College of Science, Sichuan Agricultural University, Ya'an, P. R. China.
Secondary Vocational School of Tongbai County, Nanyang, P. R. China.
Nat Prod Res. 2020 Nov;34(22):3285-3288. doi: 10.1080/14786419.2018.1557177. Epub 2019 Mar 31.
In this study, the chemical composition, antimicrobial and antioxidant activities of essential oils extracted in different months were analysed. Results showed that the essential oil contents of fruits collected in June, July and August were 3.47%, 5.02% and 5.64%, respectively, and contained 13, 17 and 17 components, respectively. Neral and geranial were the main components and accounted for 54.76%. The essential oil extracted from fruits collected in July had the highest antimicrobial activity against , , and , and it was the most effective based on the OH· scavenging activity test. The essential oil extracted from fruits collected in August was the most effective based on the test for DPPH· scavenging activity and ferric reducing antioxidant power. Considering the contents, chemical compositions and antimicrobial and antioxidant activities, the appropriate harvest time for essential oils is from July to August.
本研究分析了不同月份提取的精油的化学成分、抗菌和抗氧化活性。结果表明，6 月、7 月和 8 月采集的果实精油含量分别为 3.47%、5.02%和 5.64%，分别含有 13、17 和 17 种成分。橙花醛和香叶醛是主要成分，分别占 54.76%。7 月采集的果实精油对 、 、 和 的抗菌活性最高，基于 OH·清除活性测试，它是最有效的。8 月采集的果实精油在 DPPH·清除活性和铁还原抗氧化能力测试中效果最佳。考虑到含量、化学成分以及抗菌和抗氧化活性，提取 精油的适宜收获时间为 7 月至 8 月。
