Physicochemical Profile of Essential Oil of Daucus carota

Essential oils have a significant antimicrobial activity. These oils can successfully replace the antibiotics. So, the microorganisms show their inefficiencies resistant for the antibiotics. For this reason, we study the physicochemical analysis and antimicrobial activity of the essential oil of Daucus carota. The extraction is done by steam distillation of water which brought us a very significant return of 4.65%. The analysis of the essential oil is performed by GC / MS and has allowed us to identify 32 compounds in the oil of D. carota flowering tops of Bouira. Three of which are in the majority are the α-Pinene (22.3%), the carotol (21.7%) and the limonene (15.8%

Effect of cold and scarification on seeds germination of pistacia atlantica L. for rapid multiplication

This study was carried out to determine the effects of mechanical scarification and cold treatment of seeds at + 4°C before sowing seed of Pistacia atlantica. In these cases, the durations at cold temperature, which have been taken into account, are successively 60, 50, 40, and 30 days. After these periods, the rate of germination and the speed of germination are calculated every 4 days. The rates of germinations concerning the not scarified seeds having undergone a cold treatment lasting 50 days are the most important that is a value of 39% from the 09-05-2010 until the 29-05-2010. The speed germination is maximum that is 89 germinated seeds /4 days. In addition this same rate reaches a maximum of 70%. Concerning the pistachio tree seeds of the atlas treated mechanically with duration of cold treatment at + 4°C during 30 days. For the same category of seed the speed of germination is maximum that is 214 seeds/4 days. Thus the scarification and the 30 days stay are the fastest means which allow to obtain the seedlings of pistachio tree in a rather short tim

Pregnancy Monitoring in Ouled Djellal Ewes by Pregnancy-Associated Glycoprotein and Progesterone Measurements

The aim of the present study was to characterize the plasmatic profiles of pregnancy-associated glycoproteins (PAG) and progesterone during gestation and two weeks postpartum in Ouled Djellal ewes. Twenty-five ewes were sampled weekly after estrus synchronization and natural mating. Concentrations of PAG and progesterone were determined by radioimmunoassay. Two ewes failed to become pregnant. Eighteen females developed normal ongoing pregnancies (12 single and 6 multiple) while 5 others were considered as having abnormal pregnancies. In normal ongoing pregnancies, PAG and progesterone concentrations were significantly influenced by the stage of pregnancy (P < 0.0001) but not by the fetal number. Individual plasmatic profiles were described in three ewes having had embryonic mortalities, in two having suffered fetal losses (at days 66 and 110), and finally in two ewes that had at the same time the presence of one alive and one or two mummified fetuses. Plasmatic concentrations of PAG were lower in ewes presenting simultaneously living and mummified fetuse