Symrise Ag

Jens Michael Hilmer

Jakob Peter Ley

Gerhard Krammer

Uwe Bornscheuer

Johannes Kiefl

Stefan Brennecke

Thomas Scheper

Egon Gross

Dominik Winkler

Maren Thomsen

Mechthild Gall

Christin Peters

Patrick Jonczyk

Sascha Beutel

Alexander Kindel

The present invention relates primarily to a method for obtaining a volatile fraction from a juice and/or an alcohol-containing beverage, comprising or consisting of the following steps: (a) distilling a mixture of substances from the juice and/or the alcohol-containing beverage, wherein the distillation is performed by a spinning cone column; (b) contacting the mixture of substances from step (a) with a sorbent to obtain a loaded sorbent; and (c) contacting the loaded sorbent from step (b) with a liquid desorbent to obtain the volatile fraction, wherein desired ingredients of the volatile fraction are concentrated as compared to the juice and/or alcohol-containing beverage such that an addition of 0.1% by mass or less of the volatile fraction to any food preparation produces a perceptible odor impression and/or taste impression in a test subject.

Obtaining a volatile fraction from juices or alcoholic beverages

A method for production of a dihydrochalcone, especially of phloretin, using a transgenic microorganism, containing a nucleic acid section (a), comprising or consisting of a gene coding for a bacterial chalcone isomerase, and/or a nucleic acid section (a'), comprising or consisting of a gene coding for a plant chalcone isomerase, and a nucleic acid section (b), comprising or consisting of a gene coding for a bacterial enoate reductase, corresponding transgenic microorganisms, containing a nucleic acid section (a), comprising or consisting of a gene coding for a bacterial chalcone isomerase, and/or a nucleic acid section (a&#x2032;), comprising or consisting of a gene coding for a plant chalcone isomerase, and/or a nucleic acid section (b), comprising or consisting of a gene coding for a bacterial enoate reductase, and host cells, containing one or more identical or different such vectors.

Method for biotechnological production of dihydrochalcones

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Holzminden, Germany

Jens Michael Hilmer