![]() ![]() "The high energy X-ray beam from the synchrotron acted as a fluorescent microscope, which allowed us to not only see the chromium spots throughout the cell but also to determine whether the spots were chromium(III) or a combination of chromium(III) chromium(V) and chromium(VI)," said Dr Wu, who conducted the study while based at the University of Sydney. The team, led by Professor Peter Lay from the University of Sydney's School of Chemistry and Dr Lindsay Wu, now with UNSW's School of Medical Sciences, travelled near to Chicago to Argonne National Laboratory to perform the experiments in collaboration with colleagues at Argonne's, the Advanced Photon Source, a US Department of Energy Office of Science User Facility that generates ultra-bright, high-energy X-rays. It then created a map of every chemical element contained within the cell using an intense X-ray beam at a facility known as a synchrotron. In the latest study, the Australian research team treated animal fat cells with chromium(III) in the laboratory. ![]() Australia's current National Health and Medical Research Council Nutrient Reference Values, which are currently under review, recommend 25-35 micrograms of chromium daily as an 'adequate intake' for adults. The US National Academy of Sciences has estimated up to 200 micrograms of chromium is a safe and adequate daily dietary intake for adults. Supplements containing chromium are also commonly used for weight loss and body building with some containing up to 500 micrograms per tablet. ![]()
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