partially purified by Sephadex LH-20 column chromatography and characterised by means 

of infrared and ¹³ C NMR specteocopy, and reactions with several functional proup-specific 

reagents. These proanthocyanidin-rich extracts from coffee pulp, obtained also from coffee 

leaves, inhibit the germination in vitro of Hemielia vastatrix race 2 uredospores. Greater 

proanhtocyanidin content was associated with greater potency, and the leaves of Coffea 

arabica, a coffee rust-susceptible species, contained less proanthocyanidins than the leaves 

of a coffee rust-resistant C. canephora.

antifungal activity, coffee rust, Hemileia vastatrix.