Studying the contamination of tea and herbal infu-sions with myсotoxins (Message 2)

Kiseleva, M.G.; Chalyy, Z.A.; Sedova, I.B.; Minaeva, L.P.; Sheveleva, S.A.

doi:10.21668/health.risk/2020.1.04

Cited by 2 publications

(12 citation statements)

References 11 publications

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“…Kiseleva et al (2020) found STC levels below the LOD in one black tea sample and six herbal blends (concentrations ranging between <4 and 10.0 µg kg −1 ) collected from tea markets in the Russian Federation, whereas no traces of this mycotoxin were found in the green and Pu-erh teas included in this recent study [ 58 ]. The co-occurrence of both AFs and STC in the present study in mycotoxin-positive green teas ( n =3), Pu-erh teas ( n = 3), and mycotoxin-rich peppermint tea raises concerns over their possible cumulative effects, which should be taken into account when evaluating mycotoxins’ impacts on human health.…”

Section: Discussionmentioning

confidence: 88%

“…While only a few recent studies have included Fusarium and Alternaria mycotoxins in their surveys for tea contamination, 1D-LC-MS mostly indicated a low sensitivity and issues related to the proper separation of 3-AcDON and 15-AcDON [ 58 ], as well as the need for multistep sample preparation to overcome these issues [ 15 ]. The developed 2D-LC method, which was applied within the present study, notably improved the separation efficiency of different DON metabolites and other challenging mycotoxins [ 17 ].…”

Section: Discussionmentioning

confidence: 99%

“…Kiseleva et al (2020) also reported different Fusarium fungal metabolites among the 29 total mycotoxins tested in 24 C. sinensis teas and 24 herbal teas [ 58 ]. This study reported two firefly tea samples that were positive for DON levels below the LOQ (<1250 µg kg −1 ), while no traces of DON were found in any other teas tested within this study.…”

Section: Discussionmentioning

confidence: 99%

“…This study reported two firefly tea samples that were positive for DON levels below the LOQ (<1250 µg kg −1 ), while no traces of DON were found in any other teas tested within this study. While AcDON metabolites cannot be separated using the method reported in this study, two packaged samples of green tea and three samples of black tea were identified to be positive for some of the acetylated DON metabolites found below the LOQ (<250 µg kg −1 ) [ 58 ]. The results of the study by Kiseleva et al (2020) are in good agreement with the results of the present study and also indicated the low prevalence of T-2 toxins in tea samples.…”

Section: Discussionmentioning

confidence: 99%

“…The results of the study by Kiseleva et al (2020) are in good agreement with the results of the present study and also indicated the low prevalence of T-2 toxins in tea samples. Here, only three samples were positive for T-2 below the detection level, whereas Kiseleva et al identified a metabolite of a T-2 triol that was found in one herbal blend sample at 10.00 µg kg −1 [ 58 ].…”

Section: Discussionmentioning

confidence: 99%

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Determination of Fungi and Multi-Class Mycotoxins in Camelia sinensis and Herbal Teas and Dietary Exposure Assessment

Reinholds

Bogdanova

Pugajeva

et al. 2020

Toxins

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In this paper, a study of fungal and multi-mycotoxin contamination in 140 Camellia sinensis and 26 herbal teas marketed in Latvia is discussed. The analysis was performed using two-dimensional liquid chromatography with time-of-flight mass spectrometry (2D-LC-TOF-MS) and MALDI-TOF-MS. In total, 87% of the tea samples tested positive for 32 fungal species belonging to 17 genera, with the total enumeration of moulds ranging between 1.00 × 101 and 9.00 × 104 CFU g−1. Moreover, 42% of the teas (n = 70) were contaminated by 1 to 16 mycotoxins, and 37% of these samples were positive for aflatoxins at concentrations ranging between 0.22 and 41.7 µg kg−1. Deoxynivalenol (DON) and its derivatives co-occurred in 63% of the tea samples, with their summary concentrations reaching 81.1 to 17,360 µg kg−1. Ochratoxin A (OTA), enniatins, and two Alternaria toxins were found in 10–37% of the teas at low concentrations. The dietary exposure assessment based on the assumption of a probable full transfer of determined mycotoxins into infusions indicated that the analysed teas are safe for consumers: the probable maximum daily exposure levels to OTA and the combined DON mycotoxins were only 0.88 to 2.05% and 2.50 to 78.9% of the tolerable daily intake levels.

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Section: Discussionmentioning

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 3 more Smart Citations

Determination of Fungi and Multi-Class Mycotoxins in Camelia sinensis and Herbal Teas and Dietary Exposure Assessment

Reinholds

Bogdanova

Pugajeva

et al. 2020

Toxins

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Mycotoxin contamination of fresh berries and fruits marketed in the central region of Russia

Sedova¹,

Chalyy²,

Efimochkina³

et al. 2022

Health Risk Analysis

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New emerging strains of toxigenic molds in agricultural areas and insufficient data on levels of their toxic metabolites occurring in domestic horticultural fruits and berries require risk assessment of MT contamination for this plant group of mass consumer products. This study concentrated on samples of fresh fruits and berries sold on the consumer market (185 samples, including 127 intact and 58 with signs of deformation and molding). We applied our own developed technique for quantification of mycotoxins based on HPLC-MS/MS. In this study, we were the first in the RF to examine contamination of garden strawberries, raspberries, currants, huck-leberries, blueberries, gooseberries, dogwood, plums, blackthorn, apples, pears) with 27 MT including poorly studied emergent MT (EMT), produced by Aspergillus, Penicillium, Fusarium and Alternaria. Strawberries, gooseberries, black currants and raspberries turned out to be the most contaminated with MT; red currants, apples and pears were less contaminated. The greatest variety of MT and EMT species was found in strawberries (23 MT), gooseberries (8 MT), black currants (7 MT) and raspberries (6 MT). Among the regulated MT, fumonisins B1 and B2, deoxynivalenol, zearalenone, T-2 toxin, ochratoxin A and aflatoxin B1 were detected in intact strawberries; patulin, in raspberries; deoxynivalenol and zearalenone, in black currant. As for damaged and moldy berries and fruits, the list of detectable toxins was expanded, primarily due to the detection of several types of unregulated EMTs. EMT tenuazonic acid was mainly detected in moldy berries; its levels increased manifold in almost all species, except for strawberries in which penicillic acid prevailed. These new data on MT contamination in fruits and berries indicate the necessity to perform in-depth hygienic assessment of such products sold on the Russian market to identify MT, EMT and their producers. The obtained results will be used to identify hazards at the first stage in risk assessment with its focus on MT and EMT contamination of fresh fruits and berries.

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Studying the contamination of tea and herbal infu-sions with myсotoxins (Message 2)

Cited by 2 publications

References 11 publications

Determination of Fungi and Multi-Class Mycotoxins in Camelia sinensis and Herbal Teas and Dietary Exposure Assessment

Determination of Fungi and Multi-Class Mycotoxins in Camelia sinensis and Herbal Teas and Dietary Exposure Assessment

Mycotoxin contamination of fresh berries and fruits marketed in the central region of Russia

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