Biological and pharmacological activities of essential oils of Ocimum basilicum L. grown with Zn-salicylic acid nano-complex
A greenhouse study was conducted to investigate the impact of different rates of application of Zn-EDTA, salicylic acid (SA) and zinc-salicylic acid nano-complex (n[Zn(SA)2]) on the antioxidant and antimicrobial activities of essential oil (EO) of sweet basil (Ocimum basilicum L.). Sixty-one compounds were detected in the EOs after Zn and SA sources were applied to the plants. GC-MS analysis showed that the main components of the EOs after the treatment were epi-α-Cadinol and trans-α-Bergamotene. The highest amount of epi-α-Cadinol (29.06±1.31%) and trans-α-Bergamotene (11.90±1.1%) in the EO were observed at 0.2% n[Zn(SA)2] treatment. In general, the application of 0.2% n[Zn(SA)2] significantly increased percentages of phenolic and flavonoid compounds of extract. HPLC analysis showed that the predominant phenolic compound after treatments with different Zn and SA sources were rosmarinic acid and quercetin, respectively. The lowest IC50 values for RNS, ROS, TBARS and H2O2, scavenging activities were obtained in EOs of basils which were treated with 0.2% n[Zn(SA)2]. Zinc-salicylic nano-complex was the most effective treatment to inhibit fungal and bacterial growth. Our results are quite encouraging since the Eos of n[Zn(SA)2] treated basil exhibited potent antioxidant effect, antimicrobial activities comparable with synthetic drugs.
Copyright (c) 2020 The Author(s)
This work is licensed under a Creative Commons Attribution 4.0 International License.
From Volume 92 (2019) on, the content of the journal is licensed under the Creative Commons Attribution 4.0 License. Any user is free to share and adapt (remix, transform, build upon) the content as long as the original publication is attributed (authors, title, year, journal, issue, pages) and any changes are labelled.
The copyright of the published work remains with the authors. If you want to use published content beyond what the CC-BY license permits, please contact the corresponding author, whose contact information can be found on the last page of the respective article. In case you want to reproduce content from older issues (before CC BY applied), please contact the corresponding author to ask for permission.