<p>This study aimed to assess the biological activities and secondary compound composition from Algerian <i>Crithmum maritimum</i> and, therefore, to better characterize local medicinal plants. The aerial parts were investigated regarding their mineral, antioxidant and essential oil content, and composition. The <i>C. maritimum</i> aerial parts contained high levels of potassium, calcium, manganese, and iron. The phenolic fraction was composed by at least 10 identified hydroxycinnamic acids that exhibited scavenging activity against DPPH and ABTS<sup>+</sup>. Moreover, the <i>C. maritimum</i> essential oil had a strong antimicrobial activity. The essential oil was composed by a least 10 molecules comprising monoterpene hydrocarbons and oxygenated monoterpenes.</p
