The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 19, 2006
Filed:
Oct. 29, 2003
Mark Hoffman, Lakeville, MN (US);
David Baugh, Plymouth, MN (US);
Michael Ahern, St. Paul, MN (US);
David Walsh, Hollywood, SC (US);
Mark Hoffman, Lakeville, MN (US);
David Baugh, Plymouth, MN (US);
Michael Ahern, St. Paul, MN (US);
David Walsh, Hollywood, SC (US);
Nu-Tein Co., Inc., St. Paul, MN (US);
AMEC E & C Services Inc, Decatur, GA (US);
Abstract
The present invention provides a process for an industrial scale extraction and purification of xanthophylls (e.g., lutein and zeaxanthin) from plant material (e.g., alfalfa or other leafy green crops having high levels of chlorophyll). The process involves harvesting lutein rich alfalfa, extracting an oleoresin from the alfalfa leaves, saponifying the oleoresin, extracting and extracting lutein using a series of solvent extractions specific for oleoresin obtained from alfalfa or other leafy green plants.