Inhibition percentage of lipoxygenase by essential oils.

<p>Values are expressed as mean values ± standard deviation (n = 3 experiments); %, percentage;</p><p>*, 8 mg/ml in the reaction medium;</p><p>**, 0.4 mg/ml;</p><p>***, 100 µg/ml in the reaction medium;</p><p>A, B, C, D: means followed by the same letter are not significantly different (p>0.05).</p

Time-dependent anti-proliferative activity of EOs after 24, 48 and 72 hours of exposure.

<p>Cells were incubated at IC₅₀ of each EO. a, LNCaP cells; b, PC-3 cells; c, SF-767 cells; d, SF-763 cells. *, p<0.05 compared to 24 hrs of treatment; §, p<0.05 compared to 48 hrs of treatment. Experiments were performed 3 times in octuplets.</p

Anti-radical activity of essential oils by DPPH and ABTS methods.

<p>DPPH, (2,2-diphenyl-1-picrylhydrazyl); ABTS (2,2′-azinobis-[3-ethylbenzothiazoline-6-sulfonic acid]); Values are expressed as mean values ± standard deviation (n = 3 experiments in quadruplicate); DPPH activities is expressed as inhibitory percentage at and ABTS activities are given in mmol TE/g (10⁻³ mol Throlox equivalent/g of extract); Concentrations of the extracts Throlox of 100 µg/mL for DPPH and 1 mg/mL for ABTS used as standard; A, B, C, D: means followed by the same letter are not significantly different (p>0.05).</p

Chromatograms of the various EOs with their major identified compounds.

<p>A) <i>O. basilicum</i>; B) <i>O. americanum</i>; C) <i>H. spicigera</i>; D) <i>L. multiflora</i>; E) <i>A. conizoides</i>; F) <i>A. calmadulensis</i>; G) <i>Z. officinale</i>.</p

Chemical structures of the major compounds found in the analyzed essential oils.

<p>Chemical structures of the major compounds found in the analyzed essential oils.</p

Dose-dependent anti-proliferative activity of purified compounds and their combination with essential oils after 72 hours of exposure on LNCaP and PC-3 cell lines of prostate cancer, and on SF-767 and SF-763 cell lines of glioblastoma.

<p>Experiments were performed 3 times in octuplets.</p

Chemical composition (in %) of essential oils of the seven aromatic plants tested.

<p>rt, retention time (min).</p

Dose-dependent anti-proliferative activity of EOs after 72 hours of exposure.

<p>A LNCaP cells; B) PC-3 cells; C) SF-767 cells; D) SF-763 cells. Experiments were performed 3 times in octuplets.</p