TY - JOUR AU - Marin, Lucyana C. AU - Cavarsan, Ellen C.M AU - Díaz, Ingrit E.C AU - Paciencia, Mateus L.B AU - Frana, Sergio A AU - Suffredini, Ivana B PY - 2018/04/01 Y2 - 2024/03/28 TI - Analysis of Brazilian Plant Extracts as Potential Source of Antioxidant Natural Products Using Bench-Top Assays JF - Free Radicals and Antioxidants JA - Free Rad. Antiox. VL - 8 IS - 2 SE - Original Article DO - 10.5530/fra.2018.2.18 UR - https://antiox.org/index.php/fra/article/view/56 SP - 120-129 AB - <p><strong>Introduction:</strong> The present work reported the antioxidant and chemical screening of Brazilian plant aqueous and organic extracts. <strong>Methods:</strong> An amount of 895 Brazilian Amazon aqueous and organic plant extracts were tested in thin layer chromatography plates (TLC) using 2, 2-diphenyl-1-picrylhydrazyl (DPPH), β-carotene, Dragendorff’s reagent, Kedde’s reagent, and KOH reagent so as to evaluate antioxidant activity and chemical profiles. Antioxidant and DPPH free radical scavenging activities results were submitted to chi-square analyses. <strong>Results:</strong> Only 8.60% of the extracts showed β-carotene/bleaching response, while 96.09% of the extracts responded as a radical scavenger, alkaloids occurred in 8.0% of the extracts whereas anthraquinones occurred in 0.89% of the extracts and cardenolides in 3.89% of the extracts. <strong>Conclusion:</strong> Present findings described that Amazon plant extracts have a huge potential to be a source of antioxidant compounds to be used in preventive medicine, as well as the chemical screening revealed that their plants can be strategically assessed as a source of alkaloids to be tested in further biological assays.</p> ER -