Chemical screening and antibacterial activity of essential oil and volatile fraction of Dictyopteris polypodioides

Publication date: January 2020Source: Microchemical Journal, Volume 152Author(s): Nacera Riad, Mohamed Reda Zahi, Emanuela Trovato, Naima Bouzidi, Yasmina Daghbouche, Margita Utczás, Luigi Mondello, Mohamed El HattabAbstractThe genus Dictyopteris, comprising 35 species, is known by its characteristic marine fragrances which is mainly associated to aspecific chemical composition. Dictyopteris polypodioides (D. polypodioides), known as Dictyopteris membranacea (D. membranacea), is distributed in several region of the world and characterized by a wide range of bioactive compounds. In the current research, the chemical composition and antibacterial activity of the volatile fraction (VF) and essential oil (EO) of D. polypodioides are reported in a comparative objective. The VF was prepared from the crude ether extract, whereas, the EO was made from the dried alga. The GC/MS analysis of the VF and the EO revealed the presence of 72 and 70 compounds accounting for 86.4% and 80.6% of the total composition respectively. The main constituents in both oils were 3-hexyl-4,5-dithiacycloheptanone and dictyopterene. The antibacterial activity of the VF and the EO were evaluated by liquid-broth dilution method, against six strains including Staphylococcus aureus, Agrobacterium tumefaciens, Salmonella typhimurium, Bacillus cereus, Micrococcus luteus and Escherichia coli. Kanamycin and chloramphenicol were used as antibiotics references.The EO has shown a high inhibitory effect against all th...
Source: Microchemical Journal - Category: Chemistry Source Type: research