1. Chemistry of Medicinal Plants Department National Research Centre Giza Egypt
2. Department of Natural Compounds Chemistry National Research Centre Giza Egypt
3. Department of Plant Production College of Food and Agriculture Sciences, King Saud University Riyadh Saudi Arabia
4. Department of Botany Faculty of Science, Mansoura University Mansoura Egypt
5. Department of Pharmacognosy Faculty of Pharmacy, Deraya University Minia Egypt
6. Chemistry of Tannins Department National Research Centre Giza Egypt
7. Department of Pharmaceutical Biology Institute of Pharmacy and Biochemistry, University of Mainz Mainz Germany