|1 Evaluation of the toxicity of the essential oils of certain mints grown in the region of Settat (Morocco): Mentha piperita, Mentha pulegium and Mentha spicata against, Sitophilus Granarius, Sitophilus Oryzae and Sitophilus Zeamais, Ayoub AINANE, Fatima KHAMMOUR, M'hammed EL KOUALI, Mohammed TALBI, Adyl OUSSAID, Adil LEMHIDI, Abdelouahed OUSSAID, Tarik AINANE
Essential oils are secondary metabolites produced by plants as a defense against phytophagous pests. These extracts contain complex compounds. The essential oils present many previous works, especially in Morocco. The present work is a continuation of chemical study of the essential oils of some mints grown in the Settat Morocco region: Mentha piperita, Mentha pulegium and Mentha spicata, against insects of cereals: Sitophilus Granarius, Sitophilus Oryzae and Sitophilus Zeamais. Experiments were conducted in the laboratory using different doses of these oils to evaluate the mortality they cause on the adults of the insects tested. The results of the sensitivity showed that the three essential oils of mint had important insecticidal properties against the pests studied. And as a result, they were able to destroy all the insects at a concentration of 2 Î¼l/cm3 for a duration of 24 hours of treatment.
|2 MEASURING THERMAL CONDUCTIVITY OF CERTAIN SOLID INDUSTRIAL WASTE BY BOX METHOD, Hicham LAKRAFLI, Mohamed SENNOUNE, Lamyae LAKRAFLI
This work presents an experimental study of the effect of addition of wood waste, especially Wood shavings (WS) and sawdust (S), on the thermal properties using the box method. The results obtained show a significant decrease in density and thermal conductivity Î» (W/mÂ°C) with an increase in the content of wood waste.
|3 ANTIMICROBIAL AND ANTICANCER ACTIVITIES OF LAMINARIA OCHROLEUCA COLLECTED FROM THE COAST OF EL JADIDA, Nabila BOUJABER, Khadija OUMASKOUR, Omar ASSOBHEI, Samira ETAHIRI
Marine algae are known to produce a wide variety of bioactive secondary metabolites and several compounds have been derived from them for prospective development of novel drugs by the pharmaceutical industries. In this study, Laminaria ochroleuca isolated from Atlantic coast of El Jadida-Morocco, was evaluated for its potential bio activity and for its cytotoxic activity using the test of brine shrimp lethality for larvae and tested on KB cells line (human buccal epidermal carcinoma), K562 cell lines (Human chronic myelocytic leukemia) and HeLa cell lines (Human epitheloid cervix carcinoma). Extracts of the algae selected for the study were prepared using hexane, dichloromethane, dichloromethane/methanol (50:50), methanol and water, and assayed for antibacterial activity against Escherichia coli, Pseudomonas sp., Staphylococcus aureus, Bacillus sp. and Streptococcus faecalis and for antifungal activity against Candida albicans, Candida tropicalis and Cryptococcus neoformans. It was found that dichloromethane/methanol was most effective followed by methanol for the preparation of algal extract with significant antibacterial activities (P=0,05), respectively. Laminaria ochroleuca showed significant cytotoxic activity of 100% inhibition against Artemia salina and an antitumor activity against KB cells lines.
|4 DETERMINATION OF THE CONTENT AND RELEASE OF FORMALDEHYDE FROM A PARTICLE BOARD SAMPLE, Fatima KHAMMOUR, Abdelkbir KENZ, Ayoub AINANE, M'hammed EL KOUALI, Mohammed TALBI, Tarik AINANE
Two analytical methods were used to measure the formaldehyde content (perforator extraction method and gas analysis method) on a particle board sample made from urea formaldehyde resin. The perforator extraction method has a higher formaldehyde content compared to the gas analysis method