The objective of this study is to report the comparative chemical analysis of essential oil (EO) obtained by hydrodistillation (HD) and volatile fraction (VF) detected by headspace solid phase micro-extraction (HS–SPME) isolated from Pulicaria mauritanica using Gas Chromatography–Retention Indices (GC-RI) and GC–Mass Spectrometry (GC-MS) and to evaluate in vitro the antimicrobial activity of P....