Compartmentation of caffeine and related purine alkaloids depends exclusively on the physical chemistry of their vacuolar complex formation with chlorogenic acids

alcaloides alcaloides de la xantina alkaloids amonio fenilalanina liasa biochemistry biochimie biosynthese biosynthesis caffeine cell culture chemical composition coffea arabica composition chimique cultivo de tejidos cultivo in vitro culture de cellule culture de tissu culture in vitro enzyme inhibitors enzymic activity graine in vitro culture inhibidores de enzimas inhibiteur d'enzyme phenolic compounds phenylalanine ammonia lyase rubiaceae seeds semilla tissue culture vacuole vacuoles xanthine alkaloids