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Trehalose is used as food additive as cryopreservant because it is less sweet than sucrose at low concentrations. Since it has always been present, the linkage to mutant epidemic could be a statistical serendipity (remember glyphosate and autism) since it is widely used in microorganism growth, to allow lyophylization, without reported contamination with mutant bacteria. As a RSC member I expect Chemistry World to correct the errors in the note...