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:
Jun. 24, 2008
Filed:
Jan. 30, 2006
Doddabele L. Madhavi, Worcester, MA (US);
Daniel I. Kagan, Belmont, MA (US);
Doddabele L. Madhavi, Worcester, MA (US);
Daniel I. Kagan, Belmont, MA (US);
BioActives, LLC, Belmont, MA (US);
Abstract
A method for concentrating trans-xanthophyll esters from marigold oleoresin, which includes blending the oleoresin with a solvent and a co-solvent of lower alkanols and recovering a precipitate enriched with trans-xanthophyll esters at a temperature of above 22° C. The recovery of the trans-xanthophyll esters is greater when using the alkanol blend than when using only a lower alkanol from the said blend. The said process is most useful using a lower-grade, commercially available oleoresin, thereby helping small producers, who do not have access to higher-grade oleoresin made through backward integration to marigold cultivation and harvest.