title: Radical scavenging, antioxidant and antimicrobial activities of halophytic species.
abstract: For the first time, both antioxidant and antimicrobial activities are simultaneously reported in halophytic plants, particularly on polar fractions. Chloroformic and methanolic extracts of the halophytes Eryngium maritimum L., Crithmum maritimum L. and Cakile maritima Scop. were tested for their antimicrobial activities against 12 bacterial and yeast strains. In addition, radical scavenging and antioxidant activities were assessed, as well as total phenol contents. Only one bacterial strain (Listeria monocytogenes) was not inhibited by plants extracts, and apolar (chloroformic) fractions were generally more active than polar (methanolic) ones. Eryngium maritimum presented the weakest radical scavenging activity (ABTS IC(50)=0.28 mg ml(-1)), as well as the lowest total phenol content (16.4 mg GAE g(-1) DW). However, the three halophytic species had relatively strong total antioxidant activities (from 32.7 to 48.6 mg ascorbate equivalents g (-1) DW). Consequences on the potential use of these plants in food or cosmetic industry are discussed.
authors.affiliation: Laboratoire d'Ecophysiologie et de Biotechnologie des Halophytes et des Algues Marines, Institut Universitaire Européen de la Mer, Université de Bretagne Occidentale, Technopôle Brest Iroise, 29280 Plouzané, France. laetitia.meot@univ-brest.fr
authors.forename: Laetitia
authors.initials: L
authors.lastname: Meot-Duros
authors.forename: Gaëtan
authors.initials: G
authors.lastname: Le Floch
authors.forename: Christian
authors.initials: C
authors.lastname: Magné
mesh_terms: D000890:Anti-Infective Agents / Q000494:pharmacology*; D000975:Antioxidants / Q000494:pharmacology*; D016166:Free Radical Scavengers / Q000494:pharmacology*; D008826:Microbial Sensitivity Tests
chemical_list: D000890:Anti-Infective Agents; D000975:Antioxidants; D016166:Free Radical Scavengers