Symrise Ag

Claudia Utermöhle

Stefan Brennecke

Vijayanand Chandrasekaran

Johannes Kiefl

Edison Diaz Gomez

Pierre Kurzenne

Martin Heinemeier

Uwe Schaar

Tanja Langner

The present invention relates to a new high-throughput process for reducing impurities in essential oils and extracts (in particular for fragrances, fragrance ingredients, flavours and cosmetic ingredients) under mild conditions. Undesirable natural components such as waxes, but also synthetic materials such as agrochemicals and other environmental pollutants are reduced by using at least one selective nanofiltration membrane. In addition, the present invention relates to a method for reducing coloured components in essential oils to obtain a less coloured or even colourless essential oil, while achieving high re-colouration stability over time. Further, the odour quality is maintained or increased through reduction of undesirable olfactory substances to achieve a purified and higher quality oil.

Cold treatment

The present invention relates to a process for preparing of a food concentrate in which an aqueous starting solution from a foodstuff is concentrated by osmosis with a semi-permeable biomimetic membrane. In addition, the present invention relates to a food concentrate which can be produced by the process according to the invention, a food concentrate which is free of disturbing aroma components with an OAV (odour activity value) ≥1 and which does not contain any solvent additives. Furthermore, the present invention relates to the use of the food concentrates and products comprising the food concentrate according to the invention.

Production of flavor concentrates by osmosis

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Uslar, Germany

Claudia Utermöhle