moataza h. omran microbial biotechnology department, genetic engineering division, national research centre, dokki cairo, egypt; microbial biotechnology department, genetic engineering division, national research centre, dokki cairo, egypt. tel: +20-1223735450, fax: +20-233370931 wael nabil microbial biotechnology department, genetic engineering division, national research centre, dokki cairo, egypt samar s. youssef microbial biotechnology department, genetic engineering division, national research centre, dokki cairo, egypt mervat el-sayed chemistry department, faculty of science, cairo university, dokki cairo, egypt mostafa k. el awady microbial biotechnology department, genetic engineering division, national research centre, dokki cairo, egypt

Ali Khorshidi Ali Soleymani, Gholamreza Badfar Parviz Karimi, zeinab Tardeh,