Abstract
It was found that Clostridium acetobutyricum performed the synthesis of oligosaccharides from maltose, lactose and sucrose. The bacterium also synthesized enzymatically several riboflavinylglycosides, having the same Rf values with those isolated by us with As pergillus oryzas. The mechanism of oligosaccharide formation seems to proceed in the following steps, as was already proposed by us in Aspergillus oryzas : B_2-G+G→B_2-GG→B_2+CG B_2-GG+G→B_2-GGG→B_2+GGG
