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An HPLC‐PAD‐atmospheric pressure chemical ionization‐MS metabolite profiling analysis was conducted on the marine echinoderm Marthasterias glacialis (spiny sea‐star). Bio‐guided purification of the methanolic extract led to the isolation of several carotenoids, namely zeaxanthin, astaxanthin and lutein. These compounds were characterized using both UV–Vis characteristics and MS spectra interpretation...
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