Production of nigerose, nigerosyl glucose, and nigerosyl maltose by Acremonium sp. S4G13.

A strain of Acremonium sp. S4G13, which produced an enzyme producing nigerose, nigerosyl glucose, and nigerosyl maltose from maltooligosaccharides in high yield, was isolated from soil. From these observations, the enzyme was strongly supposed to be a novel enzyme that hydrolyzed maltooligosaccharides and released glucose, but also transferred the glucosyl moiety into the C-3 or C-4 position of the acceptor molecule by alpha-form in significant amounts.