Scientific evidence suggests that apicultural products accumulate pollutants present in the hive environment, thus, they can be used as bioindicators. However, our understanding on the food safety implications of the presence of potentially toxic trace elements in these products remains incomplete. In our study, available data on the trace metal content of bee bread, propolis, beeswax and royal jelly, as well as their possible sources are reviewed. Furthermore, dietary risk assessments were conducted for elements that do not have any biological role in humans by comparing the estimated exposures with official reference values. In the case of elements with genotoxic carcinogen potential, the margin of exposure (MoE) approach was applied. The observed concentration ranges vary over a wide range for Fe (0.94-2125.20 mg/kg), Zn (
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http://dx.doi.org/10.1016/j.chemosphere.2023.139571 DOI Listing Publication Analysis
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Nucleic Acids Res
January 2025
State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning 530004, China.
Copper (Cu), a trace element with redox activity, is both essential and toxic to living organisms. Its redox properties make it a cofactor for a variety of proteins, but it also causes oxidative stress, hence the need to maintain intracellular copper homeostasis. However, the role of copper in the regulation of antioxidant defense in bacteria remains unclear, and the involved transcription factors remain to be explored.
View Article and Find Full Text PDFChemosphere
January 2025
Laboratory of Zoology, Research Institute for Biosciences, University of Mons, Mons, Belgium. Electronic address:
Recently, there has been growing concern about the impacts of metal pollutants on insect populations, particularly as human societies increasingly rely on metal-based technologies. Unlike organic pollutants, metals - both essential and non-essential - are non-degradable and readily accumulate in insect tissues, sometimes reaching hazardous levels. While numerous studies address how insects cope with pesticide pollution, there is a notable scarcity of knowledge regarding their abilities to confront metal pollution.
View Article and Find Full Text PDFEcotoxicol Environ Saf
January 2025
Department of Biosystems and Technology, Swedish University of Agricultural Sciences, Alnarp 23456, Sweden. Electronic address:
Nickel (Ni) is required in trace amounts (less than 500 µg kg) in plants to regulate metabolic processes, the immune system, and to act as an enzymatic catalytic cofactor. Conversely, when nickel is present in high concentration, it is considered as a toxic substance. Excessive human nickel exposure occurs through ingestion, inhalation, and skin contact, ultimately leading to respiratory, cardiovascular, and chronic kidney diseases.
View Article and Find Full Text PDFJ Hazard Mater
January 2025
E2Lim - Eau et Environnement Limoges UR 24133, University of Limoges, Limoges, France.
Excess of trace elements (TE) significantly alters the performances of anaerobic digestors (AD). Due to interactions with organic matter in particular, only a small fraction of TE can effectively interact with the biomass. However, assessing the bioavailable fraction of TE remains an issue.
View Article and Find Full Text PDFSci Total Environ
January 2025
Geosciences and Environment Toulouse, Université de Toulouse, CNRS, Université Toulouse 3 Paul Sabatier (UPS), 14 Avenue Edouard Belin, 31400 Toulouse, France; BIO-GEO-CLIM Laboratory, Tomsk State University, 36 Lenin Ave, 634050, Tomsk, Russia. Electronic address:
Copper (Cu) and zinc (Zn) are two trace metals that exhibit both limiting and toxic effects on aquatic microorganisms. However, in contrast to good knowledge of these metal interactions with individual microbial cultures, the biofilm, complex natural consortium of microorganisms, remains poorly understood with respect to its control on Cu and Zn in the aquatic environments. Towards constraining the magnitude and mechanisms of Cu and Zn isotope fractionation in the presence of phototrophic biofilms composed of different proportion of diatoms, green algae and cyanobacteria, we studied long-term growth in a rotating annular bioreactor and quantified the uptake of metals and their isotope fractionation at environmentally-relevant Cu and Zn concentrations.
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