Tocopherols and polyphenols standards, as well as all HPLC grade solvents, were purchased from Sigma–Aldrich (Milano, Italy). Carotenoid standards (violaxanthin, lutein, zeaxanthin, β-cryptoxanthin, and β-carotene) were purchased from Cayman chemicals (Ann Arbor, MI, USA); antheraxanthin was tentatively identified by comparison with retention times and literature UV spectra and quantified by means of lutein standard. Chlorophylls in acetone were purchased from DHI Water & Environment (Copenhagen, Denmark)
β carotene
Manufactured by Cayman Chemical
Sourced in United States
β-carotene is a fat-soluble organic compound that serves as a precursor to vitamin A. It is a type of carotenoid pigment found naturally in plants and some microorganisms.
Automatically generated - may contain errors
2 protocols using β carotene
1
Analysis of Tocopherols, Polyphenols, and Carotenoids
2
Beta Carotene Extraction and Characterization
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Beta Carotene (β-carotene ≥95%, MW= 536.87 g/mol) was purchased from Cayman Chemical (Ann Arbor, MI, USA) and used without further purification. Beta Carotene is known to degrade photochemically. The stock reagent was protected from light and kept at 4 °C. Agave nectar (HoneyTree’s Organic Agave Nectar, MI, USA, 47–56% of fructose and 16–20% of glucose by weight with a remainder of other sugars and water) was obtained from a local grocery store. Lecithin-PC was purchased from NOF Corporation and used without further purification.
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