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Abstract This study was conducted to determine the chemical composition and minerals contents of some plants such as neem (Azadirecta indica, moringa (Moringa oleifera), and empelica (Phyllanthus emblica), and some active compounds such as (phenolic compounds, total phenol and flavonoides) using High Performance Liquid chromatography (HPLC). Determinate of antimicrobial activity of these plants using powder and extract form in some pathogenic microorganism (Staph. aureus, Bacillus. cereus, Salmonella sp, E. coli and Mold &Yeast). Using of different concentrations of these herbs to produce meat product such as beef burger . Sensory evaluation of these products will do to select the best accepted concentration without effect of sensory evaluations. Determination the stability of these herbs during frozen storage at -18 °C for 6 months by determined the fat rancidity as indicator for fat analysis and rancidity. Microbiological quality of beef burger during frozen storage will also determine. |