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TY - JOUR AU - Amouri, Mohamed Neffati, Ahmed Akrout, Hajer El Jani, Sondes PY - 2009/12/28 Y2 - 2025/12/28 TI - Screening of Antiradical and Antibacterial Activities of Essential Oils of Artemisia campestris L., Artemisia herba alba Asso, & Thymus capitatus Hoff. Et Link. Growing Wild in the Southern of Tunisia JF - Recent Research in Science and Technology JA - RRST VL - 2 IS - 1 SE - Articles DO - UR - https://www.updatepublishing.com/journal/index.php/rrst/article/view/350 SP - AB - <p class="MsoNormal" style="margin: 0in 0in 0pt; text-indent: 0.25in; text-align: justify;"><span style="font-size: small;"><span style="mso-ansi-language: EN-GB;" lang="EN-GB"><span style="font-family: Times New Roman;">The present study was conducted to evaluate in vitro antibacterial and antiradical activities of essential oils extracted from air-dried leaves of <em>Artemisia campestris</em> <em>Artemisia herba alba</em> and <em>Thymus capitatus</em> growing wild in the southern of Tunisia. The principle compounds <em>of Artemisia campestris</em> oil were </span></span><span style="font-family: Symbol; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-char-type: symbol; mso-symbol-font-family: Symbol;" lang="FR"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol;">b</span></span><span style="mso-ansi-language: EN-GB;" lang="EN-GB"><span style="font-family: Times New Roman;">-pinene (45.8%) and </span></span><span style="font-family: Symbol; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-char-type: symbol; mso-symbol-font-family: Symbol;" lang="FR"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol;">a</span></span><span style="font-family: Times New Roman;"><span style="mso-ansi-language: EN-GB;" lang="EN-GB">-pinène (12.5%), the major constituents of <em>Artemisia herba alba</em> oil were </span><span lang="FR">β</span><span style="mso-ansi-language: EN-GB;" lang="EN-GB">-thujone (30.0%) and </span><span lang="FR">α</span><span style="mso-ansi-language: EN-GB;" lang="EN-GB">-thujone (25.7%) whereas the <em>Thymus capitatus</em> oil was mainly composed of <span style="mso-spacerun: yes;"> </span>carvacrol (68.8%) and p-cymène (11.1%). The determination of the antiradical activity by DPPH method showed that <em>Thymus capitatus</em> oil exerted the highest activity with (0.15 µl/ml), followed by <em>Artemisia herba alba</em> (1.0 µl/ml) and <em>Artemisia campestris</em> (2.09 µl/ml). The screening of the antibacterial activity against seven bacteria using the disc diffusion method showed that <em>Thymus capitatus</em> oil strongly inhibited the growth of all bacteria studied (20 - 30 mm) except <em>Pseudomonas aerogunosa</em> which was resistant to all oils. The two other oils exhibited moderate and weak antibacterial activity. These results show and confirm that <em>Thymus capitatus</em> possesses strong antiradical and antibacterial activities, and therefore it could be used as a natural preservative ingredient in food and/or pharmaceutical industries.<strong> </strong></span></span></span></p> ER -