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US Patent 6221417 - Conversion of xanthophylls in plant material for use as a food colorant
US Patent Issued on April 24, 2001
Estimated Patent Expiration Date:
November 17, 2018Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
November 17, 2018Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractThis invention relates to the in situ process for converting non-free-form xanthophylls to free xanthophylls in the biological material of the plant. The method, more particularly, relates to a method that would liberate xanthophylls by transesterification of acyl-xanthophylls in plant materials which is used as a natural food colorant. | InventorsApplicationNo. 193667 filed on 11/17/1998US Classes:426/540, Specific dye or pigment per se or compositions containing same8/438, PROCESS OF EXTRACTING OR PURIFYING OF NATURAL DYE8/646, Dye extracted from natural product426/262, PRESERVING OR MODIFYING COLOR BY USE OF DIVERSE ADDITIVE426/270, Plant derived tissue containing other than potato426/541, Containing antioxidant or antioxidant per se426/544Organic active chemical containingField of Search426/262, PRESERVING OR MODIFYING COLOR BY USE OF DIVERSE ADDITIVE426/270, Plant derived tissue containing other than potato426/540, Specific dye or pigment per se or compositions containing same426/541, Containing antioxidant or antioxidant per se426/544, Organic active chemical containing8/438, PROCESS OF EXTRACTING OR PURIFYING OF NATURAL DYE8/646Dye extracted from natural productExaminersPrimary: Bhat, NinaAttorney, Agent or FirmUS Patent References3998753, Water dispersible carotenoid preparations and processes thereofIssued on: 12/21/1976 Inventor: Antoshkiw , et al.4048203, Purification of lutein-fatty acid esters from plant materials Issued on: 09/13/1977 Inventor: Philip4316917, Stable carotenoid solutions Issued on: 02/23/1982 Inventor: Antoshkiw , et al.4522743, Preparation of finely divided pulverulent carotinoid and retinoid compositions Issued on: 06/11/1985 Inventor: Horn , et al.5084292, Processing for preparing flavorings and perfumes based on one or more carotenoids as starting material Issued on: 01/28/1992 Inventor: Van Dort, et al.5180747, Stabilized fat-soluble vitamin compositions Issued on: 01/19/1993 Inventor: Matsuda, et al.5536504, Ultramicroemulsions from spontaneously dispersible concentrates containing xanthophyll esters and having antitumor activity Issued on: 07/16/1996 Inventor: Eugster, et al.5648564Process for the formation, isolation and purification of comestible xanthophyll crystals from plants Issued on: 07/15/1997 Inventor: Ausich, et al. Foreign Patent References
International ClassesA23L 001/27C12C 005/04 |
