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Assessment of the antioxidant activities of representative optical and geometric isomers of astaxanthin against singlet oxygen in solution by a spectroscopic approach.

Food Chemistry, 2022
Astaxanthin (AST) is a natural antioxidant and has been widely applied as a food supplement. While astaxanthin has many isomers, there are few studies comparing its physicochemical properties.
Xinxin Zheng, Qing Huang
semanticscholar   +1 more source

Hydrophilic Astaxanthin: PEGylated Astaxanthin Fights Diabetes by Enhancing the Solubility and Oral Absorbability

Journal of Agricultural and Food Chemistry, 2020
To develop hydrophilic astaxanthin with significantly enhanced solubility and stability, astaxanthin polyethylene glycol succinate (APGS) was synthesized by esterification of an astaxanthin succinate diester with polyethylene glycol 1000. The chemical structure of the hydrophilic derivative was confirmed by 1H nuclear magnetic resonance and mass ...
Yanjun Liu   +7 more
openaire   +2 more sources

Biotechnological production of astaxanthin from the microalga Haematococcus pluvialis.

Biotechnology Advances, 2020
Although biotechnologies for astaxanthin production from Haematococcus pluvialis have been developed for decades and many production facilities have been established throughout the world, the production cost is still high.
Xin Li   +8 more
semanticscholar   +1 more source

Astaxanthin in the Cedar Waxwing

Science, 1963
The pigment on the secondary feathers of the cedar waxwing ( Bombycilla cedrorum ) is deposited as an amorphous layer upon a supporting medullary structure. The pigment was extracted with alkali and analyzed by chromatographic and spectrophotometric methods.
A H, Brush, K, Allen
openaire   +2 more sources

Astaxanthin Production from Microalgae

2020
Astaxanthin is commercially sold as a pigment for animal feed and as an antioxidant for the nutraceutical sector. Astaxanthin is predominantly manufactured synthetically from petrochemicals but is also obtained from the chlorophyte Haematococcus pluvialis (Haematococcus lacustris). The petrochemical-derived synthetic alternative has conventionally been
Thomas Butler, Yonatan Golan
openaire   +1 more source

The biosynthesis of astaxanthin

International Journal of Biochemistry, 1970
Abstract A new keto carotenoid was isolated from goldfish ( Carssius auratus ) which was shown to be a 3-hydtoxy-3',4'-diketo-α-carotene. The name α-doradecin is proposed for the keto compound and doradexanthin for the esterified carotenoid, or mono keto compound. The carotenoids β-carotene, letein, α-doradecin, β-doradecin (3-hydroxy-3',4'-diketo-β-
Katayama Teruhisa   +2 more
openaire   +1 more source

Recent advances in biorefinery of astaxanthin from Haematococcus pluvialis.

Bioresource Technology, 2019
Haematococcus pluvialis is one of the most abundant sources of natural astaxanthin as compared to others microorganism. Therefore, it is important to understand the biorefinery of astaxanthin from H.
K. Khoo   +6 more
semanticscholar   +1 more source

ChemInform Abstract: Fluorinated Astaxanthins.

ChemInform, 1998
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
J. LIU, L. U. COLMENARES, R. S. H. LIU
openaire   +1 more source

Astaxanthin

Abstract Astaxanthin is a xanthophyll carotenoid with unique membrane-spanning anti-oxidative and anti-inflammatory activity. It penetrates the blood-retinal barrier to protect ocular tissues, enhance microcirculation, alleviate visual fatigue, and delay age-related macular degeneration. Cardiovascular benefits include reduction of lipid peroxidation,
openaire   +1 more source

Astaxanthin in the American Flamingo

Nature, 1955
THE flamingo, Phoenicopterus ruber, derives from its dietary carotenoids the conspicuous rich pink to red colours of its feathers, tarsal and pedal skin and lower bill-mandible. Captive flamingos gradually lose their rich pigmentation unless appropriate dietary measures are taken. The presumptive role of crustacean carotenoids in supplying pigmentation
openaire   +2 more sources

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