**4. Conclusions**

This study showed that the peel of *S. mombin* appears to be unique in terms of its volatile composition. The results indicate that the essential oils of different regions showed varying anti-microbial activities against the various food-borne pathogenic bacteria and fungi tested. The highest zone of inhibition was shown against *Staphylococcus aureus* and *Penicillium oxalicum*. On the other hand, the highest number of VCs was identified in peel samples from the Barishal district, whereas the lowest number was in the Dinajpur district samples. On the contrary, the highest number of VCs was found in the Dinajpur district samples, whereas the lowest number was in the Rajshahi district samples. However, the variation in the number of VCs of the samples was very small. Thus, *S. mombin* could become an alternative to synthetic bactericides and fungicides for use in agro-industries. This study provides data for the development of a more economical, useful, and ecofriendly bio-alternative to existing usages of hog plum peels. However, further studies on the safety and toxicity of these oils and their possible in vivo bioactivity should be carried out before use.

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

**Funding:** The authors extend their appreciation to Taif University for funding the current work through the Taif University Research Supporting Project (TURSP-2020/222), Taif University, Taif, Saudi Arabia.

**Institutional Review Board Statement:** Not Applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** Not applicable.

**Acknowledgments:** The authors heartily acknowledge all staff of the Department of Agricultural Chemistry, HSTU, Dinajpur for providing all the necessary facilities to carry out this research work. The authors also extend their appreciation to Abu Rayhan Mohammad Tareq, SSO, Chemistry Division, Atomic Energy Centre, Dhaka-1000, Bangladesh for lab support, and to Taif University for funding the current work through the Taif University Research Supporting Project (TURSP-2020/222), Taif University, Taif, Saudi Arabia.

**Conflicts of Interest:** The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript; or in the decision to publish the results.
