Browsing by Author "Merzouk, YAHIAOUI"

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Characterization of endospore-forming bacteria producing extracellular enzymes isolated from the Djurdjura Mountains in Algeria
    (جامعة الوادي - University of Eloued, 2021-06-30) Merzouk, YAHIAOUI; Khelifa, BOUACEb; Katia-Louiza, ASMANI; Sondes, MECHRI; Hamdi, BENDIF; Mohammed, HARIRe; Bassem, JAOUADI
    Biodiversity in mountains in Algeria appears scanty and has not been thoroughly investigated. However, the mountain soil has been shown as an almost entire reserve of novel enzymes with interesting properties for industrial and environmental applications. In the present study, thirty bacterial strains were isolated from the Djurdjura Mountains in Kabylia (Algeria) and were studied for their ability to produce enzymes to be possibly used in biotechnological processes such as amylase, caseinase, and chitinase. The characterization of these isolates was carried out using morphological, physiological, and biochemical characteristics. All the data obtained with regards to the phenotypical properties of the isolates, confirmed that the strains belonged to the Bacillus group. In addition, the 16S rRNA gene of the two retained strains KA15 and LK-DZ15 was also amplified and sequenced. Phylogenetic tree was, afterwards, constructed. The nucleotide sequences and blast analyses confirmed that the KA15 and LK-DZ15 strains were closely related to those of the Bacillus altitudinis (accession n°.: MK874318) and Paenibacillus timonensis (accession n°.: MK734103) strains. The presence of amylases, proteases, and chitinases in KA15 and LK-DZ15 isolates are an indicator of their pivotal application in a variety of biotechnological processes.
  • No Thumbnail Available
    Item
    Ethnobotanical survey of herbal remedies traditionally used in ElHammadia (Southern region of the province of Bordj Bou Arreridj, Algeria)
    (جامعة الوادي - University of Eloued, 2021-06-30) Hamdi, BENDIF; Mohammed, HARIR; Merzouk, YAHIAOUI; Nabila, SOUILAHd; Fatima Zohra, HECHAICHI; Mohamed, DjamelMIAR; Ifriqya, MEDILA
    This work is devoted to the study of medicinal plants in the southern region of BordjBouArreridj (communes of the Daïra of El Hammadia), and their different uses in traditional medecine. A series of surveys were conducted in the study area with inhabitants and herbalists, to acquire more informations about the therapeutic uses of medicinal plants practiced by the local population. The analysis of the results allowed us to identify 78 species belonging to 36 families, the most represented are: Apiaceae (13.92%), Lamiaceae (12.65%), Asteraceae (11.39%) and Liliaceae (5.06%). The most commonly parts used from these plants are respectively: the leaves (34.21%), the stems (17.54%), the fruits (12.28%), the roots (10.52%) and the seeds (8.77%). Medicinal plants are prepared and used as powder, infusion, especially as decoction and poultice. The most used is the decoction. The main common health problem treated are; digestive disorders (29.81%), respiratory disorders (10.55%), skin inflammations (9.17%), urinary inflammations (8.25%), liver diseases (6.88%) and neurologic problems (6.42%). El Hammadia has good ethnobotanical potential of medicinal plants. This study is the first contribution to the ethnobotany of this region. We have gathered from this province some considerable knowledge about local medicinal plants for treating diseases.