1. Pharmacognosy Department, College of Pharmacy, Cairo University, Kasr El Aini St., Cairo 11562, Egypt
2. Chemistry Department, School of Sciences & Engineering, The American University in Cairo, New Cairo 11835, Egypt
3. Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Al-Azhar University-Gaza, P.O. Box 1277, Gaza 79702, Palestine
4. Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China, 100093
5. Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Abbassia Cairo 11566, Egypt