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Synthetic conditions were evaluated to intercalate norbixin into layered double hydroxides (LDH). Norbixin was isolated from a hydrosoluble commercial annatto extract. LDH samples comprising M 2+ /Al 3+ (M = Mg, Zn) were synthesized by coprecipitation and characterized by X-ray diffraction, thermal analysis coupled to mass spectrometry, vibrational spectroscopies, and solid-state 13 C nuclear magnetic resonance. Radical scavenging activity of LDH hybrids was monitored by electron paramagneticdoi:10.21577/0103-5053.20200065 fatcat:lj6krw7eyndv7ae3hup4g7u6de