Actividad citotóxica del α-humuleno y del tras-cariofileno de Salvia officinalis en dos líneas celulares tumorales animal y humana

Background: The purpose of the present work is two-fold: the fractionation of Salvia officinalis essential oil and the cytotoxic study of this oil with its fractions “in vitro” tumor cell lines. Materials and Methods: S. officinalis essential oil was obtained by hydrodistillation and fractionated with column chromatography; the essential oil and its fractions were analyzed by gas chromatography (GC) coupled to mass spectrometry (MS). The cytotoxic activity was evaluated in cellular lines of breast cancer MCF-7, colon cancer HCT-116, and murine macrophage RAW264.7 cell lines by the MTT assay. Results: the sub-subfraction F1.1.1 of S. officinalis essential oil containing α-humulene present highest activity on RAW264.7 and HCT-116 with IC50 values of 41.9 and 77.3 μg/ml, respectively. The sub-subfraction F1.2.1 of S. officinalis essential oil with trans-caryophyllene showed less activity on RAW246.7 and HCT-116 with IC50 values of 90.5 and 145.8 μg/ml. Conclusion: This paper suggests that the α-humulene and trans-caryophyllene extracted from S.officinalis essential oil inhibit tumor cell growth.Antecedentes: Este trabajo tiene dos objetivos: el fraccionamiento del aceite esencial de la especie Salvia officinalis y la determinación de la citotoxicidad del mencionado aceite esencial con sus fracciones en líneas celulares tumorales “in vitro”. Material y Métodos: El aceite esencial de Salvia officinalis fue obtenido por hidrodestilación y fraccionado mediante cromatografía en columna; el aceite esencial y sus fracciones fueron analizadas mediante cromatografía de gases (GC) acoplada a espectrometría de masas (MS). La actividad citotóxica fue evaluada en líneas celulares de cáncer de mama MCF-7; cáncer de colon HCT-116 y en macrófago murino. RAW264.7 con el ensayo MTT. Resultados: La sub-subfracción F1.1.1 del aceite esencial de Salvia officinalis que contiene alfa-humuleno presenta la actividad mas acusada frente a las líneas celulares RAW264.7 y HCT-116, con valores de IC50 de 41,9 y de 77,3 μg/ml respectivamente. La sub-subfracción F1.2.1 del aceite esencial de Salvia officinalis con trans-cariofileno, muestra menor actividad sobre células RAW246.7 y HCT-116 con valores de IC50 de 90,5 y 145,8 μg/ml respectivamente. Conclusión: Estos resultados sugieren que el alfa-humuleno y el trans-cariofileno de los extractos del aceite esencial de Salvia officinalis inhiben el crecimiento de células tumorales

آثار الدم المتبقية بالذبائح على الجودة التكنولوجية للحوم الدواجن(pHu)

The objective of this work is to show the effect of residual blood on the quality of chicken meat. Work based on the hypothesis that increasing the concentration of residual blood would explain the observed quality degradation by several authors. Lots of chickens are killed with two different types of slaughter: slaughter without stunning for a maximum flow of blood or bleeding perfect PS, shooting seals slight lead to keep almost all blood from the carcass or bleeding IS flawed. To prove the residual blood factors that are responsible for high pHu level in poultry, this study compares the pHu level in poultry both perfectly and imperfectly bled. At 3˚C storage temperature, the average pHu of perfectly bled poultry was (5.7) which was significantly (P < 0.01) lower than the average pHu of imperfectly bled poultry (6.08). At 7˚C storage temperature, the average pHu of perfectly bled poultry was (6.07) which was significantly (P < 0.05) lower than the average pHu of imperfectly bled one (6.27). We found out the effect of season on the results of pHu measures, so we conducted analysis of pHu in summer and winter. Residual blood of the poultry is responsible for high values of pHu therefore the deterioration of all type of meat quality

Study on antigenotoxic effects of Moroccan medicinal plants and spices using the white/white + somatic assay in Drosophila

The antigenotoxic action of a selection of medicinal plants and spices from Morocco including laurel (Laurus nobilis), rosemary ( Rosmarinus officinalis), verbena (Verbena triphylla), fenugreek (Trigonella foenum-graecum) and nutmeg (Myristica fragrens) was assessed using the eye white/white+ (w/w+) Somatic Mutation and Recombination Test (SMART) assay of Drosophila melanogaster. Methyl methanesulfonate (MMS) was used as a positive mutagenic compound inducing high frequencies of spots in Drosophila larvae. The frequencies of spots per eyes of a treated series are compared to those of its concurrent positive control series using &#967;2- test for evaluation of the antigenotoxic effect. The nutmeg at 1% (w/v) demonstrated a marked decrease in MMS-induced spots with an inhibition rate of 50%. Rosemary, fenugreek seeds and laurel showed different inhibition rates with different level of significance. African Journal of Traditional, Complementary and Alternative Medicines Vol. 3(3) 2006: 22-3

Investigation of the mutagenic and antimutagnic effects of Origanum compactum essential oil and some of its constituent

info:eu-repo/semantics/publishe

Investigation of the mutagenic and antimutagenic effects of Origanum compactum essential oil and some of its constituents

In the present study, the chemical composition of Origanum compactum essential oil was determined by gas chromatography and mass spectrometry, and its mutagenic and antimutagenic activities were investigated by the somatic mutation and recombination test (SMART) in Drosophila melanogaster. No significant increase in the number of somatic mutations was observed with the essential oil tested using both the standard (ST) and high bio-activation (HB) cross. In order to investigate the antimutagenic effect of the essential oil, we have tested the effect on the indirect-acting mutagen urethane (URE), as well as the direct-acting mutagen methyl methanesulfonate (MMS). O. compactum essential oil showed a strong inhibitory effect against URE-induced mutagenicity, especially with the HB cross. However, only a weak inhibitory effect on the mutagenicity induced by MMS was observed. These results suggest that the detected antimutagenicity could be mediated by an inhibitory effect on metabolic activation. The essential oil was fractionated to identify the components responsible of the suppressing effect detected. Seven fractions were obtained: two of them showed the most potent inhibitory effect against URE-induced mutagenicity and were further fractionated. The sub-fractions obtained from the second chromatographic fractionation were tested for their antimutagenic activity, together with carvacrol and thymol. The highest antimutagenic effect obtained with the sub-fractions was similar to the effect of the crude essential oil, as well as to the effect of carvacrol alone. These results suggest the absence of a synergic antimutagenic effect between the components of O. compactum essential oil and indicate that carvacrol was the most active oil component. © 2007 Elsevier B.V. All rights reserved.SCOPUS: ar.jinfo:eu-repo/semantics/publishe