TY - JOUR ID - 100745 TI - Seasonal Variation in Essential Oil Content, Chemical Composition and Antioxidant Activity of Teucrium polium L. Growing in Mascara (North West of Algeria) JO - Journal of Applied Biotechnology Reports JA - JABR LA - en SN - 2322-1186 AU - Maizi, Yamina AU - Meddah, Boumediene AU - Tir Touil Meddah, Aicha AU - Gabaldon Hernandez, Jose Antonio AD - Laboratory of Bioconversion, Microbiology Engineering and Health Safety (LBGMSS), Faculty of Nature and Life Sciences, University Mustapha Stambouli of Mascara, Mascara, Algeria AD - Laboratory of Recognition and Molecular Encapsulation (REM), Faculty of Health Sciences, Catholic University San Antonio of Murcia, Murcia, Spain Y1 - 2019 PY - 2019 VL - 6 IS - 4 SP - 151 EP - 157 KW - Teucrium polium L KW - Mascara KW - Essential oil KW - Vegetative Stage KW - Flowering Stage KW - Antioxidant DO - 10.29252/JABR.06.04.04 N2 - Introduction: Phytochemicals are one wide class of nutraceuticals found in plants which act as antioxidants. In this research, the essential oil (EO) of Teucrium polium L., Lamiaceae, collected from Mascara province, situated in the Algerian northwestern, where their chemical composition varies according to geographical origin, season variation, and climatic conditions were studied. Materials and Methods: The extraction of EO was performed by hydrodistillation. Then, the chemical compounds were identified by gaz chromatography coupled to a mass spectrometer (GC–MS). In parallel, the antioxidant activity was evaluated using the DPPH test. Results: The yield of the EO of T. polium L. varied during different seasons with the highest in winter season, at vegetative stage (S1), while the same EO (S1) was significantly more efficient as an antioxidant than the EO harvasted at the flowering stage (S2) with IC50 values 3.90±0.05, 16.14±0.15 mg/mL, respectively (P < 0.001). These extracts are predominantly constituted by limonene (29.87%-26.39%), spathulenol (17.24%-13.29%), camphor (0.0%-8.20%), pinocarvone (7.76%-5.60%), tau-cadinol (5.41%-3.67%), pinene oxide (0.0%-4.78%), α-terpineol (0.0%-4.6%), 1-adamantanemethylamine (0.0%-9.80%) and β- myrcene (0.0%-4.02%). Conclusions: The results show that both EOs can be considered as potential sources of natural antioxidants. However, the vegetative stage was the best stage for harvesting the EO of T. polium L. which can be used as an alternative source of synthetic compounds. UR - https://www.biotechrep.ir/article_100745.html L1 - https://www.biotechrep.ir/article_100745_be594c7f297dd97d8aa85cdaf44738ca.pdf ER -