公开(公告)号：US20220228085A1

公开(公告)日：2022-07-21

申请号：US17611886

申请日：2019-05-17

Applicant: SYMRISE AG

Inventor： Bernd Hoelscher ,  Vijayanand Chandrasekaran ,  Johannes Panten ,  Tobias Voessing

IPC: C11B9/00 ,  C11D3/50 ,  C11D3/20 ,  A61K8/37 ,  A61Q13/00 ,  C07C69/593 ,  C07C67/08 ,  C07C67/333

Abstract: Fragrance or flavour mixtures containing (i) (E)-2-methyl-but-2-endicarboxylic acid diesters, (ii) (Z)-2-methyl-but-2-endicarboxylic acid diesters and (iii) 2-methylenebutanedicarboxylic acid diesters with a fruity, pear-like note are provided. Further provided are a process for the preparation of these fragrances or flavourings or fragrance or flavouring mixtures, and the use of the fragrance or flavouring mixtures to produce a fruity, pear-like fragrance or flavour or for the preparation of a fragrance mixture or a perfume oil, cosmetic agent, application agent, detergent and cleaning agent, foodstuff, animal feed or pharmaceutical product, as well as the products made therefrom which contain the fragrance or flavouring mixtures in a sensory effective amount.

公开(公告)号：US20210122995A1

公开(公告)日：2021-04-29

申请号：US16635680

申请日：2017-08-01

Applicant: SYMRISE AG

Inventor： Vijayanand Chandrasekaran ,  Stefan Brennecke ,  Uwe Schaar ,  Edison Diaz Gomez ,  Claudia Utermöhle ,  Pierre Kurzenne

IPC: C11B9/02 ,  B01D61/02 ,  B01D69/12 ,  B01D71/70 ,  B01D69/02 ,  B01D69/10 ,  A23L27/12 ,  A23L5/40 ,  A61K8/92 ,  A61Q13/00 ,  A61Q19/10

Abstract: 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.