Determination of Tannins of Three Common Acacia Species of Sudan

Table 2

Absorbance of solutions of Acacia species parts after precipitation of tannins with hydrated-hide powder (at 725 nm).

Species	Plant part	Absorbance
		I	II	Average value
Acacia nilotica	Leaves	0.053	0.053	0.053
Acacia seyal	Leaves	0.308	0.309	0.308
Acacia nilotica	Bark	0.239	0.241	0.240
Acacia seyal	Bark	0.273	0.276	0.274
Acacia senegal	Bark	0.340	0.338	0.339
Acacia nilotica	Mature fruits	0.060	0.065	0.063
Acacia nilotica	Immature fruits	0.056	0.056	0.055