All chemicals were used without further treatment. Acetonitrile, methanol, and water, when used for liquid chromatography, were purchased from Merck (Germany) as ultra-performance liquid chromatography-grade. Anhydrous sodium sulfate, sodium carbonate, formic acid, ethanol, ethyl acetate, 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (≥ 98%; ABTS), Folin–Ciocalteu reagent (2M), and 6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid (97%; Trolox®) were purchased from Merck (Germany). Gallic acid was purchased from Carbosynth (UK), astaxanthin, and lutein (90%) from Acros Organics (Thermo Fisher, Germany), and β-carotene (99%) from Alfa Aesar (Thermo Fisher, Germany). The silylation reagent (SILYL-991) was purchased from Macherey-Nagel (Germany).
Astaxanthin
Manufactured by Thermo Fisher Scientific
Sourced in United Kingdom, Belgium
Astaxanthin is a naturally occurring carotenoid pigment produced by various microalgae, bacteria, and yeasts. It is a powerful antioxidant with potential health benefits. Astaxanthin is commonly used in research and laboratory settings to study its properties and potential applications.
Automatically generated - may contain errors
Lab products found in correlation
Lutein, by Thermo Fisher Scientific (1 mentions)
6 hydroxy 2 5 7 8 tetramethylchroman 2 carboxylic acid, by Merck Group (1 mentions)
β carotene, by Thermo Fisher Scientific (1 mentions)
2 2 azino bis 3 ethylbenzothiazoline 6 sulfonic acid, by Merck Group (1 mentions)
2m folin ciocalteu reagent, by Merck Group (1 mentions)
Trolox, by Merck Group (1 mentions)
Acetonitrile, by Merck Group (1 mentions)
Methanol, by Merck Group (1 mentions)
Ethanol, by Merck Group (1 mentions)
Formic acid, by Merck Group (1 mentions)
Ethyl acetate, by Merck Group (1 mentions)
Sodium carbonate, by Merck Group (1 mentions)
Anhydrous sodium sulfate, by Merck Group (1 mentions)
Acetone, by Avantor (1 mentions)
Methanol, by Avantor (1 mentions)
Ethanol, by Avantor (1 mentions)
Zeaxanthin, by Biosynth (1 mentions)
Milli q system, by Merck Group (1 mentions)
β carotene, by Merck Group (1 mentions)
2 protocols using astaxanthin
1
Comprehensive Analytical Protocols for Natural Antioxidants
2
Carotenoid Extraction from Haematococcus pluvialis
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Freeze-dried Haematococcus pluvialis, were kindly provided by Microphyt (Baillargues, France) and stored at 4 °C until use. HPLC-grade solvents including methyl tert-butyl ether (MTBE), methanol, acetone, and ethanol were purchased from VWR (Leuven, Belgium). Sea sand (0.25-0.30 mm particle diameter) was acquired from Panreac (Castellar del Vallés, Spain). Butylated hydroxytoluene (BHT), canthaxanthin and βcarotene (from Anacystis nidulans algae) were obtained from Sigma-Aldrich (St Louis, MO, USA). Lutein (from Echinacea purpurea) was purchased from Chengdu Biopurify Phytochemicals Ltd. (Chengdu, China). Astaxanthin was purchased from Acros Organics (Geel, Belgium), whereas zeaxanthin was acquired from Carbosynth Limited (Berkshire, UK). Ultrapure water used was obtained from a Milli-Q system (Millipore, Billerica, MA, USA). For supercritical antisolvent fractionation experiments, carbon dioxide (99% purity) was supplied by Carburos Metálicos (Barcelona, Spain).
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