Abstract: When the suspension cultures of Anisodus acutangulus were sup-plemented with precursors of either phenylalanine, ornithine or hyocyamine, phenylalanine was found to be most effective in promoting both the cell growth and its conversion to scopolamine. The growth rate of the cultures adding phenylalanine as precursor was 50.2% higher than that without phenylalanine and the ratio of conyersion was 4.0%.

Key words: Biotrasformation, Anisodus acutangulus