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Bioconversion of D-psicose to D-tagatose and D-talitol by Mucoraceae fungi
Kazutoshi Yoshihara1, Yoshihiro Shinohara, Takahiro Hirotsu
1National Institute of Advanced Industrial Science and Technology, Shikoku Center, 2217-14 Hayashi-cho, Takamatsu, Kagawa 761-0395, Japan. kazu-yoshihara@aist.go.jp
Abstract:
Rhizopus oryzae MYA-2483, which cannot utilize D-psicose as a sole source of carbon, converted D-psicose to two other compounds. These compounds were identified by NMR and IR as D-tagatose and D-talitol. In this study, we describe for the first time the bioconversion of D-psicose to D-tagatose. Various strains of Mucoraceae fungi, to which R. oryzae MYA-2483 belongs, exhibited conversion activity similar to that of R. oryzae MYA-2483. There is the possibility that a considerable number of fungi belonging to Mucoraceae possess such D-psicose conversion activity.
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