A. lavenia was collected from Bogor, West Java, Indonesia. 11αOH-KA, isolated from A. lavenia leaves with a purity of >95%, judging from the NMR spectra in Gifu University [4], was dissolved in dimethyl sulfoxide (DMSO). Briefly, a dried powder (100 g) obtained from A. lavenia leaves was soaked in distilled water 1:30 (w/v) at 55 °C for 12 h. The water-soluble fraction (A. lavenia water fraction) was recovered after filtration with coffee filtrates, and 11αOH-KA was purified by chloroform extraction (A. lavenia chloroform fraction) followed by silica gel chromatography. 11αOH-KA was recovered as crystals.
Do you have any questions about this protocol?
Post your question to gather feedback from the community. We will also invite the authors of this article to respond.