  We study one-point statistics of spiral turbulent pulsations on the
background of three-dimensional large-scale vortex in a rotating fluid.
Assuming that the helical flow is created by a statistically axially symmetric
random force with broken mirror symmetry, we analytically calculate
velocity-vorticity mean including its magnitude and the anisotropy. For
electrically conducting liquid, we examine the $\alpha$-effect in the system.
The found elements of $\alpha$-matrix strongly depend on relation between
Rossby $\mathrm{Ro}$ and magnetic Prandtl $\mathrm{Pr}_{\mathrm{m}}$ numbers in
considered region $\mathrm{Ro}\lesssim 1$, $\mathrm{Pr}_{\mathrm{m}} \lesssim
1$. We establish criterion for the numbers when the $\alpha$-effect leads to
instability of large-scale magnetic field
