvesting activities, behavior, and ingestion information were collected via questionnaires. Harvesting took place in community fields and near roadways. Results indicate edible foliage concentration levels for Cd exceeded the World Health Organization (WHO) raw medicinal plant permissible level guidelines. Tea samples collected near high traffic areas had significantly greater Cd and Mo concentrations than those collected near low traffic areas (p < 0.001). Tea sample metal(loid) concentration levels ranged from 0.019–7.916 mg/kg. When compared to established food guidelines including the WHO provisional tolerable weekly intake (PTWI), reference dietary intake, recommended dietary allowance, and the tolerable upper limit (UL), Cd exceeded the WHO guidelines but none exceeded the PTWI nor the UL. These findings warrant improved standardization and establishment of universal guidelines for metal(loid) intake in food.

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Section: Metal(loid) Concentration Levels In Tea Plant Parts and Soilcontrasting

confidence: 58%

Occurrence and Risk of Metal(loid)s in Thelesperma megapotamicum Tea Plant

Samuel-Nakamura

Hodge

2019

Plants

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“…The artificial radionuclide 137 Cs was detected (MDA-2.9 Bq/kg) in five of the seven investigated samples. The variation of the 137 Cs content in plants is a consequence of different soil contamination and geochemical characteristics, meteorological conditions, plant species and growing conditions [10]. A similar content of 137 Cs in herbal teas from different regions of Serbia, except for blueberry tea, has been reported in a study that investigated fifteen samples of herbal teas (collected in 2018) and found that the activity concentration of 137 Cs ranged from below MDA to 24.7 Bq/kg that was measured in blueberry tea [7].…”

Section: Resultsmentioning

confidence: 99%

“…In addition to the radionuclides, herbal teas can be a source of other contaminants such as pesticides, mycotoxins, microorganisms and heavy metals [9]. Previous studies have shown that the contaminants from herbal teas are generally transferred to tea infusions in small quantities, making the infusions safe for human consumption [7,9,10].…”

Section: Introductionmentioning

confidence: 99%

Natural and Artificial Radionuclides in Herbal Teas

Ajtić¹,

Mitrović²

2022

RAP Conference Proceedings

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Due to their therapeutic and pharmacologic properties, medicinal herbs have a long history of use around the world. The objective of this study is to determine the activity concentration of natural ( 40 K, 226 Ra, 232 Th, and 238 U) and artificial ( 137 Cs) radionuclides in samples of herbal teas from Serbia. The samples of the following commercially available teas: dandelion leaf (Taraxaci folium), mulberry leaf (Mori nigrae folium), ground ivy (Glechoma hederacea), sweet wormwood (Artemisia annua), rose hip (Cynosbati fructus), wall germander (Teucrium chamaedrys), and thyme (Thymus vulgaris), were collected in Serbia in 2021. The radionuclides' activity concentrations were determined using gamma spectrometry. The results show that among the natural radionuclides, 40 K is dominant (320-1600 Bq/kg), while the activity concentration of 226 Ra and 232 Th ranges from below the minimum detectable activity (MDA) to 12 Bq/kg, and below the MDA to 13 Bq/kg, respectively. In all investigated samples, the 238 U activity concentration is below the MDA. Cesium-137 is detected in five out of seven analysed samples (MDA-2.9 Bq/kg). The results indicate that 137 Cs, released into the atmosphere after the Chernobyl accident in 1986, is still present in the environment of Serbia. Nevertheless, according to the Serbian legislation regulating the maximum permitted levels of radionuclides in foodstuffs, all of the investigated samples of herbal teas are safe for human consumption.

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“…It is important to know the level of radioactivity concentrations in tea to ensure consumer safety. The activity concentration in tea was evaluated in areas of high background radiation (Hamzah et al, 2011;Mitrovi´c et al, 2014).…”

Section: Resultsmentioning

confidence: 99%

Determination of Radionuclides and Elemental Concentrations in Black and White Tea Samples from Karadeniz in Turkey

Kamislioglu

Eke

Kaman

et al. 2021

Karadeniz Fen Bilimleri Dergisi

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Tea is the second most consumed plant worldwide after water and it can be grown in humid climates. Considering the frequency of consumption, it is inevitable for the tea plant to become a very important field of study both in terms of commercial and public health. The tea plant appears in four different forms which are green tea, black tea, oolong tea and white tea depending on the production method. Especially white tea has started to attract the attention of science in recent years due to its antioxidant effect. The aim of this study is to examine radionuclides and elemental concentrations of black and white tea collected from Karadeniz in Turkey. Natural and artificial radionuclides concentrations were determined using gamma-ray spectrometry. 226Ra, 232Th, 40K, 137Cs were detected in both black and white tea samples. Elemental concentrations of the black and white tea were determined using energy dispersive x-ray fluorescence (EDXRF) spectrometry. Scanning electron microscopy (SEM) micrographs were obtained for black and white tea samples. 226Ra and 137Cs activity concentrations of black tea are higher than white tea however 232Th and 40K activity concentrations of white are higher than black tea. Total dose value of white is higher than black tea.

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¹³⁷Cs and⁴⁰K in some traditional herbal teas collected in the mountain regions of Serbia

Cited by 16 publications

References 18 publications

Occurrence and Risk of Metal(loid)s in Thelesperma megapotamicum Tea Plant

Occurrence and Risk of Metal(loid)s in Thelesperma megapotamicum Tea Plant

Natural and Artificial Radionuclides in Herbal Teas

Determination of Radionuclides and Elemental Concentrations in Black and White Tea Samples from Karadeniz in Turkey

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137Cs and40K in some traditional herbal teas collected in the mountain regions of Serbia

Cited by 16 publications

References 18 publications

Occurrence and Risk of Metal(loid)s in Thelesperma megapotamicum Tea Plant

Occurrence and Risk of Metal(loid)s in Thelesperma megapotamicum Tea Plant

Natural and Artificial Radionuclides in Herbal Teas

Determination of Radionuclides and Elemental Concentrations in Black and White Tea Samples from Karadeniz in Turkey

Contact Info

Product

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About

¹³⁷Cs and⁴⁰K in some traditional herbal teas collected in the mountain regions of Serbia