Evolution of the dust enrichment during the collapse. Logarithm of the normalized dust ratio at the maximum gas density, depending on the size of the grains (individual panels) and the initial turbulent Mach (green for ℳ_i = 0, blue for ℳ_i = 0.5, red for ℳ_i = 1). Diamonds on the dotted line indicate the interpolated value to get the dust enrichment within the first hydrostatic core (Table 1).