Patent · US Expired

Process for the extraction of natural carotenoid dyes

US5789647A · kind A · utility

12Cited by

2References

18Claims

0Family size

Assignee

SKW Trostberg Aktiengesellschaft · DE

Inventors

Jurgen Heidlas · Trostberg, DE
Jan Cully · Garching bei München, DE
Johann Wiesmuller · Garching bei München, DE
Heinz-Rudiger Vollbrecht · Cham, DE

Key dates

Filing date	Feb 19, 1997
Grant date	Aug 4, 1998
Priority date	—
Expiry date	Feb 19, 2017

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09B61/00
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A process for the extraction of carotenoid dyes from pre-dried natural starting materials is described using compressed gases such as propane and/or butane in which organic entraining agents can be additionally added in order to facilitate and complete the extraction process. With the aid of this process highly concentrated carotenoid dyes are obtained in high yield.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.