**4. Conclusions**

Chemical characterization of *Pimenta racemosa* and *Pimenta dioica* leaf and berry E.Os revealed the abundance of oxygenated monoterpenes and phenolics' which are likely to contribute to the oil antimicrobial effect. The strong antimicrobial and antibiofilm activities of both *P. dioica* and *P. racemosa* leaf oils pose them for future incorporation in treatment of MDR *A. baumanii* infections. Our future perspective will focus on designing and characterization of a suitable pharmaceutical nano-formulation containing the *Pimenta* E.Os, to be further up-scaled to be incorporated in antimicrobial and antibiofilm adjuvant therapy after sufficient clinical trials.

**Author Contributions:** Conceptualization, M.A.F., F.R.S. and M.M.I.; methodology, M.A.F., M.M.I., F.R.S., R.S. and S.R.A.; software, M.A.F., F.R.S. and M.M.I.; validation, F.R.S., M.M.I. and R.S.; formal analysis, M.M.I. and F.R.S.; investigation, F.R.S., M.M.I. and R.S.; resources, M.A.F.; data curation, M.A.F., F.R.S, M.M.I. and R.S., writing—original draft preparation, F.R.S., M.M.I., R.S. and S.R.A.; writing—review and editing M.A.F., F.R.S., M.M.I., R.S. and S.R.A.; visualization, M.A.F., F.R.S., M.M.I. and R.S.; supervision, M.A.F.; project administration, M.A.F. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding, this work was supported by Faculty of Pharmacy, Cairo University.

**Acknowledgments:**The authorswouldlike to acknowledgeMona Tawfik Al-Kashef and OmneyaHelmy,Microbiology and Immunology Faculty of Pharmacy, Cairo University, Egypt, who generously donated the clinical bacterial isolates used in this study.

**Conflicts of Interest:** The authors declare no conflict of interest.
