Rahmat, Zaidah, 1) Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor-Bahru, Malaysia; 2) Chemical Management Unit, University Laboratory Management Centre (PPMU),Universiti Teknologi Malaysia, 81310 Johor-Bahru, Malaysia; 3) Institute of Bioproduct Development, Universiti Teknologi Malaysia, 81310 Johor-Bahru, Malaysia, Malaysia