Title:Biological Activities of Zinc Oxide Nanoparticles Green Synthesized Using
the Aqueous Extract of Dracocephalum kotschyi Boiss
Volume: 21
Issue: 4
Author(s): Foroogh Mirzania*, Iraj Salimikia*, Javad Ghasemian Yadegari, Abdolrazagh Marzban, Amirmasoud Firouzi, Alireza Nazarzadeh and Javid Aalaei
Affiliation:
- Razi Herbal Medicines Research Center, Lorestan University of Medical Sciences, Khorramabad, Iran
- Department
of Pharmacognosy, Faculty of Pharmacy, Lorestan University of Medical Sciences, Khorramabad, 381351698, Lorestan
Province, Iran
- Department
of Pharmacognosy, Faculty of Pharmacy, Lorestan University of Medical Sciences, Khorramabad, 381351698, Lorestan
Province, Iran
Keywords:
Zinc oxide nanoparticles, green synthesis, Deracocephalum kotschyi Boiss, antimicrobial properties, Staphylococos aureus, Pseudomonas aeruginosa.
Abstract:
Background: Dracocephalum kotschyi Boiss. is known as a native medicinal plant of Iran.
Objective: In this study, aqueous extract of D. kotschyi was used to synthesize ZnO-NPs. To produce
ZnO-NPs, aerial parts of D. kotschyi were powdered and then macerated for obtaining aqueous extract,
after that, aqueous extract was used to reduse zinc nitrate to ZnO-NPs.
Methods: To confirm nanoparticles synthesis, SEM, TEM, UV-Vis, FTIR, and XRD were used. The
synthesized ZnO-NPs were studied for antimicrobial activities by microdilution method for calculating
MIC and MBC. Analysis of ZnO-NPs confirmed successful synthesis by extract of D. kotschyi.
Results: The sizes of ZnO-NPs were estimated 50-200 nm in diameter. Antibacterial and antifungal
experiments showed potent activities against Staphylococos aureus, Pseudomonas aeruginosa and
Candida albicans. The results of the studies showed that the nanoparticles synthesized with the aqueous
extract of D. kotschyi have a much greater antimicrobial effect than the aqueous extract of D.
kotschyi and zinc nanoparticles, each alone (MIC values 3.7 to 7.5 mg/ml).
Conclusion: The noteworthy point is that the inhibitory rate of synthesized zinc oxide nanoparticles
is higher compared to broad-spectrum antibiotics, such as chloramphenicol (MIC values 15 mg/ml).
Determining the therapeutic and toxic dose of this product for humans requires further investigation
and clinical trials.