title: Triacylglyceride, antioxidant and antimicrobial features of virgin Camellia oleifera, C. reticulata and C. sasanqua Oils.
abstract: Virgin oils obtained from seeds of Camellia oleifera (CO), Camellia reticulata (CR) and Camellia sasanqua (CS) were studied for their triacylglyceride composition, antioxidant and antimicrobial activities. Levels of fatty acids determined by ¹H-nuclear magnetic resonance analysis were similar to those reported for olive oils (82.30%-84.47%; 5.69%-7.78%; 0.26%-0.41% and 8.04%-11.2%, for oleic, linoleic, linolenic and saturated acids, respectively). The CR oil showed the best antioxidant potential in the three in vitro models tested. With regard to EC₅₀ values (µg/mL), the order in DPPH radical-scavenging was CR (33.48) < CO (35.20) < CS (54.87). Effectiveness in reducing power was CR (2.81) < CO (3.09) < CS (5.32). IC₅₀ for LPO inhibition were 0.37, 0.52 and 0.75 µg/mL for CR, CO and CS, respectively. All the oils showed antimicrobial activity, and exhibited different selectivity and MICs for each microorganism tested (E. coli, B. cereus and C. albicans). B. cereus was the less sensitive species (MIC: 52.083 ± 18.042 for CO; 41.667 ± 18.042 for CR; 104.167 ± 36.084 for CS mg/mL) and the E. coli was the most sensitive to camellia oil's effect. The standard gentamicin presented higher MIC for E. coli (4.2) than the CR (MIC= 2.6) and CO (MIC = 3.9) oils.
authors.affiliation: Department of Organic Chemistry, Faculty of Sciences, University of Santiago de Compostela, E-27080 Lugo, Spain.
authors.forename: Xesús
authors.initials: X
authors.lastname: Feás
authors.forename: Leticia M
authors.initials: LM
authors.lastname: Estevinho
authors.forename: Carmen
authors.initials: C
authors.lastname: Salinero
authors.forename: Pilar
authors.initials: P
authors.lastname: Vela
authors.forename: María J
authors.initials: MJ
authors.lastname: Sainz
authors.forename: María Pilar
authors.initials: MP
authors.lastname: Vázquez-Tato
authors.forename: Julio A
authors.initials: JA
authors.lastname: Seijas
mesh_terms: D000890:Anti-Infective Agents / Q000737:chemistry / Q000494:pharmacology*; D000975:Antioxidants / Q000737:chemistry / Q000494:pharmacology*; D028244:Camellia / Q000737:chemistry*; D005227:Fatty Acids / Q000737:chemistry; D020128:Inhibitory Concentration 50; D015227:Lipid Peroxidation / Q000187:drug effects; D008826:Microbial Sensitivity Tests; D019906:Nuclear Magnetic Resonance, Biomolecular; D010084:Oxidation-Reduction / Q000187:drug effects; D010938:Plant Oils / Q000737:chemistry*; D014280:Triglycerides / Q000737:chemistry / Q000494:pharmacology*
chemical_list: D000890:Anti-Infective Agents; D000975:Antioxidants; D005227:Fatty Acids; D010938:Plant Oils; D014280:Triglycerides