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Articles by Mebrouk Kihal
Total Records ( 2 ) for Mebrouk Kihal
  Nora Laref , Bettache Guessas and Mebrouk Kihal
  The effect of abiotic and biotic factors on the antifungal activity was evaluated by overlay assay under different temperatures, pH and on modified MRS (de Man Rogosa Sharpe). Lactic Acid Bacteria (LAB) were able to produce antifungal compounds under different temperatures, in 30°C showed a good inhibition because no conidia was observed; in this temperature all isolates when grown at pH 3 and 4 show a stronger antifungal activity. The best inhibition was done when the glucose was replaced with sorbitol, mannitol and trehalose. The same zone of inhibition in the presence and absence of sodium acetate was detected by all isolates. No inhibition was observed on MRS without meat extract and glucose, although the amount of activity produced does vary depending on the carbon source.
  Nour Eddine Karkachi , Samia Gharbi , Mebrouk Kihal and Jamal Eddine Henni
  Evaluation of the antagonistic activity of three bacterial and a fungi with direct confrontation method and the filtrates culture against the growth of Fusarium oxysporum f.sp. lycopersici showed the inhibition of the mycelia growth of Fusarium oxysporum f.sp. lycopersici with Bacillus cereus energized the low activity and it was more significant with Serratia marcescens and Trichoderma harzianum for the 2nd day but with Pseudomonas fluorescens, it was for the 5th day. The filtrates of culture of these antagonists showed that only Serratia marcescens and Trichoderma sp. have a rate of inhibition which varies between (40-95%) and of (20-30%) with Pseudomonas fluorescens.
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