ISSN:0254-0223 Vol. 30 (n. 10, 2015) 299 CATHA EDULIS FORSK. (KHAT): ANTIOXIDATIVE ACTIVITIES AND CHEMICAL DIVERSITIES USING HPLC- DAD-MS/MS ANALYSIS OF SOME ETHIOPIAN AND YEMENIS VARIETIES Siddig Ibrahim Abdelwahab 1 , Fouad Abdulrahman Hassan 2,3 , Abdalbasit Adam Mariod 4* , Sadeq Hasan Al-Sheraji 2,3 , Putri Namrima 5 , Manal Mohamed Elhassan Taha 6 , Amin Ismail 2 , Asaad Khalid 1 1 Substance Abuse Research Center, Jazan University, Jazan, Kingdom of Saudi Arabia 2 Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang 43400, Selangor, Malaysia 3 Department of Food Science, Faculty of Agriculture, Ibb University, Yemen 4 Faculty of Sciences and Arts-Alkamil, University of Jeddah, PO BO 110 ALKAMIL 21931, Alkamil- Saudi Arabia 5 Laboratory of Halal Science Research, Universiti Putra Malaysia, UPM Serdang, 43400, Selangor, Malaysia. 6 Medical Research Center, Jazan University, Jazan, Kingdom of Saudi Arabia *The corresponding author mailing address: - Email: siddigroa@yahoo.com