Department of Biology, Science Faculty, Selcuk University, Konya, Turkey.
Food Chem. 2013 Nov 1;141(1):91-7. doi: 10.1016/j.foodchem.2013.02.092. Epub 2013 Mar 7.
This paper focused on the assessment of antioxidant property and fatty acid composition of four Centaurea species. The antioxidant activity of its methanol extract was evaluated by several in vitro experiments including phosphomolybedum assay, DPPH assay, β-carotene/linoleic acid, ferric and cupric reducing power. Total phenolic and flavonoid contents were also evaluated. The methanol extract of Centaurea pulcherrima var. pulcherrima showed the superior free radical scavenging activity, linoleic acid inhibition capacity, reducing power and also had the highest total phenolic content. A significant relationship between antioxidant capacity and total phenolic components was found. The oils of Centaurea taxa were also analysed for fatty acid concentration by gas chromatography. The principal fatty acids in the species were palmitic acid (23.38-30.49%) and linoleic acid (20.19-29.93%). These findings suggest that the Centaurea species could be used as a potential source of new natural antioxidants and unsaturated fatty acids in food industry, cosmetics and pharmaceutical preparations.
本文主要研究了四种蓝蓟属植物的抗氧化性能和脂肪酸组成。采用磷钼酸盐法、DPPH 法、β-胡萝卜素/亚油酸法、铁还原和铜还原能力等几种体外实验评估了其甲醇提取物的抗氧化活性。还评估了总酚和类黄酮的含量。天蓝蓟变种天蓝蓟的甲醇提取物表现出优越的自由基清除活性、亚油酸抑制能力、还原能力，且总酚含量最高。发现抗氧化能力与总酚成分之间存在显著关系。通过气相色谱法分析了蓝蓟属植物的油脂中脂肪酸的浓度。这些物种中的主要脂肪酸是棕榈酸（23.38-30.49%）和亚油酸（20.19-29.93%）。这些发现表明，蓝蓟属植物可以作为食品工业、化妆品和药物制剂中新的天然抗氧化剂和不饱和脂肪酸的潜在来源。
