It has been shown that an exo-galactanase isolated from Bacillus subtilis could catalyse cleavage of galactobiose from the non-reducing end of galactan substrates (Nakano et al., 1990). Buckeridge and Reid (1994) purified an exo-galactanase from L. angustifolius and showed that the enzyme was an important factor involved in depolymerising the dominant galactan component of the cell wall in lupin