ZOULIKHA Kermiche

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ZOULIKHA Kermiche

كرميش زوليخة

zoulikha.kermiche@univ-msila.dz

798431516

  • Departement of Microbiology and biochemistry
  • Faculty of Sciences
  • Grade PHd
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About Me

Domain

Sciences de la Nature et de la Vie

Filiere

Sciences Biologiques

Location

Msila, Msila

Msila, ALGERIA

Code RFIDE

  • 1996-05-02 00:00:00

  • ZOULIKHA Kermiche birthday

  • 2025-04-15
  • 2025-04-15

    Docking Moléculaire

    Workshop animé par le Dr KRID Adel, de l'université des Frères Mentouri-Constantine. Il a porté sur les fondements théoriques et les applications pratiques du docking moléculaire, avec des sessions dédiées à la modélisation, aux outils bioinformatiques, ainsi qu'à l'interprétation des résultats.

    Citation

    Zoulikha KERMICHE , ,(2025-04-15), Docking Moléculaire,Docking Moléculaire,Université Mohamed Boudiaf M'sila

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  • 2025-04-14
  • 2025-04-14

    Biosurfactants et Santé humaine

    Les biosurfactants sont des molécules tensioactives produites par certains micro-organismes (bactéries, levures, et champignons). Leur nature tout comme leur pouvoir tensioactif est fortement dépendant du type de micro-organisme, de l’espèce ainsi que du substrat nutritif disponible pour le développement cellulaire (Chen et al., 2007). Parmi les différents biosurfactants recensés, on trouve aujourd’hui des glycolipides, des lipopeptides, des phospholipides, des lipides neutres, des acides gras ou des lipopolysaccharides Tout comme leurs homologues de synthèse chimique, ils peuvent avoir des propriétés émulsifiantes, moussantes, mouillantes ou encore dispersantes, mais également des propriétés plus spécifiques (propriétés antibiotiques). Certaines de ces propriétés fonctionnelles peuvent, de plus, être conservées dans des conditions extrêmes d’utilisation telles que le pH acide, la température élevée, et la salinité (Meylheuc et al., 2001). Compte tenu de leurs potentialités et de leur innocuité, ils sont aujourd’hui utilisés dans différents domaines d’application tels que l’environnement, l’industrie pétrolière, l’agronomie ou encore la cosmétologie et devraient rapidement trouver leur place dans de nouveaux secteurs d’applications tels que les industries agroalimentaires, pharmaceutiques ou encore le domaine médical.

    Citation

    Zoulikha KERMICHE , ,(2025-04-14), Biosurfactants et Santé humaine,1 er séminaire National en Santé et Sécurité Sanitaire des Aliments,Université Mohamed Boudiaf M'sila

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  • 2024-11-02
  • 2024-11-02

    isolation and screening of bacteria producing biosurfactants

    Biosurfactants are surfactant molecules produced by certain microorganisms (bacteria, yeasts, and fungi). Their nature as well as their surfactant power are strongly dependent on the type of microorganism, the species as well as the nutrient substrate available for cell development. Among the different biosurfactants identified today, we find glycolipids, lipopeptides, phospholipids, neutral lipids, fatty acids or lipopolysaccharides. Just like their chemical synthesis counterparts, they can have emulsifying, foaming, wetting or even dispersing properties, but also more specific properties. Currently, biosurfactants are of great interest in various areas of life thanks to their biodegradability and low toxicity, the objective of this study revolves around the production and characterization of biosurfactants from bacteria isolated from different soil samples, all isolates purified by successive subcultures of well-separated and macroscopically distinct colonies were checked for catalase, oxidase reaction and examined microscopically after gram staining. 24 isolates were screened for biosurfactant production on nutrient agar using the following tests: drop collapse test, oil dispersion test, emulsion stability test (ES%). The drop collapse test is based on the destabilization of an oil droplet by surfactants in a 96-well microplate. The oil dispersion test is based on the dispersing activity of bacteria in a layer of the oil phase. Whereas, the calculation of the emulsification index E24 makes it possible to verify the ability to form an emulsion between a hydrophobic phase and a hydrophilic phase. Only three strain was found to be efficient. key words: biosurfactants, surface tension, screening, isolation, bacteria.

    Citation

    Zoulikha KERMICHE , Mounira ARIECH , ,(2024-11-02), isolation and screening of bacteria producing biosurfactants,The First National Seminar on the VALORISZATION OF MICROBIAL OROGIN PRODUCTS VMOP’24- Université des Frères Mentouri Constantine 1,Université des Frères Mentouri Constantine 1

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  • 2024-06-26
  • 2024-06-26

    contribution of valorization of biosurfactants of bacterial origin

    Biosurfactants are surfactant molecules produced by certain microorganisms (bacteria, yeasts, and fungi). Their nature as well as their surfactant power are strongly dependent on the type of microorganism, the species as well as the nutrient substrate available for cell development (Chen et al., 2007). Among the different biosurfactants identified today, we find glycolipids, lipopeptides, phospholipids, neutral lipids, fatty acids or lipopolysaccharides. Just like their chemical synthesis counterparts, they can have emulsifying, foaming, wetting or even dispersing properties, but also more specific properties (antibiotic properties). Some of these functional properties can, moreover, be preserved under extreme conditions of use such as acidic pH, high temperature, and salinity (Meylheuc et al., 2001). Given their potential and their safety, they are today used in different fields of application such as the environment, the oil industry, agronomy or even cosmetology and should quickly find their place in new sectors. applications such as the food, pharmaceutical and medical industries. The objective of this study revolves around the production and characterization of biosurfactants from bacteria isolated from different samples

    Citation

    Zoulikha KERMICHE , Mounira ARIECH , Abed Arabi: arabi.abed@univ-mosta.dz, ,(2024-06-26), contribution of valorization of biosurfactants of bacterial origin,1 st International Seminar of AgriFood and Industrial Biotechnology ISABI 2024- Université Djilali Bounaama Khemis Miliana,Université Djilali Bounaama Khemis Miliana

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