Chemical Fingerprints and Antioxidant Properties of Two Cyperus Species in Burkina Faso
- Chemistry of Natural Compounds , 61 (5) : 873-880
Résumé
Cyperus rotundus L. (Cyperaceae), an unusual plant, is increasingly being incorporated into food and body products in Burkina Faso. This study aims to contribute to improving the knowledge of C. rotundus by chemical composition analysis and biological activity evaluation of extracts. Phenolic content and free radical scavenging activity were determined after the extractions, and essential oil and fatty acid chemical compositions were obtained by GC-MS, while those of hydroalcoholic extracts were determined by LC-MS. Comparative analysis of free radical scavenging properties of extracts from the two Cyperus species showed that the two parameter values of C. rotundus extracts (IC50 = 0.2642 mg/mL) were more than a factor of ten higher than those for C. esculentus L. (Cyperaceae). The main compounds in C. rotundus fatty oil are palmitic acid (16:0) and octadecadienoic acid (18:2-9c, 12c). The main compound of the essential oil of C. rotundus, named cyperotundiol, was identified for the first time. This study provides relevant data concerning the oil’s antioxidant activity and bio-active molecules. These data confirm our commitment to developing improved natural products incorporating Cyperus extracts in various fields.
Mots-clés
Cyperus rotundus, C. esculentus, Phenolic compounds, Essential oil, Fatty oil, Free radical scavenging activity