LAID Benderradji

CHBIRA Salima , CHAREF Abdellatif

Test de germination in vitro et régénération des plantules sous stress salin ches le quinoa (Chenopodium quinoa Willd)

TRIRAT Chaima , LAABIDI Bouchra

Contribution à l'étude des plantes médicinales et leurs utilisations thérapeutiques dans la daira de Ras El Oued et Bordj Ghedir dans la Wilaya de B. B. A.

Benabderrazak Bouzid , Hedjouli moussa

Germination et caractérisation morphologique sous stress salin et hydrique chez deux céréales à paille (Avena sativa L.) et (Hordeum vulgare L.)

Attri Bilal , Attar Naima, Laachache Bassma

Transformation technologique de blé tendre (Triticum aestivum L.) : Analyses physico-chimiques et caractérisation de la farine panifiable

Mimoune Oumayma

Quinoa (Chenopodium quinoa Willd) : Caractérisation chimique, intéret nutritionnel et propriétés pharmacologiques

L'utilisation de l'huile essenteille extraite de l'ail est une méthode de lutte biologique contre certaines maladie fongique.

Citation

Laid BENDERRADJI , roumeissa djerboua , Ibtissam Sanah, Fairouz djeghim, Ali Debbi, Faical Brini, ,(2025-11-27), Potentiel aintifongique de l'huile essentielle de l'ail contre la Zymoseptoria tritici: Une approche naturelle de lutte biologique,Phytobiologie et valorisation des bioressoirces,Université Badji mikhtar-Annaba

Le blé dur est une culture stratégique pour l'agriculture durable en Algérie

Citation

Laid BENDERRADJI , saranarimane mazaoui , Zine El abidine Fellahi, Abdelkader Benbelkacem, Walid Saibi, ,(2025-11-26), Evaluation de la variabilité phénotypique de l'épi chez le blé dur: Un potentiel pour l'agriculture durable et la selection participative,Biotechnologie & Biodiversité: Enjeux de valorisation, conservation et agriculture durable,Université Abbes Laghrour, Khenchela

Description du sujet : Proteases represented 60–65% of the total industrial enzyme market, most of which are alkaline proteases. Most of these find applications in the food industry, in the meat tenderization process, peptide synthesis, for infant formula preparations, detergent formulations, baking and brewing. Objectifs : This study aim was alkaline protease characterization and production from local bacterial strain Halobacillus salinus DZ28. Méthode: In this subject, a new Algerian Gram-positive, rod-shaped, endospore-forming, salt-philic bacteria (DZ28 strain) that overproduce extracellular alkaline proteases have been isolated from salt lake deposits in Lake Oubeira, El Taref. Strain DZ28 was assigned as Halobacillus salinus DZ28 on the basis of phenotypic properties and 16S rDNA gene sequencing (ripotyping). Résultats et discussion : The maximum protease activity registered after 36 hours of incubation in optimized medium at 30° C was 19,000 U / ml in a shaking bottle culture at 160 rpm. The crude extract protease showed optimal activity at 60 ° C temperature and pH 12. It is actively inhibited by PMSF and DIFP, indicating that it belongs to the serine protease family. Interestingly, the crude extract protease was not only very stable to nonionic surfactants and oxidants, but also showed high stability and compatibility with some commercial detergents. It retaining more than 100% of its initial activity after pre-incubation for 1 h at 40°C with ISIS, followed by Pril (98%), Tide (95%) and Dixan (90%). Interestingly, the performance evaluation of the wash revealed that blood stains can be effectively eliminated at a temperature of 40°C for 1 hour with minimal supplementation (500 U/mL). Conclusion : This study represents the initial report of a protease derived from Halobacillus salinus, indicating its potential as a highly promising bioadditive for future applications in detergent formulations. Mots clés : Halobacillus salinus, Protease, detergent, Wash performance.

Citation

Samir MEDJEKAL , MOULOUD Ghadbane , Laid BENDERRADJI , ,(2025-04-15), Identification of a novel protease from Halobacillus salinus strain DZ28 isolated from salt lake sediments in Algeria and their use as detergent bioadditives,Le 1er Séminaire national en Santé et Sécurité sanitaire des aliments,Université Mohamed boudiaf-M'sila

Treatment for oral well-being conditions is costly and ordinarily not a portion of the inclusive well-being scope (UHC), and most low and middle-income nations are incapable of supplying administrations to anticipate and treat oral well-being conditions. Clove, the dried flowering bud of Syzygium aromaticum (L.) is widely used as a spice all over the world for its strong aromatic smell and Clove extracts. Our study aims to assess the impact of clove essential oil on the bacteria responsible for dental caries. The essential oil was extracted by hydro-distillation, and the bacteria were collected from a dentist in Bou-Saâda, then isolated and identified as Streptococcus mutans. The disk diffusion method is then used to assess antibacterial activity. Essential oil yield was 6.08%, antibacterial activity was determined on a Streptococcus mutans (Gram+) bacterial strain, inhibition diameters (inhibitionzone) ranged from 3 mm to 15 mm, minimum inhibitory concentration (MIC) for S.mutans was 0.19. From these results, we can conclude that Syzygium aromaticum clove essential oil exerts antibacterial power in vitro on the bacterial strain studied and may have a better in vivo effect on the incidence of reduced biofilm formation in dental caries.

Citation

Laid BENDERRADJI , Samir MEDJEKAL , Mourad GUETOUACHE , MOULOUD Ghadbane , Issam Seddiki, Slimani Chada Loubna, Mohamed Seghir Zyeneb, Slini Chaima, ,(2025-04-14), Antimictobial avtivity of Syzygium aromaticum essential oil in oral health treatment,Seminaire national en santé et sécurité sanitaire des aliments,Université Mohamed Boudiaf de M'sila