1. Nanobiotechnology and Molecular Biology Research Lab, Dept. of Food Science and Nutrition, College of Food Science and Agriculture, College of Food Science and Agriculture; King Saud Univ; P.O. Box 2455 Riyadh-11451 Saudi Arabia
2. Dept. of Chemistry, College of Science; King Saud Univ; P.O. Box 2455 Riyadh-11451 Saudi Arabia