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Value given as mg/ml. Data are means ± SD of three independent experiments. The values with different superscript letters show significantly (p < 0.05) different means. EC: Escherichia Coli; ST: Staphylococcus typhimurium; SE: Staphylococcus epidermis; SA: Staphylococcus aureus; A. flavus: Aspergillus flavus; A. niger: Aspergillus. Niger.