Chemical Composition and In Vitro Antioxidant and Antimicrobial Activities of the Marine Cyanolichen Volatile Compounds.

Volatile compounds from the marine cyanolichen , collected from the Moroccan Atlantic coast, were extracted by hydrodistillation and their putative chemical composition was investigated by gas chromatography coupled to mass spectrometry (GC/MS). Based on the obtained results, volatile compounds (LPVCs) were mainly dominated by sesquiterpenes compounds, where -himachalene, -himachalene, ()-2,4 decadienal and -himachalene were assumed to be the most abundant constituents, with percentage of 37.51%, 11.71%, 8.59% and 7.62%, respectively. LPVCs depicted significant antimicrobial activity against all tested strains ( CCMM B3, DSM 50090, ATCC 8739 and CCMM-L4) with minimum inhibitory concentration (MIC) values within the range of 1.69-13.5 mg/mL. Moreover, this LPVC showed interesting scavenging effects on the 2,2-diphenyl-1-picrylhydrazyl radical with an IC of 0.21 mg/mL. LPVCs could be an approving resource with moderate antimicrobial potential and interesting antioxidant activity for cosmetics and pharmaceutical applications.