COMPARATIVE STUDY OF TANNINS OF ACACIA NILOTICA AN INDIGENOUS TANNING MATERIAL IN SUDAN WITH ACACIA MEARNSII

Abstract

Tannins from four indigenous and exotic woody plant species were investigated by different methods with the objectives of comparing and evaluating the potential for commercial utilization. All the three subspecies of Acacia nilotica (garad) which were studied contained more than 10% tannin necessary for commercial interest. The tannins of the Acacia nilotica subspecies were of the hydrolysable- condensed types while that of Acacia mearnsii (wattle) was of the condensed type. All four species contained tannin quantities of commercial interest.