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Molecules 2013, 18(4), 4573-4587; doi:10.3390/molecules18044573
Article

Triacylglyceride, Antioxidant and Antimicrobial Features of Virgin Camellia oleifera, C. reticulata and C. sasanqua Oils

1
, 2
, 3
, 3
, 4
, 1 and 1,*
1 Department of Organic Chemistry, Faculty of Sciences, University of Santiago de Compostela, E-27080 Lugo, Spain 2 CIMO-Mountain Research Center, Agricultural College of Bragança, Polytechnic Institute of Bragança, Campus Santa Apolónia, E 5301-855 Bragança, Portugal 3 Areeiro Phytopathological Station, Pontevedra Deputation, Subida a la Robleda s/n, E36153 Pontevedra, Spain 4 Department of Plant Production, Faculty of Veterinary Sciences, University of Santiago de Compostela, E-27002 Lugo, Spain
* Author to whom correspondence should be addressed.
Received: 13 March 2013 / Revised: 9 April 2013 / Accepted: 15 April 2013 / Published: 18 April 2013
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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.
Keywords: antioxidant potential; antimicrobial activity; Camellia; oil; triacylglyceride antioxidant potential; antimicrobial activity; Camellia; oil; triacylglyceride
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Feás, X.; Estevinho, L.M.; Salinero, C.; Vela, P.; Sainz, M.J.; Vázquez-Tato, M.P.; Seijas, J.A. Triacylglyceride, Antioxidant and Antimicrobial Features of Virgin Camellia oleifera, C. reticulata and C. sasanqua Oils. Molecules 2013, 18, 4573-4587.

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