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Dimethylated Thioarsenates : A Potentially Dangerous Blind Spot in Current Worldwide Regulatory Limits for Arsenic in Rice

Title data

Planer-Friedrich, Britta ; Kerl, Carolin F. ; Colina Blanco, Andrea E. ; Clemens, Stephan:
Dimethylated Thioarsenates : A Potentially Dangerous Blind Spot in Current Worldwide Regulatory Limits for Arsenic in Rice.
In: Journal of Agricultural and Food Chemistry. Vol. 70 (2022) Issue 31 . - pp. 9610-9618.
ISSN 0021-8561
DOI: https://doi.org/10.1021/acs.jafc.2c02425

Abstract in another language

Arsenic (As) occurrence in rice is a serious human health threat. Worldwide, regulations typically limit only carcinogenic inorganic As, but not possibly carcinogenic dimethylated oxyarsenate (DMA). However, there is emerging evidence that “DMA”, determined by routine acid-based extraction and analysis, hides a substantial share of dimethylated thioarsenates that have similar or higher cytotoxicities than arsenite. Risk assessments characterizing the in vivo toxicity of rice-derived dimethylated thioarsenates are urgently needed. In the meantime, either more sophisticated methods based on enzymatic extraction and separation of dimethylated oxy- and thioarsenates have to become mandatory or total As should be regulated.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Plant Physiology > Chair Plant Physiology - Univ.-Prof. Dr. Stephan Clemens
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Professor Environmental Geochemistry Group
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Professor Environmental Geochemistry Group > Professor Environmental Geochemistry - Univ.-Prof. Dr. Britta Planer-Friedrich
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 550 Earth sciences, geology
Date Deposited: 18 Aug 2022 05:01
Last Modified: 18 Aug 2022 05:01
URI: https://eref.uni-bayreuth.de/id/eprint/71489