2. Materials and Methods
2.1 Plant materials
K. parviflora rhizomes were bought from a Thai traditional drug store in Songkhla province, Thailand. The voucher specimen is SKP 2061116. The plant material was identified by Assoc. Prof. Dr. Sanan Subhadhirasakul and avoucher specimen is kept at the herbarium of the Faculty ofPharmaceutical Sciences, Prince of Songkla University,Songkhla, Thailand