Abstract
Experiments on the formation of riboflavin-α-glucoside from maltose and riboflavin were carried out with various strains of Aspergillus, Mucor, Penicillium and Rhizopus. It was observed that each bran culture extract of the molds Aspergillus awamori, A. kawachii, A. niger, A. saitoi, A. usamii and Mucor javanicus had a high ability to synthesize riboflavin-α-glucoside. Moreover, it was pointed out that a partially purified enzyme preparation of maltose α-1,4→1,6 transglucosidase prepared from shaking culture filtrate of A. awamori by the method of Okazaki had both riboflavin-α-glucoside-forming and -decomposing activities.
