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Item Epidermal anatomic characterization of spontaneous plants belonging to Poaceae, Cistaceae and Boraginaceae families in Algerian northern sahara(University of Eloued جامعة الوادي, 2018-06-01) SLIMANI, Noureddine; MAHBOUB, Nasma; CHEHMA, Abdelmadjid; HUGUENIN, Johann; BARIR, Asma; BEZZA, Imane FatmaMicroscopic examination of the epidermis of wild plants contained in the feces of the dromedary and ruminants is one of the methods for studying the animal diet. This work is a step to elaborate a reference catalog of epidermis to determinate the diet of camel and ruminants in the Saharan rang land situated in Algerian northern Sahara. In this paper, we described the most important epidermal anatomical characteristics of spontaneous perennial plants and ephemeral (08 species and 03families) grazed on Saharan rang land, by using an binocular light microscope. From the results, we propose an identification key to these 08 species from their epidermal characters.Item Floristic diversity of Saharan wetlands in the region of Oued Righ, northeastern Sahara of Algeria(University of Eloued جامعة الوادي, 2018-06-01) HALIS, Youcef; BENHADDYA, Mohammed Lamine; Khellou, Mayada; Hadjoudj, Moussa; Benhania, AmelThe main objective of this study was to investigate the floristic composition and the vegetation structure of different Saharan wetlands in the region of Oued Righ. Six (6) Saharan wetlands were examined; the Lake of Merjaja, Lake of Megarine, Lake of Sidi Slimane, lake of Ayata, Lake Ain Zerga, and Oued Khrouf. A total of 25 stands were investigated using the quadrat method, with five stands for each wetland. The different vegetation parameters, such as cover, frequency and density were calculated. A total of 24 plant species belonging to 20 genera and 13 families were identified. Chenopodiaceae was the predominant family with 6 species. The majority of the species were of Saharo-Arabian distribution. Chemaephytes had the highest contribution to the life forms spectra. The potential role of the halophyte species is discussed. These results might contribute to a better understanding of the functions, requirements, and sensitivities of these ecosystems.Item Therapeutic aptitude of fermented camel milk: case of antimicrobial activity of whey proteins(University of Eloued جامعة الوادي, 2018-06-01) MOSBAH, Said; BOUDJENAH-HAROUN, Saliha; EDDOUD, Amar; BOUAL, ZakariaThe objective Whey proteins (WP) are highly functional elements containing bioactive peptides. The aim of this study is to evaluate the effect of spontaneous fermentation on the antimicrobial activity of WP in camel milk. Samples of the milk are analyzed in the raw state and after the fermentation. The pH and acidity are determined as well as the enumeration of lactic acid bacteria (LAB). The antimicrobial activity was carried out by the agar well diffusion assay, adapting the good method. The results shows that the fermentation process has shown that the pH value is decreasing and LAB show a significant increase during fermentation. The antimicrobial activity gave a very significant difference between fermented camel whey proteins (FCWP) and raw camel whey proteins (RCWP). Then the FCWP gives a zone inhibition (ZI) of 17, 16.5, 13.25 and 10.5 mm respectively for S. aureus, P. aeruginosa, K. pneumoniae and E. coli. In addition, the RCWP gives a ZI of 16, 9.5 mm respectively for S. aureus and P. aeruginosa, and 0 mm for K. pneumoniae and E. coli. These results indicate that the fermentation process induced by the development of LAB favors the proteolysis of WP, which increases the antimicrobial activity.Item Investigation of the Oxidative Stress markers in salivary, serum and erythrocyte ofEl-Oued (Algeria) Diabetic Patients(University of Eloued جامعة الوادي, 2018-06-01) DEROUICHE, Samir; HABITA, Asma; DEGACHI, Ouidad; NECIB, Maroua; CHETEHOUNA, RoumaissaThe aim of this study was to evaluate the state of oxidative stress during diabetes in El-Oued (Algeria) patients. The experimentation is carried out on 72 voluntary individuals were divided into three groups. The first group of healthy individuals (controls), the second group diabetic type 1and the third group diabetic type 2, on which we measured some biochemical parameters on serum, erythrocytes and saliva. The Results showed a significant decrease in serum uric acid concentration in diabetics type 1 (10.78%) and diabetics type 2 (26.83%) and a significant decrease (p <0.05)in erythrocytes GSH in both types of diabetes compared to controls. On the other hand, there was a significant increase (p <0.05) in serum and salivary peroxidation lipidique (MDA) in type 1 and 2 diabetics compared to non-diabetics. In addition, a significant correlation (p <0.05) between serum and salivary MDA in type 1 diabetics (R2 = 0.750) and type 2 diabetics (R2 = 0.768) was shown in this study. In conclusion the present study reveals that diabetes induces an imbalance of oxidant / antioxidant status at serum, erythrocyte and salivary level and that salivary MDA is a good indicator of the state of oxidative stress in diabetes.Item Influence of culture media on the production of antibacterial compounds by Streptomyces sp. PAL114 isolated from palm grove soil in Ghardaïa(University of Eloued جامعة الوادي, 2018-06-01) Tata, Samira; Yekkour, Amine; Chaouch, Fawzia Chaabane; Bouras, Noureddine; Sabaou, NasserdineA Saharan actinobacterium, PAL114, isolated from Ghardaïa (Algeria), showed an important antibacterial activity against various pathogenic bacteria tested on different culture media. The results showed that the highest antibacterial activity was obtained after 7 days of growth. The Bennett medium was found to be the best medium for optimal growth and antibiotic production. The secondary metabolites were detected by reverse-phase HPLC using a C18 column and the fractions corresponding to peaks were collected, concentrated then tested against Listeria monocytogenes ATCC 13932 to detect the active fractions.