Like other Acacia species, black thorn foliage contains tannins, though the reported tannin content is extremely variable. Condensed tannins have been found to be present either in low amounts (0.2% DM, Osuga et al., 2007), or in much larger quantities: in Sudan, from 1.4% DM in the early dry season (late October) to 5.7% DM in the late dry season (early June) (Fadel Elseed et al., 2002).
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