Department of Chemistry Faculty of Science and Mathematics Sultan Idris Education University Tanjong Malim 35900 Perak Darul Ridzuan Malaysia;
Department of Mechanical and Manufacturing Engineering Faculty of Engineering Universiti Putra Malaysia Serdang 43400 Selangor Malaysia;
Department of Biology Universiti Pendidikan Sultan Idris(UPSI) Tg Malim Perak Malaysia;