Effect of a rare sugar, D-psicose on growth of an oligotrophic bacterium V-16
1995
Sato, M. (Kagawa Univ., Miki (Japan). Faculty of Agriculture) | Ishii, M. | Kimura, Y. | Izumori, K.
An oligotrophic bacterium, V-16, which was a gram positive rod, grew twice well by supplement with a rare keto-hexose, D-psicose, as well as L-tagatose and D-sorbose in 100-fold diluted nutrient broth as a basal medium. The organism utilized about 44% of the supplemented D-psicose for growth carbon source in the diluted basal medium. But the growth of V-16 was remarkably inhibited by the supplement of D-psicose in higher concentrations of basal media during early cultivation term. After the about 10 days cultivation the growth recovered from the inhibition by D-psicose. The organism is not useful for bacterial source for D-psicose metabolic enzymes, because it is difficult to obtain abundantly cells capable of inducing these enzymes with as small amount of D-psicose as possible
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