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We found general solutions of matter stress-energy (non-)conservation inscalar-tensor FLRW-type cosmological models by extending the logotropicformalism to the case of non-minimal coupling between the scalar field and newdark fluid candidates. The energy conditions expressed by the generatingfunction are introduced. Next, we investigate the possibility of separatingbaryonic from dark matter and explain their ratio as a chameleon effect in thepresence of non-minimal coupling. To answer the question affirmatively weanalyze simple extensions of the $\Lambda$-CDM model by adding a non-minimallycoupled scalar field in the Einstein frame. Two scenarios involving either ascalaron (quintessence) or a phantom (ghost) are numerically solved andcompared. As a result, it is shown that in both cases LCDM model can bereproduced with a high accuracy in the region covered by observations. Asexpected, in the case of the phantom (ghost) field the Big-Bang scenario isreplaced by the (matter) Bounce.

Is it possible to separate baryonic from dark matter within the $\Lambda$-CDM formalism?