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The study aimed to investigate the chemical composition and antimicrobial and antioxidant activities of the essential oil from dried seeds of Xylopia aethiopica . The essential oil was obtained by hydrodistillation and analyzed by GC/FID and GC/MS. The essential oil yield was 1.35%. Forty-nine compounds were identified in the essential oil with 1,8-cineole (16.3%), β -pinene (14.8%), trans -pinocarveol (9.1%), myrtenol (8.3%), α -pinene (5.9%), and terpinen-4-ol (5.6%) as major components. The antimicrobial activity of this essential oil was studied using disk diffusion and broth microdilution methods on four bacteria ( Staphylococcus aureus, Enterococcus faecalis, Escherichia coli, and Pseudomonas aeruginosa ) and one fungus (Candida albicans) . The essential oil exhibited excellent activity against S. aureus , E. faecalis , and C. albicans and moderate activity against E. coli . Among all strains tested, C. albicans showed the best sensitivity with a MIC of 50 mg/mL. The antioxidant activity was examined using a DPPH-free radical scavenging assay. The essential oil of X. aethiopica showed low antioxidant activity (IC 50  = 784.604 ± 0.320 mg/mL) compared to that of ascorbic acid and the reference compound (IC 50  = 0.163 ± 0.003 mg/mL). The results indicate that consumption of X. aethiopica seeds can reduce the virulence of food-borne pathogens and their resistance to antibiotics., Competing Interests: The authors declare that there are no conflicts of interest., (Copyright © 2024 Samba Fama Ndoye et al.)

The reaction of benzoyl chloride and ethyl-endi-amine in the presence of potassium thio-cyanate yielded a white solid, C 18 H 18 N 4 O 2 S 2 , which consists of two benzoyl-thio-ureido moieties connected by an ethyl-ene chain. The asymmetric unit consists of one half of the mol-ecule, the complete mol-ecule being generated by crystallographic inversion symmetry. Both thio-urea moieties are in a trans conformation. An intra-molecular N-H⋯O hydrogen bond occurs. In the crystal, C-H⋯S and C-H⋯O hydrogen bonds link the molecules, forming layers parallel to the ac plane.