  We discuss non-Gaussianity and baryonic isocurvature fluctuations in the
curvaton scenario, assuming that the baryon asymmetry of the universe
originates only from the decay products of the inflaton. When large
non-Gaussianity is realized in such a scenario, non-vanishing baryonic
isocurvature fluctuations can also be generated unless the baryogenesis occurs
after the decay of the curvaton. We calculate the non-linearity parameter f_NL
and the baryonic isocurvature fluctuations, taking account of the primordial
fluctuations of both the inflaton and the curvaton. We show that, although
current constraints on isocurvature fluctuations are severe, the non-linearity
parameter can be large as f_NL \sim O(10-100) without conflicting with the
constraints.
