Fatma Sri Wahyuni1, Daud Ahmad Israf Ali2, Nordin Hj. Lajis3 and Dachriyanus1
1Faculty of Pharmacy, Andalas University, Kampus Limau Manis, Padang, West Sumatra, Indonesia, 25163
2Faculty of Medicine and Health Sciences, University Putra Malaysia 43400 UPM, Serdang, Selangor, Malaysia
3Laboratory of Natural Products, Institute of Bioscience, University Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.