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:
Apr. 21, 2015
Filed:
Aug. 24, 2012
Phatthanon Prasitchoke, Bangkok, TH;
Chaya Chandavasu, Bangkok, TH;
Artiwan Shotipruk, Bangkok, TH;
Panatpong Boonnoun, Bangkok, TH;
Phatthanon Prasitchoke, Bangkok, TH;
Chaya Chandavasu, Bangkok, TH;
Artiwan Shotipruk, Bangkok, TH;
Panatpong Boonnoun, Bangkok, TH;
PTT Global Chemical Public Company Limited, Bangkok, TH;
Chulalongkorn University, Bangkok, TH;
Abstract
The present invention provides the new method for extracting lutein from natural materials wherein the said method comprises of modification of natural lutein ester in the natural materials to free lutein and/or low molecular weight lutein ester, extraction of the said natural materials with supercritical fluid at the optimal conditions. The said method yields high amount of crude lutein with high purity due to the mild condition used for extraction. Therefore, no degradation of the desired product is occurred. The crude lutein can be further purified with chromatography in order to obtain the highly purified lutein. The method according to this invention can be applied to the extraction of xanthophylls or others beside lutein.