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Fatty acids of astaxanthin esters in krill determined by mild mass spectrometry
Comparative Biochemistry and Physiology - B Biochemistry and Molecular Biology, 2003Krill is a major source of astaxanthin, which has strong antioxidant activity. Fractions with astaxanthin monoesters and diesters of Antarctic krill Euphausia superba were isolated. Astaxanthin esters were separated by C18-HPLC depending on the number of carbons and double bonds of esterified fatty acid(s). Small amounts of other lipids remained in the
Shinichi Takaichi, Masahisa Nakamura
exaly +3 more sources
Stabilized Nanoemulsions of Astaxanthin Esters of Known Fatty-Acid Composition
Pharmaceutical Chemistry Journal, 2020The aim of the present study was to develop astaxanthin ester nanoemulsions with phosphatidylcholine and evaluate their stability during storage under various conditions. Monoesters were obtained by column chromatography of an oil extract of Haematococcus pluvialis and mixed astaxanthin esters. Monoester fatty-acid compositions were determined by HPLC.
Lotosh N Yu, A A Selishcheva
exaly +2 more sources
Comparative Biochemistry and Physiology - B Biochemistry and Molecular Biology, 2002
The composition of the fatty acids of astaxanthin esters and the distribution of astaxanthin optical RS isomers in the esterified and unesterified astaxanthin fractions extracted from the meal of the pelagic red crab langostilla (Pleuroncodes planipes; Decapoda, Anomura) were determined.
Bjørn Bjerkeng
exaly +3 more sources
The composition of the fatty acids of astaxanthin esters and the distribution of astaxanthin optical RS isomers in the esterified and unesterified astaxanthin fractions extracted from the meal of the pelagic red crab langostilla (Pleuroncodes planipes; Decapoda, Anomura) were determined.
Bjørn Bjerkeng
exaly +3 more sources
Analytical and Bioanalytical Chemistry, 2009
The oily product ZANTHIN consists of natural astaxanthin, which is manufactured from the microalgae Haematococcus pluvialis by supercritical CO(2) extraction. An HPLC method was developed to separate all of the components of the complex astaxanthin extract using a C(30) column.
Albert Klaus, Paul Schüler
exaly +3 more sources
The oily product ZANTHIN consists of natural astaxanthin, which is manufactured from the microalgae Haematococcus pluvialis by supercritical CO(2) extraction. An HPLC method was developed to separate all of the components of the complex astaxanthin extract using a C(30) column.
Albert Klaus, Paul Schüler
exaly +3 more sources
Synthesis of astaxanthin and its esters
2021Stanislav Vitalievich Pechinskii +2 more
exaly +2 more sources
Stability and bioavailability of protein matrix‐encapsulated astaxanthin ester microcapsules
Journal of the Science of Food and Agriculture, 2021AbstractBACKGROUNDAstaxanthin ester derived from Haematococcus pluvialis is often used as a functional and nutritional ingredient in foods. However, its utilization is currently limited as a result of its chemical instability and low bioavailability.
Lu Yang +5 more
openaire +2 more sources
Journal of Agricultural and Food Chemistry, 1998
The reaction kinetics for the hydrolysis of astaxanthin esters and the degradation of astaxanthin during saponification of the pigment extract from the microalga Haematococcus pluvialis were investigated. Different concentrations of sodium hydroxide in methanol were used for the saponification under nitrogen in darkness at ambient temperature (22 ...
Chen, F, Yuan, JP
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The reaction kinetics for the hydrolysis of astaxanthin esters and the degradation of astaxanthin during saponification of the pigment extract from the microalga Haematococcus pluvialis were investigated. Different concentrations of sodium hydroxide in methanol were used for the saponification under nitrogen in darkness at ambient temperature (22 ...
Chen, F, Yuan, JP
openaire +4 more sources
Journal of Separation Science, 2005
AbstractHPLC atmospheric pressure chemical ionization (APCI)/MS, GC MS, HPLC diode array detection (DAD), and NMR were used for the identification of astaxanthin and astaxanthin fatty acid esters in krill (Euphausia superba Dana). Matrix solid phase dispersion was applied for the extraction of the carotenoids.
Marc David, Grynbaum +6 more
openaire +2 more sources
AbstractHPLC atmospheric pressure chemical ionization (APCI)/MS, GC MS, HPLC diode array detection (DAD), and NMR were used for the identification of astaxanthin and astaxanthin fatty acid esters in krill (Euphausia superba Dana). Matrix solid phase dispersion was applied for the extraction of the carotenoids.
Marc David, Grynbaum +6 more
openaire +2 more sources
Synthesis of Lutein and Astaxanthin Esters and Their In Silico Activity
Russian Journal of General Chemistry, 2019Esters of individual natural carotenoids lutein and astaxanthin with benzoic, 4-methylbenzoic, nicotinic, and mandelic acids have been synthesized. The esterification reaction of carotenoids has been carried out in an anhydrous medium at 37°C using of Novozyme 435 biocatalyst.
S. V. Pechinskii +3 more
openaire +1 more source
Journal of the Science of Food and Agriculture, 2020
AbstractBACKGROUNDAstaxanthin (Asta) is widely used in the nutraceutical and food industry because of its strong antioxidant properties. However, natural Asta mainly exists in the esterified form with various fatty acid chains, making it difficult to understand the particular molecular structure of astaxanthin esters (Asta‐Es) that have better ...
Lu Yang +6 more
openaire +2 more sources
AbstractBACKGROUNDAstaxanthin (Asta) is widely used in the nutraceutical and food industry because of its strong antioxidant properties. However, natural Asta mainly exists in the esterified form with various fatty acid chains, making it difficult to understand the particular molecular structure of astaxanthin esters (Asta‐Es) that have better ...
Lu Yang +6 more
openaire +2 more sources