Patents Assigned to Nu-Tein Co., Inc.
  • Isolation of lutein from alfalfa
    Patent number: 7253294
    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.
    Type: Grant
    Filed: August 8, 2006
    Date of Patent: August 7, 2007
    Assignee: Nu-Tein Co., Inc.
    Inventors: Mark Hoffman, David Baugh, Michael Ahern, David Walsh
  • Isolation of lutein from alfalfa
    Patent number: 7109361
    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.
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: September 19, 2006
    Assignees: Nu-Tein Co., Inc., AMEC E & C Services Inc
    Inventors: Mark Hoffman, David Baugh, Michael Ahern, David Walsh