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11 résultats
Process for synthesis of (3R,3'R)-zeaxanthin and (3R,3'S;meso)-zeaxanthin from (3R,3'R,6'R)-lutein via (3R)-3',4'-anhydrolutein
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BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention is in the field of organic chemistry. The invention relates to a process for the synthesis of (3R,3'R)-zeaxanthin and (3R,3'S;meso)-zeaxanthin from a dehydration product of (3R,3'R,6'R)-lutein, namely,
Process for synthesis of (3R,3'R,6'R)-lutein and its stereoisomers
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BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention is in the field of organic chemistry. The invention relates to a process for the synthesis of (3R,3'R,6'R)-lutein and its stereoisomers from commercially available (rac)-.alpha.-ionone by a C.sub.15+C.sub.10+C.sub.15 coupling
Composition and methods for inhibiting the progression macular degeneration and promoting healthy vision
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BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention generally relates to methods and compositions to alleviate eye diseases and, more specifically, to improved methods and compositions for the treatment of cataracts and macular degeneration.
2. Description of the Related
Composition and methods for inhibiting the progression macular degeneration and promoting healthy vision
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BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention generally relates to methods and compositions to alleviate eye diseases and, more specifically, to improved methods and compositions for the treatment of cataracts and macular degeneration.
2. Description of the Related
Composition for improving macular pigment density and preventing or treating age-related macular degeneration
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CROSS REFERENCE TO RELATED APPLICATIONS
This application is a national phase application of the PCT international application number PCT/CN2013/000933 titled "Composition Used For Improving Macular Pigment Density In Eyes And Preventing Or Treating Age-related Macular Degeneration", filed in the
Nutritional supplement to treat macular degeneration
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FIELD OF THE INVENTION
The present invention relates to a nutritional or dietary supplement composition that strengthens and promotes retinal health through the prevention, stabilization, reversal and/or treatment of visual acuity loss in people with particular ocular diseases. More specifically,
Pharmaceutically active carotenoids
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The invention related to the use of lutein and zeaxanthin which increase the deposition of macular pigment in the human eye. The invention is particularly but not exclusively concerned with lutein and/or zeaxanthin for use in the treatment by therapy or prophylaxis of disease of the macula and in
Delivery of bioactive, nanoencapsulated antioxidants
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TECHNICAL FIELD
This invention pertains to methods and compositions to enhance the delivery of bioactive lutein or other antioxidants to tissues, and methods to make compositions that are useful for the enhanced delivery of bioactive lutein or other antioxidants to tissues, particularly to the eye
Optical method and apparatus for determining status of agricultural products
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FIELD OF THE INVENTION
The invention relates to the determination of the freshness of agricultural crops, products, and forests, and in particular, to the determination of antioxidant content through optical methods.
BACKGROUND OF THE INVENTION
In plants, carotenoids act as accessory pigments in
Composition and method of manufacture
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TECHNICAL FIELD OF INVENTION
The present invention relates to dietary supplements for improving human health, for example to dietary supplements for reducing a risk of developing macular degeneration, for slowing its progression, and for preventing age-related sight loss as well as other age-related
Process for the preparation of xanthophyll crystals
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This invention relates to a process for the preparation of xanthophyll crystals. This invention particularly relates to a process for the preparation of xanthophyll crystals containing high content of trans-lutein and/or zeaxanthin. This invention more particularly relates to a process for the
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