  Central bialgebras in a braided category $\C$ are algebras in the center of
the category of coalgebras in $\C$. On these bialgebras another product can be
defined, which plays the role of the opposite product. Hence, coquasitriangular
structures on central bialgebras can be defined. We prove some properties of
the antipode on coquasitriangular central Hopf algebras and give a
characterization of central bialgebras.
