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We study bottom flavor abundance in the early Universe near to a temperature$T_\mathrm{H}\simeq150\,\mathrm{MeV}$, the condition for hadronization ofdeconfined quark-gluon plasma (QGP). We show bottom flavor abundancenonequilibrium lasting microseconds. In our study we use that in both QGP, andthe hadronic gas phase (HG) $b$ and $\bar b$ quarks near $T_\mathrm{H}$ arebound in B-mesons and antimesons subject to $CP$ violating weak decays. Acoincident non-equilibrium abundance of bottom flavor can lead to mattergenesis at required strength: a) The specific thermal yield per entropy is$n_b^{th}/\sigma=10^{-10}\sim10^{-13}$. b) Considering time scales, millions ofcycles of B-meson decays, and $b\bar b$-pair recreation processes occur.

Possibility of bottom-catalyzed matter genesis near to primordial QGP hadronization