School of Life Science, Jilin University, Changchun 130012, China.
Key Laboratory for Molecular Enzymology and Engineering, Jilin University, Ministry of Education, Changchun 130012, China.
Molecules. 2020 Nov 11;25(22):5244. doi: 10.3390/molecules25225244.
Sunflower ( L.) contains active ingredients, such as flavonoids, alkaloids and tannins. Nevertheless, few studies have focused on essential oil from the receptacle of sunflower (SEO). In this work, we investigated the chemical composition and antimicrobial and antioxidant activities of SEO. The yield of SEO was about 0.42% (/) by hydrodistillation. A total of 68 volatile components of SEO were putatively identified by gas chromatography-mass spectrometry (GC-MS). The main constituents of SEO were α-pinene (26.00%), verbenone (7.40%), terpinolene (1.69%) and α-terpineol (1.27%). The minimum inhibitory concentration (MIC) of SEO against and was 0.2 mg/mL. The MIC of SEO against was 3.2 mg/mL. The MIC of SEO against and was 6.4 mg/mL. The results showed that SEO had high antibacterial and antifungal activities. Three different analytical assays (DPPH, ABTS and iron ion reducing ability) were used to determine the antioxidant activities. The results showed that SEO had antioxidant activities. To summarize, the results in this study demonstrate the possibility for the development and application of SEO in potential natural preservatives and medicines due to its excellent antimicrobial and antioxidant activities.
向日葵（L.）含有黄酮类、生物碱和单宁等活性成分。然而，很少有研究关注向日葵托盘中的精油（SEO）。在这项工作中，我们研究了 SEO 的化学成分以及其抗菌和抗氧化活性。通过水蒸馏法，SEO 的产率约为 0.42%（/）。通过气相色谱-质谱联用仪（GC-MS）共鉴定出 SEO 中的 68 种挥发性成分。SEO 的主要成分是α-蒎烯（26.00%）、马鞭草烯酮（7.40%）、萜品烯（1.69%）和α-松油醇（1.27%）。SEO 对 和 的最小抑菌浓度（MIC）均为 0.2mg/mL。SEO 对 的 MIC 为 3.2mg/mL。SEO 对 和 的 MIC 均为 6.4mg/mL。结果表明 SEO 具有较高的抗菌和抗真菌活性。采用三种不同的分析方法（DPPH、ABTS 和铁离子还原能力）测定抗氧化活性。结果表明 SEO 具有抗氧化活性。综上所述，本研究结果表明，由于 SEO 具有良好的抗菌和抗氧化活性，因此它有可能被开发并应用于潜在的天然防腐剂和药物中。
