Browsing by Author "Boumerdassi, Hanane"

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    Contribution à l'utilisation de la farine de caroube (Ceratonia siliqua) en biscuiterie de l'unité Sarl SOBCO
    (Université M'Hamed Bougara Boumerdès: Faculté de Technologie, 2022) Boumerdassi, Hanane; Touati, Maroua; Benmalek, Nabila(Promoteur)
    Dans cette etude contribue a la valorisation du Caroubier (Ceratonia siliqua L),en substituant le cacao utilise en biscuiterie Sarl SOBCO par la farine des pulpes de caroube.La farine des pulpes de caroube se caracterisait par une faible acidite,le pH des extraits aqueux varie de 5,2 a 7,28, l'humidite de la farine est de 11,36% et la teneur en cendres est de2,4%, cette farine est riche en calcium (500mg/100g) et en potassium (590mg/100g) et pauvre en sodium (20 mg/100g).L'etude de l'influence de la temperature et le temps de torrefaction sur la qualite de la farine torrefiee a montre que les absorbances a 294 et 420 nm augmentent en fonction de la temperature et le temps de torrefaction.La teneur en polyphenols totaux et les activites antioxydantes des farines torrefiees ont aussi augmente en fonction du temps et de la temperature de torrefaction.Une creme de fourrage des biscuits a ete elaboree en substituant partiellement le cacao et le sucre par la farine torrefiee et a differentes tailles de granules.Les resultats du test sensoriel analyses par la methode Kramer ont montre que la creme elaboree par la farine fine est la plus appreciee par les panelistes notamment sa texture,sa couleur et son gout chocolate.La substitution du cacao par la farine fine de caroube torrefiee a ete aussi essayee pour l'elaboration des biscuits.L'analyse de la texture de ces biscuits a montre que le temps de cuisson doit etre optimise.
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    Multidrug-resistant opportunistic and pathogenic bacteria contaminate Algerian banknotes currency
    (2020) Djouadi, Lydia Neila; Guezlane-Tebibel, Nadjet; Mansouri, Kenza; Boumerdassi, Hanane; KARIM ARAB, KARIM ARAB; Fardeau, Marie-Laure; Nateche, Farida
    Currency is one of the most exchanged items in human communities as it is used daily in exchange for goods and services. It is handled by persons with different hygiene standards and can transit in different environments. Hence, money can constitute a reservoir for different types of human pathogens. This study aimed to evaluate the potential of Algerian banknotes to shelter opportunistic pathogenic and multiresistant bacteria. To that end, 200 circulating notes of four different denominations were collected from various places and analyzed for their bacterial loads and contents. Besides, predominant strains were identified and characterized by biochemical and molecular methods, and their resistance profiles against 34 antibiotics were determined. Our results indicated that 100% of the studied banknotes were contaminated with bacteria. The total bacterial concentrations were relatively high, and different bacterial groups were grown, showing important diversity. In total, 48 predominant strains were identified as belonging to 17 genera. Staphylococcus and Micrococcus were the most prevalent genera, followed by Bacillus, Pseudomonas, and Acinetobacter. Antibiotic susceptibility testing showed that all the isolates harbored resistance to at least two molecules, and worrying resistance levels were observed. These findings prove that Algerian currency harbors opportunistic multiresistant bacteria and could potentially act as a vehicle for the spread of bacterial diseases and as a reservoir for antibiotic resistance genes among the community. Therefore, no cash payment systems should be developed and generalized to minimize cash handling and subsequent potential health risks