Ozcan Melahat, Ayaz Faik Ahmet, Ozogul Yesim, Glew Robert, Ozogul Fatih
Z Naturforsch C J Biosci. 2016 Mar;71(3-4):45-54. doi: 10.1515/znc-2015-0128.
The fatty acid compositions and total oil contents in achenes of 22 Cirsium taxa collected from different natural habitats in Turkey were investigated. The range of total fat in the taxa varied from 1.7% to 13.3%. The taxa contained palmitic (C16:0), stearic (C18:0), oleic (C18:1n-9), linoleic (C18:2n-6), and α-linolenic (C18:3n-3) acid. Polyunsaturated fatty acids had the highest level, ranging from 52.1% to 75.2% (C18:2n-6) and 0.5%-17.3% (C18:3n-3). Total saturated (6.9%-17.4%), monounsaturated (11.7%-28.9%), and polyunsaturated (57.4%-79.9%) fatty acids varied substantially, whereas total unsaturated fatty acids ranged from 70.6% to 91.3%. Considerable variation was observed (P<0.05) within each taxon for these fatty acids, especially α-linolenic acid (C18:3n-3). Fatty acid compositions of the 22 taxa were compared by cluster analysis (UPGMA) and principle component analysis (PCA) based on six major fatty acids. This is the first report on the lipid content and fatty acid composition of achenes of Cirsium taxa growing in different areas of Turkey. Fatty acid profiles, relative proportions and levels of fatty acids can be used as additional biochemical markers in the taxonomy of Cirsium.
对从土耳其不同自然栖息地采集的22种蓟属植物瘦果中的脂肪酸组成和总油含量进行了研究。这些植物类群中的总脂肪含量范围为1.7%至13.3%。这些类群含有棕榈酸（C16:0）、硬脂酸（C18:0）、油酸（C18:1n-9）、亚油酸（C18:2n-6）和α-亚麻酸（C18:3n-3）。多不饱和脂肪酸含量最高，范围为52.1%至75.2%（C18:2n-6）和0.5%至17.3%（C18:3n-3）。总饱和脂肪酸（6.9%至17.4%）、单不饱和脂肪酸（11.7%至28.9%）和多不饱和脂肪酸（57.4%至79.9%）差异很大，而总不饱和脂肪酸范围为70.6%至91.3%。在每个类群中，这些脂肪酸尤其是α-亚麻酸（C18:3n-3）存在显著差异（P<0.05）。基于六种主要脂肪酸，通过聚类分析（UPGMA）和主成分分析（PCA）对22种类群的脂肪酸组成进行了比较。这是关于生长在土耳其不同地区的蓟属植物瘦果脂质含量和脂肪酸组成的首次报告。脂肪酸谱、脂肪酸的相对比例和含量可作为蓟属分类学中的额外生化标记。
