11143361066?profile=RESIZE_180x180The authors of a recent article (here – purchase required) report a novel approach to testing vegetable oil species and to identifying adulteration of sesame oil with soyabean oil.  They used excitation-emission matrix (EEM) fluorescence spectroscopy to generate multivariate data sets then tested three chemometric methods to build classification models. Two of the models gave Total Recognition Rates of 100% when presented with unknown samples of pure vegetable oils and of adulterated sesame oil (the lowest % adulteration tested is not specified in the abstract).  The authors conclude that their model can quantify the % adulteration of sesame oil with soyabean oil.

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