The changes in fatty acid (FA) composition, and total tocopherol content (TTC) of leaves, roots and roots' bark of Cenaurea sp. grown on the Algerian coast were studied. Moreover, the change within the same season in antioxidant activity of lipid fractions was also measured using the DPPH free radical scavenging activity assay. Results showed quantitative and qualitative changes of the contents of saturated, monounsaturated, polyunsaturated fatty acids and TTC from January until June with different patterns for the different plant parts. The highest TTC were obtained for both roots and roots' bark, and changed differently with the month of collection. The antioxidant IC₅₀ values also showed different pattern changes during the season for roots and roots' bark. Cluster analysis using Agglomerative Hierarchical Clustering showed differences in FA amounts for C18:2 and C18:3 between roots’ bark and both roots and leaves parts, which were totally independent of the month of collection.

Cenaurea sp。的叶片，根和根皮中脂肪酸（FA）组成和总生育酚含量（TTC）的变化。对生长在阿尔及利亚沿海的葡萄进行了研究。此外，还使用DPPH自由基清除活性测定法测量了同一季节内脂质部分的抗氧化活性的变化。结果显示，从一月到六月，不同植物部位的饱和，单不饱和，多不饱和脂肪酸和TTC含量发生了数量和质量的变化。根和根的树皮都获得了最高的TTC，并且随着收集月份的变化而变化。抗氧化剂IC ₅₀值在季节中也显示出根部和根部树皮不同的模式变化。使用聚类层次聚类分析法进行的聚类分析表明，根皮与根部和叶部之间的C18：2和C18：3的FA量存在差异，这完全与采集月份无关。