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A research team from the Leibniz Institute for Food Systems Biology at the Technical University of Munich has analyzed the aroma of walnut kernels and deciphered the underlying "odorant code". As the team shows for the first time, the typical walnut aroma is created by the combination of two odorants that are present in the nuts in roughly a one-to-one ratio. The first substance is sotolon, which smells like Maggi Seasoning sauce and which, as a single component, characterizes the aroma of lovage, for example. The second compound is called (2E,4E,6Z)-nona-2,4,6-trienal. It is known from oat flakes and is responsible for the typical odor there. ....

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