Okba, M., R. El-Shiekh, M. Abu-Elghait, M. Sobeh, and R. Ashour, "HPLC-PDA-ESI-MS/MS Profiling and Anti-Biofilm Potential of Eucalyptussideroxylon Flowers", Antibiotics, vol. 10, issue 761, 2021.
El-Shiekh, R. A., U. R. Abdelmohsen, H. M. Ashour, and R. M. Ashour, "Novel Antiviral and Antibacterial Activities of .", Antibiotics (Basel, Switzerland), vol. 9, issue 11, 2020. Abstract

(Dyer) Hook.f. (Malvaceae) is an ornamental plant. The aim was to investigate its antimicrobial and antioxidant activities. In vitro antiviral, antibacterial, and antioxidant activities of the 70% ethanolic extract (Et-E) of the aerial parts of the plant were determined. The Dichloromethane Fraction (DCM-F) and the -Butanol Fraction (Bu-F) were assessed using Liquid chromatography-mass spectrometry (LC-MS). The DCM-F showed higher antiviral activities against Coxsackie B4 (CoxB4) viruses (IC = 64.13 µg/mL) and adenoviruses (IC = 54.88 µg/mL) than acyclovir (IC = 72.79 µg/mL for CoxB4 viruses; IC = 91.92 µg/mL for adenoviruses). The DCM-F showed higher anti- activity (MIC = 3.9 µg/mL) than clarithromycin (MIC = 1.95 µg/mL). The DCM-F inhibited Herpes Simplex Virus (HSV) Type I (IC = 29.85 µg/mL) and HSV Type II (IC = 74.17 µg/mL). The Bu-F showed higher anti-mycobacterial activity (MIC = 7.81 µg/mL) than isoniazid (MIC = 0.24 µg/mL) and higher antibacterial activity against (MRSA)(MIC = 7.81 µg/mL) than vancomycin (MIC = 3.9 µg/mL). Antioxidant assays included total antioxidant capacity (TAC), 2,2'-azino-bis-3-ethylbenzthiazoline-6-sulphonic acid (ABTS), 2,2-diphenyl-1-picryl-hydrazyl (DPPH), and iron reducing power. The Bu-F showed the highest antioxidant activity. Chemical profiles were analyzed using HPLC-HR-ESI-MS to identify the metabolites responsible for these biological activities. We identified more than 60 metabolites that belong to anthocyanins, flavonoids, phenolics, terpenes, sterols, and fatty acids. In conclusion, is endowed with metabolites that could be used against viruses and antibiotic-resistant bacteria. They can also be potent antioxidants.

, "Phytochemical profile, enzyme inhibition activity and molecular docking analysis of Feijoa sellowiana O. Berg", Journal of Enzyme Inhibition and Medicinal Chemistry, vol. 36, pp. 618-626, 2021.
Hifnawy, M. S., A. M. K. Mahrous, A. Sleem, and R. M. S. Ashour, "Nutritional and biological evaluation of Phoenix canariensis pollen grains  ", Brazilian Journal of Pharmacognosy, vol. 28, pp. 710-715, 2018.
Ashour, R. M. S., A. A. Elsayed, M. El yamany, and D. Abou-Hussein, "Chemical profile and biological activities of the aerial parts of Senecio acaulis (L.f.) Sch.Bip  ", Pharmacognosy Research , vol. 10, issue 2, 2018.
Hifnawy, M. S., A. M. K. Mahrous, A. A. Sleem, and R. M. S. Ashour, "Comparative chemical and biological studies of leaves and pollens of Phoenix canariensis hort. ex Chabaud", Future Medicinal Chemistry, vol. 9, issue 9, 2017.
Hifnawy, M. S., A. M. K. Mahrou, and R. M. S. Ashour, "Phytochemical investigation of Phoenix canariensis Hort. ex Chabaud leaves and pollen grains", Journal of Applied Pharmaceutical Science, vol. 6, issue 12, pp. 103-109, 2016.
riham omar bakr, mohamed abd-aziz, and rehab seif, phenolic content , radical scavenging activitiy and cytotoxicity of tamarix nilotica ( ehrenb) bunge growing in egypt, , Egypt, Cairo University, 2013.