title: Fatty acids, essential oil and phenolics composition of Silybum marianum seeds and their antioxidant activities.
abstract: The presentstudydescribes the biochemical evaluation of Silybum marianum seed. The analysis of essential oil composition of Silybum marianum seed by Gas Chromatography-Mass Spectrometry GC-MS showed the presence of14 volatile components with the predominance of γ-cadinene (49.8%) and α-pinene (24.5%). Whereas, the analysis of fatty acids composition, showed the predominance of linoleic (50.5%) and oleic (30.2%) acids. Silybum marainum presented also an important polyphenol contents with 29mgGAE/g DW, a good antiradical activity (CI(50)=39μg/ml) but a lower reducing power ability. Flavonoid and condensed tannin contents were about 3.39mg EC/g DW and 1.8mg EC/gDW, respectively. The main phenolic compounds identified by RP-HPLC, were silybin A (12.2%), silybin B (17.67%), isosilybin A (21.9%), isosilybin B (12.8%), silychristin (7.9%) andsilydianin (7.5%).
authors.affiliation: Institut Supérieur de Biotechnologie de Béja, Université de Jendouba, Tunisia / Laboratoire des Plantes Extrémophiles, centre de biotechnologie, Technopole de BorjCedria, Tunisia.
authors.forename: Baya
authors.initials: B
authors.lastname: Mhamdi
authors.affiliation: Institut Supérieur de Biotechnologie de Béja, Université de Jendouba, Tunisia / Ecole Supérieure des Sciences et Techniques de la santé de Monastir. Université Monastir, Tunisia.
authors.forename: Feten
authors.initials: F
authors.lastname: Abbassi
authors.affiliation: Laboratoire des Plantes Extrémophiles, centre de biotechnologie, Technopole de BorjCedria, Tunisia.
authors.forename: Abderrazak
authors.initials: A
authors.lastname: Smaoui
authors.affiliation: Laboratoire des Plantes Extrémophiles, centre de biotechnologie, Technopole de BorjCedria, Tunisia.
authors.forename: Chedly
authors.initials: C
authors.lastname: Abdelly
authors.affiliation: Unité des Plantes Aromatiques et Médicinales, Centre de Biotechnologie, Technopole de BorjCedria.
authors.forename: Brahim
authors.initials: B
authors.lastname: Marzouk
mesh_terms: D000975:Antioxidants / Q000302:isolation & purification / Q000494:pharmacology*; D001713:Biphenyl Compounds / Q000737:chemistry; D002851:Chromatography, High Pressure Liquid; D056148:Chromatography, Reverse-Phase; D005227:Fatty Acids / Q000302:isolation & purification / Q000494:pharmacology*; D008401:Gas Chromatography-Mass Spectrometry; D020944:Silybum marianum / Q000737:chemistry*; D009822:Oils, Volatile / Q000302:isolation & purification / Q000494:pharmacology*; D010084:Oxidation-Reduction; D010636:Phenols / Q000302:isolation & purification / Q000494:pharmacology*; D008517:Phytotherapy; D010851:Picrates / Q000737:chemistry; D010936:Plant Extracts / Q000302:isolation & purification / Q000494:pharmacology*; D010938:Plant Oils / Q000302:isolation & purification / Q000494:pharmacology*; D010946:Plants, Medicinal; D012639:Seeds
chemical_list: D000975:Antioxidants; D001713:Biphenyl Compounds; D005227:Fatty Acids; D009822:Oils, Volatile; D010636:Phenols; D010851:Picrates; D010936:Plant Extracts; D010938:Plant Oils; C004931:1,1-diphenyl-2-picrylhydrazyl